Leak Stopper 1 Gallon Black Rubberized Roof Patch for Roof Patching and Repair
Leak Stopper 1 Gallon Black Rubberized Roof Patch for Roof Patching and Repair
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Leak Stopper 1 Gallon Black Rubberized Roof Patch for Roof Patching and Repair

4.5 stars out of 428 reviews
(4.5)|
428 ratings

Key item features

  • Revolutionary Patch: A major advancement in roof patching and repair, Gardner-Gibson Leak Stopper Roof Patch penetrates deep to help you stop leaks instantly.
  • Superior Formulation: Featuring Penetrex, a unique penetrating oil, and liquid rubber, this roofing patch reaches deep into cracks to form a complete, watertight seal.
  • Long-Lasting Repair: This rubberized roof patch is resistant to cracking and lasts 2-3 times longer than other roof cements, making it ideal for various roof types.
  • Easy Application: Use a trowel to spread Leak Stopper across the damaged surface, embed reinforcing fabric after the first layer, and apply a second layer on top of the fabric.
  • Versatile Use: Suitable for shingles, built-up roofs, SBS modified roofs, metal roofs, and many other surfaces, providing a flexible, high-performance plastic cement bond.
  • Year-Round Use: Formulated to be used year-round, best applied when surface temperatures are between 50 and 120 F, with special storage instructions for colder weather.
  • VOC Compliance: The product has a VOC content of less than 250 g/L, ensuring it meets environmental standards.
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Current price is Now $20.94
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was $26.93
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About this item

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Customer ratings & reviews

4.5 out of 5 stars
stars428 ratings133 reviews
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Reviews summary

Pros
  • : Offers a cost similar to others in its class.
  • : Forms a barrier to prevent water entry.
  • : Forms a tight seal to prevent liquid escape.
Neutral
  • : Can be smooth, but may require additional tools due to varying consistency.
Cons
  • : Ceiling fails to prevent water entry during rainfall.
  • : Requires extra effort to scoop and apply from the bucket.
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Showing 1-3 of 133 reviews

Dec 3, 2025
Pete
Item details
Color: Black
Size: 1 gal
5 out of 5 stars review

Verified Purchase

Good %26 Thick as should be

Works good, it applies nicely no dripping. It does let you correct over layers. Outside layer dries in about 24 hours or a bit more but softer inside. This would be in our location of temperatures in the 90-105 degrees. Always use gloves with this stuff. We always use WD40 %26 shop towels for the aftermath, hands cleans quick with a few rubs. We used it to repair the black felt and to patch some roof tins..

Helpful?775CQF07ZPVT23332878
Oct 25, 2025
Eric
Item details
Color: Black
Size: 1 gal
5 out of 5 stars review

Verified Purchase

Ease of use is a little incorrect. It's sticky. But it's supposed to be. It's a sticky rubbery mess. Be sure to buy plastic gloves. Or get vegetables oil to help remove this stuff from any exposed skin that this stuff sticks too. But as far as a product for specific roof repair. Seems to work so far.

Helpful?775CQF07ZPVT23332878
Dec 10, 2025
Skip
Item details
Color: Black
Size: 1 gal
5 out of 5 stars review

Verified Purchase

Good Stuff

I used the "Other" stuff as seen on TV. That stuff would only work 6-12 months before the leak came back. My metal roof panels meet in a valley and this roof patch has been going strong over a year now, easy to spread. I can see this roof patch lasting years.

Helpful?775CQF07ZPVT23332878

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