Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon

Flex Seal Liquid MAX is a game-changer for sealing and waterproofing projects. The 2.5-gallon size provides great coverage, making it ideal for roofs, basements, RVs, and more. It applies smoothly, dries to a flexible and durable finish, and holds up well against water and UV exposure. Perfect for long-lasting repairs with a strong, watertight seal. A must-have for DIY and professional use!

You’ve seen the commercials. I used this to fill the 3/4” to 1.5” cracks in my asphalt driveway. I’ve used the Black Flex Seal Liquid for as long as ten years to fill the cracks. I never had any fail. I live in a harsh winter area. It’s expensive and you have to come up with your own system as to how to apply. I transfer from the big container to a Pyrex 16oz measuring cup.

I've had a leaky balcony issue for a long time that leaked through to my kitchen ceiling. I used a little can of flex seal for the bad spots and it worked so well that I bought the bigger container and did my entire balcony myself. Didn't leak through all of those bad rain storms we've had lately. This stuff is freaking amazing!!!!!

Works

works good

Product works well but does not state that it would change from black to silver in sunlight and now shows bad patches on the areas used on the rolled tin roof. Very disappointing since we specifically purchased black and went in black! 😡

great product and easily applied with paint brush like i did...had a leak on a slight pitched shingle roof that i couldn't locate...after three buckets guess what...no more leaks(yeah) ! great product

THICK RUBBERIZED LIQUID YOU CAN BRUSH, ROLL, DIP AND POUR Seals out air, water and moisture and is mildew, chemical and UV resistant. Available in black, white, clear, and gray. • Concrete and asphalt repair • Foundation repair • Prevent basement seepage • Weatherize and seal out moisture • Home and roof repair • RV and motorhome weatherizing and repair • Pools and pool equipment • Outdoor ponds and bird baths and much more! Works on: Concrete, glass, brick, stucco, masonry, wood, copper, plastic, tile, fabrics, wires, vinyl, fiberglass, ceramic, porcelain, metal, aluminum, natural stones, foam, asphalt, EIFS, TPO, PVC, EPDM, CSPE, Hypalon polyurethanes and more. Coverage will vary depending on the number of coats used and what type of surface you are applying Flex Seal Liquid onto. However, our available sizes typically cover the following area:1 Large 16oz – up to 18.75 sq. ft.,1 Jumbo 32oz – up to 37.5 sq. ft.,1 Giant Gallon – up to 150 sq. ft.2.5 Gal MAX Size – up to 375 sq. ft.