Join the MRA | Member Login
Find a Professional
  • Why Metal Roofing?
    • About MRA
    • Benefits of Metal Roofing
    • Compare Roofing Materials
    • Homeowner Testimonials
    • Inspiring Metal Roofing Projects
  • Homeowner Resources
    • Metal Roofing Buyers Guide
    • Resilient Housing Guide
    • Metal Roof Sustainability Guide
    • Above All Else You Need a New Roof eBook
    • MRA News
    • Member Provided Resources
    • Today’s Homeowner Partnership
    • 3rd Party Articles
    • Frequently Asked Questions
    • Preparing for Hurricane Season
  • Gallery
  • Visualizer
  • Ask The Experts
    • Energy Efficiency
    • Existing Metal Roof Questions
    • Installation
    • Is A Metal Roof Right For My House
    • Metal Roofing Benefits
    • Product Selection
    • Other
    • Archive
  • Find a Professional
Join the MRA Member Login
Sign Up Log In Add New Topic

TOPIC: Painting/Coating metal roofs

Painting a Metal Roof

Return to Painting/Coating metal roofs

Return to Archive

Return to Forum

This topic has been closed by the administrator. Comments are no longer accepted.
We recently moved into a house with a metal roof above our front porch. The home and the roof are only 3 years old, but the paint has faded considerably and the roof itself has some small patches of rust (dime sized). I am planning on treating and repainting the roof (hopefully with something a bit better than what the builder put down) and would like some advice as to what I should be doing. I assume that I should sand the roof, treat with a metal primer, and then paint. Are there any general guidelines as to what kind of paint, primer, etc. I should use. This isn't a huge roof, it is over our porch only. The rest of the house has "standard" roofing material. Thanks! Todd
Guest User

9/24/2002
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/1146/find/
Hi Todd, Your "plan" sounds pretty good. I would try just power washing the roof first to see if that does a good enough job of knocking off any loose paint. If you do sand it, especially in the areas where there is no rust, be careful to not sand into the metallaic coating (either galvanized or galvalume in all likelihood) on the metal. That would further shorten its life. As for a paint system, I would go to a quality paint store and use whatever primer and top coat they suggest for repainting metal roofing or siding. The other alternative is to buy an air-dry Kynar paint. You would probably have to contact a metal roofing manufacturer, though, in order to get some contacts to buy air-dry Kynar ... and expect to pay a couple hundred, or more, dollars per gallon for the paint. Todd Miller
Todd Miller
Isaiah Industries, Inc.

9/25/2002
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/1147/find/
I have a 100+ year old bank barn with a standing seam roof. It was painted with aluminum asphalt fiber coating about 10 years ago. It is still in pretty good condition with just a few small areas of rust. I want to keep ahead of it and have it repainted. I have had a couple of contractors out and they have all suggested different methods, from completely stripping off the old paint to just spraying on a new coat. I would appreciate an opinion from a disinterested third party. Thanks, Jim
Guest User

9/25/2002
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/1148/find/
Adhesion is the primary concern/factor. This would be looking at adhesion to the metal and, if any of the old paint is left in place, adhesion between the old and new paint. If the current layer(s) of coating appear to have strong adhesion to the metal, they could be left in place. If, however, they can be easily chipped or broken loose form the metal, then the old coating should be stripped as best as possible by power washing or other method. Just be careful to not damage the metal itself. When repainting, regardless, I would use a primer followed by one or two layers of finish coat. Be sure to allow dry time between coats. To find a quality coating, go to a local paint store, tell them the details of what the new coating will go against, and use what they suggest for best adhesion. There are also air-dry Kynar coatings today which would be noted for their fade resistance. These generally are not available direct to consumers but could be obtained by contacting metal roofing manufacturers in most cases. Todd Miller
Todd Miller
Isaiah Industries, Inc.

9/26/2002
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/1149/find/
  • About the MRA
    • Member Companies
    • Leadership
    • MRA News
  • For Professionals
    • Join the MRA
    • Industry Resources
    • Upcoming Events
  • Contact
  • Subscribe
©2023 Metal Roofing Alliance. All Rights Reserved. Privacy Policy Terms and Conditions