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Old 04-30-2018, 09:19 PM   #1
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Brand: Thor Motor Coach
Model: ACE 29.2
State: Virginia
Posts: 22
THOR #9819
Painted Coleman-Mach AC Rooftop Housing White

It took a day, mostly on account of drying in between sprays, but it looks nice and hopefully will reduce the amount of heat gain on the rooftop AC unit, thereby increasing efficiency and helping to keep the interior cooler.

I ordered the gloss white Rust-Oleum Paint For Plastic ($5.61) because it does polypropylene and the white XIM Plastic & Vinyl NT100 plastics bonding primer ($12.99, also for polypropylene) from Amazon (total with sales tax $19.72). I'm trying the "gloss" in the hopes it is a little more "mirror-like" and bounces more sunlight away.

I made sure they were dry of morning dew and sprayed the primer. Took the entire can. Since it's white, I was hoping that would help the final coat, which it did. I also used a rubber glove and a good spray mask.

I had to wait 1 hour before spraying the top coat. Also used the entire can. I probably should have ordered 2 cans. That then dried for about 6 hours before I reinstalled it.

Easy to do, and beats the cost of a new housing. I've included a couple of before, during and after, pictures
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Old 04-30-2018, 10:23 PM   #2
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Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 11,197
THOR #8860
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Current coach: Tiffin Wayfarer 24 BW
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Old 05-08-2018, 09:20 AM   #3
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Brand: Thor Motor Coach
Model: Challenger 37KT
State: California
Posts: 68
THOR #3681
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Originally Posted by Bob Denman View Post
Always wondered why more of them are black now. Great job, I may copy this ideal.
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Old 05-08-2018, 11:08 AM   #4
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Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Georgia
Posts: 3,664
THOR #11130
Same here...last unit had white A/C's...new one has black ones. I was told the black holds up better in the sun. Contrary to what I've always thought. I remember helping a guy once run some phone lines outside...he used black wire ties. He also said they last longer and are less resistant to sun damage. Doesn't make sense to me.
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