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Cavity wall insulation on extension's 'internal wall'

10-10-20 · 2021-11-29 11:15:32

In a situation where an single storey extension is built onto a house with pre-existing 100mm cavity with 50mm PIR insulation in the adjoining wall, how is the insulation and condensation runoff normally remediated to prevent a cold wall and associated problems? Is it common to have the wall partially pumped, or is…

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29-11-2021 12:15pm

#1

10-10-20

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In a situation where an single storey extension is built onto a house with pre-existing 100mm cavity with 50mm PIR insulation in the adjoining wall, how is the insulation and condensation runoff normally remediated to prevent a cold wall and associated problems?
Is it common to have the wall partially pumped, or is vermiculite used to backfill the void?
The reason I ask is that I have a cold wall on my extension and I'm trying to work our my options to remedy it.

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