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Old 07-22-2019, 08:31 AM   #1
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1981 31' Excella II
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Best White Roof Coating

I have heard good results from this stuff but it ain't cheap. I was thinking of putting this on the roof of the Airstream. I wonder of 1 gallon will do the roof between the awnings and the front end cap upper seam? Any other coatings out there that last and won't mildew?



For those of you that don't know, white is the best roof coating for keeping the trailer cool. It not only reflects light coming in but it is also good at radiating the heat away. Polished aluminum is not great at radiating heat away.



https://www.amazon.com/Henry-Tropi-C...s%2C178&sr=8-1


Perry
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Old 07-22-2019, 10:15 AM   #2
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4" Eternabond. I put that (bleep) on everything.

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Old 07-22-2019, 11:42 AM   #3
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2010 25' FB Flying Cloud
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I used Bus Kote. I did 2 coats from 1 inch outside rivets and all but under AC. It's been 2 years and coach is cool and it insulates against sound. I have a 25 ft FC.
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Old 07-22-2019, 12:36 PM   #4
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I would really like to paint the top of my trailer. It’s the only part of the trailer, other than the blue stripe, that shows it’s age (29 years). Plus I like the look and the cooling effect.

Due to my loss of coordination over the past few years (it’s come down to bragging about glory days - the older I get the better I used to be, but I digress) I’m reluctant to climb on the roof of my trailer. I know I’m getting to the age where I should probably hire some things out but I’ve been DIY my whole life and it’s tough to change. Can you do a good job from the side with a roller and a long handle?

Thanks,
John
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Old 07-22-2019, 12:52 PM   #5
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2019 22' Sport
High River , Alberta
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Originally Posted by John&Vicki View Post
I would really like to paint the top of my trailer. Itís the only part of the trailer, other than the blue stripe, that shows itís age (29 years). Plus I like the look and the cooling effect.

Due to my loss of coordination over the past few years (itís come down to bragging about glory days - the older I get the better I used to be, but I digress) Iím reluctant to climb on the roof of my trailer. I know Iím getting to the age where I should probably hire some things out but Iíve been DIY my whole life and itís tough to change. Can you do a good job from the side with a roller and a long handle?

Thanks,
John


A length of aluminum extension ladder, and couple of short pieces of pool noodle slit with a knife to prevent the ladder from damaging the side, and I was able to wash and wax the roof of our trailer a couple of weeks ago. If you are reach with a short pole, you should be fine.
Getting it good and clean is most important. A good scrub with dish detergent should remove any grease or wax on the roof.
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Old 07-22-2019, 12:56 PM   #6
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1981 31' Excella II
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You should be able to paint it will a roller on the end of a broom stick but you need to clean the roof and get all the mold etc off the roof. Don't tell anyone but I actually used bleach to kill the mold up there with no ill effects on the trailer. Probably not something to do on a new trailer with the corrosion issues.



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Old 07-23-2019, 11:38 AM   #7
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Don't know if white GACO silicone sticks to aluminum (should based on marketing), but at high noon in Hawaii, it feels like cool porpoise skin.
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Old 07-23-2019, 12:49 PM   #8
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BusKote

Quote:
Originally Posted by perryg114 View Post
I have heard good results from this stuff but it ain't cheap. I was thinking of putting this on the roof of the Airstream. I wonder of 1 gallon will do the roof between the awnings and the front end cap upper seam? Any other coatings out there that last and won't mildew?
We used BusKote, and the results were better than expected. It was applied in Texas last September, and there was over a 10 degree drop inside the day after doing the first coat, with the original Penguin AC.

We can now keep the inside of our 34' in the mid to upper 70's even when it's in the upper 90's outside, with a single 13.5k AirCommand AC unit. Two things that help tremendously, having awnings all of the way around, and using enough roof coating.

We used 1 gallon of the primer, and 2 gallons of the coating, plus 1 gallon of the clearcoat finish. Unfortunately we used too much of the clearcoat, which caused some slight yellowing, but it does make it easier to keep clean. In the attached pic you can see the difference between the clearcoat finish, and the freshly applied BusKote when we installed the new AC.

Make sure that a silicone coating will stick well on aluminum, you might need some sort of primer. It is not too difficult, but it's definitely not something you want to redo.
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Old 07-23-2019, 03:24 PM   #9
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1959 24' Tradewind
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Bus Kote for me

I also used Bus Kote and purchased from Amazon. I taped off the area I wanted coated, rolled it on with a short nap roller, brushed some areas. It's really thick stuff and only needed one application. I just used a gallon on my 24ft Tradewind, went from end cap to end cap and down just past the first longitudinal seam. They have a top coat too, but I didn't use it.
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Old 07-23-2019, 03:37 PM   #10
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Quote:
Originally Posted by John&Vicki View Post
Iím reluctant to climb on the roof of my trailer.
I did not have to climb on the roof. From a ladder I was able to reach to the center. I am kind of tall though. I used several ladders: a lightweight 7 foot ladder and an articulating ladder.

I used Bus Kote, also the Bus Kote Clear finish.

If you put bus Kote on too thick it will yellow but the yellow goes away after a few months.
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Old 07-23-2019, 06:30 PM   #11
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