No. I have custom 2mm frp made instead of AL.
5-7x12 Overland build Thread
- Thread starter Murdy
- Start date
Hmmmm.... my readings on FRP say it's no good for exterior. Not correct?
Or are you just using this for your flooring with an undercoat?
Not hardware store FRP. It is gel coated and UV stabilized. Think Earthroamer. 100% engineered for the application.
Wiling to share your supplier?
Thanks!
high-and-dry
Active member
A few of us have used their stuff, its great. And half the cost of filon. I still have 75 x 8.5 feet of the stuff.
I think I've semi officially decided to go with plywood/osb. Going the frp route opens up a bunch of new things to learn for me compared to wood. Not that I'm opposed to learning, but in the interest of having at least the shell operational this summer, I need to prioritize.
high-and-dry
Active member
dont use osb.
And using a fiberglass skin is easy, and fast. But I believe in gluing down, and thats not what most say to do. Roll on the epoxy, put the skin on and roll it out and your done except trimming.
Why not osb? My plan is to have the whole thing sealed with box liner over it... Should be ok, no?
high-and-dry
Active member
Osb will not hold up to any leaks, even the smallest leak can ruin it if it cant dry out. A small leak will let water in but not out. Go with quality plywood and put down fiberglass and epoxy and do every exterior surface to create a complete seal. Then do the bed liner if thats what you mean.
Do you mean bed liner when you say box liner? if so read the below link.
expeditionportal.com
Do you mean bed liner when you say box liner? if so read the below link.
Raptor Liner on wood sides trailer not holding up? How can I fix it?
So I built a custom off road style Teardrop trailer and decided for exterior to use 1/4” Baltic Birch Plywood. After the trailer was built we filled in all the screw holes with bondo then sanded the wood and sprayed the bare wood with Raptor liner. It when on think and dried super hard. I...
expeditionportal.com
Yes, bed liner.Osb will not hold up to any leaks, even the smallest leak can ruin it if it cant dry out. A small leak will let water in but not out. Go with quality plywood and put down fiberglass and epoxy and do every exterior surface to create a complete seal. Then do the bed liner if thats what you mean.
Do you mean bed liner when you say box liner? if so read the below link.
Raptor Liner on wood sides trailer not holding up? How can I fix it?
So I built a custom off road style Teardrop trailer and decided for exterior to use 1/4” Baltic Birch Plywood. After the trailer was built we filled in all the screw holes with bondo then sanded the wood and sprayed the bare wood with Raptor liner. It when on think and dried super hard. I...
There is an epoxy coating that goes on first, and then the raptor liner. The ones that have failed seem to have applied improperly.
Would a water resistant osb (with proper waxes and resins in it) just not absorb water?
I left a sheet out all winter to cover my chicken run and through snow, freeze, thaw repeat it looks brand new. Blew my mind.... And then got me thinking about using it for the shell.
high-and-dry
Active member
The surfaces are pretty good, the edges esp cut ones do swell when they get wet. Yes some is better than others, but using marine ply is over all better quality. But you should still use fiberglass and epoxy. The epoxy will seal the wood somewhat, but the glass will help stabilize the surface. It also allows for a "thicker" layer of epoxy. The expansion of the wood is what makes the bed liner fail, the glass layer cant expand like the wood does.
Ahhhh.... I get you now. I thought you meant frp when you said fiberglass.
I'll look into that for sure. Thank you!
high-and-dry
Active member
Well I did initially. But as a min I would do the fiberglass cloth and epoxy.
I am typically anti wood in anything structural. But if I had to do a wood one, I would do a full fiberglass layup to seal it.