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Old 06-11-2016, 03:26 PM   #1
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1985 34' Sovereign
Nashville , Tennessee
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White Roof coating, would you do it again?

Looking for input on a white roof paint/elastomeric coating for both sealing and heat rejection properties. If you have a NON-factory white roof, please post up camper, type of coating and age of coating, and your experiences/would you do it over?

Context: I'm renovating/full timing in a 34' 1985 sovereign in lower Alabama. Stripping and sealing the roof got me to thinking that lower Alabama = extreme heat + pop up storms and a white sealed roof mitigates both problems at once.
My 1985 owners manual says to re seal the roof with Kool-seal, and that is definitely the most available elastomeric coating out there. I'm a chemical engineer, though, and my instinct is telling me a combination of surface prep, primer, and an extremely tough urethane will get the longest lasting results. I've been eye-balling Imron 3500HG, or Interlux Brightside as they get stellar reviews. I'm just unsure if they are elastic enough for this application, or which primer is best. Do I even need a primer at all? Imron seems to claim it goes well over any reasonably prepped metal, and I'm not afraid of sanding this thing since 1985 is not exactly a collectible year and the interior is mostly gone

Oh and plasticoat is 95% gone other than a few awkward vertical strips.
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Old 06-11-2016, 04:33 PM   #2
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1975 31' Sovereign
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I used Truco coating. I had some left over from a commercial project. I put it on about 10 years ago, sold the trailer, but it is still on their and working well.

Aaron
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Old 06-12-2016, 08:11 AM   #3
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1985 34' Sovereign
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Originally Posted by wahoonc View Post
I used Truco coating. I had some left over from a commercial project. I put it on about 10 years ago, sold the trailer, but it is still on their and working well.

Aaron

That sounds like what I was hoping to hear, do you remember which coating you used?
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Old 06-12-2016, 08:23 AM   #4
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1975 31' Sovereign
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That sounds like what I was hoping to hear, do you remember which coating you used?
Probably the 7140 or the 7140-FM, we had all of them on hand at one time or another. Given the time frame I did it that was probably what we were using.

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Old 06-12-2016, 12:03 PM   #5
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1974 25' Tradewind
Lexington , Kentucky
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White roof paint

On our 74 Trade Wind:
Removed all (what there was) of the clearcoat.
Wet sanded with 220 grit wet-and-dry sandpaper.
3M blue tape along the edge.
6 inch roller with broom handle....applied Rust-Oleum Aluminum primer then rolled Rust-Oleum Gloss white paint = looks great.
May need another coat though.
Gluck.
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Old 06-12-2016, 12:20 PM   #6
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2007 25' Safari FB SE
1964 22' Safari
Hammondsport , New York
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Roof coating

I was in the coatings business for 45 years and the Truco 7140 is the toughest flexible coating I've ever seen. Should adhere great to a clean surface.
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Old 06-12-2016, 12:56 PM   #7
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I've used this product, Bus Kote, on both a previous Airstream and a Foretravel motor home we've owned. When our current Airstream needs a coating, will use it again. Excellent for roofs, sealing and insulating.

http://www.hytechsales.com/prod2150.html
.
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Old 06-12-2016, 01:26 PM   #8
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White Roof coating, would you do it again?

I used Imron 3500HG three summers ago. Today it is the same as I put it on, it is an EXCELLENT product.

No primer is required if you sand well, and it is plenty elastic enough to stick on aluminum for many years. I started using the stuff eight or nine years ago, no peeling, chalking, checking, or fading to this day.

It makes a huge difference in full sun, if I put one hand on the white and one on bare aluminum, I can bear it for a perhaps a second on bare aluminum, but indefinitely on the painted surface.


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Old 06-12-2016, 03:18 PM   #9
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Would you use this on a vintage trailer?
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Old 06-12-2016, 06:34 PM   #10
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Quote:
Originally Posted by Caroyl View Post
Would you use this on a vintage trailer?
.
I used the Bus Kote on a 67 Airstream Safari with excellent results.
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Old 06-12-2016, 08:20 PM   #11
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Would you use this on a vintage trailer?

If I was going to camp in it I would.

If I was just going to admire it maybe not.


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Old 06-12-2016, 08:50 PM   #12
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I did my 71 with Ceramiflex (no longer available) Still good going on 10 years. I will also do my 93. It's a no brainer here in the southwest.
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Old 06-13-2016, 12:04 PM   #13
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Originally Posted by J. Morgan View Post
I used Imron 3500HG three summers ago. Today it is the same as I put it on, it is an EXCELLENT product.

No primer is required if you sand well, and it is plenty elastic enough to stick on aluminum for many years. I started using the stuff eight or nine years ago, no peeling, chalking, checking, or fading to this day.
J.Morgan,
I looked up the Imron and I've found Imron 3.5 HG+. Is this what you have used or is there really an Imron 3500 HG, or have they changed the name somewhat for some reason. The 3.5 HG+ has excellent properties from their Tech Data Sheet. I'm excited that there is such a "paint" that can be rolled, brushed or sprayed and can be recoated years later with minimal prep. Almost seems "too good to be true"!
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Old 06-13-2016, 01:43 PM   #14
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White Roof coating, would you do it again?

It is really good stuff.

I have used it fairly extensively.

IMO it is better, stronger, more forgiving, and cheaper than anything comparable paint including automotive paint.

Here is a link to some of the things I have painted with it.

http://s245.photobucket.com/user/JMD...hop/Imron%2035

<div style="width:480px;text-align:right;"><embed width="480" height="360" src="http://pic2.pbsrc.com/flash/rss_slideshow.swf" flashvars="rssFeed=http://feed245.photobucket.com/albums/gg64/JMD_LCMS/LR%20Shop/Imron%2035/feed.rss" type="application/x-shockwave-flash" wmode="transparent" /><a href="javascript:void(0);" target="_blank"><img src="http://pic.photobucket.com/share/icons/embed/btn_geturs.gif" style="border:none;" /></a><a href="http://s245.photobucket.com/albums/gg64/JMD_LCMS/LR%20Shop/Imron%2035" target="_blank"><img src="http://pic.photobucket.com/share/icons/embed/btn_viewall.gif" style="border:none;" alt="JMD_LCMS's album on Photobucket" /></a></div>

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