Liquid Rubber Multi-Surface Waterproof Sealant, Black, Indoor & Outdoor, 1 Gallon
Liquid Rubber Multi-Surface Waterproof Sealant, Black, Indoor & Outdoor, 1 Gallon
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Liquid Rubber Multi-Surface Waterproof Sealant, Black, Indoor & Outdoor, 1 Gallon

Key item features

  • Highly Flexible & Durable: Final membrane has over 1000% elongation preventing adhesion failure and is UV stable, stopping sun degradation.
  • Environmentally Friendly: Water-based, containing no solvents, VOCs, or harmful odors. Safe for humans and pets, suitable for indoor and outdoor use.
  • Coverage Details: Vertical surfaces - 1 gallon covers 30 sq ft with 3-4 heavy coats. Flat/ponding surfaces - 1 gallon covers 15 sq ft with 4-5 heavy coats.
  • Versatile Applications: Ideal for flat roofs, metal roofs, sloped roofs, planter boxes, foundations, ponds, sheds, basements, metal, wood, concrete, and more.
  • Application Guidelines: Apply when temperature is above 40°F (5°C) to a dry, clean surface. Typically cures within 24-48 hours. Avoid application in wet conditions or if rain is forecasted within 24 hours.
  • Easy Clean-Up: Use soap and water or mineral oil to clean skin after application.
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Current price is $69.95
Price when purchased online
  • Free shipping
  • Free 30-day returns
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Arrives by Mon, Jun 22
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Sold and shipped by Liquid Rubber Coatings Inc.Pro Seller
4.622641509433962 stars out of 5, based on 53 seller reviews(4.6)
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About this item

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Customer ratings & reviews

4.8 out of 5 stars
stars200 ratings106 reviews
How item rating is calculated
5.0
4.7
5.0
5.0
3.8
2.9

Reviews summary

Pros

  • : Suitable for various repair tasks.
  • : Requires minimal effort and is straightforward.
  • : Has a natural appearance when used with water.
  • : Offers great performance at this price point.
  • : Provides long-lasting protection for various roof types.

Neutral

  • : Can be effective, but may vary in sealing performance.
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Showing 1-3 of 106 reviews

Sep 6, 2025
Bob S.
5 out of 5 stars review

Seller Verified Purchase

A feeling of security at being leak proof.

Haven't had rain so cannot comment on the waterproof aspects of the product. However I can tell you that a physical inspection tells me there will be no issues. The sealant goes on like a thick tar. I kept feeling it as it remained somewhat sticky for a few days. Eventually it was not sticky and felt like a solid hard tar finish. I can tell this will do a fantastic job. I will be ordering more of this in the coming years should the new coating appear to be breaking down. Time will tell. Bob S.

Review from LiquidRubber
Helpful?3MUK2JG2X084670461008
reply from Technical

Thanks for the great feedback and be sure to let us know how it performs over the long term.

Sep 23, 2025
Wild Bill
5 out of 5 stars review

Seller Verified Purchase

Sealant

Goes on thin so use about 4 - 6 light coats. Flashes off within 15 min. in warm temps & is easy to use. Keep stirring can as it'll 'skin' over in warm sunlight. Will seal effectively after it's cured!

Review from LiquidRubber
Helpful?3MUK2JG2X084670461008
reply from Liquid Rubber Technical Support

Thanks for the great review! Awesome customers like you are why we work so hard to make the highest quality water-based waterproofing solutions available. Be sure to follow the guidelines to ensure a successful project. And remember we are here to support you before, during, and after your project. Have a great day!

Sep 9, 2025
Devin
5 out of 5 stars review

Seller Verified Purchase

Amazing Product

This is a great product, been having problems with my roof for years and this has finally fixed it

Review from LiquidRubber
Helpful?3MUK2JG2X084670461008
reply from Technical

Glad we were able to solve your problem and thanks for the great feedback!