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Hot tar roofing question; can i do hot tar [built up roofing] OVER existing hot tar [built up] roof that has?

Answers:1   |   LastAnswerAt:2011.04  

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ong jon 
Asked at 2011.04.06 03:13:35
been recently coated with "aluminum roof coat" [ WHICH IS AN ASPHALT PRODUCT]
PLEASE STATE SOURCE OF INFORMATION..THANK YOU.
answer bud  Answered at 2011.04.06 03:13:35
i haven't mopped over an entire roof but have done an addition it surprised me how good they tied in together the aluminum coat was stinky but it just kind of flouted on top of the hot tar when it dried it looked great. you could see some swirls from the alum coat but it was going to be top mopped and painted so i wasn't worried about it. this was done at least 8 years ago i have never been called back.i remember calling the manufacture of the alum roof coat they wasn't a lot of help only saying that it should be fine since it was an asphalt emulsion with alum pigment. my worry would be if the roof had to much slop and you couldn't control the alum coat from running to much when it got hot... cleaning drip metal sucks.
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