DIY Doctor

Vapour Barrier in Metal Shed After Insulating

Postby JonDoh » Mon Dec 05, 2016 12:51 pm

Hi all,

Think I might be answering my own question, but I am a real noob when it comes to building and the like.

I have a metal skinned shed, its fairly air tight as it stands, 100% water tight (and surprisingly little condensation) and will in the future be heated + power ventilation.

I have lined the interior with RWA45 I acquired cheap but have got to the point where I fitted all the insulation but have read I should install a vapour barrier.

it occurred to me that the metal skin is going to act as a vapour barrier itself, all be it on the wrong side of the insulation.

So do I skip this step as I don't want to trap moisture between the interior and exterior walls?
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