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Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2

Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2

4.3· 1,900 ratings

Best price now

$103.43at GoodEarth ProductsObserved at 7:07 PM

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Our take on the Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2

Flex Seal is a liquid rubber coating you brush, roll or pour on to seal leaks, coat roofs, gutters and foundations. This is a case of two 8 lb cans in white. The best new price is $24.93 at eBay as of November 4, 2026, which is low for a two-can case.

Best forRoof and gutter leak repairSealing foundations and concrete cracksCoating outdoor surfaces that need a white finishBuyers who want a bulk two-can supply
Pros
  • Thick rubber coating that fills gaps and cracks
  • White color suits roofs and light surfaces
  • Case of two 8 lb cans covers more area per purchase
  • Works on metal, wood, concrete and masonry
Cons
  • White shows dirt and weathering
  • Needs several coats and long cure time
  • Strong solvent smell while wet
  • Not a structural repair for large damage

Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2 prices at every store

  • GoodEarth ProductsNew

    In stock

    $103.43Observed at 7:07 PM
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Also available at

  • eBayCheck price at eBay

Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2 price history

Lowest price we've seen: $103.43 on Nov 5 at GoodEarth Products. Tracked across 1 store since Nov 5.

What reviewers say

Owners rate it 4.3 out of 5 across about 1,900 ratings. Most praise how well it seals leaks and how easy it is to apply. Some complain about the smell, drying time and messy cleanup.

Pros
  • Seals leaks and cracks well
  • Easy to brush or roll on
  • Holds up outdoors
Cons
  • Strong odor
  • Slow to cure
  • Messy to apply and clean up

Specifications

Type
Surface Coating
Formula
Rubber
Color
White

Questions and answers

Is Flex Seal worth it for roof leaks?
Yes for small leaks, seams and flashing. For large holes or structural damage, use proper roofing repair first.
How much area does a case of two 8 lb cans cover?
Coverage depends on surface and thickness. Plan on roughly 25 to 35 square feet per can at a thin coat, and expect to need two coats.
Can I use it indoors?
It can be used indoors, but the solvent smell is strong. Apply with ventilation and let it cure fully before occupying the space.
Does it work on wet surfaces?
It adheres best to clean, dry surfaces. For active leaks, stop the water first or use a product made for wet application.
When is the price lowest?
The $24.93 eBay price as of November 4, 2026 is already low for a two-can case. Watch for seasonal sales on roofing products in spring and fall.
Where is the Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2 cheapest?
At GoodEarth Products, for $103.43, as of our latest check.
What do buyers say about the Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2?
Rated 4.3 out of 5 from 1,900 ratings.
Where can I buy the Flex Seal Sealant, 8 lb, White, Synthetic Rubber, Case of 2?
2 stores we checked sell it, including GoodEarth Products, eBay.

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