ACH 121 Lecture 11a (Thermal & Moisture Protection)

Thermal & Moisture Protection Why MOISTURE protection is needed? Types of Moisture Protection Why THERMAL protection is needed? Types of Thermal Protection

Moisture Protection What is condensation and why is it an issue in building construction? Types of Moisture Protection Vapor Barriers and Exterior Cladding Materials Roofing Ventilation and Materials Flashing & Gutters/Downspouts This Lecture:

Why does a building need to be water tight? ,[object Object],[object Object]

What happens to water vapor when temperature changes? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Water Vapor Properties water (liquid state) ice (solid state) vapor (gas state) freezing melting condensation evaporation sublimation

Water Vapor Properties ,[object Object],[object Object],[object Object],[object Object],[object Object]

Water Vapor Properties ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Water Vapor Properties ,[object Object],[object Object],CONDESATION

Why is Condensation such an issue? ,[object Object],[object Object],[object Object],Water is the DEATH of a building…… after fire, of course!!

Why is Condensation such an issue? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Surface Condensation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Surface Condensation ,[object Object],[object Object],[object Object],[object Object]

Concealed Condensation ,[object Object],[object Object],[object Object],[object Object]

General Purpose of Moisture Protection ,[object Object],[object Object]

Types of Moisture Protection Roof Ventilation Vapor Retarders & Barriers (building paper) Exterior Finishes & Cladding Roofing Materials Flashing Roof Drainage

Roof Ventilation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roof Ventilation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Eave Venting Ridge Vent Gable Vent

PVC (vinyl) Soffit - Perforated Typical Gable Vent

Roof Sheathing “held back” to allow the ridge to be vented

Vapor Retarders & Barriers ,[object Object],[object Object],[object Object]

Vapor Retarders & Barriers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Vapor Retarders & Barriers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],BITUMEN: Natural substances such as asphalt or maltha, which consist mainly of hydrocarbons. BITUMINOUS: Consisting of or resembling bitumen. Can be man made, such as those made from petroleum by-products.

Exterior Finishes and Cladding ,[object Object],[object Object]

Exterior Finishes and Cladding ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],www.certainteed.com

Vinyl Sliding Profiles double 4” clapboard double 4½” dutchlap double 5” dutchlap double 5” clapboard triple 3” clapboard

Exterior Finishes and Cladding ,[object Object],[object Object],[object Object],[object Object]

Brick masonry veneer with vinyl siding

Exterior Finishes and Cladding ,[object Object],[object Object],[object Object],[object Object],[object Object]

Exterior Finishes and Cladding ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exterior Finishes and Cladding ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exterior Insulation & Finish System (Photo - Insulation Board being attached to Gypsum Board Sheathing)

Exterior Insulation & Finish System (Photo – Reinforcing Mesh applied at openings)

Exterior Insulation & Finish System (Photo – Cementitious base coat being applied)

Exterior Insulation & Finish System (Photo – Reinforcing mesh visible in cementitious base coat)

NEXT CLASS Thermal and Moisture Protection Roofing Materials  Flashing  Gutters and Downspouts Read Chapter 7 and review class lecture notes

LAST CLASS Thermal and Moisture Protection Condensation  Vapor Retarders  Roof Ventilation  Cladding Students should have reviewed Chapter 7 and class lecture notes

Class Review What is condensation? Why is condensation bad for building assemblies?

Class Review What is used to prevent the passage of vapor into the construction assembly? Leading Manufacturer of vapor retarders?

THIS CLASS Thermal and Moisture Protection Roofing Materials  Flashing  Gutters and Downspouts

Roofing Materials ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roofing Materials-Shingles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Different Asphalt Shingle Profiles

Roofing Materials-Asphalt Shingles Professor Brandi R. Shepard© ACH 121-Materials and Methods 1

Professor Brandi R. Shepard© ACH 121-Materials and Methods 1

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Roofing Materials- Asphalt Shingles

Roofing Materials- Asphalt Shingles

Roofing Materials- Asphalt Shingles Professor Brandi R. Shepard© ACH 121-Materials and Methods 1

Roofing Felt Asphalt Shingles - Packaged Laid from the Eave up

Roofing Materials- Wood Shingles & Shakes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roofing Materials- Wood Shingles & Shakes ,[object Object],[object Object],[object Object],[object Object]

Roofing Materials-Tile ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roofing Materials-Tile ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roofing Materials-Tile ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Slate Roofing & Copper Flashing Slate Roof

Roofing Materials- Sheet Metal Roofing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roofing Materials- Sheet Metal Roofing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roofing Materials- Roll Roofing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Flashing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Flashing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

“ Hip Cap” (Shingles covering hip rafter) Flashing treatment for hip rafters and valleys

Flashing for chimney and vent stacks Copper cricket at back of chimney; also used at bottom of two sloping roofs

Flashing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roof Drainage ,[object Object],[object Object],[object Object]

Roof Drainage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Roof Drainage http://raingutterstore.com/rainGutters.asp http://www.tricountyguttering.com/raingutterinstallation.htm

Gutter Downspout ,[object Object],[object Object],[object Object]

Downspout connected to Underground Piping (splash block also common)

NEXT CLASS Thermal Protection Review Chapter 7

ACH 121 Lecture 11a (Thermal & Moisture Protection)

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