Single Ply Membrane Coatings
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Old 09-02-2010, 05:11 PM   #41
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Re: Single Ply Membrane Coatings

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Originally Posted by RooferJim View Post
I understand your point, but my point is that the membrane itself is almost never the issue. Thats why I do repairs with like materials. EPDM we repair with EPDM, PVC we repair with PVC, infact we try to always use the same original manufactures not only for warranty complience but because the formular for the membrane would be exact. Painting "coating,etc" makes it impossible to repair properly. I have been in this industry long enough to have an informed opinion. Although I do believe that coating an old metal roof can be a good thing, just not single ply. We did a GAF Topcoat job last year with good results and the patina green finish coat looked good.
I tell the building owners the truth, im not just in this for the money.

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www.jbennetteroofing.com
I had the same thoughts 20 years ago. I called it a bucket of wonder. When I started spending a lot of time with RCI years ago I started to experiment with coatings a bit more. Like anything else lots of great coatings out there being improperly installed. Yes the field seems do need to be recovered on EPDM but the heat welded seams only need to be probed before coating. One of the roofs in the pictures is an EP membrane and it was the membrane itself that was the issue. There was no way to spot repair it. A full coating allowed for a full NDL and gave the roof an energy star rating. Primer is called for with some of the weaker products but should not be needed with most of the non water based products. I don’t understand how coating makes it impossible to repair properly. You should ask for a few free 5 gal samples from a manufacture. You might be surprised
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Old 09-02-2010, 07:27 PM   #42
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Re: Single Ply Membrane Coatings

What is EP membrane ? We have used coatings for metal roofs just not single ply.
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Old 09-02-2010, 08:17 PM   #43
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Re: Single Ply Membrane Coatings

It is a single ply thermoplastic that was made by Stevens. Overall it did not work out to well. You can cut a sq ft of 7 year old EP from a roof and hold it up to the sun and see light through it. I think they still make it with a “new improved” formula

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