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Which membrane

Thespoofer · 2014-09-02 17:09:41

Building a small extension on my own home at the moment. Apex roof, vaulted ceiling and rigid insulation board between each rafter. Before I put on the insulated plaster slabs on the ceiling I have been advised to use air tight membrane by one builder colleague and to use anti moisture membrane by a builder supplier. Which…

02-09-2014 5:09pm

#1

Thespoofer

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Building a small extension on my own home at the moment. Apex roof, vaulted ceiling and rigid insulation board between each rafter.
Before I put on the insulated plaster slabs on the ceiling I have been advised to use air tight membrane by one builder colleague and to use anti moisture membrane by a builder supplier.

Which one would ye advise to use please.
Thanks

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Comments

#2 03-09-2014 6:21am

DOCARCH

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An airtight membrane between two layers of rigid insulation is pretty much useless.

It's a vapor barrier that is required at some point in the build up.

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