Waterproofing a Foundation Stem Wall
I’m struggling to get a clear answer on this:
Is it necessary to waterproof the downhill side of a foundation stem wall? We’re building on a hillside, and of course we have drainage and waterproofing on the uphill side of the foundation, but I’m not clear if it’s necessary on the downhill side. The slab will be at least 3′ above grade on the downhill side and the downhill side of the home will have a 8′ concrete deck sloped towards the downhill side, so in theory, little to no water should get to the downhill side in the first place. Of course I could just play it safe and waterproof it anyway, but I try to avoid waste if it’s a safe bet.
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