Liquid Rubber Concrete Foundation and Basement Sealant - Indoor & Outdoor Waterproof Coating, Easy to Apply, Black, 5 Gallon

I live in a 100 year old house and had experienced flooding in a ground level room. Apparently this had been going on for some time but previous owners didn't mention it. After getting quotes of up to $12k to excavate and repair the foundation (below grade) I decided to give it a try. After researching the internet I found this sealant and purchased the 5 gallon size. Next step was to excavate 25 ft long, about 18 inches deep, around where I thought the leak was occurring. I found several cracks and deteriorated concrete that I patched. Last step was to apply 4 coats of the foundation sealant using a concrete brush. Instructions say you can roll it on but it just seemed too thick so I went with the brush. My coats were probably thinner than what the instructions recommended but it looked really thick when I was applying it. Each coat dried in about 24 hours. You can tell when it's cured by the color change and it being dry to the touch. After the 4 coats, I back-filled the trench and waited for the rain. It's been 4 months and we've had several heavy rains with no leaks. So I'm calling it a success at this time. I ended up spending about $250 in materials so I'm glad I didn't contract this out. Maybe 30 man-hours to trench, patch, coat, and back-fill. I'm in my 60's so others may be quicker. Some noteworthy comments: I only used a couple of gallons when I had estimated I needed almost 4. Maybe my coats were thinner than they should be but appears to have been effective regardless; I used concrete brushes at about $10 a brush. I tried to clean the first one but this stuff is like a thick tar and wasn't worth the effort. I hate to put unnecessary stuff in the landfill but cleaning was just too difficult. I've got another area I may address similarly so I'm hoping the sealant will last a while after opening. Will probably be Fall project. Overall, a very good product, easy to apply and work with, and appears to have addressed my leak issues.

I like this product!! , I brushed it on as thick as i could, used the paint brush and scooped it out then put it on as thick as I could without causing runs. That said.... Im still going to put on blueskin membrane, I don’t think this is a substitute but a good base and instead of the recommended primer. it would need multiple coats like the can tells you to ensure its sealed if this is your only source, I don’t have time for that. There is a lot of small air bubbles but might be because of the thick coat ...i’m not worried because like I said I will also use the membrane. This was enjoyable to apply and all I could think of was chocolate pudding, It goes on brown then dries black, its has the thickness of pudding or mayo, and covers extremely well ! was a good price compared to other options and used aprx half the pail to do aprx 200sq ft, and its a THICK single coat, multi coats are recommended. I will definitely buy this again and from the same supplier. I received it extremely fast ! I think it was 2 days. I tried to roll it and it works fine but too thin for my liking and would recommend fluffy roller because the pits in concrete would not fill in. As for spray application I don’t see how that happening... It also dries nicely and quick enough ! I din’t notice any odour either . I’m looking forward to having another project I can use the rest on, and buying another pail is highly likely! So depends on your project I would say Try this out,

A superior product. Goes on easily and drys fast. It cures into a rubber-tar based coat. I advise 2 coats. On corners, use the gause for added strength. This product was like painting Bitumen on the walls. Underground, this will last a hundred years and there's no way water will pass through a properly prepped wall! Color is black and fills voids, although a parge and repair should be used first then some gauze if theres a structural repare thats called for. When I purchased this, it was quite expensive. The price has come down since my purchase thus making it a better deal. Btw, thise using Blackjack, blackjack isn't in the same league! Wish I took some pics or did a video, just take my word on it as this was far from my first rodeo.

Easy to apply, it has consistency of yogurt, so it goes on a vertical surface such as a basement wall no issues at all. I applied three coats over top of 40 year old damp proofing, no problem. Sticks to anything really well. NOT a tar based product, dried much faster than tar and I did not find the odor particularly strong. Barely tacky within a few hours, I let it try a few days because I was applying rigid foam over top of the liquid rubber, on the exterior of a foundation wall. But you could probably get away with applying rigid foam over top after 24 hours, if that's your application. As a test, I applied some liquid rubber directly to some scrap expanded polystyrene and it did not seem to react. But I would still avoid contact with non cured product just be be safe.

Great stuff i put this down on my bk yard as the dogs were getn burns off layn on the concrete for so long on there legs, this has worked a treat nice coat over the concrete now an looks great 👍🏽 would definitely buy this again!!!