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Hi everyone, I'm looking to insulate my wooden garden shed. Do i need to put in a waterproof breathable membrane before i put in the foil covered foam insulation?
Many thanks,
Cameron.

Hi Cameron,
I think it's not mandatory to use waterproof breathable membrane when you insulate a garden shed but it would be better.
There a lot of videos on youtube about it. You can see: https://www.youtube.com/watch?v=Wqz6TkZYrtc
If you prefer to contact a professional gardener for your shed I can advice you to call: /removed. Mod 2.

Assuming this is just a garden shed with no electric or heating in it.
You are aware just by insulating it will not become warm and cosy

Just assuming that it is your intention to heat the shed after insulation; you also need to consider the floor as well as walls and roof!
My thoughts on this would be to treat the existing floor as a 'sub floor' and cover it with say 50mm styrofoam. Then lay s new floor on top using the tongued and grooved chip-board flooring panels often used in lofts.

davyp1 wrote:using the tongued and grooved chip-board flooring panels often used in lofts.

Only saying.

I wouldn't do that. (The chip board) Two reasons.

T & G is a PITA to get up to change just one board.
Chip board no matter what its covered / coated in doesn't like moisture. When its raining outside and you go into your shed or put the just used hose away chances are the water will sit on the floor and.........

Its ideal for loft boarding as you never put anything wet up there, and a loft hardly gets damp to worry about, a shed does.