Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 06-26-2014, 07:56 PM   #1
Join Date: Apr 2014
Location: Pittsburgh, PA
Posts: 54
What is the coating on my vintage C's roof?

The 1977 Elkhart Class C I bought a few months ago has some sort of funky coating painted all over the metal skin of the roof. It is a chalky greyish white substance, looks like dried mud smeared all over and it is cracking around the rooftop protrusions like the AC unit and TV antenna base. The roof has a leak near the rear of the AC (i can feel the soft spot in the ceiling.) Can anyone tell me what this stuff is and what I can do about it? I doubt it is removable -- what would stick to it that I could use to recoat and seal the cracked areas? Or am I looking at having to tear off the whole roof and replace it with new metal and some sort of rubber sheeting? I have a bunch of 4" single-side Eternabond, but I can't imagine it would adhere to this mess. I will try to get some photos of it tomorrow to post.

If I had seen how bad this roof looked, I probably would not have bought the thing, but I'm too far down the road with it now, having rebuilt and re-skinned the entire cabover section.

Willowleaf is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-26-2014, 08:19 PM   #2
Senior Member
MartySQ's Avatar

Vintage RV Owners Club
Join Date: Mar 2012
Location: Kansas
Posts: 4,316
Hi... I had much the same situation on my vintage '88 Honey.
I finally this year tackled it because we sprung a leak. I ended up buying a multitool (kind of like a vibrating scraper) and hired my son to climb up there and scrape all that gunk off... I didn't think it would come off, but the roof was aluminum underneath it with fiberglass sides, so it worked out ok... took him several days to get it finished to the point where it was clean enough to do something with. We then put eternabond on it. It got the leak. After the eternabond, we caulked with Dicor. Eventually I will paint snowcoat on it to help keep it cooler when we are boondocking in the summertime where there isn't any shade.

He had to sharpen the scraping blade a couple of times during the process because it would get dull pretty quickly.

Good luck. You may not need a new roof, but you certainly need to fix the leak and repair the damage it has caused underneath. Sometimes, the drain for the condensation gets plugged and the water must go somewhere... if it dips a little there, it could pool there and if the caulk or sealant was cracked it might have worked it's way inside.

Martha (AKA RVM45), Bob, and Bess the Border collie
22'Honey Sportscruiser on a 1988 Ford Econoline.
Sometimes towing a powered Parachute or a yellow Jeep Wrangler.
MartySQ is offline   Reply With Quote
Old 06-27-2014, 05:43 AM   #3
Join Date: Apr 2014
Location: Pittsburgh, PA
Posts: 54
Thanks, Marty!

Wow, what a useful and quick answer! I actually do have one of those oscillating multi-tools (from Harbor Freight) and a bunch of various scraper blades for it. Wish I had an energetic son to do the work, so I guess that job falls to me.

I appreciate the tip on the AC condensate drain too, it makes sense.

the project will have to wait until this rainy spell ends. i have no garage and the RV has to sit outside with a tarp bungeed over it.

I figure I will have to cut open that soft section out in the ceiling to dry it out - hope it doesn't have structural rot and termites like the cabover framing did.
Willowleaf is offline   Reply With Quote

vintage, roof

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coating EPDM rubber roof johnmark iRV2.com General Discussion 4 06-09-2014 04:34 PM
Roof Coating Suggestions? Pa Uon Tiffin Motorhomes Owners Forum 2 05-01-2014 04:37 PM
Roof Coating tluehrs Class A Motorhome Discussions 4 03-20-2014 06:10 AM
Dicor or Liquid Roof Coating Modela Class A Motorhome Discussions 6 10-19-2013 05:50 PM
roof coating '89 Gulfstream maneddi MH-General Discussions & Problems 5 06-26-2013 03:34 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:26 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.