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Cavity wall insulation with 40mm cavity

Posted: Mon Jan 09, 2023 5:07 pm
by rikkik
Hiya, anyone know of a solution to install cavity wall insulation when the cavity is only 40mm deep? The companies I've tried which have used polystyrene balls have all said its 50mm minimum and they wont do it as there will be cold spots (and trouble down the line). But surely it must be possible with smaller balls? Any ideas much appreciated.

Re: Cavity wall insulation with 40mm cavity

Posted: Thu Jan 12, 2023 10:21 pm
by stoneyboy
Hi rikkik,
Suggest you make enquiries about blown fibre CWI and see if the same restriction ]s apply
Regards S

Re: Cavity wall insulation with 40mm cavity

Posted: Fri Jan 13, 2023 12:11 pm
by rikkik
thanks S. will look into that.

Has anyone attempted DIY cavity wall insulation? Or is that crazy talk?

Re: Cavity wall insulation with 40mm cavity

Posted: Fri Jan 13, 2023 10:23 pm
by stoneyboy
Hi rikkik,
Yes that’s crazy talk!
Regards S