NEW: FLOOD PROTECTIONFLEX SEAL MERCHCURRENT SPECIALS

Flex Seal®

OVER 5,400 FIVE STAR REVIEWS*

LIQUID RUBBER IN A CAN

Sprays out as a thick liquid, seeps into cracks and holes and dries to a watertight, flexible, rubberized coating that will Stop Leaks Fast®. Once dry, can be painted any color. 

• Roof and gutter repair

• Weatherize your home

• Foundation and concrete waterproofing

• Indoor and outdoor projects

• Seal cracks and holes

• Pools and pool equipment

• RV and motorhome repairs

• Auto and boat repairs

• Bathroom fixes

• Furniture repair and much more

Works on: Wood, metal, tile, concrete, masonry, fabric, glass, plastic, aluminum, porcelain, dry wall, rubber, cement, some vinyls and more.

Bulk Discounts

Orders over $500 - get 5% off

Orders over $2,500 - get 10% off

Orders over $10,000 - get 15% off

Orders over $20,000 - get 20% off

Discount applied at checkout.

Cannot be combined with other offers.

MAX 17 oz
Black
Only
/ea
Flex Seal
No items found.
Description
Directions
Videos
FAQs
Reviews

It's like a
HANDYMAN IN A CAN®

FLEX SEAL® is available in 14 oz or MAX 17 oz sizes.

Available colors include black, white and clear. 

WARNING: California Proposition 65 Notice.

*Review count based on 5 star amazon.com reviews, collected between October 2011 and December 2022, and 5 star Bazaarvoice reviews from our retail partners, collected between July 2013 and December 2022.

DIRECTIONS

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.

FLEX TIPS:

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.