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Old 08-05-2014, 06:47 PM   #1
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Default Exterior Caulk

Hi, All:

Pardon me if this is off-topic, but my wife and I recently recently purchased a 2003 Class B R-Vision Trail-Lite with a Chevy engine. Last week, in talking to a dealership repair person, he suggested that we re-seal the "caulk line on the exterior of the vehicle that is even with the floor line.

I checked some stores, and it appears the best product might be using clear Dap caulking from Menard's and a caulking gun.

As you know, there is also a "Flexshot" product advertised on TV, but some on the Internet have questioned the cost of that product vs. the sealant described above.

Any thoughts or help would be greatly appreciated.



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Old 08-06-2014, 02:51 AM   #2
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Default Re: Exterior Caulk

I split this post from the Spray Foam topic.

I'd suggest checking with RV shops or dealerships and find out what caulk they use and / or recommend. Your Trail-Lite is built more like a Class C motorhome than a Class B campervan. Class B's typically have the original van sidewalls so there isn't as much need for the exterior caulking you find on typical Class C's.

Myself, I wouldn't use household type products. I had an '04 or '05 Trail-Lite and remember that it had a lot of exterior seams that were caulked. The caulk looked and felt like it could have been a silicone type product because it was like clear rubber. I haven't had much success with silicone based products on RV's so I avoid using it. It always seems to eventually start peeling.

If your Trail-Lite is similar to what I had then you`ll need a caulk that adheres well to automotive paint.

I used Geocel Proflex RV caulk (clear) for the few repairs I did on visible sidewall areas based on a suggestion from an RV shop. I didn't use the product long enough and/or keep the RV`s long enough to know how long the product/repair lasts though.

Two bikes on sliding cargo box: & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications:
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Old 08-06-2014, 12:47 PM   #3
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Default Re: Exterior Caulk

Trail Lite is a Class C, and lots of owners in the Class C forum, sub category "B+"
You will get a lot of help over there. A b+ is really a Class C.
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Old 08-06-2014, 07:02 PM   #4
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Default Re: Exterior Caulk

I contacted Roadtrek not too long ago on the same subject. They told me that they use 3M 755FC Hybrid Sealant. Unfortunately I haven't been able to find it here, but you might have more luck.

William Jones
2000 Chevy Roadtrek 200
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Old 08-06-2014, 08:06 PM   #5
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Default Re: Exterior Caulk

3M 755 FC

Amazon shows it in a couple of different container types. Not even horribly priced.
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