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Gardner-Gibson Leak Stopper Rubberized Roof Patch, 1 gal

SKU: 341424099
Gardner-Gibson Leak Stopper Rubberized Roof Patch, 1 gal
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Product Rating is 5.0


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Item Information

Gardner-Gibson Leak Stopper Rubberized Roof Patch is a revolutionary advancement in roof patching and repair. This long lasting rubberized repair is specially formulated to penetrate deep into damaged areas and stop roof leaks instantly! The secret is Penetrex, a unique penetrating oil that reaches deep into the crack and forms a complete seal. With the addition of liquid rubber, this flexible, high performance plastic cement provides a superior watertight bond that will stop problem leaks for good.

  • 1 gallon
  • Covers approximately 12 sq. ft. per gallon when applied 1/8 in. thick.
  • Can
  • Black
  • Limited warranty

Specification Description
Brand: Gardner-Gibson
Coverage: 12 - sq. ft. x 1/8 in. thick
Indoor/Outdoor: Outdoor
Package Size: 1 gal.
Warranty: 10-Year Limited
Package Quantity: 1
Manufacturer Part Number 0311-GA
Gardner-Gibson Leak Stopper Rubberized Roof Patch, 1 gal is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from Leak Stoper Good product and the price was right. Ordered online and picked up in store.
Date published: 2019-10-09
Rated 5 out of 5 by from Works as promised, very happy customer I purchased the Leak Stopper to patch the roof of my 5th wheel trailer. I applied it after a heavy rain, the roof was still wet, and it sealed the holes without any issues. It has held up since then, my roof no longer leaks. I will be purchasing more of the Leak Stopper, after the rainy season, to seal the entire roof.
Date published: 2019-03-14
Rated 5 out of 5 by from Awesome stuff! Used this to seal the seams and leaks on the roof of our aluminum camper. Two horrendous rain storms later and it's bone dry inside. Can't speak for how well it will hold up over time from exposure to the elements, but I still have 3/4 of the gallon left to fix any shrinkage or cracks. Super easy to apply, but be warned it's messy and doesn't wash off of skin...
Date published: 2016-04-28
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what colors does it come in?

Asked by: 2harry3
Thanks for your question. Leak Stopper is available in black in both the 1 gallon bucket and 10oz tube. Rubber Flexx clear is available in a 10oz tube. Due to the limited information we have on your project, please read the Technical Data Sheet (TDS) for further product information, proper prep and application instructions. You'll find the TDS and helpful how-to videos on the individual product page of We take great pride in helping you achieve a successful project so please feel free to visit the Contact Us page of our site should you have additional questions. All the best with your repair!
Answered by: GardnerGibson
Date published: 2019-10-24

Is this good for rv roofs?

Asked by: Preacher Bull
If it is best to use the Black Jack Silicone patch for that application.
Answered by: GardnerGibson
Date published: 2018-06-13

Can you use this product on metal roofs?

Asked by: Brenz
Thanks for your quesiton Brenz. You can use Leak Stopper on a metal roof. For prepation and application information, check out the Technical Data Sheet (TDS) on the product page of our website at
Answered by: GardnerGibson
Date published: 2019-09-16

How do you apply with brush or roller?

Asked by: Peppier
Apply with a trowel.
Answered by: GardnerGibson
Date published: 2019-09-15

How long does this product need to curr before coating with Gardner flexx seal coating?

Asked by: Goseegus
Wait at least a week, you may have some "bleed through staining" but that should not affect the repair. If you have not installed the Leal Stopper Rubberized Patch, do not. Instead use the Flexx Seal Liquid Coating for the repair, as it will work much better.
Answered by: GardnerGibson
Date published: 2019-09-10
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