Air-Sealing an Insulated-Slab Perimeter
Apologies if this question has been asked before on GBA (I’m sure it has), but I’ve had trouble following some of the more technical answers.
I’m trying to learn, in layman’s terms, how can I air seal the perimeter of my poured concrete foundation slab. There is Roxul insulation around the perimeter (see attached photo). There is also Roxul underneath the slab with polyplastic over that. The plastic was taped up onto the foundation walls, but no one besides the concrete contractor was on site at the time the slab was poured. Being unfamiliar with this process, the contractors cut it off 🙁
The builder that was hired to construct the “weather tight shell” assured me after this mistake that there was a “plan b.” Unfortunately, we’re no longer able to work together (because of lots of neglected details like this — some much more serious). So it is up to me now to get this home air, water and weather tight, and I never knew what that plan b actually was.
Can anyone advise on the simplest, yet effective way to achieve air sealing the foundation slab at the perimeter? Or if there is a good youtube video you can link to, that works as well.
Thanks so much!
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