In the process of adding a small addition to the side of my garage. Here in MA we need to have foundation walls and footings ~4′ deep, backfill and then add the slab at grade height. Is there any benifit to damproofing the foundation walls? Is there any code that requires it? Attached is a jpeg of the foundation detail…
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only your local code dresser knows for sure
I can't answer that, but why
I can't answer that, but why are you insulating a garge floor?
Soory for the confusion, that was an old revion of my plan current does not call for the insulation...
Codes are very local, so I can't answer that.
However, if you do put a vapor barrior under the slab, be sure and seal the entire slab against vapor until it has cured for at least one week to prevent edge curling.
Actually, that is a good idea even if the bottom isn't sealed, 'cuz it gives a much better cure.
Thanks for the tips. Local BI said no need to damproof the foundation. I do need to insulate (R10). Hope to get it insulated and re-tarped tomorrow before the big storm.