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Old 10-14-2013, 04:06 PM   #1
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roof sealant

I know this has most likely been discussed before, but I am debating what type of sealant to use on our TPO roof. According to Alpha-systems, you should use their sealant, which would be fine if it were readily available, but I'm not having much luck. I have some Dicor, but it says it may not be good for some TPO membranes. What is everyone else using?
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Old 10-14-2013, 06:21 PM   #2
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To patch a small gap, my dealer gave me a small amount of Dicor. My roof is the TPO by Alpha Systems, so it seems my dealer uses Dicor on all rubber roof types. I wondered the same thing as you, but I didn't specifically ask the dealer that question.

Another thought; the Dicor tube says the solvent in it, is naptha.
Coleman stove fuel is naptha. My dealer said to use the naptha to clean the target area before applying Dicor.
I would say, as long as naptha doesn't attack (melt) the Alpha Systems TPO material, the Dicor should be okay to use.
It seemed to be okay for mine.
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Old 10-16-2013, 04:15 PM   #3
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Here is another thread with discussion on Alpha Systems TPO.
https://www.jaycoowners.com/showthrea...Alpha-Ply-roof
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Old 10-16-2013, 04:20 PM   #4
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Thanks! I did actually find a dealer who sells the Alpha sealant, so I am going to try and order some from them. I don't know why these companies have to make this stuff so difficult.
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Old 10-17-2013, 05:07 AM   #5
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Quote:
Originally Posted by amabee View Post
Thanks! I did actually find a dealer who sells the Alpha sealant, so I am going to try and order some from them. I don't know why these companies have to make this stuff so difficult.
Yes, I do think the Alpha sealant would be the best to use. The naptha in the standard Dicor is a petroleum distillate, which seems to be a problem. The TPO roof material has not been around as long as EPDM, so maybe in time the more compatible sealant will be more available.
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Old 10-28-2013, 02:08 PM   #6
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I just called Jayco customer service about the correct sealant to use on my 2009 22FB with an Alpha Systems EPDM, and they advised me to use Dicor self leveling sealant. They told me that they have recommended that to everyone for a long time.

Edit: Sorry, I just now saw that the thread is about TPO, not EPDM. My bad....
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