Fiberglass Covering?

Finishes, paints and coatings

Fiberglass Covering?

Postby mjewell5 » Wed Jul 29, 2015 1:50 am

Hello all:

I will be starting construction shortly, and was wondering if anyone has covered their entire TD with fiberglass cloth and resin. I have worked with fiberglass before, having owned a couple of sailboats, so I'm not scared or anything. Just curious to know if this has been done before. If so, what weight cloth? One of my goals is to not use any trim where the roof and walls meet.

Thanks for any help.
mjewell5
Teardrop Builder
 
Posts: 35
Images: 14
Joined: Mon Jun 29, 2015 3:26 pm

Re: Fiberglass Covering?

Postby Pmullen503 » Wed Jul 29, 2015 7:51 am

Glass cloth and epoxy would certainly work. 6 oz cloth with bias tape on the joints should be adequate. UV protection for the epoxy would be needed.
Pmullen503
Teardrop Master
 
Posts: 242
Images: 57
Joined: Sun Nov 23, 2014 1:33 pm

Re: Fiberglass Covering?

Postby tony.latham » Wed Jul 29, 2015 9:37 am

It's common with the woodies.

T
Image
User avatar
tony.latham
Silver Donating Member
 
Posts: 2314
Images: 17
Joined: Mon Jul 08, 2013 4:03 pm
Location: Middle of Idaho on the edge of nowhere
Top

Re: Fiberglass Covering?

Postby Juneaudave » Wed Aug 05, 2015 8:28 am

We used 4 oz plain weave on our stripper and it has performed well. In the five or six years it has been on the road, we have had a some small delaminations at the edges where water worked in (Juneau rain) and some pitting from rocks on the front...not too bad, just regular maintenance type stuff. i don't know what going to 6 oz would gain except that it is a little less susceptible to snagging while handling it before wet out.
User avatar
Juneaudave
Super Duper Lifetime Member
 
Posts: 3192
Images: 372
Joined: Sun Jul 03, 2005 12:11 pm
Location: Juneau, Alaska
Top

Re: Fiberglass Covering?

Postby Atomic77 » Tue Aug 11, 2015 7:18 pm

I was considering doing the same thing but ended up going with Filon. I too am going with a "trimless" exterior and moulding all the seams. One of the things that I've been kicking around in my head is... is it necessary to cover the entire thing in cloth? I ended up giving mine two coats of West epoxy before I skinned it. Honestly I questioned whether or not to put on the Filon because the areas that I sanded ended up looking just like fiberglass skin already. I defiantely see using glass on seams and irregular areas and such, but for big, smooth, open places why wouldn't a couple coats of epoxy be sufficient? Of course I would follow with a urethane or polyester primer and a quality top coat... I did this to my interior panels, sanded them smooth, primed and painted them in a candy base coat clear coat. They look no different than any other metal or fiberglass panel. Came out cherry. In boat building we use the glass for structural purposes but since the wood really doesn't need reinforcement, I'm not convinced it's worth it.
:thinking:
Michael

"The Strength is in the Sum of the Parts..."

The Astroliner

Follow The Astroliner Blog Here!

Check out our YouTube video
User avatar
Atomic77
500 Club
 
Posts: 957
Images: 308
Joined: Tue Oct 08, 2013 5:29 pm
Location: Fort Wayne Indiana
Top

Re: Fiberglass Covering?

Postby mjewell5 » Mon Aug 17, 2015 3:55 pm

Interesting points of view. Maybe I'll settle on a sort of "hybrid" instead, and put a strip or two along the top corners, and cover the rest with plain resin. I'm confident that I can get it all blended...not worried about that. The corner strip would certainly add some strength to the corner joint, and the resin on the whole thing would protect the wood.

Thanks for the input guys!
mjewell5
Teardrop Builder
 
Posts: 35
Images: 14
Joined: Mon Jun 29, 2015 3:26 pm
Top

Re: Fiberglass Covering?

Postby Pmullen503 » Mon Aug 17, 2015 9:13 pm

Over the long haul, you'll be glad you used cloth under the epoxy. I have a couple boats where I used just resin over the wood trim and it doesn't last out in the weather. Resin only on the interior, OK but not on the outside. I'd use 6 oz at least on the front and roof (hail and sun) but 4 oz on the sides would save you some resin.
Pmullen503
Teardrop Master
 
Posts: 242
Images: 57
Joined: Sun Nov 23, 2014 1:33 pm
Top

Re: Fiberglass Covering?

Postby Atomic77 » Mon Aug 17, 2015 11:20 pm

Pmullen503 wrote:Over the long haul, you'll be glad you used cloth under the epoxy. I have a couple boats where I used just resin over the wood trim and it doesn't last out in the weather. Resin only on the interior, OK but not on the outside. I'd use 6 oz at least on the front and roof (hail and sun) but 4 oz on the sides would save you some resin.

And why would you say that it failed? Was it just epoxy only? Any UV inhibitor? Was it primed or topcoated? I'm curious to know how using cloth keeps the epoxy from failing?
Michael

"The Strength is in the Sum of the Parts..."

The Astroliner

Follow The Astroliner Blog Here!

Check out our YouTube video
User avatar
Atomic77
500 Club
 
Posts: 957
Images: 308
Joined: Tue Oct 08, 2013 5:29 pm
Location: Fort Wayne Indiana
Top

Re: Fiberglass Covering?

Postby Pmullen503 » Tue Aug 18, 2015 7:00 am

This was used over solid wood with a marine varnish with UV inhibitor. I believe the failure mode involved the expansion and contraction of the wood caused the resin to start to delaminate. Over time this gets bad enough that water can get to the wood and accelerate the process. It took about 5 yrs before it was noticeable. I still have that boat and it's almost 30 yrs old. The epoxy and cloth covered wood is still fine. BTW it was a huge PIA to get that resin off the wood to refinish it as I recall.

Using cloth plus resin reinforces the resin layer providing a more stable, longer lasting barrier layer.
Pmullen503
Teardrop Master
 
Posts: 242
Images: 57
Joined: Sun Nov 23, 2014 1:33 pm
Top

Re: Fiberglass Covering?

Postby Atomic77 » Tue Aug 18, 2015 7:10 am

Hm... Makes sense. Thanks for the info.
Michael

"The Strength is in the Sum of the Parts..."

The Astroliner

Follow The Astroliner Blog Here!

Check out our YouTube video
User avatar
Atomic77
500 Club
 
Posts: 957
Images: 308
Joined: Tue Oct 08, 2013 5:29 pm
Location: Fort Wayne Indiana
Top

Re: Fiberglass Covering?

Postby OP827 » Fri Aug 21, 2015 6:56 pm

Pmullen503 wrote:Glass cloth and epoxy would certainly work. 6 oz cloth with bias tape on the joints should be adequate. UV protection for the epoxy would be needed.


I am going with 6oz too in my build and one layer feels good enough, even over the XPS foam, not plywood. If there is plywood, then it is almost seems an overkill, but 6 oz cloth maybe easier to work with than lighter cloth as some people on this board mentioned from their experience.
My foldable foam trailer build: http://www.tnttt.com/viewtopic.php?f=50&t=61344
OP827
Donating Member
 
Posts: 976
Images: 249
Joined: Fri Apr 25, 2014 7:27 pm
Location: Alberta, Canada
Top

Re: Fiberglass Covering?

Postby OP827 » Fri Aug 21, 2015 6:59 pm

Atomic77 wrote:Hm... Makes sense. Thanks for the info.


And laying fiberglass cloth over the 2D surface is quite easy and straightforward too, right? At least this is what I have found in my build..
My foldable foam trailer build: http://www.tnttt.com/viewtopic.php?f=50&t=61344
OP827
Donating Member
 
Posts: 976
Images: 249
Joined: Fri Apr 25, 2014 7:27 pm
Location: Alberta, Canada
Top

Re: Fiberglass Covering?

Postby Travellingchris » Wed Sep 09, 2015 1:20 pm

I am covering my camper in fiberglass, since it's all rounded and there are no complex shape, I am going with 18oz woven roving over foam. The result should be great, I tested it on a small scale model and it worked great.

Good luck,

Chris
User avatar
Travellingchris
Teardrop Inspector
 
Posts: 7
Images: 6
Joined: Sun Sep 06, 2015 3:09 pm
Location: Qu/bec, Canada
Top

Re: Fiberglass Covering?

Postby COMPAL55 » Fri Oct 16, 2015 11:01 am

I concur, it is done all the time. I am currently building one, and almost three quarters of the way for completion. I got a little lucky on mine, a buddy of mine had about 40 truck tonneau covers he needed to get rid of, so I pieced two halves together to make the walls and same for the floor, would not reccomend for floor; it is durable but not adequate, would do wood panel floor and cover with fiberglass. So the reason the tonneau covers work is because it is a sandwich layup, consisting of one fiberglass layer on front and back of the paper honey comb (aprox. one inch thick) . 1) it cut my cost cause it was free 2) the panel is already insulated cause of the honey comb paper core 3)not sure how much weight savings vs just wood....didn't matter cause I got it all up in a few days. in the end it seems like less maintenance than just wood or alluminum, probably use some good quality car paint to finish; but yes the wood and aluminum does look alot better.......lol looks like ur on the right track there are a lot of folks here that seem to know what to do, keep digging this is a great web site with extensive ideas.......
COMPAL55
Teardrop Inspector
 
Posts: 1
Joined: Wed Oct 30, 2013 3:57 am
Top


Return to Skinning secrets

Who is online

Users browsing this forum: No registered users and 2 guests