RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-02-2021, 08:16 AM   #1
Winnebago Camper
 
Join Date: Dec 2018
Location: Avon, IN
Posts: 12
Milky water streaks off roof

Rain water that runs off the roof of my Winnie Journey Express leaves milky white streaks on my paint and windshield. Why is it milky? Is there some maintenance I should do to the roof?
llcrooks is offline   Reply With Quote
Old 01-02-2021, 08:49 AM   #2
Site Team
 
creativepart's Avatar
 
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 3,308
Your RV’s roof requires regular cleaning and inspection. Many of us also apply a protective application of wax or some UV shield product.

The items on your roof take the brunt of nearly constant UV exposure. As a result, sealants and caulks age, crack, and shrink, causing leaks. Plastics become thin and brittle which also can lead to leaks.

Yearly roof inspections are a minimum necessity but many inspect their RV’s roof quarterly or monthly.

The white streaks are probably oxidation from the filon roof material telling you to wash your roof.
__________________
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
creativepart is offline   Reply With Quote
Old 01-03-2021, 08:12 AM   #3
Winnebago Owner
 
Cataska's Avatar
 
Join Date: Oct 2017
Posts: 126
Could also be layers of dust warshing off if you dont keep it clean.
Cataska is offline   Reply With Quote
Old 01-04-2021, 01:13 PM   #4
Winnebago Owner
 
Join Date: Dec 2020
Posts: 20
Happy New Year

It does sound like oxidation. Looked up Avon, you also have a lot of trees. In southern IL. my troubles are farm dust and tree pollen. Keep it clean and waxed. Hope it helps.
SoCo40 is offline   Reply With Quote
Old 01-04-2021, 05:11 PM   #5
Winnebago Camper
 
Join Date: Dec 2018
Location: Avon, IN
Posts: 12
I’m afraid to wax it because that could make it slicker for me when I get up there. Is there a non-slippery wax?
llcrooks is offline   Reply With Quote
Old 01-05-2021, 09:03 AM   #6
Winnebago Owner
 
Join Date: Dec 2020
Posts: 20
Not that I know of. Might just start with a good washing.
SoCo40 is offline   Reply With Quote
Old 01-10-2021, 05:38 PM   #7
Winnebago Owner
 
DGundy's Avatar
 
Join Date: Feb 2017
Location: Lexington County, South Carolina
Posts: 53
I purchased a gallon of Formula 303 for the roof. They also make a Formula 303 Tire Balm for your tires. These products protect against UV damage.
DGundy is offline   Reply With Quote
Old 01-10-2021, 07:18 PM   #8
Winnebago Owner
 
Join Date: Sep 2018
Posts: 76
We had a protective sealant applied to our roof last year. This year we still have a milky runoff, so it's unlikely ours is oxidation; more likely caused by sealant deterioration.
__________________
2014 Itasca Meridian 34B
Cummins 340HP
R2D2 is offline   Reply With Quote
Old 01-11-2021, 12:37 AM   #9
Winnie-Wise
 
Journey39n's Avatar
 
Join Date: Jul 2010
Location: on a constant, around the country, trip!
Posts: 352
My personal belief is you don't need to do anything extraordinary. I just use a brand name automotive wash & wax soap, to wash the outside and roof of my Journey Express, perhaps washing it twice a year.

Except for the front for bug removal, (and that has diamond coat), I have never waxed the RV. Been in lots of sun and rain, plus all over the country in all sorts of conditions.

Works great, looks great, always getting complements that the RV looks new. Never have had any issues. The white streaks seem to appear after slight rainfall or heavy dew, only occasionally, but after a hard rain they go away. That leads me to believe it is just dust being washed off.

But then the rig is mostly gray and silver with some black and crimson swirly stripes, might not show the white streaks as much as on your rig. I have only owned this rig for just over 10 years, so perhaps others know much more than me.
__________________
2010 Journey 39n - 2017 Jeep Cherokee Trailhawk - in our 11th year living aboard, parked near the Rio Grande in Texas for the winter season, still waiting for the virus to pass by!
Journey39n is offline   Reply With Quote
Old 01-11-2021, 07:02 AM   #10
Winnebago Master
 
Join Date: Nov 2005
Posts: 1,353
Quote:
Originally Posted by R2D2 View Post
We had a protective sealant applied to our roof last year. This year we still have a milky runoff, so it's unlikely ours is oxidation; more likely caused by sealant deterioration.

If they didn't do a good job cleaning up the old oxidation the new sealant coat often won't last even a full year. I will use PolyGlow to seal the roof every few years or so after giving it a good going over with a light duty floor scrubber. The roof on a Winnebago is just like the rest of it and will oxidize just like a fiberglass boat left out in the sun without regular washing and waxing.
__________________
Neil V
2001 Winnebago Adventurer WFG35U
NeilV is online now   Reply With Quote
Old 01-11-2021, 07:13 AM   #11
Winnebago Camper
 
Join Date: Jul 2019
Posts: 17
According to Winnebago

On my 2015 Winnebago Forza it became obvious that the white streaking was coming from the white, bare portions of the roof. Worse, scrubbing the roof actually seemed to make the situation worse.

I searched online for info. I called Winnebago.

Winnebago said the white roof is fiberglass. If white is washing off of it, it is oxidized fiberglass. The gel coat is gone.

It amazes me that Winnebago did not paint the roof to protect the gel coat and fiberglass.

People talk about waxing the roof for protection. I think it needs to be painted or treated with some coating to protect it. Luckily, the white area is not visible from the ground. So you can paint it with a brush or roller or whatever.
calendarboy is offline   Reply With Quote
Old 01-11-2021, 09:23 AM   #12
Site Team
 
creativepart's Avatar
 
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 3,308
Actually, there is no gelcoat on Winnebago roofs. The roof material is Filon. The same stuff that’s on the sidewalls of your RV.

It is fiberglass reinforced plastic but not a fiberglass/epoxy layer with a gelcoat surface.

The top surface of the Filon can oxidize so waxing or UV coating can help, just like on the sides of your RV. But it’s not particularly long lasting in the sun and rain.
__________________
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
creativepart is offline   Reply With Quote
Old 01-13-2021, 06:34 PM   #13
Winnebago Owner
 
Join Date: Sep 2018
Posts: 76
Quote:
Originally Posted by NeilV View Post
If they didn't do a good job cleaning up the old oxidation the new sealant coat often won't last even a full year. I will use PolyGlow to seal the roof every few years or so after giving it a good going over with a light duty floor scrubber. The roof on a Winnebago is just like the rest of it and will oxidize just like a fiberglass boat left out in the sun without regular washing and waxing.
Agreed, we have it done yearly. We don't use a floor scrubber, but rather an automotive buffer.
__________________
2014 Itasca Meridian 34B
Cummins 340HP
R2D2 is offline   Reply With Quote
Reply

Tags
water, 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
Elastomeric roof coatings on Winnie fiberglas roof moabdds General Maintenance and Repair 33 03-28-2020 11:30 PM
Roof Repair or new roof RD Eagle General Maintenance and Repair 25 10-11-2019 08:43 AM
Roof issues? What to look for in a roof inspection? Fasttimes Winnebago Travel Trailers 1 07-26-2018 08:39 AM
How to add water to water tank without using city water fill Laker44 Plumbing | Systems and Fixtures 22 11-18-2014 09:54 AM
roof water streaks pawpawboyce General Maintenance and Repair 18 06-14-2011 07:03 PM

» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 11:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
×