Flex Seal Liquid, Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, Black, 1 Gallon

This stuff has provided a 'final solution' for certain outside wood on my home. I live where the seasonal temperature range can be 100F to -40F. This is brutal on even the best, long-lasting outdoor house paint. Every few years I would have to scrape and/or sand cracked or peeling spots and do touch up. Since I first used Flex Seal on critical places (like window frame tops where snow and water sit), I have had NO FURTHER MAINTENANCE. Note that there is conflicting information as to whether you can apply regular paint on top of the Flex Seal (for me, I wanted to knock down the Flex Seal's high gloss finish). So, last year, I painted over some trim that had been painted previously with Flex Seal to test adhesion and durability. All I did to prep the Flex Sealed surface before applying regular house paint was to scrub with a TSP solution. So far, no peeling or cracking has occurred. The only negative I have observed is that the Flex Sealed surfaces attract dust noticeably, almost like it's statically charged. However, the surface cleans up easily with a hose and soft-bristled brush. This stuff yields a truly waterproof barrier that has eliminated the periodic painting I had to do every 2-3 years. The wood trim is sealed and no shrinkage or cracking has occurred. I'm getting older, so the less time I spend on a ladder is fine with me!

I used this to fill cracks in my asphalt driveway previously. It’s expensive but lasted a few years so when more cracks appeared I bought more and filled the new cracks. If the cracks run deep I backfill with sand and pour the Flexseal over the top. It lays out flat on its own and dries within 24 hours in summertime temps.

Terribly expensive and a workout to brush on to a large surface. Verticle surfaces require very thin coats or it will run. That being said I am pleased with the results. I used multiple layers on the roof of a cargo trailer that I built a cover for out of plywood. I use the trailer for fall hunting trips and have had problems with minor water leaks in the past. After using the Flex seal I have what I believe will be a completely waterproof roof and should stay dry this year and in the future. Would give it 5 stars if the price was more affordable !

I purchased this for my Son and he is very pleased with the application a durability of Flex Seal Liquid. Instead of spending $1000 on Rhino Lining his truck again, he used Flex Seal Liquid. He rolled his entire truck bed with it. He put 4 coats on his Chevy Silverado with an 8ft bed. He used 1 and 3/4 gallons to complete the job. It is thick and can handle the hard knocks. The look of it is actually more attractive than Rhino Lining. Update: I also used Flex Seal to repair the interior of my Honda Accord. There are plastic parts inside the car that have deteriorated over time from the heat and sun in Florida. The plastic became tacky and was coming off onto everything that touched it. My hands were constantly getting sticky and it actually ruined a few pieces of my clothing. I taped up the areas surrounding that plastic and applied Flex Seal. It became hard over night and and now those parts actually look better now than they did when the car came from the factory. I must add that the quality of the liquid Flex Seal seems to produce much better results than the spray. I've used the spray on a few items around the house and it does not apply as evenly as they liquid and is no where near as durable as the liquid. This product is absolutely fantastic! There is no doubt in my mind that boat cut in half in the commercial was indeed repaired with Flex Seal. It is the real deal!

The Flex Seal Liquid is definitely better than the Spray Can Product. Read the directions and take your time to apply the product and you will have no issues. It takes usually 24 to 48 hours to completely cure. I permanently fixed a very stubborn roof leak caused by a very incompetent and defective roofing contractor, who did just enough to resolve the problem leak, only to come back in less than year. I did a much better job with this product to finally stop the leak once and for all. This product has been also very useful in resealing a basement water collector system that was professionally installed over 25 years ago. I have used the cheaper rubber sealant products but flex seal appears to have better adhesion and curing finish not mention better longevity. Phil Swift's Product is the real deal!

Second time I've ordered this great product. Just the answer to my leaky roof. But it seems that the company doesn't use the JUST-IN-TIME approach to fulfilling orders. When AMAZON sent an email as to the delivery date as TOMORROW, I was happy to know that Id's be receiving it at long last. But when it didn't come I checked my email agin and it said NOW ARRIVING AT ******** which was a week later. Not blaming AMAZON because its the company that needs to get it's DELIVERY DEPARTMENT in order. I think they should investigate a book called THE TOYOTA WAY. It will be a good guide to reliable shipping practices.

Don’t use for asphalt crack repairs. Product cracks in cold weather. Their claim, “Will not crack or peel in winter cold” is false. Here is my story. I purchase 2 ½ gallons of Flex Seal Liquid in 3 separate shipments to repair cracks in my 3,300 sq. ft. driveway. Broom swept, then power washed all of the cracks to clean out dirt, debris and loose asphalt. Cracks ranged in width from thin to about ½ inch in width. Thoroughly mixed each liquid rubber container using a sturdy paint mixer tool and power drill. Slowly poured the liquid rubber into each crack until filled. About one week later I had the entire driveway seal coated in preparation for winter weather. The entire process was performed in summer temperatures and no rain. Repairs looked great until the temperature dropped to 42 deg F, about 1 ½ month later, then all repairs showed cracking. Spend over $200 and lot of my time only to end up with the all of repairs cracking open. So their advertising claim that it expands and contracts with temperature is false. I would not recommend this product for repairing asphalt driveways.

I have a 15 year old, 16' cargo trailer we take to our job sites. I replaced the skylight and needed a way to seal it properly. Regular silicone didn't do the trick and I considered roofing tar. I found this product and was a bit familiar with it and it's claims to seal. Well I gave it a shot to seal the skylight and it worked great. I then decided to order more and coat the entire roof and patch over the original sealant used when the trailer was built. The roof is galvanized and had a little coating of rust. I lightly sanded the surface to rough it up and applied the Flex Seal. I'm very happy with the results. The original sealant had separated in a few spots around the perimeter and this easily sealed those areas. I used a full gallon plus 2 pints to complete the job. I was pretty liberal with the application. It's thick stuff so it's not like spreading paint. I used a 4" wide paint brush and a disposable 2" brush for the detail areas. WEAR CRAPPY CLOTHES when applying. It seems to get everywhere-and I'm very neat! Disposable rubber gloves are a plus.

The liquid in a can is great for waterproofing outdoors. I have used it on the skylight curbs and gutters on my sunroom. Has not shown any signs of wear or cracking during the past 3 years. Has withstood +40 celsius to minus 37 celsius. The liquid version of this product is better than the spray version.