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Old 03-26-2014, 03:54 PM   #1
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Question What sealant does Jayco/Starcraft use outside?

Does anyone know what type of sealant is used on the external fittings, especially the tail light assemblies?

From what I can tell, it's a clear, fairly firm material that cures to an almost matt finish. It's harder than silicone and I would like to know what it is.

On my 2013 Starcraft 266RKS, I can clearly see it sealing the topside of the rear light assemblies where they contact the body of the trailer. It's applied in a semicircle, at the top, like a water diverting "dam".

Anyone know?
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Old 03-26-2014, 05:03 PM   #2
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I don't know what that brand of sealant is, but I can recommend a good clear sealant (that is not silicone): Proflex clear. I've had some in place for about two years, and it is in good condition.
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Old 03-26-2014, 07:51 PM   #3
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I called Jayco about the roof and they said Dicor was what they used.
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Old 03-27-2014, 01:43 AM   #4
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I called Jayco about the roof and they said Dicor was what they used.
Dicor it is !
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Old 03-27-2014, 08:59 AM   #5
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Is it okay to use Dicor around the bathroom vent on the roof? I am going to install a Fantastic Fan Vent Cover and I need to expose 4 screws that are in the seal around the existing vent. I want to reseal them when I install the new cover. I have a Alpha roof so is Dicor okay or should I use Proflex sealant?
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Old 03-27-2014, 09:23 AM   #6
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From what I've read, it's Dicor for the roof, and Proflex for the fixtures in the walls (like lights and plugs and storage doors...)

If you use Dicor on a vertical surface, will it not just run off? It's supposed to be self-leveling, but that only really works on a horizontal surface, right?

That's my plan anyway. I already have a tube of Dicor for the roof, and will order a tube of Proflex for the rest...
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Old 03-27-2014, 10:06 AM   #7
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Alpha seems to have their own sealant:

Apply a generous amount of Alpha Systems 1010 Sealant over the top of any existing caulk in the area being re-sealed.

They also make a "traditional' EDPM rubber roof and use the same sealant. I'd look for the Alpha brand material and use it to be consistant. It may be 100% the same as the Dicor material, but do you really want to have to explain why you did not use Alpha if it all goes south?
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Old 03-27-2014, 10:08 AM   #8
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I've used Dicor before and it does self level. I would NOT use it on a verticle surface!
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Old 03-27-2014, 10:31 AM   #9
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Originally Posted by Camper_bob View Post
snip....If you use Dicor on a vertical surface, will it not just run off? It's supposed to be self-leveling, but that only really works on a horizontal surface, right?.....snip
Yes.., Dicor 501 LSW caulk is for horizontal surfaces (Self-Leveling/Lap Sealant).

Dicor makes a specific caulk for vertical surfaces: Dicor 551-LSW (white) Non-Sag/Lap Sealant for Vertical Surfaces. It also comes in Dove, Grey, and Tan.

https://dicorproducts.com/catalog/ro...-lap-sealants/

Bob
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Old 03-27-2014, 03:37 PM   #10
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I have used the Proflex for RV windows, etc and boat applications. I can say that is tough stuff!
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