Shed roof insulation

tcha

Hi I'd like to get advice on insulating my shed roof.
I've read up online about insulation and it's pretty confusing so I'm going to post a couple pictures up here and see what you's say.

I was thinking of putting insulation board up between the rafters and I'm wondering whether its essential to add a vapor barrier. I'd like to keep it as simple as possible but I want to do it right as well. I was also wondering if insulation roll might be a cheaper and effective option but will it get damp and create mold etc? There won't be many people in the shed, mostly just me for a few hours during the day so I cant imagine there will be much moister in the air.

What do you guys think? Is it ok just to put some insulation board up there and nothing else? Any recommendation?

Here are links to photos (cant upload links as a new user so just remove the spaces)
ibb .co /dWWvjpm
ibb .co /zNwW0CB
ibb .co /nk1N6MX

Calahonda52

can you describe the shed construction and the roof construction please and what will it be used for.
Too much malware on the site for my liking

jetfiremuck

I used large bubble wrap with chicken wire against a metal roof. Worked great.

Lumen

What's the rafter depth and spacing?

tcha wrote: »

cant upload links as a new user so just remove the spaces

The pics...

Phil.x

A quick way would e to use some of these boards, a better way is to use rolls of insulation and then insulated plasterboard, but €€€
https://www.build4less.ie/insulation-materials/floor-insulation.html

tcha

They're exactly the boards I was looking at. I'm just not sure whether I'd need to add a vapor barrier after. If its flush against the wood I'm assuming its wont condensate and therefore wont grow mold... but I'm not sure.

tcha

Thanks for posting the photos! The depth is 115mm, but its slightly pitched so its 160mm at the highest. The width is 390mm.