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TOPIC: Painting/Coating metal roofs

Roof Coatings

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We are considering using a silver metallic color and I was interested in knowing how long we can expect it to last (before it fades, cracks shows signs of wear etc.) before we have to repaint it.
Guest User

1/6/2005
Kynar 500 / Hylar 5000 systems are very well proven and well respected. Most of the coating manufacturers offer 30 year warranties with limits on maximum fade and chalk. Those are then usually passed through to the roofing manufacturers and on to property owners. Lighter colors will perform better so metallic silver is a reasonably good choice in that regard. However, metallics are considered "exotic" finishes even in Kynars and you need to confirm the warranty is no different than it is on non-metallics. Furthermore, warranty periods specify maximum fade and chalk. In most cases, even at the maximum amount, the overall appearance is still quite good.
Guest User

1/7/2005
I have a 70 year old tin roof in Washington, D.C. in a house that I rent. I had a leak repaired four years ago and that seems to have worked. The roofers said we should repaint the roof with aluminum paint. When we bought the home in 1981, we painted the metal roof with an aluminum paint. That seemed to be the rage. About six years ago, though, an engineer persuaded me to not repaint with the aluminum paint. He then painted it with some kind of lightweight red coating. I know the roof may again need some type of protective coating. What is the latest thought? I have no idea who the roof manufacturer is, but I believe I need to act soon to get a few more years out of my roof. Thank you for any recommendation
Guest User

1/20/2005
You really need to know the chemistry of the coating that is on the top surface now. That will help in determining what sort of coating would adhere to it. If there are any adhesion problems with the current coating, they will likely re-emerge once another coating is applied, by the way.
Guest User

1/20/2005
Mine is more a question. Since you seem to be talking about roof coatings from New Zealand and Australia, I'm wondering if you know of a product that will make my galvinized steel roof look old? Something along the lines of rust, but not actually. I live in Ketchum, Idaho. I'm putting on an addition and my contractors are telling me it can't be done affordably. Let me know. Thanks
Guest User

6/16/2005
Unfortunately we ended up with a chat from a company that moved here from Australia and is marketing roof coatings most specifically for concrete tile. I would recommend shopping around for a painted metal system that matches the profile only is offered in a low gloss high quality paint. Basically they do have a commercial Bronze/brown type colour that does provide that hue. It may be available only in a thicker commercial steel which might limit the profile and cost. Once you select for the addition and get the paint colour number, you could order additional paint to repait your existing roof. I woould start with ATAS, Fabral and ABC Components who are our members. Go back to the manufacturer section of the site and contact them.
Allan Reid
Dura-Loc Roofing Systems, Inc.

6/17/2005
Todd - What do you think about Hubbell's painted 26-gauge galvulume vs. Coated's product? I believe Hubbell uses BASF vs. Coated's Akzo. I believe they both come with a 25 year warranty. What is the "word on the street" about these two painted galvulume providers? Thanks.
Guest User

6/23/2005
I do not know anything specific to these two but, based upon what you're telling me, I'd say that the two products are probably very similar.
Todd Miller
Isaiah Industries, Inc.

6/23/2005
We are building a super energy efficient house now, and my husband wants a white metal standing seam roof, as white has an R rating of 68, the highest possible apparently. Plus we will have a reflective foil under it, plus 10 inches of Icynene under that! So we know not much summer heat will enter, and not much winter heat will leave, through the roof. My question is: what are the known problems we will have with a white roof , 3:12 pitch. Trees are not directly over the roof, but are all around outer perimeter of site. We know birds will poop and stain it. How hard will it be to clean? How bad does white end up looking and how fast? Will we regret this choice? (House is in Mtns. on steep slope, and roof is shed design that no one but those driving up to front of house will see.) Thands to the panel for any reply.
Guest User

8/22/2007
Look for a Kynar paint finish as it will stay naturally cleaner. Over time, it will gray some. If you look for manufacturers that use reflective pigment paints, you may find some tans that have very very good reflectivity as well.
Todd Miller
Isaiah Industries, Inc.

8/23/2007
To Jo-Ann Herrick: There is actually a great product that is not given a lot of attention on these forums, but is worth mentioning. Reason why it is ignore is because most metal roofs have a high pitch and are visible. Any way, the product is the Acrylic Coating. It is mostly used in commercial applications for flat and low-sloped roofs. It is designed to work with rubber and other flat roofing membranes AND with metal roofs. Basically it is installed using high-power industrial paint sprayers. It creates a "thin" waterproofing (water-tight) film over the spayed surface. By thin i mean about 20-25 mil or .02 - .025 of an inch which is much thicker than Kynar/Hylar and even thicker than some metal roofing shingles. It seals all spots where water may get into and actually becomes a roof of its own using Metal roof as a "substrate". Warranties on these products range from 5-15 or even 20 years. You can reasonably expect it to last at least 10 years. To be installed over kynar/hyler you'll need a special primer. Over other coatings you can probably be ok with the standard primer or again a special primer for a specific surface. Acrylic coatings have a COOL roof rating for white and other light colors. Some even carry LEED certifications. They will reflect as mush as 90% of solar "heat". Again, this is mostly use for "flat" roofing application on commercial/industrial/government and sometimes residential roofs. Installing it on a pitch of more than 3 will be problematic as metal roofs are slippery and coating may "run" down the slope. But if you have a low pitch Tin roof, this product will give you years of service at reasonable cost, and you'll save lots of money on cooling. Good luck.
Leo B.
NewEnglandMetalRoof.com

3/5/2008
Thank you. I had the roof "painted" with the Preservation Products, Inc. Acrymax Elastomeric Acrylic Coating System. It took several days to apply the products --first with a primer, then there was a fabric to apply on problem spots, lastly an acrylic topcoat. I am initially pleased with the results and will let you know in a year or so what I think.
Guest User

3/19/2008
Thanks.
Todd Miller
Isaiah Industries, Inc.

3/26/2008
Try EPDM Liquid rubber as it can easily be applied over Metal, Rubber, Fiberglass, Concrete, Wood, Fabric, Foam and even over the rusted surfaces. I think it would be the best solution for your roof. Check out http://www.epdmcoatings.com/application.html and also, http://www.buyliquidroof.com/ Hope you find the best coating for your roof.. Good Luck!!!
sarah tech

9/20/2008
I would not recommend the use of Acrylic roof coating. I have seen and read about to many failures with "Arcylic Coating" which are no more than glorified paints. If you can wash acrylic coatings off your hands with water why would you expect it to perform on your roof? My recommendation is a Direct Bond M system or Direct Bond MRC system, White in finish. Both systems are used world wide on large commercial projects and have proven track records. Good luck, Jim Hanson www.hansonbuilding.com
Guest User

5/20/2009
Thank you.
Todd Miller
Isaiah Industries, Inc.

5/21/2009
Polyurea.
Aaron Scurlock
The Best in Polymer Roofing Soutions

8/25/2009
Whatever you do, do not use Rose Roofing & Sheet Metal. Currently a Class 4 Felony is being processed for funds issued and lack of work.
Guest User

10/7/2009
thank you
Todd Miller
Isaiah Industries, Inc.

10/10/2009
Hi, just letting you know, Nutech Paint range of roof coating are no only suited to roof tiles, but also suited to metal roofing/surface. the Key is the right primer used, in short, one coating of Nutech A/C metal primer, followed by two coats of either TF 2000 or NXT Cool Zone, both come is over 36 colors Robert Dixon [email protected]
Guest User

8/12/2010