Model # SK-8055

Internet #203856114

Gardner 5-Gal. Sta-Kool 805 Metal-X Metal Roof Coating


5-Gal. Sta-Kool 805 Metal-X Metal Roof Coating

  • Creates reflective, rust-resistant barrier to seal/protect roof
  • Expands with roof movement to avoid cracking and peeling
  • Low-odor, low-VOC formula backed by 10-year limited warranty
$9999 /each

Frequently Bought Together

Product Overview

Sta-Kool 805 Metal-X is a tough, white elastomeric roof coating that is formulated for exceptional bonding strength to metal roof surfaces. This high performance product also contains rust inhibitors, which provide long-term protection to metal surfaces. Metal-X expands and contracts with the roof's movement to resist cracking and peeling. The bright white finish keeps metal roofs cooler by an average of 50 degrees compared to uncoated metal, thus minimizing heat stress associated when metal roofs expand under the hot sun. Metal-X provides a protective barrier that reflects, seals, and protects from the elements. In turn, this provides a longer life to metal surfaces, helps to cool surfaces and will help reduce interior temperatures. This environmentally advanced formula helps reduce energy cooling demand, is low odor, and low VOC, making it a great choice for your metal roof. Covers approximately 50 sq. ft. - 75 sq. ft. per Gal. per coat depending on porosity of the surface.

California residents: see   Proposition 65 information

  • Elastomeric coating
  • Flexes to resist cracking
  • Added rust inhibitors
  • Cools and reduces heat gain
  • Seals and protects
  • Stay-Kleen protective finish
  • Please consider the weather when ordering this product, it may freeze in transit, making the product unusable

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

painting over an old fibered aluminum coating?

I have a turn of the century home in south Florida with a metal roof that was coated with an aluminum fibre coating many, many years ago. It is not peeling, or flaking but rust is starting to bleed through. Is this an ideal product to recoat that?
Asked by: tb69
Thanks for your question. Please check out Gardner Aluma-Seal or Silver Dollar and follow directions regarding preparation, application and treating rust. All the best with your project!
Answered by: GardnerGibson
Date published: 2016-09-08

will it seal leaks on corrugated metal roof

have several leaks tried sealing them seems the whole roof needs to be done as cannot find them.
Asked by: roberto
We recommend using the Gardner Sta-Kool 390 or 440 White Roof Patches. Seal all screw heads with this, and then install the roof coating over entire roof. Metal roofs always leak at the screw holes over time. Good luck with the project and let is know how your job turns out.
Answered by: GardnerGibson
Date published: 2017-06-08

Can you apply over paintable silicone caulk repairs (nail holes)?

Asked by: 234
We do have a patch to use with this, but if you used something else, test a small spot first. It should work, but test first.
Answered by: GardnerGibson
Date published: 2016-06-04


The roof is on a large shop. Looking to use vinegar to kill the rust and pressure wash it then scrub where needed and then wash again. Would like to spray the coating on if possible to make the day go faster. Figure I could spray 2 or more coats in a few days faster than rolling, and get a better coverage.
Asked by: Anonymous
Yes, you can airless spray the product in a 10”-12”pattern, 2000 psi with a .021 to .025 spray tip.
Answered by: CommunityAnswer
Date published: 2016-02-13
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Customer Reviews

5-Gal. Sta-Kool 805 Metal-X Metal Roof Coating is rated 4.6 out of 5 by 18.
Rated 5 out of 5 by from Easy to apply. Obtained expected coverage. How will it... Easy to apply. Obtained expected coverage. How will it last & how well will it perform?
Date published: 2017-03-14
Rated 5 out of 5 by from A product that really works This coating is awesome. At an outside temperature of 93 in August I used my infrared thermometer & the underside of my metal back porch roof at 3 P.M was 148 After applying 2 coats of 805 at the same time & temperature the reading was an unbelievable 98 degrees.
Date published: 2016-08-30
Rated 5 out of 5 by from worked great... kept the roof from leaks we had prior to putting it on and keeps the room a lot c... worked great... kept the roof from leaks we had prior to putting it on and keeps the room a lot cooler...
Date published: 2017-06-07
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-05-20
Rated 5 out of 5 by from very satisfied with product very satisfied with product
Date published: 2017-05-30
Rated 4 out of 5 by from easy to apply easy to apply
Date published: 2017-06-11
Rated 5 out of 5 by from Noticeable difference in temperature We had a "budget" metal shed that we waited a bit long to assemble, so by the time we did it had quite a bit of metal rust showing. We bought STA-KOOL 805 METAL-X METAL ROOF COATING to seal up the metal to prevent further rust and also seal the joints from moisture. We live on a hill with almost no trees in Texas heat. When the coating was complete on the roof and sides, it went from a virtual oven inside to a shed you could actually work in with just a box fan.
Date published: 2015-08-15
Rated 5 out of 5 by from Great results The metal roof of our sunroom was quite rusty. The product overview stated Metal X contained rust inhibitors. From the advice of the staff at our local St Petersburg Home Depot, we ordered the product. The metal roof was cleaned and treated with Prep and Etch. We followed the application instructions and 2 coats of Metal X was painted on with a paint roller and brush. It looks great. The results were to our satisfaction and more.
Date published: 2015-01-07
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