Installing Basement Waterproofing from the “Negative” Side
Of course the best way to waterproof any below-grade assembly is from the exterior—but what works if you have to go from the interior?
by Peter Yost
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Negative-side waterproofing (NSW) is a tough topic that I have frankly been dancing around for quite some time. Manufacturer claims and homeowner anecdotes of successful interior waterproof solutions for basement walls and slabs did not completely add up. But I did not think that I understood the topic or the physics well enough to challenge the claims or explain my skepticism.