I am an owner/renovator. Meaning I purchase neglected homes and then renovate them for rent or resale. I have a question about my current project.
I scraped the flat roof off of my house and it now has a truss roof that has a vaulted ceiling incorporated into it. I want to insulate this vaulted ceiling/roof to the best of my ability but I have a limited amount of capital for this part of the project.
I was thinking about using fiberglass bat insulation between the truss ceiling joists, and then using the Johns Manville Foil-Faced Polyisocyanurate Foam Sheathing (foam board) over that fiberglass, and of course then covering the interior ceiling with drywall.
I have about 24″ of clearance between the bottom 2×4 and the top 2×4 of my truss system.
1) Does my insulation proposal sound like the best solution for the dollar?
2) Is there a better method that you may recommend?
3) Should I just forgo the foamboard and only use fiberglass batts?
Thanks for any input.
Replies
Batts between trusses leave a void in the insulation envelope at each truss, so they are not ideal for any truss ceiling. Some kind of blown-in insulation is better, but problematic as well if the pitch of the ceiling is too high because the insulation settles. I've used batts before in this situation and I diligently stuffed the spaces within the trusses with scraps. The result was a superior insulation job, but it took a long time.
Good thoughts. I hadn't thought about the spaces between the trusses. I think the pitch will be to steep for blown in. That's why I was also leaning towards the foam board.
Thanks,