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Old 08-01-2004, 07:41 PM   #15
swebster's Avatar
1986 34.5' Airstream 345
Louisville , Kentucky
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I plan to coat the top panel with Kool Seal (or similar) when I strip the clear coat. Had a long talk with Tom at Perfect Polish about this and he said many people are starting to do this to keep polishing and polish maintenance down on larger units. Seemed to make sense and should also help reduce temps inside.

Steven Webster
1986 Airstream 345 Classic Motorhome
AIR 1760
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Old 08-02-2004, 10:04 AM   #16
Gary & Lurleen
Join Date: Jul 2004
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Kool seal

I will probably go this route also when I strip the roof of my 88 excella. The extra help to the cooling would be a definate plus here on the gulf coast. i will probably go from above the awning and across. i don't think it would be very noticeable from the ground. Anyone have any pictures of their unit and where they made the line when coating the roof?

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Old 08-02-2004, 11:49 AM   #17
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1970 27' Overlander
lewisville , Texas
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Yea... PICS?! I'd love to see what it looks like before I do mine...
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Old 08-02-2004, 03:18 PM   #18
Rivet Master
1973 31' Sovereign
Portland , Oregon
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Adds Insulation value?

I am guessing a bit here but it seems to me that the general thinking for having a white top (relative to cooling) would be to improve reflection of the heat. My guess is that in the case of using white instead of shiny aluminum that the reason the AC does not work as hard is not really because of better reflection but because of the fact that the white coating helps insulate the aluminum from the hot air surrounding the trailer. Is the white coating really going to reflect the heat better than a shiny aluminum surface? Does anyone know the relative merits of white vs. shiny aluminum regarding reflectivity? I do know that reflective insulation seems to always be very shiny aluminum and not white material.

As to why the factory might be switching to white it could be that there is a cost savings involved too.

I am not at all saying that putting the white coating on is a bad idea I am just speculating as to why it really helps. I certainly favor anything that will help prevent leaks in any case. I have even thought about coating the entire inside of my outer skin (I currently have the entire inner skin off) with something to help seal up leaks and insulate a bit.

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Old 08-02-2004, 03:36 PM   #19
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1986 34.5' Airstream 345
Louisville , Kentucky
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Honestly I was thinking about it as 120 square feet that don't need polishing If it helps with the temps too then BONUS!
Steven Webster
1986 Airstream 345 Classic Motorhome
AIR 1760
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Old 08-02-2004, 03:40 PM   #20
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Originally Posted by dbtolman
Kool Seal makes an Aluminum Roof Coating:
Hmmm... SO I guess it is aluminum colored? Anyone see a reason why this wouldn't work?
I have used another brand of aluminum roof coating and it was silver when I applied it and after a littler while it turned black, guess that was from dirt, but it would not wash off to silver again as it had a tar like texture.

If you are intent on painting the top of your unit white, all you really need to do is to first remove what is up there now, meaning plastic coat if yours is still good. You will need to use a striper for this, but be careful not to get any of it anywhere else or it will do its job there too.

Once you have your roof stripped and clean it is ready for the primer. Use an aluminum bonding primer. They are available in a white and a red color.

Once the roof has been primed you can paint any color you like on top of it and if you want to clear coat that color it will hold that as well. Normal painting techniques need to be followed.

This type of painting should last for 20 years with the right maintenance, but you will still need to seal your roof as per usual since the unit does flex as it is moving.

Just adding my 2 worth

John G
1975 31ft Sovereign International
........Rear Bath Double Bed Model
Tow Vehicle:1999 GMC Serria SLE Classic 1500 5.7Ltr
System: Jordon 2020 Ultima Brake Controller
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