• Start with a clean dry surface, free of oil, grease and dirt. • Stir can well, do not shake. • BRUSH, ROLL, DIP or POUR directly onto surface. • Coat entire surface until all cracks or holes are completely filled. • Always cover open containers during and after use. • Allow each coat to completely dry before applying additional coats. • Dry time depends on temperature and humidity. • Allow 24-48 hours for product to fully cure if product is brushed, rolled or dipped. If product is poured, dry time may be significantly longer depending on thickness.
A: You can clean uncured Flex Seal Liquid® with a dry cloth or paper towel and mineral spirits. To remove fully cured Flex Seal Liquid® from a surface may require peeling, scrapping or sanding and could result in damage to the underlying surface.
DO NOT USE water or alcohol based solvents.
A: The maximum pressure Flex Seal Liquid® can withstand will vary based on the substrate and the conditions under which it is applied. It’s always best to test a small area first. Please note, it is not meant to be used in high pressure applications, such as engines or pressurized pipes.
A: If the can remains open for an extended period of time a skin may form on the surface. In order to avoid skinning over, remove lid, use immediately and always replace the lid after each use. If skinning occurs remove the top layer and use product.
A: Flex Seal Liquid® has a shelf life of 24 months when properly stored. If the can remains open for an extended period of time, a skin may form on the surface. In order to avoid skinning over, remove lid, use immediately and always replace the lid after each use. If skinning occurs, remove the top layer prior to using Flex Seal Liquid®.
A: FLEX SEAL® LIQUID can be used on most surfaces and the applications are endless.
Excellent For: Concrete, glass, brick, stucco, masonry, wood, copper, plastic, tile, fabrics, wires, vinyl, fiberglass, ceramic, porcelain, metal, aluminum, and natural stones, foam, asphalt, EIFS, TPO, PVC, EPDM, CSPE, Hypalon polyurethanes and so much more!
A: Flex Seal Liquid® cures faster in hot summer months and slower in cold winter months. Depending on thickness of application, temperature and humidity, Flex Seal Liquid® will dry to the touch in 6 to 12 hours and fully cure in 24 to 48 hours. If the treated area is wet or very soft, it will need more time to cure.
A: Stir can well and wear protective clothing. Make sure the surface is clean, dry and free of grease, oil and dirt. For better adhesion, you can etch the surface with sand paper or steel wool. Make sure all cracks and holes have been completely filled and Flex Seal Liquid® is completely dry before testing product. If you do not intend to use all the product at once, it may be a good idea to pour some out into another container and reseal the original Flex Seal Liquid® can.
To brush or roll: We recommend applying Flex Seal Liquid® in thin even coats. Apply several even coats until the surface has been completely covered and all cracks and holes have been filled, allowing up to 24 hours for each coat to dry. Flex Seal Liquid® needs 24-48 hours to fully cure. If the leak persist, apply additional coats. Always brush or roll over a larger area than just where the leak occurred.
To dip: Put object directly into Flex Seal Liquid® making a slight swirling motion. Once you feel surface has been coated, remove and let any excess drip back into the can. Hang or clip the object in the same vertical position as it came out of the can and let dry. Once Flex Seal Liquid® is fully cured you will have a super strong, waterproof, rubberized coating on the surface.
To pour: You can also pour Flex Seal Liquid®, applying it directly on the surface to allow it to fill into cracks, holes and hard to reach areas. Continue to pour until the surface has been covered and all cracks and holes have been completely filled.
A: Coverage will vary depending on number of coats used and what type of substrate you are applying Flex Seal Liquid® to. However, here are the expected amounts:
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.