Extra large wood sheets for shed roof

sjb92

Hi everyone

We recently moved into a house which came with a shed in the garden. I would guess, based on other stuff the previous owners had, that the shed dates to the 1970s - but it has been well looked after and is still in good condition... except for the roof where the felt has worn through and the plywood sheet underneath has now sagged with the damp.

So I need to replace it. Except I'm having trouble finding ply sheets big enough. The roof all slopes in one direction and is 2800mm by 1400mm, made up of two sheets each 1400mm by 1400mm. (These all overhang the edge of the shed and there are three beams equally spaced to support the middle of each piece and the join.)

Our local builders' yard (who I try to use instead of a big chain) can't supply anything larger than 1200mm by 2400mm, so their only suggestion is to get four pieces of wood and cut them down to 700mm* by 1400mm.

This (a) seems like a waste of wood and (b) doesn't feel like it's very moneysaving. Does anyone have any advice on other ways to do it and/or people who can sell and deliver 1400mm x 1400mm ply sheets?

Thanks very much in advance!


(*Actually slightly different widths because two will have the overhang, but you hopefully get the idea.)

leveller2911

Google 10'x5' (3050mm x 1525mm) ply .

Best thing for shed roof would be 18mm OSB Stirling board or 18mm Marine ply.Idealy you should have rafters every 600mm spacings to have good support.If you add some supports you can use standard 8x4 sheets.

Do not buy WBP (Water & boil proof ply) its not water or boil proof any more........

Gloomendoom

You could use tongue and groove floorboards. IIRC they are available in 3 metre lengths.