BSRIA's Saryu Vatal spoke at the recent CBxchange event regarding housing. Saryu looked at common issues in the existing domestic building stock in the UK and how we can close the loop.

1. 1
Making buildings better
Changes in the domestic sector
Delivering energy efficiency
Saryu Vatal
BSRIA

2. 2
Making buildings better
2010
25%
reductions in
CO2 emissions
over 2006
2013
8%
reductions in
CO2 emissions
over 2010
2016
All new dwellings
to be ‘Zero
Carbon’ (regulated
energy)
2019
All non-domestic
buildings to be
‘Zero Carbon’
(regulated energy)
2050
80% reduction in CO2
emissions due to
operational energy use
from 1990 levels in all
buildings
At least 90% of all
new homes meet
or perform better
than the designed
energy / carbon
performance.
2020
Introduction of the
concept of Fabric
Energy Efficiency
Standard (FEES)
2009
2006
Change in compliance
method from 3 optional
routes to single route
via SAP calculation for
CO2 emissions only
Clarification of scope
of ‘zero carbon’ to
include regulated
energy use only
2011
Private rental
properties to meet
minimum Energy
Efficiency standards
2018
Gas and
electricity smart
meters to all
homes and small
businesses
2020
policies and targets

3. 3
Making buildings better
2010
25%
reductions in
CO2 emissions
over 2006
2013
8%
reductions in
CO2 emissions
over 2010
2016
All new dwellings
to be ‘Zero
Carbon’ (regulated
energy)
2019
All non-domestic
buildings to be
‘Zero Carbon’
(regulated energy)
2050
80% reduction in CO2
emissions due to
operational energy use
from 1990 levels in all
buildings
At least 90% of all
new homes meet
or perform better
than the designed
energy / carbon
performance.
2020
Introduction of the
concept of Fabric
Energy Efficiency
Standard (FEES)
2009
2006
Change in compliance
method from 3 optional
routes to single route
via SAP calculation for
CO2 emissions only
Clarification of scope
of ‘zero carbon’ to
include regulated
energy use only
2011
Private rental
properties to meet
minimum Energy
Efficiency standards
2018
Gas and
electricity smart
meters to all
homes and small
businesses
2020
policies and targets

4. 4
Making buildings better
Source: Ian Mawditt/Innovate UK
where we are

5. 5
Making buildings better
Source:BSRIA
where we are

6. 6
Making buildings better
Source: Ian Mawditt/Innovate UK
where we are – the ‘user’ factor
Source: AimC4

7. 7
Making buildings better
• inadequate/insufficient
information to site
• lack of integration from
early stages
• lack of consideration of
access for maintenance
and repairs
• lack of skills, especially
for new systems
• impact of changes, often
at site, not accounted for
• inadequate verification
with regards energy
common issues

8. 8
Making buildings better
Solar thermal
Hot water
cylinder to
gas boiler
Exhaust air
heat pump
• complexity in services
and controls strategies,
which could include:
• mechanical ventilation
• space and water
heating
• renewables
• efficient performance of
systems often relying on
residents understanding
and engaging with these
• inadequate consideration
of requirements of users
and practicality of use
common issues

9. 9
Making buildings better
Controls
• not clear or effective
• inaccessible
• too complex
• automatic controls often
overridden
Handover and guidance
• insufficient, often not with
the home user
• generic, not specific to
dwelling or development
• instructions not in English
common issues

10. 10
Making buildings better
not just technology!
Source: Richards Partington Architects/NF44 Understanding overheating – where to start

11. 11
Making buildings better
• Walkthrough
• Interviews
• Surveys
• Fuel bills
• Meter readings
• Smart meters
• Measurements
• Tests
• Monitoring
• Process/ information
review
Troubleshooting Energy use trends Detailed
investigations
1 2 3 4 5 6 7 8 9 10 11 12
kWh/£
closing the loop