Weatherstrong Advance Hybrid Sealant | Buy Waterproof Sealant | Behr

BEHR® Weatherstrong™ Advanced Hybrid Sealant

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BEHR® WEATHERSTRONG™ Sealant is a high-performance hybrid sealant that provides superior stretch and durability on the most difficult substrates. It can be applied in both wet and dry conditions and can seal active leaks up to 1/4" size. Paint ready in 1 hour.

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Container of Weatherstrong™ Interior/Exterior Advanced Hybrid Sealant



Best For Use In

For Multiple Surfaces


Approximately 55 linear feet with a 3/16" bead

  • Icon for Excellent Adhesion


  • Icon for Weatherproof and Waterproof

    & Waterproof

  • Icon for Exceptional Flexibility


Ideal for expansion and control joints, roofing and flashing applications, as well as sealing joints between most vinyl siding, fiber cement, aluminum, most metals, and other common building materials. Not intended for underwater applications, such as pools, fountains and boats.

Surface Preparation

All surfaces must be clean and free of dust, chalk, oil, grease, wax, polish, mold and mildew stains, rust, loose material and all other foreign substances.

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  • Apply with conventional hand or air-powered caulking equipment in a continuous operation with adequate pressure to fill the joint to the proper width and depth (do not overfill the joint).
  • Apply when air, material and surface temperatures are between 0°F and 140°F.
  • Cut the tip at a 45° angle to desired bead size.
  • Gun caulk into void to provide a solid fill.
  • Use backer rod for gaps larger than 1/2" x 1/2".
  • Smooth the sealant before the skin forms using a dry tool with a concave profile.
  • Do not use water or soapy water for this operation.

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Clean-Up & Disposal

  • Clean tools, equipment and excess uncured material with mineral spirits, solvent or cleaning wipes.
  • For disposal of empty containers, unused product and soiled rags, contact your household refuse collection service.

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Behr Process LLC warrants to you, the original residential consumer purchaser, the performance of this product as described on this label for so long as you reside in your home. THIS WARRANTY IS NOT VALID WHEN THE PRODUCT IS NOT PROPERLY APPLIED TO A PROPERLY PREPARED SURFACE OR CARED FOR IN ACCORDANCE WITH THE LABEL DIRECTIONS. THIS WARRANTY EXCLUDES WATER INTRUSION DUE TO STRUCTURAL DEFECTS AND/OR CAULK AND SEALANT FAILURE. This warranty is not transferable. If this product is found not to perform as specified on the label during the warranty period, Behr Process LLC will, at its option and upon presentation of proof-of-purchase (the original receipt), either furnish an equivalent amount of new product or refund the original purchase price of this product to you. This warranty excludes (1) labor and costs of labor for the application or removal of any product, and (2) any incidental or consequential damages, whether based on breach of express or implied warranty, negligence, strict liability or any other legal theory. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state. To obtain warranty service, call 1-800-854-0133. Behr Process LLC reserves the right to inspect any and all application of the product prior to processing your claim made under this warranty.

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What Product Do I Need?
What sheen do I need?
8 Oz. Sample
1 Gallon
1 Quart
5 Gallon
The following product(s) is required to properly prep uncoated and previously coated concrete surfaces.
Required product
The following product(s) is required to properly prep uncoated and previously coated concrete surfaces. Only available in store at Home Depot.
Required 3rd party product
The 9 in. x 1/4 in. Polyester Adhesive Roller Cover has a hard texture, making it ideal for applying all types of adhesives to smooth surfaces. It can be used for stippling and applying sand paints.
The following product(s) is recommended when a topcoat clear finish is desired.
The Home Depot logoSold Exclusively at The Home Depot