Sodo
Elite Member
- Joined
- Apr 21, 2012
- Messages
- 3,197
- Location
- Cascade Mtns of WA state
- Tractor
- Kubota B-series & Mini Excavator
I have a flat roof that has sagged to hold about 1/2 inch of water but is no longer watertight. It's an add-on, done probably 30 years ago, has torchdown on it. I'm studying the idea to build in a slight slope with PolyIso foam sheets. I know that you can buy sloped PolyIso sheets in several different slopes, but the roof shape is not just square and I can't figure out which sheets to buy as I'd like it to slope in x and y direction. I can figure out some sheets but it seems like I'll have to shape some myself.
?.provided there is a sensible, efficient way to shape PolyIso sheets? Is there a way to do it? Is there a hotwire cutter or some tool? Does a sanding disc cut quickly? I like the aspect of getting more insulation from the "slope", but using PolyIso seems to be getting complicated.
If nobody has experience shaping PolyIso, I'm inclined to just taper a bunch of 2x6s and sheet the slope with OSB.
?.provided there is a sensible, efficient way to shape PolyIso sheets? Is there a way to do it? Is there a hotwire cutter or some tool? Does a sanding disc cut quickly? I like the aspect of getting more insulation from the "slope", but using PolyIso seems to be getting complicated.
If nobody has experience shaping PolyIso, I'm inclined to just taper a bunch of 2x6s and sheet the slope with OSB.