Super E Housing - Good Homes Alliance

Super E Housing
Build Tight – Insulate Right – In practice
John Mathers
Sustainability & Energy Consultant
at The Intelligent Design Centre
UK Director of
Interhabs Canada Limited
What’s my motivation for this part?
What’s my motivation for this part?
• Can’t I just design and build the same
type of houses that I’ve always done?
What’s my motivation for this part?
• The short answer is No.
The drive towards change and
improvement…
• In an industry driven by a combination of
market forces and building legislation the only way forward is the road towards
sustainability.
So what does it all mean in practice?
So what does it all mean in practice?
• New build clients will seek your
assistance on gaining planning approval
against the Code for Sustainable Homes
Code levels 4,5 & 6
With the introduction of the Code for
Sustainable Homes…
• Will you need to reinvent the wheel?
With the introduction of the Code for
Sustainable Homes…
• Will you need to reinvent the wheel?
• Will your solutions satisfy the planners?
With the introduction of the Code for
Sustainable Homes…
• Will you need to reinvent the wheel?
• Will your solutions satisfy the planners?
• Do the planners know what they should
be demanding in the first place?
In a confused world, it’s good to
know you’re not on your own.
In a confused world, it’s good to
know you’re not on your own.
• Manufacturers have been busy
addressing these very problems..
In a confused world, it’s good to
know you’re not on your own.
• Manufacturers have been busy
addressing these very problems..
• There’s a range of low carbon solutions
out there if you look around.
Super E in the UK
•
•
•
•
Over 600 homes in the past ten years
A reliable route towards Code 6 (CfSH)
Most economical way to “zero carbon”
Registered & Certified UK Supply Chain
If this is the shape of Low Carbon housing?
What about this?
….or this?
….or this?
….or this?
They are all low carbon –
and they’re all Super E.
• It’s the approach, not the “stuff”. It’s how it
works – not how it looks.
• And here’s how:– Reduce energy consumption
– Take advantage of passive
– Then add renewable energy
In that order!!
You can’t beat the laws of Physics
• Heat will always move from HOT to COLD
• Warm air rises
• Condensation occurs when warm air hits a
cold surface
• Warm air holds more moisture than cool air
Managing a “house as a system” means:•
•
•
•
Controlling Heat Flow
Controlling Air Flow
Controlling Moisture Flow
Impacting on Occupant Health – We’re all in
this together!
Heat Flow
•All heat flows from hot to cold as a result of:
–Conduction
–Convection
–Radiation
•The rate of heat loss is determined by:
–Area of the assembly
–Temperature difference
–Thermal resistance
–Air leakage
These are the issues that drive our house
design, set out the way we manage the
build process and influence the
technology we adopt
Wall technology, pre engineered in
factory conditions…
Cavity insulation should fill cavity
Outside
Winter
Inside
Cooled air
behind the
sheathing
drops
As air comes
into contact
with the interior
finish it warms
rising while
cooling the
Interior
High performance
windows and doors
which are timber frame
friendly, which look the
part and perform well…
No Pizza Box
calculations….!
Continuous air barrier
Continuous air barrier details
Air Barrier Products
Sheet
Rubber
Gaskets
Airtight Electrical
Boxes
Low Density
Closed Cell
Adhesive Backed
Foam Tape
Airtightness Testing
• Measures airtightness
of building by depressurisation
• Equivalent leakage area calculated
C 1996 INTERNATIONAL ECO-HOUSE INC.
•Helps in locating leaks
•Excellent quality control tool
Whole house mechanical ventilation
Whole house mechanical ventilation
Mechanical Heat Recovery Ventilation
• Controls humidity
• Controlled ventilation
• Even heat distribution
• Can be filtered
Heat recovery – up to
90%+ with counterflow
core technology
Annual Heating Load for a 120 M2 Dwelling here
in Glasgow
Annual heating load due
to conduction through the
building envelope
80000
70000
60000
Total Annual Space
Heating Load (MJ)
50000
Skin Transmission Losses
40000
Air Exchange Losses
Annual heating load
due to uncontrolled
air leakage at various
airtightness levels
30000
20000
10000
0
2.0
3.0
7.5
10.0
12.0
15.0
Air Permeability (m3/h.m2 @ 50 Pascals)
Build Tight –
Insulate Right.
Super E Houses
Reduce air leakage: Saves energy and GHG emissions
• Moisture control strategy: Improved health, increases
building durability
• Mechanical ventilation: Improved health
EVERY HOUSE TESTED AND CERTIFIED PASSED!
• Energy consumption simulation
• Ventilation balancing
• Air leakage testing
Super E Houses
Build to a higher standard
Super E Houses
As traditional as you like…
Super E Houses
In tune with the local environment
Super E Houses
Out of the box – but not looking like one!
Super E Houses
Living to a higher standard
Super E Houses
Inside and out…
Super E Housing
Provide clients with a higher quality of life
Build-in the benefits of saved energy £s
Create designs which prevent the heat leaking
out the windows, the walls and the roof
Pass on the health benefits of a well ventilated
moisture controlled environment
Reduce CO2 emissions - it won’t cost the earth
Super E Housing
Thank you
If you’d like further information, please take a
card, a newsletter or brochure or check out
super-e.co.uk or Interhabs.co.uk
And please welcome Mark Hanson