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

Go Back   Thor Forums > Thor Motorcoach & Motorhome > Class A Motor Coach
Click Here to Login
Thread Tools Display Modes
Old 08-09-2015, 09:03 PM   #1
mhbell's Avatar
Brand: Thor Motor Coach
Model: Four Winds Infinity R-32
State: Utah
Posts: 67
THOR #2474
Send a message via Skype™ to mhbell
Should TPO Roof Look Like This?

I just washed my TPO Roof on my 2006 four winds Hurricane 31D. I took pictures of the roof. Should it look like this. I used a mild soap and water to clean it. Does the black spots mean I need a new roof. It is not leaking.

2004 Thor Four Winds Infinity R32 F-53 Chassis Ford V-10 Toad is a 2017 Jeep Cherokee TrailHawk. My Blog: https://rvbloggers.wordpress.com/
mhbell is offline   Reply With Quote
Old 08-09-2015, 09:19 PM   #2
Site Team
Brand: Crossroads
Model: CF32BL
State: Mississippi
Posts: 1,003
THOR #121
No the black spots are normal, Try washing it with a liquid mixture, there are quite a few out there that will work well and not damage the roof.

Frank and Janet Henn
2008 CrossRoads CF32Bl pushing a 2007 Dodge 2500
Traveling with Hoover, Rainbow and Sunshine
The wonder Schnauzers
fhenn is offline   Reply With Quote
Old 08-10-2015, 01:12 AM   #3
Senior Member
Brand: Thor Motor Coach
Model: 2013 31L
State: Florida
Posts: 1,989
THOR #908
I don't think I would say "normal", but I doubt if its a problem
Probably just spots of some sort of dirt or mold

a lot of folks use spic and span, or laundry soap

maybe try a weak bleach solution if nothing else touches it... just rinse really really well and rinse the run-off too on the coach sides....

use a good scrub brush on a handle....

The key is finding the right cleaner for the whatever the dirt is....
your dirt is probably different than my dirt, so what works well for me may not cut your so well....
blw2 is offline   Reply With Quote
Old 08-10-2015, 04:39 PM   #4
Senior Member
Brand: Thor Motor Coach
Model: Hurricane 34E
State: California
Posts: 524
THOR #937
That's a good looking roof. Discoloration isn't going to harm it. Tree branches and low bridges will.

The spots are usually caused by mold from dead vegetation that was allowed to die there for a long time. A diluted mixture of water and bleach will make them disappear.

However, bleach can damage the TPO, so I'd just keep it clean, and sealed now that it's your's.
Beacher is offline   Reply With Quote

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


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

All times are GMT. The time now is 10:43 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2