Originally Posted By: PaulH
Would I be correct in saying the cold is mostly coming from the floor?


Exactly what is on the other side of the three walls? Are they open to air, outside or another room, or back-filled with earth etc?

Concrete has a thermal conductivity similar to glass

W/(m K)

Concrete, dense 1.0 - 1.8
Glass, window 0.96
Plaster light 0.2
Cork, re-granulated 0.044
Styrofoam 0.033


I think you really need to make the small space sacrifice and get something on those walls, or be prepared to keep the heater running.

You'll need to do yourself a favor too with acoustics.



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