SlideShare ist ein Scribd-Unternehmen logo
1 von 7
Downloaden Sie, um offline zu lesen
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko




Maintaining Your
Roof
By Ben Gromicko
Roofs play a key role in protecting building occupants and interiors from outside
weather conditions, primarily moisture. The roof, insulation and ventilation must all work
together to keep the building free of moisture. Roofs also provide
protection from the sun. In fact, if designed correctly, roof
overhangs can protect the building's exterior walls from moisture
and sun. The concerns regarding moisture, standing water,
durability and appearance are different, reflected in the choices of
roofing materials.

Maintaining Your Roof

Homeowner maintenance includes cleaning the leaves and debris from the roof’s
valleys and gutters. Debris in the valleys can cause water to wick under the shingles
and cause damage to the interior of the roof. Clogged rain gutters can cause water to
flow back under the shingles on the eaves and cause damage, regardless of the roofing
material. including composition shingle, wood shake, tile or metal. The best way to
preserve your roof is to stay off it. Also, seasonal changes in the weather are usually the
most destructive forces.

A leaky roof can damage ceilings, walls and furnishings. To protect buildings and their
contents from water damage, roofers repair and install roofs made of tar or asphalt and
gravel; rubber or thermoplastic; metal; or shingles made of asphalt, slate, fiberglass,
wood, tile, or other material. Roofers also may waterproof foundation walls and floors.

There are two types of roofs: flat and pitched (sloped). Most commercial, industrial and
apartment buildings have flat or slightly sloping roofs. Most houses have pitched roofs.
Some roofers work on both types; others specialize. Most flat roofs are covered with
several layers of materials. Roofers first put a layer of insulation on the roof deck. Over
the insulation, they then spread a coat of molten bitumen, a tar-like substance. Next,
they install partially overlapping layers of roofing felt, a fabric saturated in bitumen, over
the surface. Roofers use a mop to spread hot bitumen over the surface and under the
next layer. This seals the seams and makes the surface watertight. Roofers repeat

                                          Page 1 of 7
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko


these steps to build up the desired number of layers, called plies. The top layer either is
glazed to make a smooth finish or has gravel embedded in the hot bitumen to create a
rough surface. An increasing number of flat roofs are covered with a single-ply
membrane of waterproof rubber or thermoplastic compounds. Roofers roll these sheets
over the roof’s insulation and seal the seams. Adhesive mechanical fasteners, or stone
ballast hold the sheets in place. The building must be of sufficient strength to hold the
ballast.

Most residential roofs are covered with shingles. To apply shingles, roofers first lay, cut,
and tack 3-foot strips of roofing felt lengthwise over the entire roof. Then, starting from
the bottom edge, they staple or nail overlapping rows of shingles to the roof. Workers
measure and cut the felt and shingles to fit intersecting roof surfaces and to fit around
vent pipes and chimneys. Wherever two roof surfaces intersect, or where shingles
reach a vent pipe or chimney, roofers cement or nail flashing strips of metal or shingle
over the joints to make them watertight. Finally, roofers cover exposed nailheads with
roofing cement or caulking to prevent water leakage. Roofers who use tile, metal
shingles or shakes follow a similar process. Some roofers also water-proof and damp-
proof masonry and concrete walls and floors. To prepare surfaces for waterproofing,
they hammer and chisel away rough spots, or remove them with a rubbing brick, before
applying a coat of liquid waterproofing compound. They also may paint or spray
surfaces with a waterproofing material, or attach a waterproofing membrane to surfaces.
When damp-proofing, they usually spray a bitumen-based coating on interior or exterior
surfaces.

A number of roofing materials are available...

Asphalt

Asphalt is the most commonly used roofing material. Asphalt products include shingles,
roll-roofing, built-up roofing, and modified bitumen membranes. Asphalt shingles are
typically the most common and economical choice for residential roofing. They come in
a variety of colors, shapes and textures. There are four different types: strip, laminated,
interlocking, and large individual shingles. Laminated shingles consist of more than one
layer of tabs to provide extra thickness. Interlocking shingles are used to provide greater
wind resistance. And large individual shingles generally come in rectangular and
hexagonal shapes. Roll-roofing products are generally used in residential applications,
mostly for underlayments and flashings. They come in four different types of material:
smooth-surfaced, saturated felt, specialty-eaves flashings, and mineral-surfaced. Only
mineral-surfaced is used alone as a primary roof covering for small buildings, such as
sheds. Smooth-surfaced products are used primarily as flashing to seal the roof at
intersections and protrusions, and for providing extra deck protection at the roof's eaves
and valleys. Saturated felt is used as an underlayment between the roof deck and the
roofing material. Specialty-eaves flashings are typically used in climates where ice
dams and water backups are common. Built-up roofing (or BUR) is the most popular

                                         Page 2 of 7
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko


choice of roofing used on commercial, industrial and institutional buildings. BUR is used
on flat and low-sloped roofs and consists of multiple layers of bitumen and ply sheets.
Components of a BUR system include the roof deck, a vapor retarder, insulation,
membrane, and surfacing material. A modified bitumen-membrane assembly consists of
continuous plies of saturated felts, coated felts, fabrics or mats between which alternate
layers of bitumen are applied, either surfaced or unsurfaced. Factory surfacing, if
applied, includes mineral granules, slag, aluminum or copper. The bitumen determines
the membrane's physical characteristics and provides primary waterproofing protection,
while the reinforcement adds strength, puncture-resistance and overall system integrity.

Metal

Most metal roofing products consist of steel or aluminum, although some consist of
copper and other metals. Steel is invariably galvanized by the application of a zinc or a
zinc-aluminum coating, which greatly reduces the rate of corrosion. Metal roofing is
available as traditional seam and batten, tiles, shingles and shakes. Products also come
in a variety of styles and colors. Metal roofs with solid sheathing control noise from rain,
hail and bad weather just as well as any other roofing material. Metal roofing can also
help eliminate ice damming at the eaves. And in wildfire-prone areas, metal roofing
helps protect buildings from fire, should burning embers land on the roof. Metal roofing
costs more than asphalt, but it typically lasts two to three times longer than asphalt and
wood shingles.

Wood

Wood shakes offer a natural look with a lot of character. Because of variations in color,
width, thickness, and cut of the wood, no two shake roofs will ever look the same. Wood
offers some energy benefits, too. It helps to insulate the attic, and it allows the house to
breathe, circulating air through the small openings under the felt rows on which wooden
shingles are laid. A wood shake roof, however, demands proper maintenance and
repair, or it will not last as long as other products. Mold, rot and insects can become a
problem. The life-cycle cost of a shake roof may be high, and old shakes can't be
recycled. Most wood shakes are unrated by fire safety codes. Many use wipe or spray-
on fire retardants, which offer less protection and are only effective for a few years.
Some pressure-treated shakes are impregnated with fire retardant and meet national
fire safety standards. Installing wood shakes is more complicated than roofing with
composite shingles, and the quality of the finished roof depends on the experience of
the contractor, as well as the caliber of the shakes used. The best shakes come from
the heartwood of large, old cedar trees, which are difficult to find. Some contractors
maintain that shakes made from the outer wood of smaller cedars, the usual source
today, are less uniform, more subject to twisting and warping, and don't last as long.

Concrete and Tile


                                         Page 3 of 7
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko


Concrete tiles are made of extruded concrete that is colored. Traditional roofing tiles are
made from clay. Concrete and clay tile roofing systems are durable, aesthetically
appealing, and low in maintenance. They also provide energy savings and are
environmentally friendly. Although material and installation costs are higher for concrete
and clay tile roofs, when evaluated on a price-versus-performance basis, they may out-
perform other roofing materials. Tile adorns the roofs of many historic buildings, as well
as modern structures. In fact, because of its extreme durability, longevity and safety,
roof tile is the most prevalent roofing material in the world. Tested over centuries, roof
tile can successfully withstand the most extreme weather conditions including hail, high
wind, earthquakes, scorching heat, and harsh freeze-thaw cycles. Concrete and clay
roof tiles also have unconditional Class A fire ratings, which means that, when installed
according to building code, roof tile is non-combustible and maintains that quality
throughout its lifetime. In recent years, manufacturers have developed new water-
shedding techniques and, for high-wind situations, new adhesives and mechanical
fasteners. Because the ultimate longevity of a tile roof also depends on the quality of the
sub-roof, roof tile manufacturers are also working to improve flashings and other
aspects of the underlayment system. Under normal circumstances, properly installed tile
roofs are virtually maintenance-free. Unlike other roofing materials, roof tiles actually
become stronger over time. Because of roof tile's superior quality and minimal
maintenance requirements, most roof tile manufacturers offer warranties that range
from 50 years to the lifetime of the structure.

Concrete and clay tile roofing systems are also energy-efficient, helping to maintain
livable interior temperatures (in both cold and warm climates) at a lower cost than other
roofing systems. Because of the thermal capacity of roof tiles and the ventilated air
space that their placement on the roof surface creates, a tile roof can lower air-
conditioning costs in hotter climates, and produce more constant temperatures in colder
regions, which reduces potential ice accumulation. Tile roofing systems are made from
naturally occurring materials and can be easily recycled into new tiles or other useful
products. They are produced without the use of chemical preservatives, and do not
deplete limited natural resources.

Single-Ply

Single-ply membranes are flexible sheets of compounded synthetic materials that are
manufactured in a factory. There are three types of membranes: thermosets,
thermoplastics, and modified bitumens. These materials provide strength, flexibility, and
long-lasting durability. The advantages of pre-fabricated sheets are the consistency of
the product quality, the versatility in their attachment methods, and, therefore, their
broader applicability. They are inherently flexible, used in a variety of attachment
systems, and compounded for long-lasting durability and watertight integrity for years of
roof life. Thermoset membranes are compounded from rubber polymers. The most
commonly used polymer is EPDM (often referred to as "rubber roofing"). Thermoset
membranes make successful roofing materials because they can withstand the

                                        Page 4 of 7
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko


potentially damaging effects of sunlight and most common chemicals generally found on
roofs. The easiest way to identify a thermoset membrane is by its seams, which require
the use of adhesive, either liquid or tape, to form a watertight seal at the overlaps.
Thermoplastic membranes are based on plastic polymers. The most common
thermoplastic is PVC (polyvinyl chloride) which has been made flexible through the
inclusion of certain ingredients called plasticizers. Thermoplastic membranes are
identified by seams that are formed using either heat or chemical welding. These seams
are as strong or stronger than the membrane itself. Most thermoplastic membranes are
manufactured to include a reinforcement layer, usually polyester or fiberglass, which
provides increased strength and dimensional stability. Modified bitumen membranes are
hybrids that incorporate the high-tech formulation and pre-fabrication advantages of
single-ply with some of the traditional installation techniques used in built-up roofing.
These materials are factory-fabricated layers of asphalt, "modified" using a rubber or
plastic ingredient for increased flexibility, and combined with reinforcement for added
strength and stability. There are two primary modifiers used today: APP (atactic
polypropylene) and SBS (styrene butadiene styrene). The type of modifier used may
determine the method of sheet installation. Some are mopped down using hot asphalt,
and some use torches to melt the asphalt so that it flows onto the substrate. The seams
are sealed by the same technique.

Are You at Risk?

If you aren't sure whether your house is at risk from natural disasters, check with your
local fire marshal, building official, city engineer, or planning and zoning administrator.
They can tell you whether you are in a hazard area. Also, they usually can tell you how
to protect yourself and your house and property from damage. It is never a bad idea to
ask an InterNACHI inspector whether your roof is in need of repair during your next
scheduled inspection. Protection can involve a variety of changes to your house and
property which that can vary in complexity and cost. You may be able to make some
types of changes yourself. But complicated or large-scale changes and those that affect
the structure of your house or its electrical wiring and plumbing should be carried out
only by a professional contractor licensed to work in your state, county or city. One
example is fire protection, accomplished by
replacing flammable roofing materials with fire-
resistant materials. This is something that most
homeowners would probably hire a contractor to
do.

Replacing Your Roof

The age of your roof is usually the major factor in
determining when to replace it. Most roofs last
many years, if properly installed, and often can be
repaired rather than replaced. An isolated leak

                                        Page 5 of 7
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko


usually can be repaired. The average life expectancy of a typical residential roof is 15 to
20 years. Water damage to a home’s interior or overhangs is commonly caused by
leaks from a single weathered portion of the roof, poorly installed flashing, or from
around chimneys and skylights. These problems do not necessarily mean you need a
new roof.

Fire-Resistant Materials

Some roofing materials, including asphalt shingles, and especially wood shakes, are
less resistant to fire than others. When wildfires and brush fires spread to houses, it is
often because burning branches, leaves, and other debris buoyed by the heated air and
carried by the wind fall onto roofs. If the roof of your house is covered with wood or
asphalt shingles, you should consider replacing them with fire-resistant materials. You
can replace your existing roofing materials with slate, terra cotta or other types of tile, or
standing-seam metal roofing. Replacing roofing materials is difficult and dangerous
work. Unless you are skilled in roofing and have all the necessary tools and equipment,
you will probably want to hire a roofing contractor to do the work. Also, a roofing
contractor can advise you on the relative advantages and disadvantages of various fire-
resistant roofing materials.

Hiring a Licensed Contractor

One of the best ways to select a roofing contractor is to ask friends and relatives for
recommendations. You may also contact a professional roofers association for referrals.
Professional associations have stringent guidelines for their members to follow. The
roofers association in your area will provide you with a list of available contractors.
Follow these guidlines when selecting a contractor:
    • get three references and review their past
       work;
    • get at least three bids;
    • get a written contract, and don’t sign anything
       until you completely understand the terms;
    • pay 10% down or $1,000 whichever is less;
    • don’t let payments get ahead of the work;
    • don’t pay cash;
    • don’t make final payment until you’re satisfied
       with the job; and
    • don’t rush into repairs or be pressured into
       making an immediate decision.
You’ve Chosen the Contractor... What About the
Contract?

Make sure everything is in writing. The contract is one of the best ways to prevent
problems before you begin. The contract protects you and the contractor by including

                                          Page 6 of 7
Maintaining Your Roof
By Ben Gromicko
http://www.bengromicko.com
Copyright © 2010 Ben Gromicko


everything you have both agreed upon. Get all promises in writing and spell out exactly
what the contractor will and will not do.

...and Permits?

Your contract should call for all work to be performed in accordance with all applicable
building codes. The building codes set minimum safety standards for construction.
Generally, a building permit is required whenever structural work is involved. The
contractor should obtain all necessary building permits. If this is not specified in the
contract, you may be held legally responsible for failure to obtain the required permits.
The building department will inspect your roof when the project has reached a certain
stage, and again when the roof is completed.

...and Insurance?

Make sure the contractor carries workers' compensation insurance and general liability
insurance in case of accidents on the job. Ask to have copies of these policies for your
job file. You should protect yourself from mechanics’ liens against your home in the
event the contractor does not pay subcontractors or material suppliers. You may be
able to protect yourself by having a "release of lien" clause in your contract. A release of
lien clause requires the contractor, subcontractors and suppliers to furnish a "certificate
of waiver of lien." If you are financing your project, the bank or lending institution may
require that the contractor, subcontractors and suppliers verify that they have been paid
before releasing funds for subsequent phases of the project.


Keep these points in mind if you plan to have your existing roofing materials
replaced:
   • Tile, metal, and slate are more expensive roofing materials, but if you need to
      replace your roofing anyway, it may be worthwhile to pay a little more for the
      added protection these materials provide.
   • Slate and tile can be much heavier than asphalt shingles or wood shingles. If you
      are considering switching to one of these heavier coverings, your roofing
      contractor should determine whether the framing of your roof is strong enough to
      support them.
   • If you live in an area where snow loads are a problem, consider switching to a
      modern standing-seam metal roof, which will usually shed snow efficiently.




                                         Page 7 of 7

Weitere ähnliche Inhalte

Kürzlich hochgeladen

Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876
Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876
Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876dlhescort
 
Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...
Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...
Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...Anamikakaur10
 
Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...
Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...
Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...lizamodels9
 
Dr. Admir Softic_ presentation_Green Club_ENG.pdf
Dr. Admir Softic_ presentation_Green Club_ENG.pdfDr. Admir Softic_ presentation_Green Club_ENG.pdf
Dr. Admir Softic_ presentation_Green Club_ENG.pdfAdmir Softic
 
Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...
Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...
Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...amitlee9823
 
Business Model Canvas (BMC)- A new venture concept
Business Model Canvas (BMC)-  A new venture conceptBusiness Model Canvas (BMC)-  A new venture concept
Business Model Canvas (BMC)- A new venture conceptP&CO
 
Eluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort Service
Eluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort ServiceEluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort Service
Eluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort ServiceDamini Dixit
 
Marel Q1 2024 Investor Presentation from May 8, 2024
Marel Q1 2024 Investor Presentation from May 8, 2024Marel Q1 2024 Investor Presentation from May 8, 2024
Marel Q1 2024 Investor Presentation from May 8, 2024Marel
 
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai KuwaitThe Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwaitdaisycvs
 
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesMysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesDipal Arora
 
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 MonthsSEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 MonthsIndeedSEO
 
Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000
Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000
Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000dlhescort
 
Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...
Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...
Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...lizamodels9
 
Falcon Invoice Discounting: Empowering Your Business Growth
Falcon Invoice Discounting: Empowering Your Business GrowthFalcon Invoice Discounting: Empowering Your Business Growth
Falcon Invoice Discounting: Empowering Your Business GrowthFalcon investment
 
Value Proposition canvas- Customer needs and pains
Value Proposition canvas- Customer needs and painsValue Proposition canvas- Customer needs and pains
Value Proposition canvas- Customer needs and painsP&CO
 
FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756
FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756
FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756dollysharma2066
 
Phases of Negotiation .pptx
 Phases of Negotiation .pptx Phases of Negotiation .pptx
Phases of Negotiation .pptxnandhinijagan9867
 
Call Girls In Noida 959961⊹3876 Independent Escort Service Noida
Call Girls In Noida 959961⊹3876 Independent Escort Service NoidaCall Girls In Noida 959961⊹3876 Independent Escort Service Noida
Call Girls In Noida 959961⊹3876 Independent Escort Service Noidadlhescort
 
It will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayIt will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayNZSG
 

Kürzlich hochgeladen (20)

Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876
Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876
Cheap Rate Call Girls In Noida Sector 62 Metro 959961乂3876
 
Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...
Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...
Call Now ☎️🔝 9332606886🔝 Call Girls ❤ Service In Bhilwara Female Escorts Serv...
 
Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...
Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...
Call Girls From Pari Chowk Greater Noida ❤️8448577510 ⊹Best Escorts Service I...
 
Dr. Admir Softic_ presentation_Green Club_ENG.pdf
Dr. Admir Softic_ presentation_Green Club_ENG.pdfDr. Admir Softic_ presentation_Green Club_ENG.pdf
Dr. Admir Softic_ presentation_Green Club_ENG.pdf
 
Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...
Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...
Call Girls Jp Nagar Just Call 👗 7737669865 👗 Top Class Call Girl Service Bang...
 
Business Model Canvas (BMC)- A new venture concept
Business Model Canvas (BMC)-  A new venture conceptBusiness Model Canvas (BMC)-  A new venture concept
Business Model Canvas (BMC)- A new venture concept
 
(Anamika) VIP Call Girls Napur Call Now 8617697112 Napur Escorts 24x7
(Anamika) VIP Call Girls Napur Call Now 8617697112 Napur Escorts 24x7(Anamika) VIP Call Girls Napur Call Now 8617697112 Napur Escorts 24x7
(Anamika) VIP Call Girls Napur Call Now 8617697112 Napur Escorts 24x7
 
Eluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort Service
Eluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort ServiceEluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort Service
Eluru Call Girls Service ☎ ️93326-06886 ❤️‍🔥 Enjoy 24/7 Escort Service
 
Marel Q1 2024 Investor Presentation from May 8, 2024
Marel Q1 2024 Investor Presentation from May 8, 2024Marel Q1 2024 Investor Presentation from May 8, 2024
Marel Q1 2024 Investor Presentation from May 8, 2024
 
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai KuwaitThe Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
 
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesMysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
 
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 MonthsSEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
 
Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000
Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000
Call Girls In Majnu Ka Tilla 959961~3876 Shot 2000 Night 8000
 
Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...
Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...
Russian Call Girls In Rajiv Chowk Gurgaon ❤️8448577510 ⊹Best Escorts Service ...
 
Falcon Invoice Discounting: Empowering Your Business Growth
Falcon Invoice Discounting: Empowering Your Business GrowthFalcon Invoice Discounting: Empowering Your Business Growth
Falcon Invoice Discounting: Empowering Your Business Growth
 
Value Proposition canvas- Customer needs and pains
Value Proposition canvas- Customer needs and painsValue Proposition canvas- Customer needs and pains
Value Proposition canvas- Customer needs and pains
 
FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756
FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756
FULL ENJOY Call Girls In Majnu Ka Tilla, Delhi Contact Us 8377877756
 
Phases of Negotiation .pptx
 Phases of Negotiation .pptx Phases of Negotiation .pptx
Phases of Negotiation .pptx
 
Call Girls In Noida 959961⊹3876 Independent Escort Service Noida
Call Girls In Noida 959961⊹3876 Independent Escort Service NoidaCall Girls In Noida 959961⊹3876 Independent Escort Service Noida
Call Girls In Noida 959961⊹3876 Independent Escort Service Noida
 
It will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayIt will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 May
 

Empfohlen

PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
 
Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)contently
 
How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024Albert Qian
 
Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsSocial Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsKurio // The Social Media Age(ncy)
 
Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
 
5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summarySpeakerHub
 
ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
 
Getting into the tech field. what next
Getting into the tech field. what next Getting into the tech field. what next
Getting into the tech field. what next Tessa Mero
 
Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentGoogle's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
 
Time Management & Productivity - Best Practices
Time Management & Productivity -  Best PracticesTime Management & Productivity -  Best Practices
Time Management & Productivity - Best PracticesVit Horky
 
The six step guide to practical project management
The six step guide to practical project managementThe six step guide to practical project management
The six step guide to practical project managementMindGenius
 
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...RachelPearson36
 
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
 
12 Ways to Increase Your Influence at Work
12 Ways to Increase Your Influence at Work12 Ways to Increase Your Influence at Work
12 Ways to Increase Your Influence at WorkGetSmarter
 
Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...
Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...
Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...DevGAMM Conference
 

Empfohlen (20)

Skeleton Culture Code
Skeleton Culture CodeSkeleton Culture Code
Skeleton Culture Code
 
PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024
 
Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)
 
How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024
 
Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsSocial Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie Insights
 
Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024
 
5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary
 
ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd
 
Getting into the tech field. what next
Getting into the tech field. what next Getting into the tech field. what next
Getting into the tech field. what next
 
Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentGoogle's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search Intent
 
How to have difficult conversations
How to have difficult conversations How to have difficult conversations
How to have difficult conversations
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data Science
 
Time Management & Productivity - Best Practices
Time Management & Productivity -  Best PracticesTime Management & Productivity -  Best Practices
Time Management & Productivity - Best Practices
 
The six step guide to practical project management
The six step guide to practical project managementThe six step guide to practical project management
The six step guide to practical project management
 
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
 
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
 
12 Ways to Increase Your Influence at Work
12 Ways to Increase Your Influence at Work12 Ways to Increase Your Influence at Work
12 Ways to Increase Your Influence at Work
 
ChatGPT webinar slides
ChatGPT webinar slidesChatGPT webinar slides
ChatGPT webinar slides
 
More than Just Lines on a Map: Best Practices for U.S Bike Routes
More than Just Lines on a Map: Best Practices for U.S Bike RoutesMore than Just Lines on a Map: Best Practices for U.S Bike Routes
More than Just Lines on a Map: Best Practices for U.S Bike Routes
 
Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...
Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...
Ride the Storm: Navigating Through Unstable Periods / Katerina Rudko (Belka G...
 

Virginia Beach Home Inspector: Roof Maintenance

  • 1. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko Maintaining Your Roof By Ben Gromicko Roofs play a key role in protecting building occupants and interiors from outside weather conditions, primarily moisture. The roof, insulation and ventilation must all work together to keep the building free of moisture. Roofs also provide protection from the sun. In fact, if designed correctly, roof overhangs can protect the building's exterior walls from moisture and sun. The concerns regarding moisture, standing water, durability and appearance are different, reflected in the choices of roofing materials. Maintaining Your Roof Homeowner maintenance includes cleaning the leaves and debris from the roof’s valleys and gutters. Debris in the valleys can cause water to wick under the shingles and cause damage to the interior of the roof. Clogged rain gutters can cause water to flow back under the shingles on the eaves and cause damage, regardless of the roofing material. including composition shingle, wood shake, tile or metal. The best way to preserve your roof is to stay off it. Also, seasonal changes in the weather are usually the most destructive forces. A leaky roof can damage ceilings, walls and furnishings. To protect buildings and their contents from water damage, roofers repair and install roofs made of tar or asphalt and gravel; rubber or thermoplastic; metal; or shingles made of asphalt, slate, fiberglass, wood, tile, or other material. Roofers also may waterproof foundation walls and floors. There are two types of roofs: flat and pitched (sloped). Most commercial, industrial and apartment buildings have flat or slightly sloping roofs. Most houses have pitched roofs. Some roofers work on both types; others specialize. Most flat roofs are covered with several layers of materials. Roofers first put a layer of insulation on the roof deck. Over the insulation, they then spread a coat of molten bitumen, a tar-like substance. Next, they install partially overlapping layers of roofing felt, a fabric saturated in bitumen, over the surface. Roofers use a mop to spread hot bitumen over the surface and under the next layer. This seals the seams and makes the surface watertight. Roofers repeat Page 1 of 7
  • 2. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko these steps to build up the desired number of layers, called plies. The top layer either is glazed to make a smooth finish or has gravel embedded in the hot bitumen to create a rough surface. An increasing number of flat roofs are covered with a single-ply membrane of waterproof rubber or thermoplastic compounds. Roofers roll these sheets over the roof’s insulation and seal the seams. Adhesive mechanical fasteners, or stone ballast hold the sheets in place. The building must be of sufficient strength to hold the ballast. Most residential roofs are covered with shingles. To apply shingles, roofers first lay, cut, and tack 3-foot strips of roofing felt lengthwise over the entire roof. Then, starting from the bottom edge, they staple or nail overlapping rows of shingles to the roof. Workers measure and cut the felt and shingles to fit intersecting roof surfaces and to fit around vent pipes and chimneys. Wherever two roof surfaces intersect, or where shingles reach a vent pipe or chimney, roofers cement or nail flashing strips of metal or shingle over the joints to make them watertight. Finally, roofers cover exposed nailheads with roofing cement or caulking to prevent water leakage. Roofers who use tile, metal shingles or shakes follow a similar process. Some roofers also water-proof and damp- proof masonry and concrete walls and floors. To prepare surfaces for waterproofing, they hammer and chisel away rough spots, or remove them with a rubbing brick, before applying a coat of liquid waterproofing compound. They also may paint or spray surfaces with a waterproofing material, or attach a waterproofing membrane to surfaces. When damp-proofing, they usually spray a bitumen-based coating on interior or exterior surfaces. A number of roofing materials are available... Asphalt Asphalt is the most commonly used roofing material. Asphalt products include shingles, roll-roofing, built-up roofing, and modified bitumen membranes. Asphalt shingles are typically the most common and economical choice for residential roofing. They come in a variety of colors, shapes and textures. There are four different types: strip, laminated, interlocking, and large individual shingles. Laminated shingles consist of more than one layer of tabs to provide extra thickness. Interlocking shingles are used to provide greater wind resistance. And large individual shingles generally come in rectangular and hexagonal shapes. Roll-roofing products are generally used in residential applications, mostly for underlayments and flashings. They come in four different types of material: smooth-surfaced, saturated felt, specialty-eaves flashings, and mineral-surfaced. Only mineral-surfaced is used alone as a primary roof covering for small buildings, such as sheds. Smooth-surfaced products are used primarily as flashing to seal the roof at intersections and protrusions, and for providing extra deck protection at the roof's eaves and valleys. Saturated felt is used as an underlayment between the roof deck and the roofing material. Specialty-eaves flashings are typically used in climates where ice dams and water backups are common. Built-up roofing (or BUR) is the most popular Page 2 of 7
  • 3. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko choice of roofing used on commercial, industrial and institutional buildings. BUR is used on flat and low-sloped roofs and consists of multiple layers of bitumen and ply sheets. Components of a BUR system include the roof deck, a vapor retarder, insulation, membrane, and surfacing material. A modified bitumen-membrane assembly consists of continuous plies of saturated felts, coated felts, fabrics or mats between which alternate layers of bitumen are applied, either surfaced or unsurfaced. Factory surfacing, if applied, includes mineral granules, slag, aluminum or copper. The bitumen determines the membrane's physical characteristics and provides primary waterproofing protection, while the reinforcement adds strength, puncture-resistance and overall system integrity. Metal Most metal roofing products consist of steel or aluminum, although some consist of copper and other metals. Steel is invariably galvanized by the application of a zinc or a zinc-aluminum coating, which greatly reduces the rate of corrosion. Metal roofing is available as traditional seam and batten, tiles, shingles and shakes. Products also come in a variety of styles and colors. Metal roofs with solid sheathing control noise from rain, hail and bad weather just as well as any other roofing material. Metal roofing can also help eliminate ice damming at the eaves. And in wildfire-prone areas, metal roofing helps protect buildings from fire, should burning embers land on the roof. Metal roofing costs more than asphalt, but it typically lasts two to three times longer than asphalt and wood shingles. Wood Wood shakes offer a natural look with a lot of character. Because of variations in color, width, thickness, and cut of the wood, no two shake roofs will ever look the same. Wood offers some energy benefits, too. It helps to insulate the attic, and it allows the house to breathe, circulating air through the small openings under the felt rows on which wooden shingles are laid. A wood shake roof, however, demands proper maintenance and repair, or it will not last as long as other products. Mold, rot and insects can become a problem. The life-cycle cost of a shake roof may be high, and old shakes can't be recycled. Most wood shakes are unrated by fire safety codes. Many use wipe or spray- on fire retardants, which offer less protection and are only effective for a few years. Some pressure-treated shakes are impregnated with fire retardant and meet national fire safety standards. Installing wood shakes is more complicated than roofing with composite shingles, and the quality of the finished roof depends on the experience of the contractor, as well as the caliber of the shakes used. The best shakes come from the heartwood of large, old cedar trees, which are difficult to find. Some contractors maintain that shakes made from the outer wood of smaller cedars, the usual source today, are less uniform, more subject to twisting and warping, and don't last as long. Concrete and Tile Page 3 of 7
  • 4. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko Concrete tiles are made of extruded concrete that is colored. Traditional roofing tiles are made from clay. Concrete and clay tile roofing systems are durable, aesthetically appealing, and low in maintenance. They also provide energy savings and are environmentally friendly. Although material and installation costs are higher for concrete and clay tile roofs, when evaluated on a price-versus-performance basis, they may out- perform other roofing materials. Tile adorns the roofs of many historic buildings, as well as modern structures. In fact, because of its extreme durability, longevity and safety, roof tile is the most prevalent roofing material in the world. Tested over centuries, roof tile can successfully withstand the most extreme weather conditions including hail, high wind, earthquakes, scorching heat, and harsh freeze-thaw cycles. Concrete and clay roof tiles also have unconditional Class A fire ratings, which means that, when installed according to building code, roof tile is non-combustible and maintains that quality throughout its lifetime. In recent years, manufacturers have developed new water- shedding techniques and, for high-wind situations, new adhesives and mechanical fasteners. Because the ultimate longevity of a tile roof also depends on the quality of the sub-roof, roof tile manufacturers are also working to improve flashings and other aspects of the underlayment system. Under normal circumstances, properly installed tile roofs are virtually maintenance-free. Unlike other roofing materials, roof tiles actually become stronger over time. Because of roof tile's superior quality and minimal maintenance requirements, most roof tile manufacturers offer warranties that range from 50 years to the lifetime of the structure. Concrete and clay tile roofing systems are also energy-efficient, helping to maintain livable interior temperatures (in both cold and warm climates) at a lower cost than other roofing systems. Because of the thermal capacity of roof tiles and the ventilated air space that their placement on the roof surface creates, a tile roof can lower air- conditioning costs in hotter climates, and produce more constant temperatures in colder regions, which reduces potential ice accumulation. Tile roofing systems are made from naturally occurring materials and can be easily recycled into new tiles or other useful products. They are produced without the use of chemical preservatives, and do not deplete limited natural resources. Single-Ply Single-ply membranes are flexible sheets of compounded synthetic materials that are manufactured in a factory. There are three types of membranes: thermosets, thermoplastics, and modified bitumens. These materials provide strength, flexibility, and long-lasting durability. The advantages of pre-fabricated sheets are the consistency of the product quality, the versatility in their attachment methods, and, therefore, their broader applicability. They are inherently flexible, used in a variety of attachment systems, and compounded for long-lasting durability and watertight integrity for years of roof life. Thermoset membranes are compounded from rubber polymers. The most commonly used polymer is EPDM (often referred to as "rubber roofing"). Thermoset membranes make successful roofing materials because they can withstand the Page 4 of 7
  • 5. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko potentially damaging effects of sunlight and most common chemicals generally found on roofs. The easiest way to identify a thermoset membrane is by its seams, which require the use of adhesive, either liquid or tape, to form a watertight seal at the overlaps. Thermoplastic membranes are based on plastic polymers. The most common thermoplastic is PVC (polyvinyl chloride) which has been made flexible through the inclusion of certain ingredients called plasticizers. Thermoplastic membranes are identified by seams that are formed using either heat or chemical welding. These seams are as strong or stronger than the membrane itself. Most thermoplastic membranes are manufactured to include a reinforcement layer, usually polyester or fiberglass, which provides increased strength and dimensional stability. Modified bitumen membranes are hybrids that incorporate the high-tech formulation and pre-fabrication advantages of single-ply with some of the traditional installation techniques used in built-up roofing. These materials are factory-fabricated layers of asphalt, "modified" using a rubber or plastic ingredient for increased flexibility, and combined with reinforcement for added strength and stability. There are two primary modifiers used today: APP (atactic polypropylene) and SBS (styrene butadiene styrene). The type of modifier used may determine the method of sheet installation. Some are mopped down using hot asphalt, and some use torches to melt the asphalt so that it flows onto the substrate. The seams are sealed by the same technique. Are You at Risk? If you aren't sure whether your house is at risk from natural disasters, check with your local fire marshal, building official, city engineer, or planning and zoning administrator. They can tell you whether you are in a hazard area. Also, they usually can tell you how to protect yourself and your house and property from damage. It is never a bad idea to ask an InterNACHI inspector whether your roof is in need of repair during your next scheduled inspection. Protection can involve a variety of changes to your house and property which that can vary in complexity and cost. You may be able to make some types of changes yourself. But complicated or large-scale changes and those that affect the structure of your house or its electrical wiring and plumbing should be carried out only by a professional contractor licensed to work in your state, county or city. One example is fire protection, accomplished by replacing flammable roofing materials with fire- resistant materials. This is something that most homeowners would probably hire a contractor to do. Replacing Your Roof The age of your roof is usually the major factor in determining when to replace it. Most roofs last many years, if properly installed, and often can be repaired rather than replaced. An isolated leak Page 5 of 7
  • 6. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko usually can be repaired. The average life expectancy of a typical residential roof is 15 to 20 years. Water damage to a home’s interior or overhangs is commonly caused by leaks from a single weathered portion of the roof, poorly installed flashing, or from around chimneys and skylights. These problems do not necessarily mean you need a new roof. Fire-Resistant Materials Some roofing materials, including asphalt shingles, and especially wood shakes, are less resistant to fire than others. When wildfires and brush fires spread to houses, it is often because burning branches, leaves, and other debris buoyed by the heated air and carried by the wind fall onto roofs. If the roof of your house is covered with wood or asphalt shingles, you should consider replacing them with fire-resistant materials. You can replace your existing roofing materials with slate, terra cotta or other types of tile, or standing-seam metal roofing. Replacing roofing materials is difficult and dangerous work. Unless you are skilled in roofing and have all the necessary tools and equipment, you will probably want to hire a roofing contractor to do the work. Also, a roofing contractor can advise you on the relative advantages and disadvantages of various fire- resistant roofing materials. Hiring a Licensed Contractor One of the best ways to select a roofing contractor is to ask friends and relatives for recommendations. You may also contact a professional roofers association for referrals. Professional associations have stringent guidelines for their members to follow. The roofers association in your area will provide you with a list of available contractors. Follow these guidlines when selecting a contractor: • get three references and review their past work; • get at least three bids; • get a written contract, and don’t sign anything until you completely understand the terms; • pay 10% down or $1,000 whichever is less; • don’t let payments get ahead of the work; • don’t pay cash; • don’t make final payment until you’re satisfied with the job; and • don’t rush into repairs or be pressured into making an immediate decision. You’ve Chosen the Contractor... What About the Contract? Make sure everything is in writing. The contract is one of the best ways to prevent problems before you begin. The contract protects you and the contractor by including Page 6 of 7
  • 7. Maintaining Your Roof By Ben Gromicko http://www.bengromicko.com Copyright © 2010 Ben Gromicko everything you have both agreed upon. Get all promises in writing and spell out exactly what the contractor will and will not do. ...and Permits? Your contract should call for all work to be performed in accordance with all applicable building codes. The building codes set minimum safety standards for construction. Generally, a building permit is required whenever structural work is involved. The contractor should obtain all necessary building permits. If this is not specified in the contract, you may be held legally responsible for failure to obtain the required permits. The building department will inspect your roof when the project has reached a certain stage, and again when the roof is completed. ...and Insurance? Make sure the contractor carries workers' compensation insurance and general liability insurance in case of accidents on the job. Ask to have copies of these policies for your job file. You should protect yourself from mechanics’ liens against your home in the event the contractor does not pay subcontractors or material suppliers. You may be able to protect yourself by having a "release of lien" clause in your contract. A release of lien clause requires the contractor, subcontractors and suppliers to furnish a "certificate of waiver of lien." If you are financing your project, the bank or lending institution may require that the contractor, subcontractors and suppliers verify that they have been paid before releasing funds for subsequent phases of the project. Keep these points in mind if you plan to have your existing roofing materials replaced: • Tile, metal, and slate are more expensive roofing materials, but if you need to replace your roofing anyway, it may be worthwhile to pay a little more for the added protection these materials provide. • Slate and tile can be much heavier than asphalt shingles or wood shingles. If you are considering switching to one of these heavier coverings, your roofing contractor should determine whether the framing of your roof is strong enough to support them. • If you live in an area where snow loads are a problem, consider switching to a modern standing-seam metal roof, which will usually shed snow efficiently. Page 7 of 7