Heat Loss

[BruceB]

The Domestic Heating Design Guide lists the following U values for use in heat loss calculations:

Solid stone wall, unplastered

305 mm U = 2.78 457 mm U = 2.23 610 mm U = 1.68

for comparison:

Solid brick wall, dense plaster

102 mm U = 2.97 228 mm U = 2.23 343 mm U = 1.64

[John Rumm]

Quite possibly... I have swapped them for now unless someone can find more authoritative data.

[Grimly Curmudgeon]

Go and read some basic physics then.

[Vir Campestris]

Well, Bruce has quoted the U values upthread, showing that the heat doesn't just keep going, it has trouble getting through. Less trouble with stone than brick, but still some. A foot thick stone wall seems about the same as a single skin brick wall.

Andy