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10-14-2014, 01:31 PM
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#1
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Junior Member
Join Date: Oct 2014
Posts: 2
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Fiberglass Roof
I have a 2011 Thor Challenger and have found soft spots on the fiberglass roof. I found one, which is the bigger spot, by stepping on it while cleaning the roof. It was like a crunching sound and feel. Can someone please tell me if you have experienced this and what it could be caused from? Can it be repaired, or what I can do without replacing the roof?
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10-14-2014, 03:01 PM
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#2
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Senior Member
Solo Rvers Club
Join Date: Jul 2014
Location: Ham Lake, MN
Posts: 3,038
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Glad you're aboard. IMO May be dry rot caused from a leak. Best of luck on a solution. Enjoy your adventures and be safe.
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Have a wonderful day!
Ken (RVM 87)
FT DP Wanna B The journey is the destination!
Retired & perfecting procrastination! 
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10-14-2014, 05:14 PM
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#3
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,785
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Hi Frank! Welcome to IRV2! It's great to have you join the gang! 
Flexibility in a fiberglass roof is not uncommon, though I'm not sure about your brand. I would check with the manufacturer tech support on this.
Good luck, happy trails, and God bless!  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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10-14-2014, 11:58 PM
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#4
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Community Administrator
Fleetwood Owners Club Workhorse Chassis Owner
Join Date: Sep 2010
Location: Marquette, Michigan "Da UP" & Lehigh Acres Florida
Posts: 21,827
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Good luck with a solution.
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John & Cathy R.
06 Pace Arrow 38L Workhorse W24
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10-15-2014, 12:40 PM
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#5
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Senior Member
Appalachian Campers
Join Date: Sep 2002
Location: Dixie !! (north Georgia) USA
Posts: 4,114
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Are you sure the roof is fiberglass?
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10-15-2014, 04:03 PM
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#6
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Senior Member
Join Date: Feb 2011
Posts: 188
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Thor does not offer a fiberglass roof on the challenger. It is a tpo roof the crunching is the insulation between the metal joists cracking
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10-16-2014, 06:23 PM
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#7
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Senior Member
Country Coach Owners Club Retired Fire Service RVer's
Join Date: Feb 2013
Location: Ocala, Florida
Posts: 6,295
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 Welcome and glad to meet you!
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FMCA #F431170, GS #822128658, Escapees SKP #112655
2012 Airstream Mercedes Interstate Class B
[SIGPIC][/SIGPIC]
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10-17-2014, 09:53 AM
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#8
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Junior Member
Join Date: Oct 2014
Posts: 2
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Quote:
Originally Posted by davdamon
Thor does not offer a fiberglass roof on the challenger. It is a tpo roof the crunching is the insulation between the metal joists cracking
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I spoke to a representative with Thor RV Company and did find out it is a Dicor rubber roof. The crunch sound is most likely the quarter inch plywood the rubber sheeting is attached to. We have no tears in roof, still looks new so don't think it is a water leak. Probably weight issues from walking on weak plywood??? Was told to get foam sheet to lay on roof to distribute weight when walking up there. Thanks for your responses!
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10-17-2014, 12:09 PM
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#9
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,704
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The EPDM rubber is laid over plywood and glued to it, so there should not be any crunching sounds. Assuming you weigh less than 300 lbs, that is. If it is weak enough to make crunching noises, I suspect you already have some water damage underneath. The roof material can be fine, but water can still enter in dozens of places, along seams and around vent, skylight and a/c openings, etc.
In the short term, you can cut some 1x1 ft plywood squares to use like snowshoes when you have to walk on the roof. Even 1/4" plywood is enough to spread the load.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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