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Old 06-17-2013, 08:34 AM   #43
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1972 25' Tradewind
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HENG'S Roof Coating....pre or post.

On a whim and a prayer, I purchased 2 gallons of Heng's Roof Coating, a fibered aluminum roof coating. So, I am planning on painting the roof panel of my '72 TW (if it ever stops raining). It is supposed to cut down interior temperatures by 15%, not to mention sealing most potential leaks up there.

My question is.... As I have removed the roof vents, a/c and cleaned off all the old 'goo' (still have to do some cleaning up there).... Would it be better to paint the entire area BEFORE I reinstall Fantastic Vents and new a/c unit. Or would it be better to hold off on the roof coating until AFTER components are installed and sealed in the usual manner? Which manner would provide the best future leak prevention?

Thanks for your input!
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Old 06-17-2013, 08:53 AM   #44
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Quote:
Originally Posted by arktos55343 View Post
On a whim and a prayer, I purchased 2 gallons of Heng's Roof Coating, a fibered aluminum roof coating. So, I am planning on painting the roof panel of my '72 TW (if it ever stops raining). It is supposed to cut down interior temperatures by 15%, not to mention sealing most potential leaks up there.

My question is.... As I have removed the roof vents, a/c and cleaned off all the old 'goo' (still have to do some cleaning up there).... Would it be better to paint the entire area BEFORE I reinstall Fantastic Vents and new a/c unit. Or would it be better to hold off on the roof coating until AFTER components are installed and sealed in the usual manner? Which manner would provide the best future leak prevention?

Thanks for your input!
I would re-coat AFTER all of your roof-top appliances are in place. This is to allow the gaskets to adhere to bare aluminum and eliminate any possibility of a leak if your new roof coating does not adhere properly (for whatever reason) to the aluminum.

I do a lot of roof re-coatings, particularly on EPDM rubber roofs. Short of a total replacement of the EPDM membrane, we leave everything in place on the roof and coat around them.

Just a side note, I find that DICOR products are the best for this type of application.
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Old 06-18-2013, 09:00 AM   #45
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Lewster - thanks very much for that info! Makes perfect sense to coat after install, to get a good seal on the gaskets.
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