IT’S LIKE THE HOOVER DAM IN A CAN®
FLEX SEAL® Colors are available in 12 different color options, in a 14 oz aerosol can.
Get more value with our new larger 17 oz Flex Seal MAX size.
*Review count based on 5 star amazon.com reviews, collected between May 2020 and May 2021.
Read entire can. Wear face and eye protection, protective gloves, and clothing. Make sure the surface is clean, dry, and free of grease, oil, and dirt. Shake well. Spray 8” to 12” from surface, using an even, sweeping motion. Apply multiple, even coats until ALL cracks and holes have been filled.
IMPORTANT: Allow 24 to 48 hours to dry before applying another coat.
Let it dry completely. (It usually takes up to 24 to 48 hours to fully cure.)
*Use Flex Seal ONLY in a well-ventilated area. When using inside, prevent vapor build-up by opening doors and windows. Ensure fresh air entry during application and drying.
*Do not use near heat, sparks, pilot lights or other sources of ignition.
Spray a larger area than area where the leak is and feather the edges. For best results, apply multiple coats rather than one thick coat and use at can temperatures above 60ºF.
Make sure Flex Seal has filled ALL cracks and holes and is FULLY CURED before testing product. If light can pass through, apply additional coats.
Now get more to seal, patch and repair. The Flex Seal Products MAX Line is here with larger containers of our Flex Seal Products. Got a big job? Well, Flex Seal has some big solutions for you. Get more to do more, for less!
It’s the same great product in a larger size to help tackle larger jobs. Now get Flex Seal Spray in the 17oz MAX size containers. The Flex Seal MAX offers 20% MORE! This is the product that started it all and now you get more of it for less in this new MAX Line size.
Get the incredible Flex Seal Spray MAX Line sold in black, white, and clear and tackle the biggest projects with the ease of Flex Seal Spray.
Dry time depends on the temperature, humidity, and thickness of the coating. Flex Seal will usually dry to the touch within 2 to 3 hours and fully cure in 24 hours. It will get stronger over time.
Depending on the number of coats and thickness, one 14 oz. can will cover up to 12 sq. ft. and one MINI 2 oz. can will cover up to 2 sq. ft.
Flex Seal will withstand normal hydrostatic water pressure such as rainwater, but it is not made to withstand extreme pressure.
Flex Seal can be applied on a wet surface, or moist environment in the event of an emergency. However, it will always adhere better to a clean, dry surface. To ensure its longevity, we recommend you reapply Flex Seal once the area is completely dry.
Depending on the environment, coats added, and maintenance, many people have found Flex Seal will last for years without cracking, peeling or losing any of its strength or sealing properties.
Yes, you can spray the Flex Seal directly into a bowl and paint it, brush it or roll it o any area. However, we recommend using Flex Seal Liquid for these type of applications.
No, we do not recommend that you use Flex Seal on surfaces where it comes in direct contact with drinking water.
No, Flex Seal is not made to withstand extreme heat or pressure.
No, Flex Seal should not be used to seal a gasoline tank, oil tank or any other flammable material.
No, it is not affiliated with GAF and is not intended for use by Professional Roofers.
In order to give Flex Seal Clear its amazing transparency, we had to make some adjustments to our formula. Therefore, the spray will be slightly thinner and multiple coats may be required to get the job done.
No, we do not recommend the use of Flex Seal Spray on vinyl.