Thread Tools Display Modes
Old 08-13-2018, 08:05 PM   #1
Junior Member
Join Date: Jun 2012
Posts: 2
Removing Underpinning

We have a 2005 Grand Surveyor, with the totally enclosed underpinning. We need to get in there to work on the bathroom plumbing. Would appreciate advice on removing and replacing the underpinning.

Lydia is offline   Reply With Quote
Old 08-14-2018, 06:41 AM   #2
Senior Member
SeaDog's Avatar
Join Date: Jan 2016
Location: Idaho
Posts: 5,779
If you are only working on the plumbing in one area you may find it easier and faster to just cut the coroplast in a "U" shape to gain access and when the work is complete refasten it with foil tape. Make the attached portion of the "U" is facing forward.

Retired Navy
Jake my sidekick (yellow Lab)
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
SeaDog is offline   Reply With Quote
Old 08-14-2018, 08:25 AM   #3
Fulltime family RVer
ependydad's Avatar
Join Date: Nov 2011
Posts: 18,767
But, to drop the underbelly... it’s either screwed in place or they’ve also been known to use some kind of expanding nails.

If it’s the former, just unscrew all 7,000 of them to get access that you need.

If it’s the nails, just start worshipping Satan.
2018 Ram 3500 DRW/crew cab/long bed/4x4/4.10 gears pulling a 2017 Spartan 1245 by Prime Time
Checkout my site for RVing tips, tricks, and info | My family and I have fulltimed since June 2015
ependydad is online now   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 Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:57 AM.