foam board on ceiling above sheetrock
#1
02-17-14, 07:38 AM
Join Date: Feb 2014
Location: usa
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foam board on ceiling above sheetrock
I'm adding a little bumpout to my house. It will be a nursery for a couple years before it becomes an office or storage.
There isn't going to be a lot of room in the ceiling for insulation and I can't afford spray foam right now.
I was thinking of putting up either half inch pink foam board or the foil faced yellow urethane foam on the joist. I would start with the outside side of the of the space, where the roof joists meet the outside wall. Here there is very little room at all for insulation. Just a few inches. I was thinking of putting great stuff on top of the foam board so it fills in to the foam air baffle (at the very narrowest side) below the roof sheeting.
I might put a 1 inch layer of great stuff above the rest of the ceiling by doing only a small section of foam board at a time. Then I would fill in unfaced fiberglass above that. Sheetrock would go below the foam board.
Does this sound like a workable idea? Would there be a condensation concern?
Thanks to anyone who can help.
There isn't going to be a lot of room in the ceiling for insulation and I can't afford spray foam right now.
I was thinking of putting up either half inch pink foam board or the foil faced yellow urethane foam on the joist. I would start with the outside side of the of the space, where the roof joists meet the outside wall. Here there is very little room at all for insulation. Just a few inches. I was thinking of putting great stuff on top of the foam board so it fills in to the foam air baffle (at the very narrowest side) below the roof sheeting.
I might put a 1 inch layer of great stuff above the rest of the ceiling by doing only a small section of foam board at a time. Then I would fill in unfaced fiberglass above that. Sheetrock would go below the foam board.
Does this sound like a workable idea? Would there be a condensation concern?
Thanks to anyone who can help.
#3
02-18-14, 09:30 AM
Why not cut foam to fit between the ceil. joists and place them just above your bottom edge and foam seal the edges with the great stuff.
Great stuff in a can in designed more for gaps rather than surface application. If you want to get a small spray kit of 2 part spray foam you can find those on line or probably get through an insulation contractor.
Great stuff in a can in designed more for gaps rather than surface application. If you want to get a small spray kit of 2 part spray foam you can find those on line or probably get through an insulation contractor.
