Hi
I've just about finished my double skin brick shed and I'm about to do the roof.
My plan is for a warm roof so I'm going to lay the 18mm OSB3, then a Vapour barrier followed by 100mm celotex insulation boards. I'm thinking about putting another layer of OSB on top of the insulation before I finally lay a single sheet EPDM on top.
Can I use OSB2 11mm just to cover the insulation and put the EPDM on top? I can get hold of some OSB2 for a lot less than OSB3 which is why I'm considering it. My local merchant only carries the 11mm OSB2 and 18mm OSB3 but i think the 18mm is overkill just for a covering of the insulation.
Can someone offer some advice please? I would imagine the OSB2 would be fine but I'm no expert.
Thank you..
I've just about finished my double skin brick shed and I'm about to do the roof.
My plan is for a warm roof so I'm going to lay the 18mm OSB3, then a Vapour barrier followed by 100mm celotex insulation boards. I'm thinking about putting another layer of OSB on top of the insulation before I finally lay a single sheet EPDM on top.
Can I use OSB2 11mm just to cover the insulation and put the EPDM on top? I can get hold of some OSB2 for a lot less than OSB3 which is why I'm considering it. My local merchant only carries the 11mm OSB2 and 18mm OSB3 but i think the 18mm is overkill just for a covering of the insulation.
Can someone offer some advice please? I would imagine the OSB2 would be fine but I'm no expert.
Thank you..