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.

This stuff is incredible. Jet black, super thick, but easy to brush or roll on my cement walls to help limit moisture intrusion. I am extremely pleased with this product and would not hesitate to purchase it again. Only issue I have, is the calculations for how much you need - it seems to be very out of whack to me. I sealed only 2 of my basement walls and according to their calculations I needed 2 full buckets. Well, I put 2 coats on EXTREMELY THICK, and I never even touched the 2nd bucket ! This stuff works and goes a real long way, trust me.

This Sealer is fantastic---easy to apply with a brush or roller, NO LINGERING ODORS; no question it is a rubber base; dries 100% in 2 days [depending on temperature of course]. The concrete sub-floor in my crawl space was poorly done by a contractor. Two corners were not completely filled with concrete which caused leaks in the Spring thaw for the last two years. As well all the side corners were not properly sealed. So I have had flooding for the last 2 years come April thaw. So after finishing some concrete work in two corners etc. I applied 3 heavy coats all around the corners in the sub-floor. I am so happy, no more leaks. So if you have water problem in your crawl space, buy this product, you will be glad you did. There is another sealer that I bought at Rona used in sealing concrete. I used this for sealing the floor---and it did very nicely. The big problem with this sealer was it is petroleum based, so the odor from this was horrible. The smell lasted for 4 days and is still not 100% dry after 2 weeks. It probably would be okay if you did this in the heat of the summer where it would dry faster. I think this product is best used outside.

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.

Did a great job, easy to use, and I saved so much money on heating .