What's the best way to cover my summerhouse roof. I've just finished putting the roof on, it's 5m x 3m and is made up of 28mm thick T&G planks so is fairly substantial. There is a fall of 1 in 50 down the 5m length. I have been advised with it being T&G and therefore prone to movement I would need an underlay felt down first and them two layers of mineral felt on top. Is this overkill, would one layer of good felt properly fitted really not work? I don't want to bodge it but 3 layers of felt is going to be difficult to work with IMO, especially on the corners.
No idea, but after all that work and such good quality materials, I personally wouldn't use out-dated felt... Surely the likes of EPDM would be FAR superior, and not much extra cost (if at all)? Especially if there's going to be movement; I believe felt is a bit prone to cracking when flexed - expanded and contracted.
Yeah thanks, I was thinking of EPDM I'm just worried with it being T&G and EPDM being like 1.2mm thick, it will sit in the grooves between the boards if you know what I mean?
You will need to ply over for a decent finish, the boards will show through the rubber. Put a perforated felt layer on first ( lightly tacked ) then I green mineral cap sheet, torch on.
Mr HandyAndy. Not sure what you mean?? The groove isn't up at all. The gap I refer to is the chamfer/ rounded edges on the boards where they butt together. The boards are laid flat there isn't an up side or a down side. Previous poster Cotswold thanks
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