Bigfoot Ceiling Replacement - Page 2 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-03-2016, 10:02 AM   #15
Junior Member
 
Name: Tom
Trailer: Bigfoot
California
Posts: 18
Registry
Quote:
Originally Posted by cechardy View Post
I started on this project today, and it turns out, there are no support "rafters" in this unit? The ceiling consists of only styrofoam glued to the fibreglass and panels glued to that. This should make this job a lot easier than anticipated!


Sent from my iPad using Fiberglass RV
good luck/skill, and post up pics!!!
__________________

__________________
bigfootlefty is offline   Reply With Quote
Old 09-03-2016, 10:05 AM   #16
Senior Member
 
Donna D.'s Avatar
 
Name: Donna D
Trailer: Escape 5.0 TA, 2014
Oregon
Posts: 24,362
Quote:
Originally Posted by Lee Senn View Post
I found it now if I can just post the link Bigfoot sagged roof restoration. Well couldn't get the link to post but go to the home page click on Bigfoot and page down about 20 or so post and you will find " Bigfoot sagged roof restoration" posted 7 31 2016 . Lee
Direct link: Bigfoot sagged roof restoration
__________________

__________________
Donna D.
Ten Forward - 2014 Escape 5.0 TA
Double Yolk - 1988 16' Scamp Deluxe
Donna D. is offline   Reply With Quote
Old 09-03-2016, 11:08 AM   #17
Junior Member
 
Name: John
Trailer: Big Foot
Alberta
Posts: 20
Sounds like we have the same trailer, cab 13ft bumper to tongue 16.3ft.
I also have some roof issues though not an emergency. I'm in Calgary. I believe there are cross members as I was on the roof installing vents last month. I would be replaceing wood with pressure treated for the structural side of things if possible.
Mac
__________________
Alberta Mac is offline   Reply With Quote
Old 09-03-2016, 12:55 PM   #18
Senior Member
 
Name: K C
Trailer: 1980 18' Sunrader Motorhome and 1971 Trailswest Campster
Washington
Posts: 1,163
Quote:
Originally Posted by cechardy View Post
I started on this project today, and it turns out, there are no support "rafters" in this unit? The ceiling consists of only styrofoam glued to the fibreglass and panels glued to that. This should make this job a lot easier than anticipated!


Sent from my iPad using Fiberglass RV
Those layers of fiberglass with foam adhered all across the surface followed by another layer of panels adhered all across the surface form what is known in the industry as a "SIP" which stands for structural insulated panel. SIPs are self supporting panels (no roof beams needed) when engineered correctly for the loads. But they can be delaminated when overloaded. That may happen if for instance a person put most of their body weight up there to work on an AC unit. Or the AC used was too heavy, very heavy snow loads, combination of such things, etc.

Rebuilding a SIP can be tricky but can be done. You need to have as close to 100% percent coverage of glue over the surface as possible to adhere materials together. Putting down rows of adhesive from a caulk gun is not sufficient for rebuilding a SIP unless those rows are spaced such that when compressed the glue spreads into that 100% coverage. Then you need to put well distributed, even compression all across the surface, done from from underneath, against the materials until the adhesive has been well cured. That means lots of spring poles that apply firm pressure all across the panels. In the factory the SIP was created while the roof was upside down and they could put weight on the SIP layers while the adhesive cured. The 100% coverage of adhesive is what gives SIPs and also stress skin panels their ability to support loads because it turns the light weight, lower strength materials into a single, thick structural unit of material.

You need to use the right adhesive for the job. You do not have absorbent materials against each other when you are dealing with foam and fiberglass. So there is no way for VOCs or water to evaporate or in the case of moisture curing glues (poyurethanes)no way for moisture to arrive from the environment. Although you can use polyurethane when gluing ridged foam to wood as wood provides its own supply of moisture if you very slightly dampen the wood surface that will kick of the polyurethane curing. But there is still some risk that the adhesive did not get enough moisture to cure and will remain soft and then the panels will delaminate.

Contact cements might be the answer or a slow curing epoxy (does not generate a lot of heat which would melt the foam). But a water based contact cement won't work unless one of the surfaces you are adhering is absorbent.
__________________
k corbin is offline   Reply With Quote
Old 09-03-2016, 06:45 PM   #19
Junior Member
 
cechardy's Avatar
 
Name: Cecil
Trailer: Bigfoot
Alberta
Posts: 14
Here are a few pictures from when I took it apart
Click image for larger version

Name:	ImageUploadedByFiberglass RV1472949817.530584.jpg
Views:	17
Size:	36.4 KB
ID:	99331Click image for larger version

Name:	ImageUploadedByFiberglass RV1472949856.917359.jpg
Views:	15
Size:	35.9 KB
ID:	99332Click image for larger version

Name:	ImageUploadedByFiberglass RV1472949873.408183.jpg
Views:	18
Size:	38.2 KB
ID:	99333Click image for larger version

Name:	ImageUploadedByFiberglass RV1472949906.012359.jpg
Views:	17
Size:	34.2 KB
ID:	99334Click image for larger version

Name:	ImageUploadedByFiberglass RV1472949937.395840.jpg
Views:	17
Size:	38.1 KB
ID:	99335


Sent from my iPad using Fiberglass RV
__________________
cechardy is offline   Reply With Quote
Old 09-03-2016, 06:46 PM   #20
Junior Member
 
cechardy's Avatar
 
Name: Cecil
Trailer: Bigfoot
Alberta
Posts: 14
I'll post some tomorrow of the progress so far


Sent from my iPad using Fiberglass RV
__________________
cechardy is offline   Reply With Quote
Old 09-30-2016, 05:16 PM   #21
Junior Member
 
Name: Matthew
Trailer: sportmaster
California
Posts: 4
Send a message via AIM to matthew davila Send a message via MSN to matthew davila
can you tell what they used to glue it with?
__________________
matthew davila is offline   Reply With Quote
Old 10-01-2016, 12:01 PM   #22
Junior Member
 
Trailer: 75 13' Boler and 84 17' Bigfoot
Alberta
Posts: 21
Bigfoot restoration

We are almost done an extensive renovation of our 84 Bigfoot. It had delamination throughout the walls and ceiling. My husband researched which adhesive would be the best to use with the foam and found West System Epoxy. Purchased at Lee Valley Tools. The windows were removed and he glued/clamped it back together section by section, waiting a day in between for it to cure.
Attached Thumbnails
IMG_0213.jpg  
__________________
Debbie H is offline   Reply With Quote
Old 10-03-2016, 10:04 AM   #23
Member
 
Name: Amy
Trailer: BigFoot
Alberta
Posts: 58
Following

Nothing to see here just following
__________________

__________________
Mountain Moma is offline   Reply With Quote
Reply

Tags
bigfoot


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


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to find replacement for 1998 Scamp 13' large ceiling vent katidesc13 Problem Solving | Owners Helping Owners 9 09-27-2014 04:31 PM
bigfoot 17 ceiling seperation hoppy1962 Problem Solving | Owners Helping Owners 4 11-11-2013 09:20 PM
Boler ceiling vent wanted Dan Simon Classified Archives 1 04-24-2006 10:32 AM
Ceiling vent leak Dan Simon Problem Solving | Owners Helping Owners 2 04-13-2006 08:11 AM
fishing wires behind Scamp's ceiling carpet Legacy Posts Electrical | Charging, Systems, Solar and Generators 6 07-11-2003 10:18 AM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:06 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.