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

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!!!!!

Performs exactly as advertised. The surface is smooth once dried. I used it to coat the outside cinder blocks for planters in a pond and to waterproof the waterfall. Also applied to the area where the liner was covered by brick and mortar. It made a smooth transition and looks good. I will definitely purchase again.

works good

Works

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.