Insulate wooden shed

[TryAgain1]

To insulate a wooden shed I'm thinking of stapling breathable membrane to the inside, then put mineral wool (or block insulation) against this membrane, then 3mm ply board (or spare 18mm chipboard) against the insulation. Finally to finish off I would cut occasional circular holes through the ply/chipboard (from the inside) and put 50mm circular soffit vents ensuring that the insulation was vented from the inside. That way no accidental leaks.

Do I need to use silicon sealant to seal any gaps in the wooden tongue/groove panelling?

 

[Wayners]

I would use 25mm kingspan or similar cut tight and seal so air tight.
Problem with rockwool is mice love it.
Also not so good as foam insulation.

You can add vents.

 

[noseall]

To insulate a wooden shed I'm thinking of stapling breathable membrane to the inside, then put mineral wool (or block insulation) against this membrane, then 3mm ply board (or spare 18mm chipboard) against the insulation. Finally to finish off I would cut occasional circular holes through the ply/chipboard (from the inside) and put 50mm circular soffit vents ensuring that the insulation was vented from the inside. That way no accidental leaks.

Do I need to use silicon sealant to seal any gaps in the wooden tongue/groove panelling?

Breathable membrane goes on the cold side of the timber structure i.e. behind the exterior cladding.
Fix foil covered PIR internally and foil tape the joints.

 

[endecotp]

Why would you want to insulate a shed?

 

[nickjb]

"Why would you want to insulate a shed?"

Why insulate any building. It keeps it warmer in winter and cooler in summer. I've insulated mine and it's much better for it.

 

[TryAgain1]

Carrying on the thread - I have now insulated the shed with a mix of 50mm block insulation and 50mm mineral wool and put breathable membrane both sides. Am now cladding the inside of the shed using a mix of 18mm chipboard and 3mm plywood.

I think I can use a 18 gauge nail fired from a nailgun on the 3mm plywood but can I use a 18gauge nail on the 18mm chipboard?

Otherwise I was going to get a 90mm (max penetration depth) 1st fixing nailgun which uses 16gauge nails. Something like one of those Dewalt ones but I want a corded (electric) or (if I have to) a battery powered one. Is there a recommended 16gauge nail and 90mm corded/battery nailgun?