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Old 04-29-2010, 02:10 PM   #1
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Talking Roof Coating Recommendations...

I'm researching roof coating materials and would like to know if anyone can recommend a suitable/effective product to both seal and reflect heat from sun exposure.

Thanks in advance....

Art
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Old 04-29-2010, 02:28 PM   #2
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overlander63 used something similar to Kool Seal. Some discussion here but posted about it many times.
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Old 04-29-2010, 03:36 PM   #3
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Thanks, Bob. Looks like Ceramiflex is the way to go...!
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Old 05-26-2010, 02:46 PM   #4
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OK, where can I purchase this Ceramiflex? I called Camping World adn was told they do not carrie any thing like it, I was also told that they do not carrie anything for Airstreams.
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Old 05-26-2010, 03:23 PM   #5
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I am using it too

I got mine thru BRADCO. I was going to give you a link, but when I looked up locations I see where you are in a "no mans land" for their distributors. I think you can check your local supply houses and they can order it.

Welcome to Bradco Supply - Your best choice for Roofing, Siding, Windows, Doors, Kitchens and Tools
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Old 05-26-2010, 04:15 PM   #6
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I have used Snow Roof on two trailers, it works very good, it is white and keeps the trailer cooler. You can get it at Ace Hardware.

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Old 05-26-2010, 04:36 PM   #7
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Many roofing supply companies will carry the Ceramiflex (made by Sealoflex). Another simliar company with very similar products is Hydrostop--they likely have a ceramic based coating like the Ceramiflex.
Our local Ace Hardware carries the Sealoflex stuff, too.
Good luck,
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Old 05-26-2010, 07:03 PM   #8
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Sealing or Heat Reflection?

It depends. Do you want to reflect heat? Or do you want to seal seams from water leaking in?

If you want to seal seams from leaking, use aluminum Kool Seal. Avion recommends it as the only thing to use. I used it on mine and it works great. You can get it in silver or white.

If you want to reflect heat, you should paint it. The key is that you must first etch aluminum. Get yourself an Aircraft Spruce and Specialty catalogue or go to their website. It's a multi step thing. Not hard at all. I did it to my 34 foot Avion and it's a measured ten degrees cooler now. You have to wash it first very thoroughly. Get all the surface dirt, grit, sap, etc. off the roof. Then you use a special aluminum cleaner that basically cleans out the grains of the aluminum very well; the stuff you can't see nor get with soap and water. Now tape off the trailer. If you're careful you can get by with just newspaper and 3M blue masking tape. If you want to be super thorough, use plastic sheet. I came just a little bit past the roof and onto the corner pieces, but not much. From the road, I only want to see silver. OK, so you've masked it off. Now you have to etch the aluminum. Take the chemical wash (a gallon will do a 34 footer) and pour it onto the roof and hit it with a course nap roller. Do this as quickly as you can. You let it sit for 20 minutes or so; directions are on the jug. You will see the aluminum start to turn darker. After the allotted time is up, you take the hose and rinse the stuff off. After you get the roof rinsed off, hose down the sides very thoroughly so that you don't etch the sides. It could leave streaks that I don't know you can easily get out. After the roof drys (and don't wait days here.....I'm talking an hour) you want to paint the roof with aircraft aluminum primer. Like zinc chromate or something similar. Whatever Aircraft Spruce sells will work fine. I got mine as surplus from US Air, but you can buy it from AS&S. Roll your aircraft primer on with a medium nap roller. You have to work fast, because the solvents in that stuff flash off fast. You'll want to do this outside or in a very well ventilated hangar. Wear a dual filter paint shop respirator when you use this stuff. Get a good coat of this primer on there and call it a day. After this drys (and you've kept it good and squeaky clean), you can then roll on a coat of the gloss white paint of your choice. I used gloss white Rustoleum. That was two years ago and it's held up perfectly.

The whole key is the prep. You do that right, the paint will stick no problem. You don't, and it will flake right off.

lots o luck,
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Old 05-26-2010, 08:26 PM   #9
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I used the white Kool Seal coating to seal and coat, which sealed a pesky leak and get the trailer ten or so degrees cooler than a virtually identical trailer owned by our friends. Theirs was not coated/painted, and our 13,500 btu a/c can keep our trailer as cool as their uncoated trailer with a 15,000 btu a/c.
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Old 05-26-2010, 09:26 PM   #10
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Originally Posted by overlander63 View Post
I used the white Kool Seal coating ...
Any signs of streaking down the sides? My '91 has a white coating applied but is so stained I'm gonna have to topcoat it to cover the 'ugly'.

I'm kinda leaning to the rustoleum option but would like some long term feedback on all the stuff thats been tried.
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Old 05-26-2010, 09:48 PM   #11
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Any signs of streaking down the sides? My '91 has a white coating applied but is so stained I'm gonna have to topcoat it to cover the 'ugly'.
No real streaking yet. We moved from a drier climate to a much wetter one, so I may see some streaks after we've been here a while.
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Old 05-29-2010, 09:09 AM   #12
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I have had no streaking at all in three years with the Kool Seal. But, I only applied it to the seams; so I've got 2" wide stripes of it. I didn't paint the whole roof with it. Maybe it's a case of the more you have on there the more likely you are to get the streaking.

My paint has held up wonderfully. Just make sure you follow the proper procedure for etching and all and you'll be fine.

Check these out:

http://www.aircraftspruce.com/catalo...lumcleaner.php
http://www.aircraftspruce.com/catalo...imersealer.php

http://www.aircraftspruce.com/catalo...xideprimer.php

These aren't the exact ones I used, but are of the same kind. Looks like Stuart has their own system where you use their etch/wash (after you soap and water it really well) and then use their single stage primer. That's easier than the stuff I used. What I had was more like the PTI primer, where you mix a catalyst in with it.

I used the etcher/wash stuff, and then the 2-part primer where you mix the catalyst with it. I used the 2-part only because I got it for free (it was some stuff US Air was throwing out because the expiration date had already arrived and my A&P buddy rescued it from the dumpster). With the catalyst, the stuff flashes off fast, you have to work quickly . The 1-part stuff is probably easier to work with.

My paint has been on for two years and it's held up fine.

see ya on the road,
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Old 05-30-2010, 07:08 AM   #13
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You can avoid the etching and serious prep by using the Ceramiflex. It only requires a good soap and water scrubbing for preparation.
The Hyrdrostop and Sealoflex products are designed for watertight (nearly) flat roofs and decks on houses that have living space beneath. These decks commonly have aluminum flashing around the perimiter to prevent water intrusion. I am a painting contractor by trade and have been using these products for a decade. Have yet to see one instance of the product loosing adhesion to aluminum or any other metal for that matter with zero preparation to the metal before application.
The Ceramiflex has both sealing and heat reflection qualities so I think it is a superior product in this application to any paint and allows you to avoid all the risks of damaging your Airstream associated with the etching. I have also never seen any streaking on downstream surfaces even with some age on it. It will need a maintenance coat occasionally (depending on sun exposure every 5 to 8 years).
For the record, I have no financial interest in either of their companies--just know they are good products that will last a long time and do the job intended. The Ceramiflex has been on the roof of my trailer for about six months and it looks like it was just applied. Would not hesitate to do it again.
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Old 05-30-2010, 08:14 AM   #14
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Guys:
I decided to apply Ceramiflex and really like the results. I spent an afternoon installing the material with ther recommended two coats. Looks fantastic and waiting to determine if I'll be experiencing lower internal temps this summer.

I have approximately 3 gallons remaining in the 5-gallon container if anyone needs it.

Thanks for the assist!
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