Liquid Rubber Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Gallon

Description:

About this item:

  • PROTECTIVE FINISH FOR - Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, sheds, basements, metal, wood, concrete and more
  • HIGHLY FLEXIBLE & DURABLE - Final membrane has over 1000% elongation preventing adhesion failure, and is UV Stable stopping the sun from degrading the product
  • COVERAGE - Vertical Surfaces - 1 gallon/30 sq ft (2.8 sq m). 3-4 heavy coats to achieve a 30 mil (0.76 mm) membrane. Flat/Ponding Surfaces - 1 gallon/15 sq ft (1.4 sq m). 4-5 heavy coats to achieve a 60-80 mil (1.5-2 mm) membrane
  • ENVIRONMENTALLY FRIENDLY - Liquid Rubber Waterproof Sealant is water based, containing no solvents, VOC's or harmful odors. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus
  • FOR A BULLETPROOF SYSTEM - Bridge joints, seams, vents, gaps, protrusions…. With Liquid Rubber Seam Tape or Liquid Rubber Geo-Textile where possible movement may occur
  • Review:

    4.5 out of 5

    89.23% of customers are satisfied

    5.0 out of 5 stars Amazing product that actually works!!

    S.K. · August 23, 2024

    We have tried nearly every type of roof caulking out there. The Texas summers on a metal roof are brutal. This and the paint are the only thing that have held up. They flex and still seal where 2 pieces of metal contact where we have had a roof leak for years... no more leak. It set solid in 48 hours. Application was really easy and forgiving. We put on 3 layers of the paint on the tape just to be safe which surprisingly didn't take very much to do. No running or bubbling found. Even after 120 degree Texas days making the roof well over 150... and it still held. No cracking, running.. nothing. It is our go to now. Well worth the money and the only roof sealant that still seems to work. Mineral oil to clean the brush, easy to apply - just like a thick paint. Dries in 24-48 hours. 3 layers with the tape was enough to handle 7 inches of rain in 3 hours no leaks this spring. Thank you for making this and please keep selling it!

    5.0 out of 5 stars Easy to use and WORKS!!!

    R.R. · November 16, 2024

    I used it to seal my roof, and after a few heavy rains, there’s no sign of leakage. What I love most is how well it holds up over time — no cracking or peeling. It’s an excellent solution for any waterproofing needs, and I highly recommend it for anyone tackling outdoor or home maintenance projects. Great value for the price!

    4.0 out of 5 stars Works and cheaper than competitors

    G.W. · October 23, 2024

    Easier to open and seems to spread fine and seal. Only complaint, it's listed as black but looks dark brown. Last gorilla seal I got was half solidified. Flexseal prices keep creeping up.

    5.0 out of 5 stars Fantastic stuff!

    B. · January 25, 2025

    We used this on our wood enclosed trailer. It worked great with one coat and we have no leaks.

    5.0 out of 5 stars Extremely effective.

    J. · July 26, 2024

    Used this product on a 10-year-old asphalt shingle roof valley which had begun to develop leaks. The shingles were not adequately overlapped, and the sparsely applied black sealant had become brittle and cracked. This Liquid Rubber went on easily and will apparently remain flexible. I applied the recommended three coats, but without the company's seam tape due to visibility concerns. No leaks after several hard downpours.

    5.0 out of 5 stars Great

    E. · May 5, 2024

    We replaced to treat wood decks in Florida that had rotted from moisture. We coated all of the deck joists with Liquid Rubber and this stuff is awesome. It applies easily but wear rubber gloves and some throw away coveralls because it does not come off clothes. Nor will termites and moisture ruin your deck. Will definitely buy again if needed. Price was competitive too.

    5.0 out of 5 stars A+

    M.H. · December 8, 2024

    Takes a Minute to dry but it works great. Can be messy so I advise using it with a brush straight from the bucket...

    1.0 out of 5 stars ... start out by saying the company's customer service is amazing. There is a toll free number on the ...

    M. · October 16, 2017

    I wanted to start out by saying the company's customer service is amazing. There is a toll free number on the back of the bucket and someone answered my questions. We asked them about the dry time after 3 days of waiting for this stuff to get less sticky and they were very nice.We were painting this on a concrete/cement flooring. We live in FL and there is moisture in the soil. Our villa was built about 30 years ago and moisture was seeping up through the foundation. We had to rip out the flooring that was put down just 2 years ago (right before we moved in) because black mold was growing on the cork sub floor. (Not our choice to put down a cork sub floor on a foundation that had moisture but the previous owners clearly didn't know about the moisture issues).So, we starting rolling it in the main areas and painting it with a brush in the corners/sides. The stuff is very thick.However, a few days later it was still very tacky. Tacky to the point we couldn't walk on it. Every time we tried we would get stuck in place. It was pretty funny. We had tilers waiting for this stuff to "dry/cure" before the walked on it. I called the company on day 3 and they suggested to use talc powder or lay down plastic. Our tilers said plastic wasn't a good idea.On day 4 after we applied it they gave up trying to wait until it hardened and started laying tile. They said they ruined their knee pads and it was hard to walk on. We also noticed it was ripping. Wherever they would kneel, move tile, use their rolling cart, etc, it would leave holes. We had hundreds of holes throughout the waterproofing. I wanted to cry. It took us a while to apply and we lost time waiting for the stuff to dry (which it never did).We told them they would have to wait until we applied a second coat. We waited another 2 days and they came back. It did the same thing. Holes everywhere. We wasted about a week in time.Does it work? Maybe, but there is no way for us to tell since they laid thin set on top of it and it had so many holes. I cannot stress how shredded this sealant was. We wasted $150 and hours of time applying and waiting for it to dry. The tilers also were not thrilled with us at all.They told us to buy another product which the local Home Depot had. It is ever so slightly more but it was a dream to apply and, after days of tilers walking on it, hasn't made a single hole.I would not recommend this product to a single person. I wish we hadn't bought it. This would get negative stars if that was an option. I usually don't leave bad reviews but this was that horrible. Sorry Liquid Rubber.

    Fantastic Product!

    N. · October 8, 2024

    We got this product to coat our old steel roof at the back of our house. The Liquid Rubber was easy to work with and covered very well. This is the 2nd pail I've ordered because there's another project that needs doing before the weather turns cold.**The only issue I would express is how Bolo ships it. This product is heavy and therefore should not be put in a flimsy box that's too big and has no packing to steady it - completely unfair to the delivery people who could get very hurt this way!!

    Product curing time

    D.H. · May 26, 2023

    The curing time for this product was not good and delayed the time it took to apply a second coat, we have not applied the third coat yet.

    This works and conservatory leaks no longer!

    K. · October 31, 2024

    Bought with the geo-textile membrane and both really worked! The conservatory adjoining my bungalow had always leaked at both ends of the guttering and repair by a professional hadn't solved the problem. I thought I'd have a go when I came across this product at the end of August. I applied two coats, 24 hrs apart, and would have applied a third, but the weather changed and we had a deluge. Result: absolutely no leaking and a wonderfully dry conservatory - I couldn't believe it! Now November and still dry. NB: This stuff is easy to apply by a complete amateur (me!), but you need to be really thorough and seal absolutely every possible angle where the water might get through, laying the geo-textile membrane right up to the edge of the guttering, as huge amounts of water come off the roof. Can't rate this stuff highly enough!!

    Good

    W. · June 23, 2024

    Very good, but overpriced with shipping etc!

    It worked

    C.C.G. · November 28, 2021

    It kept out the rain

    Liquid Rubber Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Gallon

    4.4

    BHD54157

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    Return and refund policies

    Product origin: United States

    Electrical items shipped from the US are by default considered to be 120v, unless stated otherwise in the product description. Contact Bolo support for voltage information of specific products. A step-up transformer is required to convert from 120v to 240v. All heating electrical items of 120v will be automatically cancelled.

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