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 04-24-2019, 09:39 PM   #1
Winnebago Camper
 
Join Date: Apr 2019
Location: Jonesboro, AR
Posts: 7
Subfloor

Can anyone tell me what to expect on the flooring of my 1998 Winnebago Adventurer 35? My floor has been spongy on an 18Ēx30Ē section in front of fridge. Iíve located and fixed the leak, so now Iím thinking about fixing the soft spot. I figure Iíll take circular saw and cut the bad section out. Will the floor have wooden frame? Aluminum? A couple layers? I can look under fridge and see there is plywood on top, since the linoleum doesnít cover parts that arenít seen under there. Iím just not sure if there will be more layers. I was hoping someone on here has done this job before. Thanks for any/all input.
Brandon1078 is offline   Reply With Quote
Old 04-25-2019, 07:06 AM   #2
Winnie-Wise
 
SLOweather's Avatar
 
Join Date: Nov 2018
Posts: 433
Look around inside of cabinets (remove the bottom if necessary), up inside basement storage etc and somewhere you should find a floor penetration for plumbing or wiring that will help you see the floor construction.
__________________
2014 Sunstar 31KE
1988 Suncruiser 31 RQ
1968 Travco 210
SLOweather is offline   Reply With Quote
Old 04-25-2019, 08:01 PM   #3
Winnebago Camper
 
Join Date: Apr 2019
Location: Jonesboro, AR
Posts: 7
Thank you sir...it looks to have styrofoam directly under the plywood. I asked someone about that and they told me you can't tear this kind out...you have to build on top...why could I not cut out a 18"x30" section and replace the plywood and styrofoam? Isn't the styrofoam there to just cushion your steps...allow some "give"?
Brandon1078 is offline   Reply With Quote
Old 04-25-2019, 10:43 PM   #4
Winnie-Wise
 
SLOweather's Avatar
 
Join Date: Nov 2018
Posts: 433
The RV floor, wall and roof construction is a plywood/foam sheet/plywood (or fiberglass for roofs and walls) sandwich construction. The "sandwich" is what gives it strength. The thin outer plywood sheets or skins are like membranes in tension and compression, given strength by the foam core. In building construction, they would be called SIP, structural insulated panels. Anything which majorly impacts the integrity of the skins affects the strength of the sandwich. The floor system is probably screwed to a metal frame.



It's rather like plywood in theory. The strength of the glued up plies is more than the strength of the individual plies added together.


As noted, the best way, IMO, to fix your floor is to overlay a patch of plywood that extends several inches past the bad section on all sides, gluing liberally with something like Gorilla Glue. Done carefully, and filled and sanded carefully, it shouldn't be too noticeable, depending on the thickness of the patch.



I suppose there are other ways to fix this. Others may weigh in.
__________________
2014 Sunstar 31KE
1988 Suncruiser 31 RQ
1968 Travco 210
SLOweather is offline   Reply With Quote
Old 04-27-2019, 06:35 PM   #5
Winnebago Camper
 
Join Date: Apr 2019
Location: Jonesboro, AR
Posts: 7
Thank you. Iíll wait and see if anyone has any other opinions before I tackle the job
Brandon1078 is offline   Reply With Quote
Old 05-05-2019, 05:40 PM   #6
Winnebago Owner
 
wmckinley's Avatar
 
Join Date: Mar 2012
Location: Cleveland, Oh
Posts: 121
x2 on SLOweather response. On a previous coach I had the same problem. My resolution was a little different. I laid down 3 layers of 6 oz fiberglass cloth extending 6 inches outside of the soft area. Using EPOXY resin ( can't use polyester resin as it will melt the Styrofoam) You laminate it just like building a part. Coat of resin, layer of cloth, roll it to get the bubbles out, rinse repeat, Do it all in one continuous operation. Floor ended up solid as a rock after cure.

If you can get to the other side of the floor, do the same process. Like SLOweather said, it is only structurally sound when sandwiched properly.
__________________
Bill: 2007 Sightseer 35J Ford V10
wmckinley is offline   Reply With Quote
Old 05-05-2019, 06:34 PM   #7
Winnie-Wise
 
SLOweather's Avatar
 
Join Date: Nov 2018
Posts: 433
Thanks for the validation, wmckinley. I like your fiberglass solution.
__________________
2014 Sunstar 31KE
1988 Suncruiser 31 RQ
1968 Travco 210
SLOweather is offline   Reply With Quote
Old 05-05-2019, 09:14 PM   #8
Winnebago Owner
 
wmckinley's Avatar
 
Join Date: Mar 2012
Location: Cleveland, Oh
Posts: 121
Using the fiberglass ends up with a thinner patch. Bonus
__________________
Bill: 2007 Sightseer 35J Ford V10
wmckinley is offline   Reply With Quote
Reply


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


» 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 03:49 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×