Liquid Rubber Waterproof Sealant Black, 1 Gallon Covers up to 25-35 Sq ft| Roof Sealant Waterproof Coating for Indoor & Outdoor Leak Repair| Easy to Apply Waterproofing Foundation Sealer

The sealability is great! Functionality is wonderful. Thickness is superb. Ease of application. Very durable. Love the fact that this stuff will last for a long time! Great quality for the price!

Worked, easy to apply. Used a paint brush on a rubber roof.

Very good product and easy to use

This stuff is terrible. I mixed it up and used a brush to apply it and it didn’t work at all. Don’t waste you money. Horrible value for the money

Great so far

Received 5 gallon container of sealant. Tried to stir to mix contents and it was so thick it took forever. Tried to apply sealant, using roller, and it would not spread; kept sticking to roller. We added mineral spirits as thinning agent and finally got the consistency needed to apply sealant. We used one gallon of mineral spirits to a 5 gallon container of sealant.

3 sides of my garage are built 3 feet underground. Seller didn’t disclose it floods. This stuff is great. It really helped with two of the leaking walls.

We bought an old house last year with some leaks on an EPDM roof around a gutter and downspout. I cleaned the surface and smeared this stuff all over. The next time it rained everything appeared to be flowing through the gutter and downspout as it should. After going back and inspecting, everything setup nice and feels like it is adhering pretty well. I've had time to do a little more research since then and if I had this problem again I would probably just grab a tub of silicone caulk instead. A tube of caulk is easy to find at a local big box, I already have a caulking gun, and that stuff is super easy to apply. This stuff required gloves and a brush. It was just a messier, more involved process and I don't think it will last as long as silicone. But it did work, so I can't knock it too much.