Flex Seal 14 oz blue can shown for quick leak sealing.
Flex Seal spray-on crack sealing in action to stop water.
Flex Seal applied to a wet surface forms a waterproof barrier.
Flex Seal cured rubber coating on wood remains flexible.
Flex Seal used on gutters to waterproof and prevent leaks.
Flex Seal roof sealant application provides leak protection.
Flex Seal on an RV exterior offers weatherproofing.
Flex Seal around a skylight seals drips and moisture.
Flex Seal around windows provides flexible protection.

Flex Seal

Flex Seal 14 oz 2-Pack — Blue Waterproof Rubber Sealant Spray for Gutters, Roofs & More

High-performance tools and home improvement made for confident daily results

$42.37

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Why customers choose TaskHolt Tools

Experience a versatile, spray-on solution from Flex Seal that stops leaks and protects surfaces with a flexible rubberized coating. The blue 14 oz cans come in a convenient 2-pack, delivering fast results you can apply to both wet and dry areas. Once dry, the coating can be painted any color to blend with your project.

Why choose Flex Seal

The formula seeps into cracks and holes, forming a watertight film that stays pliable for years. It works on wet or dry surfaces, making it handy for urgent repairs and routine maintenance alike.

  • Dries to a watertight, flexible coating that resists cracking and peeling
  • Remains pliable in heat and cold, accommodating seasonal changes
  • Paintable after curing, so you can match any color

Where it shines

From gutters and roofs to RVs, campers, skylights and windows, Flex Seal provides a protective layer that helps block moisture, corrosion, and wind driven moisture.

  • Gutters: seal seams and prevent leaks during rain
  • Wood and metal surfaces: create a water barrier without sagging
  • Roofs and skylights: quick, durable patches for difficult spots

In crafting and DIY projects, this spray-on sealant transforms fragile joints and tiny gaps into durable, water-resistant finishes. It is designed to work on both wet and dry surfaces, making it a go-to for quick fixes and long-term protection.

How to use

  • Shake well before use and test on a small area
  • Spray evenly over cracks, seams, and surfaces from a comfortable distance
  • Allow to dry fully; finish with paint if desired

Important notes

Results depend on surface prep and conditions. Follow safety guidelines and allow adequate drying time between coats for best results.

FAQ

Q: What surfaces can Flex Seal 14 oz 2-pack seal?

A: Suitable for wet or dry surfaces, including gutters, wood, roofs, skylights, and windows.

Q: Can Flex Seal be painted after it dries?

A: Yes, once cured, you can paint it to match your project.

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