Liquid Rubber Waterproof Sealant – Clear 18oz, Flexible, and Durable Coating for Roofs, Bathrooms, Foundations & More | UV & Weather-Resistant, Leak-Proof Protection for Indoor & Outdoor Use

My old family house suffered from severe wall leaks, with mold growing in the corners. This liquid rubber sealant was a revelation! The 35oz container allowed me to spread it smoothly with a trowel. Once dried, the black rubber layer is incredibly stretchy—I pulled it hard with my fingers, and it didn't tear. After several heavy rains, no more leaks! I even fixed window gaps with it. Great value for money!

My dad struggled with a leaky garage floor, so I got him this sealant. He was amazed at how simple it was—just pour, spread, and let it dry. The black finish blends seamlessly, hiding all the cracks. It withstands extreme sun and rain without cracking. Now he uses it for everything from patching planters to sealing pipes. He says it's the most useful item in his toolbox!

but it does a pretty good job on the old yellow rain slicker. Just be careful not to sit on anything until it’s dry. I was unsuccessful at getting it off my car seat.

Bought it for garage cracks, but it became my household hero! Coated my roof twice—it withstands scorching sun and hail. Sealed my fish tank's edges—no leaks in six months. Even waterproofed plant pots to prevent root rot. The sleek black finish looks pro-level. Now, whenever there’s a leak, I just grab this trusty can and say, "Problem solved!"

This sealant saved my leaking roof! The 35oz black formula is 3X thicker than others—applied easily with a brush, forming a rubbery waterproof layer. Sealed cracks in concrete and stopped gutter leaks. After 6 months of rain/sun, no peeling or cracking. Professional-grade but DIY-friendly—even covered 120 sq ft with one jar!

The product does not dry white or vibrant white like they describe. The color is an antique white which is more of a dull shade and does not match my white wall tiles. You say the product covers 21 square feet which if you apply multiple coats does not truly cover that area. One coat does not allow for the area to be truly protected. The product truly needs to be cured for 36 hours since any water causes it to fail.

I expected a thick rubber consistency. Instead it was very thin and runny. It takes a long time between applications. Maybe it will work better for you.

This is an excellent product.The tubs are very welled sealed. No risk of spills.waterproof sealant claims to be a versatile and effective waterproofing solution both indoors and outdoors.I highly recommend this product as it’s easy to use and seems to hold up well so far.