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BER from C2 to B2 with Cavity Wall/Attic Insulation

ian123 · 2023-05-19 11:11:53

Hi is it realistic to believe that a 2004 built house would gain a B2 BER (from C2) after having cavity walls pumped (~180m2) and additional attic insulation (from 100 to 300mm) (~100m2)? the energy rating was 171.43 kWh/m2/yr before the work, and rated at 112.49 kWh/m2/yr after the work. the house is a 2 storey detached…

19-05-2023 12:11PM

#1

ian123

Registered Users, Registered Users 2 Posts: 36 ✭

Join Date: April 2010

Posts: 30

Hi
is it realistic to believe that a 2004 built house would gain a B2 BER (from C2) after having cavity walls pumped (~180m2) and additional attic insulation (from 100 to 300mm) (~100m2)?
the energy rating was 171.43 kWh/m2/yr before the work, and rated at 112.49 kWh/m2/yr after the work.
the house is a 2 storey detached house, total floor space of 220sqm

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Comments

#2 19-05-2023 09:19PM

Biker1

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Join Date: September 2020

Posts: 420

Not a chance of that much of an uplift with those measures alone.

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