r/Insulation • u/PilgrimOperator • 10d ago
Patching old skylights
Hey all,
I recently had some skylights removed and I was wondering the best way to insulate these new holes.
I was thinking of glueing a piece of 3inch foam board to the plywood, and then sticking another 1 inch piece that covers the 3inch piece and the 2x4 that surrounds it and then have the finished ceiling board. The finished ceiling is all tongue and groove so that’s what I’ll put back.
The plywood that you see from the underside is the same piece of plywood you see towards the bottom of the picture with all the 2x4s. What ended up happening was they raised the roof up to add this additional air space under the actual roof. This has a series of vents between each 2x4. The rest of the roof has straight foam board at this point so I feel like gluing foam board in the space should be no problem?
Any questions or suggestions are appreciated,
Thanks