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Old 09-26-2018, 08:11 PM   #1
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Dicor Lap Sealant Question

I've been doing some research on Dicor lap sealant for my TPO roof and I have a few questions. First, for you all who have a TPO roof do you have to use the ultra sealant? If so, that stuff is a pita to find. If you don't use the ultra sealant, what do you use? Also, what do you clean and prep the area with? And by area I mean the TPO roof and existing lap sealant.

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Old 09-28-2018, 08:58 PM   #2
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The ultimate authority is Dicor. Download their Roof Care Handbook.
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Old 09-29-2018, 07:26 AM   #3
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A great 3 minute video for resealing your roof.

I always touch up lap sealant after washing the entire roof with an approved RV Roof detergent (pick your favorite brand at your local RV store). Ours roof is compatible with Dicor and found it easy to work with.

Good luck.
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Old 09-29-2018, 09:21 PM   #4
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I looked on the Dicor site. I couldn't find anything that could clear up my questions.
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Old 09-29-2018, 09:29 PM   #5
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I had the BriteTEK roofing on my '02 DSDP. Never used any sealer than the standard Dicor Self Leveling sealant
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Old 09-30-2018, 10:30 AM   #6
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Camping world has a sealer called superflex sealant which will work on tpo roofs and there is a another sealer called alpha systems sealant they say will work on tpo roofs as well.
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Old 09-30-2018, 03:11 PM   #7
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We have a new fiver with a TPO roof. After reading your post I started searching around and have decided to go with Sikaflex 715 for my roof.
Hereís a link:

It looks like that Dicor Roof Handbook was written back in 2012. Iím wondering if they are even making their Ultra product anymore. If you can find it, Iíd check the age of the product.
Iím still looking into cleaning. It seems that anything with petroleum distillates is a no no. Some people used alcohol to clean.
Dicor Lap Sealant is solvent based, but I read in multiple places where people used it. Roofs wrinkling up temporarily seemed to be a common occurrence.
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Old 09-30-2018, 03:45 PM   #8
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we use the regular dicor lap level and non-level. we follow the instructions on the caulk tube. I think it calls for mineral spirits used sparingly to clean the area and let dry (I might be wrong). in some areas like the slide out we used Eternabond. That tape works fantastic if you follow the directions..
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dicor, seal, sealant

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