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Old 12-17-2018, 08:15 AM   #1
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Sealant for Class C

What do people use to seal their Winnie Class Cís?

Both of my local dealerships, one a Winnie dealer, use Novaflex sealant for the roof and sides. Any idea if this seal falls into the category of silicone sealant that everyone says to avoid?

I would love to know what people use for their roof, sides, and joints on the front cap. The part number in my manual is hard to match with a current brand.
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Old 12-17-2018, 08:27 AM   #2
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Dicor. Dicor self leveling lap sealant for the roof and other horizontal surfaces, Dicor non sag lap sealant for vertical.

Googled Novaflex because I never heard of it, it seems to be silicone based. I would avoid it.

The issue with silicone is it tends not to hold up due to the flexing an RV goes through, nothing else will stick to it, and it is nearly impossible to remove.
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Old 12-17-2018, 08:28 AM   #3
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Originally Posted by Driftless RV View Post
What do people use to seal their Winnie Class Cís?

Both of my local dealerships, one a Winnie dealer, use Novaflex sealant for the roof and sides. Any idea if this seal falls into the category of silicone sealant that everyone says to avoid?

I would love to know what people use for their roof, sides, and joints on the front cap. The part number in my manual is hard to match with a current brand.
Novaflex is in fact a silicone sealent and comes in colors.
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Old 12-17-2018, 08:30 AM   #4
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Pro Flex RV also works
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Old 12-17-2018, 08:33 AM   #5
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Thanks for the info.

I guess my challenge is to struggle to remove the silicone-based stuff when I need to seal at a later time. I wonder why these dealerships use this stuff if it gets such poor reviews?

I heard Dicor is a top brand. I also heard of Proflex for vertical surfaces.

Any preferred chemical to use to remove silicone that won’t damage the rv?
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Old 12-17-2018, 08:40 AM   #6
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As it's a bear to remove the silicone, and some will say don't use it, I've used electrical cleaner on a rag, using carefully only on the silicone, and after a little elbow grease, it cleaned up, and Pro Flex stuck in that area...
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Old 12-17-2018, 09:40 AM   #7
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Originally Posted by Driftless RV View Post
Thanks for the info.

I guess my challenge is to struggle to remove the silicone-based stuff when I need to seal at a later time. I wonder why these dealerships use this stuff if it gets such poor reviews?

I heard Dicor is a top brand. I also heard of Proflex for vertical surfaces.

Any preferred chemical to use to remove silicone that wonít damage the rv?
The rigs come frome the factory with it.

Back in the day when every sealent was white, and the trailers were white, everybody stayed away from silicone because it was unpaintable and a bitch to remove. With todays color scemes you wouldn't want white caulk running thru it.
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Old 12-17-2018, 09:55 AM   #8
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Pro Flex is available in colors
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Old 12-17-2018, 10:57 AM   #9
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Originally Posted by Driftless RV View Post
Thanks for the info.

I guess my challenge is to struggle to remove the silicone-based stuff when I need to seal at a later time. I wonder why these dealerships use this stuff if it gets such poor reviews?

I heard Dicor is a top brand. I also heard of Proflex for vertical surfaces.

Any preferred chemical to use to remove silicone that wonít damage the rv?
Silicone is mostly used because it is the cheapest product. Next time you're in a hardware store, compare prices of silicone vs other products like ProFlex or Dicor. You really do get what you pay for.

To remove silicone-based products, buy the spray can of silicone residue remover. More silicone will not adhere properly to previous silicone residue.
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Old 12-17-2018, 11:07 AM   #10
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Silicone is mostly used because it is the cheapest product. Next time you're in a hardware store, compare prices of silicone vs other products like ProFlex or Dicor. You really do get what you pay for.

To remove silicone-based products, buy the spray can of silicone residue remover. More silicone will not adhere properly to previous silicone residue.
I plan to use the products suggested in this thread (i.e. Dicor and Proflex) down the road and avoid the silicone-based sealants. They seem to be safe and recommend (by forum members) to use on fiberglass and others areas of the Winnebago. I appreciate your tips on silicone removal, as that seems like an arduous task without the correct supplies.
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Old 12-17-2018, 11:55 AM   #11
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I find McKanica Silicone Caulk Remover works well. I scrape as much of the silicone off using plastic razor blades from ScrapeRite, then apply the McKanica, let it sit for 30-45 minutes, then scrape the remnants off with another plastic razor blade and clean up with Alcohol.

https://www.vintagetrailersupply.com...-p/vts-378.htm

https://scraperite.com/


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Old 12-17-2018, 03:04 PM   #12
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I have found that Proflex dries more or less hard. When I used it where the trim met the end cap, it continually cracked. The Proflex liquid seem to work well on roof seems.
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Old 12-17-2018, 03:13 PM   #13
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Which one did you use?
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Old 12-18-2018, 03:38 PM   #14
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Which one did you use?
I am unsure if you are asking me or another person from this thread. I am yet to seal anything on my RV. This is our second season with our Class C. It was resealed rather extensively last summer after I found a leak in the overhead cab. I plan to use the products referenced in this thread.

I initiated my post due to concerns of having to remove the current silicone sealant when I make a future repair.
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