Green Building Forum - Cold Bridging

Cold Bridging

KateC — Thu, 08 Jan 2015 11:54:42 +0000

We are new to all this and trying to design a house extension using natural and breathable materials whilst keeping a sensible approach to affordability. We are in the north of scotland where deliveries can be expensive. Someone mentioned to me using foamglass blocks around the perimeter of the inside wall for cold bridging, someone else that this is an expensive option. The current plan is for leca base with concrete/ underfloor heating and plinth to hempcrete walls. anyone else have any ideas regarding alternatives to foamglass ?

Cold Bridging

tony — Thu, 08 Jan 2015 12:03:54 +0000

aircrete blocks? How thick will the walls be to hit the regs?

Cold Bridging

DarylP — Thu, 08 Jan 2015 20:30:50 +0000

Kate,

If you are looking for 'PH'-levels of insulation, U-values <=0.15W/m2k then yes, worry about the cold-bridging. (Marmox etc..)
If not, it won't be significant, don't worry.

Good luck..