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Community and Q&A

Foundation waterproofing

user-831496 | Posted in Green Products and Materials on

My contractor wants to use Watchdog waterproofing (asphalt emulsion waterproofing product) for a new cement foundation. I have chemical sensitivities. Should I avoid this product? Are there any alternatives?

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  1. Armando Cobo | | #1

    Here is one product you can check on. Call their office for a rep. or sales infor in your area.

  2. Riversong | | #2

    Asphalt emulsions are damp-proofing only, not waterproofing. I would recommend latex UGL Drylock brush-on masonry sealer (two coats). It's what I use on all sub-grade or exposed concrete and block.

  3. Armando Cobo | | #3

    Waterproofing membranes like Delta-S, Delta-Drain or Certainteed’s Platon are high-density polyethylene, usually made of 60%-90% recycled material with 20-30 years of warranty and no or low-VOCs. Must Exterior Concrete sealers, do have VOCs and have 1-10 years of warranty, including Drylock. There are some soy-based concrete sealers but you must reseal often, that’s not good for foundations.
    Delta also has good roof underlayment, water resistant barriers (WRB) and rain screens that will work well for your application. Check their website.

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