RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Winnebago Industries Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 11-18-2019, 07:08 PM   #1
Member
 
Join Date: Aug 2019
Location: Land of high fuel prices and poor roads; Kalifornia
Posts: 41
Clean Fiberglass Roof???

I am in the process of polishing and sealing the exterior paint on my Class A RV. However, that white chalky stuff from the fiberglass roof keeps going down the sides of my RV.


So how do I:
  1. Clean/remove the existing white stuff on the roof? Power washer? etc.?
  2. Seal or otherwise protect the fiberglass roof so it doesn't immediately start chalking up, again? I am thinking some kind of car wax/sealant, but I have heard it makes your roof really slippery.
Frankly, I don't care how the roof looks, I just want to stop that white stuff from going down the sides of my RV. After a good wash, can I just apply some sealant like NuFinish and not even bother to remove it?
__________________

__________________
On our Nth motorhome. Currently: 2007 Winnebago Journey 34H Diesel Pusher
dmevis 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 11-18-2019, 09:33 PM   #2
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 17,969
Clean the roof, then paint with Henry's.
__________________

__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Ray,IN is online now   Reply With Quote
Old 11-18-2019, 09:42 PM   #3
Senior Member
 
1doodadd's Avatar
 
Join Date: Dec 2016
Location: So Cal
Posts: 974
What you are talking about is Oxidation of the old roof coating. I just did a complete roof reseal and repaint on my coach. I used Simple Green to remove the grease and all contaminates by mixing by the mfg recommendations on 1 gallon bottle. After I washed it to what I wanted for clean I the used Scotch Brite 3M red pads to sand the whole fiberglass roof. YES the whole roof. I attached the pads to my drywall sander pole so I could stand up and sand the roof an not work on my knees. This will produce A lot of powder so have an air hose handy.

After sanding I resealed all my vents with Eternabond tape and dicor self leveling under the tape. I then used Rust Oleum Marine top Side Gloss white paint, 2 coats, Yes 2 coats. Since I put that much time in it I wanted the best coverage.. Used just under 1 gallon for my coach.. Pic of finished product
Attached Thumbnails
Click image for larger version

Name:	thumbnail_IMG_0512.jpg
Views:	9
Size:	149.7 KB
ID:	267325  
__________________
2000 42' BEAVER MARQUIS AMETHYST w/tag 2 SLIDES CAT C12 425 hp ALLISON HD 4060 HURRICANE HEATER ONAN 10000 kw
1doodadd is offline   Reply With Quote
Old 11-18-2019, 09:48 PM   #4
Senior Member
 
rarebear.nm's Avatar


 
Excel Owners Club
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Aug 2014
Location: Santa Fe, NM
Posts: 3,005
Nice job. Are there any experiences after using a coating similar to these with using 3M VBS tape to attach solar panels? Did you scrape the coating off or just trust the strength of the coating bond to the underlying fiberglass?
__________________
Fred & Denise (RVM157) New Mexico
2007 Excel Classic 30RSO & 2015 Mini Winnie 22R
2007 RAM 3500, Diesel, 6Spd Auto, SWD, 4x4, CC & LB
rarebear.nm is offline   Reply With Quote
Old 11-18-2019, 09:49 PM   #5
Senior Member
 
powercat_ras's Avatar
 
Winnebago Owners Club
Solo Rvers Club
Join Date: May 2015
Posts: 1,332
I think you'll get streaks due to pollution (I think mostly diesel semi-truck exhaust residue) depositing on the roof and washing off whenever it rains no matter what you do. At least I do. I have not had chalking issues but here's my routine ...

On my 2015 Vista I clean the roof a few times per year with soapy water using some bug/tar remover and/or Goof-Off to remove stubborn things like tree sap. I don't try to get the pollution off the lap sealant anymore. I damp dry with a few old towels to get remaining oily diesel soot pollution residue off the roof. About once a year I hand apply and hand buff using the same wax I use on the sidewalls and front/rear caps. The wax layer seems to seal the gelcoat and prevent the chalking and seems to last about a year before I have to repeat.

At least for me it's about going over the whole roof a few times a year to make sure there's no problems that need to be addressed that would lead to water intrusion or something coming off suddenly.
__________________
Randy - Manhattan, Kansas
2015 Vista 27N
2016 Honda HR-V
powercat_ras is offline   Reply With Quote
Old 11-18-2019, 11:46 PM   #6
Senior Member
 
Duner's Avatar
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Jul 2002
Location: Fulltiming now in- Desert Hot Springs, CA
Posts: 1,397
My Winnie will be 16 yrs old next month since I took delivery. For many, many yrs I used 303 Protectant approx twice a year on the roof and tires and rubber trim on windshield. It went on easy and stopped the white streaks for a while. Last year I had a professional detail the entire rig. He recommended a "hard wax" and said 303 would only last about 6 weeks. So I sealed the roof with RejeX, the same polish I've used on the paint since 2007. After 1 year, there are no white streaks and it's very easy to clean. It will be slippery when wet, so if I go up there, I wait til the dew dries. OBTY, folks complement me how well the coach looks and don't believe that it's 16 yrs old. It's almost always in the sun 24/7/365 since I've been fulltiming since 2007.

Good luck,
Bill
YIKES! ... on edit, I see they can't sell this product in Kalifornia, seems all the good stuff is outlawed here. That was news to me since I've had 1 gal container shipped here twice, last time in 2017.
__________________
Bill & Helen & Bella (Yorkie/Chihuahua Mix)
Last of the Chieftains, 2004 39T, W22, UP tune, Banks, Koni's, Safe-T-Plus, SMI brake
2017 Lincoln MKZ Hybrid towed 4-down
https://www.irv2.com/attachments/signaturepics/sigpic23522_1.gif]
Duner is offline   Reply With Quote
Old 11-19-2019, 12:31 AM   #7
Member
 
Join Date: Aug 2019
Location: Land of high fuel prices and poor roads; Kalifornia
Posts: 41
Quote:
Originally Posted by rarebear.nm View Post
Are there any experiences after using a coating similar to these with using 3M VBS tape to attach solar panels?
Wow. I had not even thought about that. I will installing solar panels in the next few months, and will be using 3M VHB tape.
__________________
On our Nth motorhome. Currently: 2007 Winnebago Journey 34H Diesel Pusher
dmevis is offline   Reply With Quote
Old 11-19-2019, 10:52 AM   #8
Senior Member
 
FIRE UP's Avatar


 
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 7,914
Quote:
Originally Posted by dmevis View Post
I am in the process of polishing and sealing the exterior paint on my Class A RV. However, that white chalky stuff from the fiberglass roof keeps going down the sides of my RV.


So how do I:
  1. Clean/remove the existing white stuff on the roof? Power washer? etc.?
  2. Seal or otherwise protect the fiberglass roof so it doesn't immediately start chalking up, again? I am thinking some kind of car wax/sealant, but I have heard it makes your roof really slippery.
Frankly, I don't care how the roof looks, I just want to stop that white stuff from going down the sides of my RV. After a good wash, can I just apply some sealant like NuFinish and not even bother to remove it?
Dmevis,
First off, how long has it been since ANY roof cleaning as been done, months, years? Second, ANY roof, no matter what it's made of, will eventually degrade if left UNMAINTENANCED! The exception being an all aluminum roof, they just get ugly but don't cause streaking. Third, do not, REPEAT, do not paint it with ANYTHING. It's a fiberglass roof.

All that is needed is a good, thorough cleaning. Do not be afraid to get up there and DO SOME WORK!!!! Nothing is easy when it comes to quality motorhome maintenance. Your roof, can take a good cleaning with a good quality brush, some soap and some cleanser. Yes, I said CLEANSER! The goal here is to get all those years (if it's been years) of NEGLECT scrubbed off. What you will have after that is a good, clean, ready to protect, fiberglass roof.

I did it that way, 7 years ago. We picked our coach up just over 8 years ago with 40K miles on it. It's an '04 Itasca Horizon 36GD with the CAT C-7 330HP and it was about 7 or so years old. It had never, ever had any roof I maintenance done on it. So, I got out the stiff brush, some dawn dish soap and CLEANSER and went to work. After about 30 minutes, that roof was crystal clean. After that, I went to work BUFFING IT, with a professional buffer, a wool pad, and 3M Rubbing compound. You see what it looks like after in the pics below.

That was 8 years ago and over 50K miles ago. I don't have one single streak coming down my full body BLue/Grey paint, when it rains, not one. The only steaking I get is due to dust or road dirt, 'cause we've been traveling. That's a given.

As for being slippery, well, DUHHHHHHHHH! No one says to get up there and have a dance party when it's raining. This is all common sense. Although some don't have that. Anyway, of course it's gonna be slippery when you're washing it. Geeeze, all you have to do is be careful. Duner (Bill) used 303 on his and, lots of folks use that stuff for multipurpose application when it comes to RVs. I've not ever really got into that stuff. But, some swear by it.

When mine was all done with the machine buffing, I used just some basic auto wax, KIT wax was what I used. Cheap stuff but, it lasted a while. The roof still looks good. NO STREAKS. Yes, it's work, but, all that work I did, was done in two days and, it's lasted for over 8 years. I'm about to do it all again.
Scott

P.S. Notice the reflection of the tubing for the cover over the RV, yeah, it shined!
Attached Thumbnails
Click image for larger version

Name:	IMG_0549.jpg
Views:	7
Size:	204.0 KB
ID:	267354   Click image for larger version

Name:	IMG_0552.jpg
Views:	5
Size:	186.9 KB
ID:	267355  

Click image for larger version

Name:	IMG_0555.jpg
Views:	11
Size:	116.2 KB
ID:	267356  
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '08 GL 1800 Gold Wing
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Sophie character, (mini Schnauzer)
FIRE UP is offline   Reply With Quote
Old 11-26-2019, 08:49 AM   #9
Senior Member
 
Park Super's Avatar
 
Winnebago Owners Club
Join Date: Dec 2016
Posts: 111
Just did our coach. Our roof was doing the same as yours. Oxidizing and running down the sides and windows making a mess of the whole coach. Anyway.....being a former fiberglass boat owner I knew just what to do and dreaded having to do it to our coach. I did invest in a new polisher, TCP global 7inch with hook and loop foam pads from Amazon. After a good washing I used a red pad with Meguiars Marine Heavy Duty Oxidation Remover on the roof followed by Marine Cleaner wax with a Orange pad on the roof and then the remainder of the coach. Took me about 5 half days to do the entire coach. This is the proper and only solution to care for oxidized gel coating. There are no short cuts and is labor intensive but our coach looks great!
Next time I will use the 3M Marine Restorer and Wax designed for heavy Oxidation and not wait so long. There is also a wash to remove oxidation but the gel coat will still have to be cut and waxed. Our coach is shinny just like FIRE UP,s.
__________________
Martin & Michelle and our dog Blue, Paradise, CA.
2016 Winnebago Vista LX 27N, Sumo Springs, Safe T Plus, SS rear track bar, Dish
2017 Equinox Premier AWD V6, Blue OX base and bar, SMI Stay and Play Duo
Park Super is offline   Reply With Quote
Old 11-27-2019, 03:59 PM   #10
Member
 
Join Date: Aug 2019
Location: Land of high fuel prices and poor roads; Kalifornia
Posts: 41
Gave in

O.K., in the end, I gave in and did the right thing. I polished the roof with an aggressive pad and course cut compound. Then I waxed it with NuPolish wax. It wasn't as hard or as lengthy a process as I thought it would be. Hopefully, this will take care of things for a while.
__________________
On our Nth motorhome. Currently: 2007 Winnebago Journey 34H Diesel Pusher
dmevis is offline   Reply With Quote
Old 11-27-2019, 07:17 PM   #11
Senior Member
 
Five2o's Avatar
 
Join Date: Apr 2010
Posts: 203
Lot of terrible advice here...wax the roof once a year like others have said.
Five2o is offline   Reply With Quote
Old 11-27-2019, 07:28 PM   #12
Senior Member
 
Join Date: Mar 2018
Posts: 150
I wax once a year
Attached Thumbnails
Click image for larger version

Name:	DSC01072.jpg
Views:	4
Size:	183.5 KB
ID:	268094   Click image for larger version

Name:	DSC01073.jpg
Views:	4
Size:	137.7 KB
ID:	268095  

__________________

the sights is offline   Reply With Quote
Reply

Tags
fiberglass, roof



Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
jerrybb
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
Brake Clean To Clean Rear Radiator G Schulz iRV2.com General Discussion 15 02-02-2019 06:49 PM
Dyed Fiberglass vs white fiberglass Unicorn Driver MH-General Discussions & Problems 10 10-08-2017 12:19 PM
Fiberglass Roof Clean and Seal Spk64 Class A Motorhome Discussions 48 10-16-2015 10:18 PM
How to clean and protect textured fiberglass roof zr1sparky Class A Motorhome Discussions 1 08-12-2012 07:54 AM
Caulk roof gutter seam for fiberglass roof Pap, Penna Winnebago Industries Owner's Forum 5 09-22-2007 04:50 PM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:13 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×