I'm planning a house extension.
I know that U value regs are going down all the time, and perhaps that
is why people use the dreaded thermal blocks for the inner leaf of
cavity walls. But there is no way I'm using them. My house is all
internal brick walls, very solid, and I need to use denser concrete
blocks that you can fix to.
What cavity / insulation will be required when not using thermal
blocks. Will I need a wider cavity, different insulating batts etc ?
Simon.

On 4 Oct 2005 07:55:54 -0700, a particular chimpanzee named
sm_jamieson@hotmail.com randomly hit the keyboard and produced:


>How strong are the thermal blocks ? I mean they could be supporting a
>2nd storey.


2 storeys, fine.  3 storeys and you have to use ones with a load
bearing ability of 7N/mm.
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Hugo Nebula
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