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Country Discussion Topics
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Painting a metal roof?
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Michele in VA    Posted 07-19-2004 at 20:48:44       [Reply]  [Send Email]
My black roof paint is chipped, flaking, and there is some rust starting. This week, I hope, I will hire a guy to powerspray it. Should he be getting all the old paint off or just loose stuff? Also, I heard that once the metal was bare it is good to pour vinegar on it before putting on a primer coat. Also, how many primer/ colored coats should I use? Thanks for the advice, folks.



Bkeepr    Posted 07-20-2004 at 05:48:20       [Reply]  [No Email]
New galvanized roofs need to weather a year before priming so the paint adheres; I'm guessing the vinegar idea is to speed this along. I don't believe it is needed for an older roof.

I've done 3 metal roofs since I moved to my place, all old. Did two myself, paid somebody to do the barn cuz it is so high. Barn started flaking and rusting in a year; ones the wife and I did ourselves looked good for about 3 years before showing any wear at all and that was minor.

We prepped really well. Washed down the roof, let dry. Used stiff push broom to remove all loose paint and rust. Used a stiff brush to get the stuff that wasn't really loose yet but didn't look like it'd stay for as long as I wanted the paint to last (judgement call)...we did not try to remove every bit of old paint, just the loose or soon-to-be loose stuff.

We painted with the silver roof paint on the thought that it would keep temperatures inside (both buildings are chicken coops) cooler in the summer. We brushed it on, rubbed it well into the seams. The guy that did the barn sprayed, which went much faster but of course didn't last at all.

As I said, we did the coops over 5 years ago now and I don't think they'll need redoing for another 5 years so I'm happy. The guy that did my barn and charged an arm and leg is no longer welcome on my farm.

Tom A


mojo    Posted 07-20-2004 at 07:13:35       [Reply]  [No Email]
Yes, it's always a good idea to get references before hiring someone. The house is so high and steep you couldn't pay me enough to get up there, let alone get up there and walk around!


mojo    Posted 07-20-2004 at 05:03:14       [Reply]  [No Email]
We have a feller that is on a cicuit from Texas to Wisconsin that paints roofs, grain bins, and sheds. He uses a silver tar looking stuff that coats well. There is nothing done in the way of priming of even prepping for that matter. Our place still has the original 1910 metal roof so we're doing something right! Try to find out who paints the old grain bins in your area. Good luck!


DigitalMat    Posted 07-19-2004 at 22:04:22       [Reply]  [No Email]
I am also interested. I have a metal barn roof in need of painting. Thanks!


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