PoorMansFiberglass Undercarriage

Anything to do with mechanical, construction etc

PoorMansFiberglass Undercarriage

Postby KendaldaCosta » Thu Mar 08, 2018 4:51 pm

Has anyone ever watersealed their undercarriage with PMF? I'm thinking about doing it in lieu of a tar paint/ liquid rubber/ epoxy. Thoughts?
Kendal
KendaldaCosta
Teardrop Builder
 
Posts: 39
Images: 7
Joined: Tue Nov 07, 2017 7:00 pm
Location: Edmonton, Alberta, Canada

Re: PoorMansFiberglass Undercarriage

Postby linuxmanxxx » Thu Mar 08, 2018 5:07 pm

I think using plasticore would be more durable and probably same cost with little to no maintenance. It's the stuff they make yard signs out of.

Sent from my Pixel 2 XL using Tapatalk
Steve
MicroCampers
512-522-2810
info@microcampers.com
User avatar
linuxmanxxx
500 Club
 
Posts: 696
Images: 10
Joined: Fri Sep 10, 2010 1:50 am
Location: Abilene TX

Re: PoorMansFiberglass Undercarriage

Postby KendaldaCosta » Thu Mar 08, 2018 5:10 pm

linuxmanxxx wrote:I think using plasticore would be more durable and probably same cost with little to no maintenance. It's the stuff they make yard signs out of.

Sent from my Pixel 2 XL using Tapatalk


I kind of would like it to be continuous and wrap up the sides a bit. I like the idea of a continuous barrier with no gaps. I assume you'd glue/screw the plasticore to the underside thus making holes for moisture? Correct me if i'm on the wrong track.
Kendal
KendaldaCosta
Teardrop Builder
 
Posts: 39
Images: 7
Joined: Tue Nov 07, 2017 7:00 pm
Location: Edmonton, Alberta, Canada
Top

Re: PoorMansFiberglass Undercarriage

Postby linuxmanxxx » Thu Mar 08, 2018 5:26 pm

Glue and seal it no screws. It's the underside and only subject to splashing so never submitted to same levels of moisture as roof and walls. Adhesives are a water barrier as well as the plasticore. No UV exposure so it will last a very long time. Simple not messy and very light.

Sent from my Pixel 2 XL using Tapatalk
Steve
MicroCampers
512-522-2810
info@microcampers.com
User avatar
linuxmanxxx
500 Club
 
Posts: 696
Images: 10
Joined: Fri Sep 10, 2010 1:50 am
Location: Abilene TX
Top

Re: PoorMansFiberglass Undercarriage

Postby KendaldaCosta » Thu Mar 08, 2018 5:29 pm

linuxmanxxx wrote:Glue and seal it no screws. It's the underside and only subject to splashing so never submitted to same levels of moisture as roof and walls. Adhesives are a water barrier as well as the plasticore. No UV exposure so it will last a very long time. Simple not messy and very light.

Sent from my Pixel 2 XL using Tapatalk



That makes a lot of sense. Now the only problem is that I'm 5x10, so I likely would have some seams. Thus my leaning towards another solution.
Kendal
KendaldaCosta
Teardrop Builder
 
Posts: 39
Images: 7
Joined: Tue Nov 07, 2017 7:00 pm
Location: Edmonton, Alberta, Canada
Top

Re: PoorMansFiberglass Undercarriage

Postby linuxmanxxx » Thu Mar 08, 2018 5:37 pm

KendaldaCosta wrote:
linuxmanxxx wrote:Glue and seal it no screws. It's the underside and only subject to splashing so never submitted to same levels of moisture as roof and walls. Adhesives are a water barrier as well as the plasticore. No UV exposure so it will last a very long time. Simple not messy and very light.

Sent from my Pixel 2 XL using Tapatalk



That makes a lot of sense. Now the only problem is that I'm 5x10, so I likely would have some seams. Thus my leaning towards another solution.
A seam underneath isn't a problem glued as the glue is a barrier sealing the seam. Plus it will never have standing water so it's not really relevant as long as you install it correctly. Exposed canvas can absorb and rot but plasticore can't do either.

Sent from my Pixel 2 XL using Tapatalk
Steve
MicroCampers
512-522-2810
info@microcampers.com
User avatar
linuxmanxxx
500 Club
 
Posts: 696
Images: 10
Joined: Fri Sep 10, 2010 1:50 am
Location: Abilene TX
Top

Re: PoorMansFiberglass Undercarriage

Postby Andrew Herrick » Thu Mar 08, 2018 7:41 pm

I have used plasticore, aka Coroplast, as in underbelly material, and so far it has held up fine. As far as seams go, you can just use tape designed for adhesion to polyethylene.

With that said, I'm not seeing the clear benefits over an elastomeric coating, unless you're using some type of OSB or plywood that doesn't take water-based coatings well.

The only "maintenance-free" underbelly, IMHO, is aluminum sheeting.

You can also look into a polyethylene-impregnated woven fabric, often used for RV's and mobile homes, that commonly goes by the brand name "Darco." Again, it is pretty easy to patch up if damaged.
A few of my builds:

ImageImageImageImage


SEE MORE AT: boondockcampers.com
User avatar
Andrew Herrick
Teardrop Master
 
Posts: 271
Images: 15
Joined: Mon Apr 25, 2016 5:39 pm
Location: Cedar City, Utah
Top

Re: PoorMansFiberglass Undercarriage

Postby Sparksalot » Thu Mar 08, 2018 11:44 pm

linuxmanxxx wrote:Glue and seal it no screws. It's the underside and only subject to splashing so never submitted to same levels of moisture as roof and walls. Adhesives are a water barrier as well as the plasticore. No UV exposure so it will last a very long time. Simple not messy and very light.

Sent from my Pixel 2 XL using Tapatalk


Agree on the minimal moisture and splashing. This is the underside of my 10 year old tear. I've even had it off road muddin' with a 4x4 tv. I'm rewiring the cable to the tv here to use a 7 wire cable.

153386

153387
You don't know the power of the Dork Side.

The Compass Rose build thread
viewtopic.php?t=23213

Inspiration
http://tnttt.com/Design_Library/Trailer%20for%20Two.htm
User avatar
Sparksalot
Silver Donating Member
 
Posts: 1146
Images: 520
Joined: Fri Feb 15, 2008 9:36 pm
Location: Texas by God (TX, Buda, TX)
Top

Re: PoorMansFiberglass Undercarriage

Postby bdosborn » Fri Mar 09, 2018 7:50 pm

The underside of trailers doesn't need any more protection than a coat of paint, IMHO. Start looking under old trailers, all the ones I looked at were only protected by paint and looked just fine. We painted ours with wood stair paint and 10 years later it looks like new.
Image
Bruce
2009 6.5'X11' TTT - Boxcar
Image
Boxcar Build
User avatar
bdosborn
Donating Member
 
Posts: 4282
Images: 451
Joined: Wed May 05, 2004 11:10 pm
Location: CO, Littleton
Top

Re: PoorMansFiberglass Undercarriage

Postby BrwBier » Fri Mar 09, 2018 10:05 pm

You seem to be looking for a solution to a problem that does not exist. Remember anything that will keep water out will also keep water in. How often are you towing in the rain?
User avatar
BrwBier
1000 Club
1000 Club
 
Posts: 1118
Images: 100
Joined: Fri Oct 21, 2005 8:28 pm
Location: Sheboygan, WI
Top


Return to Teardrop Construction Tips & Techniques

Who is online

Users browsing this forum: No registered users and 3 guests