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Ok, thanks.

Hi all, So just before I move on with this, can I just get a confirmation that the general consensus would be to fill the void and not overly worry about potential hyrbrid roof problems? Thanks.

8 foot by 14 foot

Hi Jameshow, thanks for the reply. 40 inch PIR insulation and plywood board screwed up was my original idea. Although, I would have run foil tape along the underside of the rafters and the abutting edges of the PIR boards, to create a seal. But was concerned about creating a hybrid roof, as...

Perhaps the better thing to do would be to take the felt off the roof, make a warm roof and cover with new felt... that feels excessive, but maybe not that much more work and a better solution?

Hi Fitzroy, the base is sitting on raised heavy duty decking risers floating above a concrete base. I am not overly concerned about it getting damp from the ground. Like you, I also can't imagine how I would effectively and assuredy completely fill a void with expanding foam, and it seems...

I did consider putting 40mm PIR board in the void and sealing that with foam and tape, but from what I read and learned from YouTube, unless I created a true warm roof, then the next best thing was a cold roof. Otherwise, you are creating a hybrid roof, which is not advisable unless you have...

Thanks Sam93! I have considered fans. I guess my main concerns are that I would have to install a pair for each void (so that would be a fair few fans), and once I staple the insulation onto the rafters and fit the ceiling boards (3mm ply I am thinking) I would not have easy access to repair...

Thanks Fitz. I'll go on and order the trickle vents.

Hi all, New member here. I have recently erected a pent Power Shed, which I want to use a little workshop and house my little off grid power solution. I have a fair few questions about insulation and temp/damp/mould control, but I am most immediately concerned about the following. The shed...