I enjoy a flat roof incorporation. The roof have roll roofing on top thats out-of-date and 2x6 rafter. The room is 15x15.? Can I remove the roll roofing and put 1/2 inch fiber insulation...
Can I remove the roll roofing and put 1/2 inch fiber insulation board and a rubber roof(epdm, firestone,john mansville)? I just looked-for to make sure the solidity would be supported. It has a drywall ceiling underneath.
The rolled roofing can be removed and there will be any plywood or some other wood sheeting under it. You could place the insulation over the wood substrate and the trial roofing material over it. I//2" fiberr insulation is not really going to do much. You would be better stale blowing in celulose between the 2x6s.
This might be a good time for a total slit off. clean state of the art insulation between the rafters, and spanking new plywood sheathing, installed with a slight pitch away from the prevalent house.
You want a tight roof, that will last for years, and a nouns surface to put it on is the first step.
Answers: Let me address the reality that you have a 15' ft. span near 2x6 rafters. That is a bit of a stretch for 2x6. I would be completely careful give or take a few how much more weight you donate to this.