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18 oz. LEAK STOPPER RUBBER-FLEXX Sealant (Black)

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  • Rubberized sealant formulation fixes cracks instantly
  • Ideal for sealing leaks in metal roofs, chimneys, pipes, and more
  • Spray application ensures mess-free use
  • See More Details
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Product Overview

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. With the addition of liquid rubber, this flexible, high performance sealant provides a superior watertight bond that will stop problem leaks for good. Rubber Flexx is ideal for a variety of roof surfaces including shingles, metal roofs, chimneys, skylights, gutters, pipes and many other surfaces.
  • Stops leaks
  • Seals and protects
  • Easy spray application
  • Flexible
  • Paintable
  • Crack resistant
  • Protects against rust and corrosion
  • California residents

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
2.6
Product Height (in.)
9.5
Product Size (oz.)
18
Product Width (in.)
2.6

Details

Application Method
Spray On
Coating Base
Asphalt
Cold Applied
Cold Applied
Color Family
Black
Color/Finish
Black
Features
High Wind Resistant
Roof Repair Type
Roof Sealant
Roofing Product Type
Sealant

Warranty / Certifications

Manufacturer Warranty
10 Years

Questions & Answers

35Questions29Answers

1. Which adhesive provide better paching/bonding between Gardner 18 oz. LEAK STOPPER RUBBER-FLEXX...

Asked by Thomas December 18, 2020
2
Answers

With no experience directly with the second material you mentioned, i could say that the speay marerial is very easy to apply and it flows fairly well filling in cracks and gaps.

Can it be used to stop leaky fish aquarium?

Asked by Gmcg November 26, 2020
5
Answers

No

can I use this product to seal around a vent pipe roof penetration that leaks when it rains?

Asked by Leroy September 26, 2020
4
Answers

yes, it works real well for that

I have a water leak on a swimming pool skimmer, can I spray this over the leak or is there anothe...

Asked by John September 7, 2020
2
Answers

I think you can try it.

Can it be easily removed from skin?

Asked by bonzo August 18, 2020
3
Answers

no once it dries on your skin it hard to clean, try using rubber gloves when applying

I have a small pond with a leak somewhere on the black plastic liner - I can't find the leak. Ca...

Asked by Frustrated June 25, 2020
2
Answers

I would say yes

cracked furnace evap coil pan cracked

Asked by Jim June 7, 2020
2
Answers

I did use in my shingle on roof that did not work as it say in the can

Can it be used over silicone sealant / calking?

Asked by MostlyThumbs June 5, 2020
2
Answers

yes it will adhere to dry silicone caulking

dose it work on gutter will it stop leaking gutters

Asked by par June 3, 2020
3
Answers

Yes it should properly seal a leaking gutter - I assume your leak is at or near a connection? The product is black and messy so be careful when spraying it and only use it in the inside of the gutter as any product on the outside will make your gutter look very ugly.

Will it stop air leaks on heavy plastic

Asked by Wolfb8 April 24, 2020
4
Answers

depending on many things, i t would work on sealing heavy plastic. but you should use several coats not just one coat.

18 oz. LEAK STOPPER RUBBER-FLEXX Sealant (Black) - page 2

Customer Reviews

  • 4
    out of 204 reviews
  • 80% recommend this product
Filter by:
Showing 1-10 of 204 reviews
I was hoping to use this on another project, but needed to use it to coat the Leak stopper rubber...
I was hoping to use this on another project, but needed to use it to coat the Leak stopper rubber roll sealant. Together they have worked to seal the area that was leaking. The spray seems to be the ideal option for applications that are or would be hard to seal with a patch.
by GoodSam
Excellent water tight seal. Need something to keep out the elements? This will do the job. Filled...
Excellent water tight seal. Need something to keep out the elements? This will do the job. Filled in gaps, crevices, and applied easily. Will purchase again.
by Kevin37
Response from GardnerGibsonSep 30, 2019
Thanks for your 5 STAR feedback. We're glad that you're happy with the results! Our managers and owners love to hear from customers and we appreciate you taking time to rate our product. Please keep us in mind as our company has many other quality products you may want to consider for future projects. Check us out at www.Gardner-Gibson.com for more info. Thanks again for choosing Gardner and congratulations on completing your repair! GardnerGibson
1 person found this helpful
by HomeDepotCustomer
Did what it was supposed to do...
Did what it was supposed to do
by DYI
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Seems to have worked. Lot of spray in the can. Was able to spray on heavily to treat area where...
Seems to have worked. Lot of spray in the can. Was able to spray on heavily to treat area where leak from roof.
by wantgoodservice
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Does not seal properly it's like a pint...
Does not seal properly it's like a pint
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 204 reviews