DIY Doctor

Breathable Membrane for Garden Shed Insulation - Shiplap on a Wood Frame

Postby afernandeza » Thu Dec 25, 2014 4:30 pm

I have started to insulate my garden shed using glass mineral wool. The walls of the shed are just shiplap wood cladding on a wood frame. I intended to just fit the wool directly on the wood cladding inside, and then cover everything with MDF boards. However, someone recommended me to tack a breathable membrane to the walls before fitting the wool. Does this make sense? What difference will this make?
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Simply Build It

Postby Colin Evans » Tue Feb 03, 2015 12:24 pm

Yes. The membrane will allow moisture in the form of water vapour to escape from inside the building, avoiding a buildup of condensation. Kingspan explain it well on their website, google Kingspan breathable membrane for a full explanation.
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