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Can I insulate under a VCL?

Can I insulate under a VCL?

Can I insulate under a VCL?

I'd like to add additional insulation to a vaulted ceiling with exposed rafters by adding 70mm foil backed celotex between the rafters and plasterboarding over.

My concern is that there is an existing VCL (polythene sheet) that I'd be insulating underneath. The existing roof consists of 80mm joists/15mm fibreboard/VCL/fiberglass mat/felt//baton/tiles.

Would this cause problems later on?

by Red Squirrel

This has been automatically posted in the DIYNot Forum on DIY Talk. The new DIY Forum
 

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