Insulating Basement Sill

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by: PMeans123 on 01/10/2009 Views 11738



Tools & Materials

  • Great Stuff spray foam insulation
  • Dow Tuff-R rigid foam insulation
  • Silicon caulk
  • Hi TempSilicon caulk
  • Wipes (if you have mold)
  • Dust mask
  • Rubber Gloves
  • Googles
  • Drywall Saw
  • Utility Knife
  • Or Table Saw
  • Drywall T-square


I first removed minimal mold dust with the wipes, then used silicon caulk to seal all wood/wood and wood/foundation connections. I then cut 2" Dow Tuff-R, foil-faced blocks to fit between the basement joists. Then I foamed them in with Great Stuff.Here's the longer story with more pictures:

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