How can I insulate the floor in a 4 seasons room?


We have a 4 seasons room with Azek porch flooring. We used spray foam on the sides of the joists but ran out and don't want to spend another $300 for more foam. How can we finish off this area for insulation? Rigid foam will not be close enough to the floor to work due to sides having spray foam?

  5 answers
  • Cynthia H Cynthia H on Oct 09, 2019

    Can you access the floor underneath?

  • Kelli L. Milligan Kelli L. Milligan on Oct 09, 2019

    Can you fill in with insulation batting? That may cost more than the foam? I'd get a fun area rug that you can still use and just save up for the foam. The rug will help some.

  • William William on Oct 09, 2019

    Foam board or more foam insulation. I would have used two to three layers of foam board.

  • Beth Beth on Oct 10, 2019

    if there are spaces between the floor boards then batt insulation is a bad idea, batts have to be closed to air from all six sides or you might as well have nothing, it would just behave like an air filter. I agree with foam board or spray foam insulation, it doubles as vapor barrier so you don't have moisture issues.

  • Kmdreamer Kmdreamer on Oct 13, 2019

    Get Owens Corning you could get rolls for 20.00 and staple it up