Insulation, Radiant and Vapor Barriers - sill plate does not fully cover cement blocks
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thowes
01-25-06, 04:40 PM
The builder put some insulation in the sill box of our basement, but there is quite a breeze coming up through the cement block where the sill plate does not fully cover the blocks. Should I put insulation down in the blocks or just put more insulation in the box? I will be eventually finishing most of our basement if this makes a difference.
doug thomas
01-26-06, 08:51 AM
What R-Value do you have? Maybe you need to increase the R-Value.
Ok, just kidding.
It's perfectly acceptable to add a horizontal piece of foam board to cover the masonry. Climate will determine whether or not it should be a breathable material or not. And remember to seal with caulking foam or a good tape, since you won't have access to it after the wall is finished.
Ok, just kidding.
It's perfectly acceptable to add a horizontal piece of foam board to cover the masonry. Climate will determine whether or not it should be a breathable material or not. And remember to seal with caulking foam or a good tape, since you won't have access to it after the wall is finished.