Sill plate insulation

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Location: Canada

Sill plate insulation

Post by mbrini » Thu Sep 19, 2019 6:18 am

Hi , my sill plate is flush with my foundation wall, should i apply foam filler in the gap
or since i will apply 1'' rigid foam on all foundation walls i just leave it like that

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Location: Canada

Re: Sill plate insulation

Post by Shannon » Thu Sep 19, 2019 6:51 am

After the 1" foam is installed and sealed with spray foam it will be fine, but if its a big enough gap to get the straw into you could also seal it with spray foam first as added protection ,once its dry cut the excess off so the foam sheets sit nicely.
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