Thompson's WaterSeal Clear Multi-Surface Waterproofer, Clear, 1 Gallon
Thompson's WaterSeal Clear Multi-Surface Waterproofer, Clear, 1 Gallon
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Thompson's WaterSeal Clear Multi-Surface Waterproofer, Clear, 1 Gallon

Key item features

  • Product Identification: This product is identified as Thompson's WaterSeal Clear Multi-Surface Waterproofer, supplied in a 1 Gallon volume.
  • Transparent Finish: Its clear formulation dries clear, helping to maintain the natural color of the treated surfaces.
  • Damage Prevention: The primary function of this waterproofer is to help prevent water damage on the various surfaces where it is applied.
  • Versatile Application: It can be utilized as a wood sealer, a brick sealer, or for concrete waterproofing purposes.
  • Proven Surface Protection: This product is proven to specifically waterproof concrete, brick, and exterior wood surfaces.
  • Broadened Compatibility: Its proven waterproofing capabilities extend to encompass other exterior surfaces as well.
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Customer ratings & reviews

4.3 out of 5 stars
stars
793 ratings338 reviews
How item rating is calculated
  1. 5 stars71% (563)
  2. 4 stars11% (89)
  3. 3 stars4% (35)
  4. 2 stars2% (17)
  5. 1 star11% (89)

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Showing 1-3 of 338 reviews

Oct 15, 2025
Ray
5 out of 5 stars review

Verified Purchase

Nothing Lasts Forever

Using untreated wood outdoors will deteriorate quickly unless it's protected. Thompson is my preferred water sealing sealing product. It won't keep the wood safe forever but it does extend its life. My little garden windmill was sealed with Thompson and stayed good looking for 5 or 6 years before i had to cover the good looking wood with paint. My new greenhouse has a particle board floor raised 6 to 10 inches off the ground but to be safe I sealed both sides of the sheathing with Thompson.

Helpful?4KQ6J7P0KZVE17300259
Jan 4, 2026
ANGIE
Top Reviewer
5 out of 5 stars review

Verified Purchase

Great for outside deck

Easy to apply by brush. We coated our outside deck and it repelled water nicely. Doesn’t smell badly going on. Be sure to let it dry completely before touching or walking on it. Also do on a nice day, no wind, as leaves and dust will stick to it.

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Jul 5, 2026
Eric
5 out of 5 stars review

Verified Purchase

Easy to use

Use inexpensive adjustable sprayer, plastic with blue and yellow top. It's absolutely forgiving a klutz like me did great. Carry a wet microfiber rag to wipe off overspray.

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