Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Display Modes
Old 06-08-2020, 01:52 PM   #1
Silver Member
Join Date: Sep 2019
Location: California
Posts: 56
Default Help with caulk question

Does anybody know what type of caulk or seam sealant might have been used between the metal body and fiberglass roof of my 200 Versatile Roadtrek? It looks to my untrained eye like butyl something. I think it used to be white. It's cracked but still somewhat flexible. Something similar is also used at the side door joints where the fiberglass body meets the van body. Thanks!

Average_alice is offline   Reply With Quote
Old 06-23-2020, 08:21 PM   #2
Silver Member
Join Date: Sep 2019
Location: California
Posts: 56
Default Trying this one

Since I didn't receive any responses I'm going out on a limb and using 3m 4000 UV which is marketed for boat owners. There's a little bit of rust action starting in this area which it sounds like the older vans can get. Beneath the temporary top layers of caulk that had been applied by who-knows-who (we bought this RV used) there was a yellow, strong, partially-crumbling gap filler which still had some elasticity since you could dent it with a fingernail just a little bit. I'll just assume it's a urethane caulk of some sort. I'm not sure if the 3m 4000 will stick to that but it is extremely gooey and sticky out of the tube so I'm hopeful. If not it can be removed.

My local RV repair shop receptionist lady recommended Dicor non-sag formula for vertical seam sealing. I purchased a tube and didn't like the fact that you could put permanent indentations in the cured Dicor with just a fingernail. The 3M 4000 cures more like a dense rubber but not as shiny as silicones. The Dicor seemed weak to me. I also bought a tube of Proflex RV, which looked and felt more like a typical silicone (althought it's supposedly different). The 3M 4000 looked like it would be more difficult to remove and I'm hopeful that this translates into greater longevity.

Average_alice is offline   Reply With Quote
Old 06-23-2020, 10:34 PM   #3
Platinum Member
rowiebowie's Avatar
Join Date: Jul 2018
Location: Texas
Posts: 2,283

Sounds like you've researched and bought a high-quality sealant. Just make sure to read the instructions, clean the surface as directed, and you should be ok.
rowiebowie is offline   Reply With Quote
Old 06-23-2020, 10:47 PM   #4
Platinum Member
Join Date: Nov 2014
Location: PHX, AZ
Posts: 1,759

please post back with results-

I used a product some years ago, which seals fine but stayed tacky for weeks-

we had an Arizona Haboob dust storm and the fine red grit stuck to the sealer

mkguitar is offline   Reply With Quote

body seam, caulk, sealant

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 10:30 PM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.