Go Back   Keystone RV Forums > Keystone Tech Forums > Keystone Questions
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 04-16-2009, 07:25 PM   #1
Festus2
Site Team
 
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,004
Question Ceiling Discoloration Marks

We have a 2008 Cougar 5th wheel and have recently noticed a number of small and barely noticeable yellowish/brownish discoloration at points where the interior white textured ceiling panels have been fastened to the overhead rafters/joists.
I am sure that these ceiling panels have been stapled and some kind of white filler has been applied to fill in and hide the staples.
These stain marks are in a direct line and spaced fairly evenly apart - running across the ceiling from side to side. The more obvious ones are in the kitchen area but other ones are also beginning to show.
It would seem that the compound or filler that was used to hide the staples is reacting with the metal staple and producing some kind of chemical reaction which is resulting in the filler turning a light yellow/brown color. I am certain and it was confirmed by the technician that it is not a leak problem.
Upon checking with an Keystone RV dealer, I was told that this is not an uncommon problem and the stain marks might be removed by lightly rubbing it with a damp cloth and a mild detergent or cleaner.
I was also informed that the filler used becomes discolored by cooking "smoke", dust, and other airborne particles.
I am wondering if anyone else has experienced this and if so, what they have done to solve this problem. The one year warranty is, of course, expired. I havent yet contacted Keystone to see if they can offer any suggestions.
Any comments? Suggestions?
__________________

__________________
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
Festus2 is offline   Reply With Quote
Old 04-17-2009, 11:00 AM   #2
Flyguy
Senior Member
 
Flyguy's Avatar
 
Join Date: Mar 2009
Location: Alabama
Posts: 863
I have the same thing in a few spots but they are so small that I'm really not concerned with them, I expect that I'll see more of them as the trailer ages. I was told that the best thing to use for cleaning the trailer outside, and especially the rubber roof is Borax powder (20 Mule Team) in lukewarm water, I might try some of this on those spots.
__________________

__________________
2005 Springdale 249BH FW
2008 Toyota Tundra Crewmax 5.7L
Tow package
Timbrens
Flyguy is offline   Reply With Quote
Old 08-26-2009, 05:44 AM   #3
HermitKrab
Junior Member
 
HermitKrab's Avatar
 
Join Date: Aug 2009
Location: East Tennessee,USA
Posts: 11
I also have some discoloration in various areas of the ceiling as you described.
I was worried they might indicate a moisture problem, but glad to see that is not the case.
__________________
Fulltiming in a 2008 Keystone Springdale 266RELLGL
TV 2007 Silverado 2500HD 8.1L Vortec & Allison Transmission 5 Spd Auto.
HermitKrab is offline   Reply With Quote
Old 09-03-2009, 04:34 AM   #4
Umpie007
Junior Member
 
Umpie007's Avatar
 
Join Date: Aug 2009
Location: Wisconsin
Posts: 19
i have a 01 278efs fifth wheel and have the same thing. i keep thinking it's flypoop when i look up.....until i look closer.. i don't know what it is or how tho fix it
__________________
2001 Keystone Cougar 278efs,

2006 Chevy Duramax 2500HD, PPE Power Programmer, Pyrometer and Boost Guages, Custom Exhaust with LB7 Downpipe, EGR Block, PCV Reroute, Transgo-Jr Allison Transmission Kit, Cold Air Mod to Factory Air Box, Firestone Ride-Rite Airbags, Prodigy Brake Controller, B&W Turnover Ball with B&W Companion Hitch
Umpie007 is offline   Reply With Quote
Old 09-03-2009, 08:35 AM   #5
Festus2
Site Team
 
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,004
Umpie
The discolouration does not seem to be spreading or enlarging. I have tried various cleaning solutions - including Borax but the stain seems to be embedded right through. I am almost certain that these marks are caused by a reaction between the staple and the fill used to cover the staple marks. Also, I am also certain that they are not caused by leaks. It must be a water-based fill and the discolouration is rust caused by the reaction between the fill and the staple.

I have tried using Kilz in a small test area and it seems to have made a very slight improvement. The marks are barely visible. I am less bothered by them now than I was when I first noticed them. If I ignore them long enough, they may eventually go away.
__________________
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
Festus2 is offline   Reply With Quote
Old 09-03-2009, 01:48 PM   #6
hankpage
Site Team
 
hankpage's Avatar
 
Join Date: Jun 2009
Location: Jersey Shore - Nokomis, FL
Posts: 4,494
Mr Clean Magic Eraser removes them with just a gentle rub. I see why they call it magic.
__________________
Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
'07 Cougar Mods
hankpage is offline   Reply With Quote
Old 09-03-2009, 02:21 PM   #7
Festus2
Site Team
 
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,004
Hank
I will give Mr. Clean Magic Eraser a try. Does he come with the bottle and apply a "gentle rub" or do I have to do that?
__________________
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
Festus2 is offline   Reply With Quote
Old 09-03-2009, 04:00 PM   #8
hankpage
Site Team
 
hankpage's Avatar
 
Join Date: Jun 2009
Location: Jersey Shore - Nokomis, FL
Posts: 4,494
Actually I think he is too old for house calls, so you'll have to rub it yourself. It is a small white sponge ... just wet it and rub lightly.
__________________
Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
'07 Cougar Mods
hankpage is offline   Reply With Quote
Old 09-05-2009, 01:34 AM   #9
cpaulsen
Senior Member
 
cpaulsen's Avatar
 
Join Date: Apr 2009
Location: Oregon Coast
Posts: 171
Had the same thing in our Couger. I used a rag wet with Awesome Orange and the marks went away.
cpaulsen is offline   Reply With Quote
Old 09-08-2009, 08:07 AM   #10
sbebenelli
Member
 
Join Date: Aug 2009
Posts: 47
The Mr. Clean Magic Eraser works great on all sorts of things. I recommend having one around the house. You'll be amazed at what it can be used on.
__________________

sbebenelli is offline   Reply With Quote
Reply

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
Forum Jump

Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 10:49 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
This forum is owned and operated by Social Knowledge, LLC. It is not authorized or endorsed by the Keystone RV Company and is not affiliated with the Keystone RV Company or its related companies in any way. Keystone RV® is a registered trademark of the Keystone RV Company.