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My DIY camper shell - Poor man's fiberglas, light and cheap

B34c0n

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I realized it may be helpful to others so I'll post here! I posted about it in my build thread. This is my DIY camper shell. The shell itself is around $250 and weighs so little one person can pick it up and take it off. The outer metal shell is heavier but still manageable by one person.

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 414789-f67977b385e6109ffb107697e1f66328


The intent was to build an overland shell to more easily fit gear and keep grubby hands off my stuff. But when I'm not camping I use my truck as a truck and so it can't be so hard to take off like a typical fiberglass shell.

The base of the shell is made with XPS home insulation. I used expanding foam as "glue" to tie the insulation pieces together and fill the cracks.

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 413397-6c0bfe035e129fb376cebf86d4c1072d

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 413396-60c4180efc5bfdfbf742c4e4c10e3035

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 413398-bc87a15ce659e5f6d8875113e33bf211


After you have the main body complete you use some canvas and type 2 wood glue. While type 3 wood glue is fully water proof, type 2 can be reshaped with heat and critically, glues to itself. Titebond ii is type 2 wood glue.

Anyway, you roll on wood glue and lay the canvas over top. You can use and iron to set the glue quickly and iron out wrinkles in one go.

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 413615-ca6dda9b425decef5fbd79d05d60b2ce

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 413613-a7cccec77d9218f1d7b781de6c9f34be


Once dry you cover it in watered down exterior paint. The reason for watering it down is so that the paint itself seeps into the canvas and makes a full waterproof layer. I did 2 watered down layers and gave it a sanding to smooth out the fabric texture. Then one more layer of paint but this time it wasn't watered down. Then I hit it with spray on bed liner.

For the bed liner it was CRITICAL to make sure the foam was completely sealed or covered since the bed liner spray actually dissolves the foam!

For the hinge section I used a wooden frame on the inside of the camper shell and had the canvas cover the wood as well to give a solid screw in point. In a follow on post I'll get a picture of the door prop I finally installed and lights!

The shell was made to fit within the JCR adventure rack and has a couple of through bolts to hold it in. This way the shell is only there to keep my gear safe and dry. The metal frame carries the weight of the RTT.

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap 414790-fb72b35cabfff6c81d732ea27f31f77a
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B34c0n

B34c0n

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This is about 6 months in and still going strong. Plus my pull out drawers.

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap PXL_20250730_002852410


Feel free to ask any questions if you have them! It was a good learning experience and I would impart a lot of knowledge to a future builder of one I wish I had.

I also have a build video if you're interested.
 
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B34c0n

B34c0n

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Things that haven't held up:

The hinge I got was "waterproof" but it's rusted to hell. I have an aluminum one to go in. Just need to swap it out.

I originally used gas struts to hold the door open. They failed quick in the elements and were really hard on the foam.

The main flat top area has a bit of a bow. If I did it again I would build more of a frame first and have a crossbar in the middle.

What's held up well:

The paint and shape. It's taken a few tree branches and I've dropped and and things on it and it keeps on trucking.

The door. I totally expected the door to wear or break over time. It hasn't. It kind of just works still. And it's set up like old jeep hard tops where closing the gate holds the door shut.
 

kb5zcr

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Very nice diy project. Thanks for posting.
 

JTdiRtyD

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Nice work!

If you keep having issues with hinges, look into hurricane hinges. They do cost a little more, but they work great and prevent water from sneaking down through the hinge, even when open.
 

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B34c0n

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Nice work!

If you keep having issues with hinges, look into hurricane hinges. They do cost a little more, but they work great and prevent water from sneaking down through the hinge, even when open.
You sir just made my day. This is exactly what I've been looking for. It will be worth the cost!
 

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Seasquared

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That is not a "poor man's" creation, that is a solid DIY project. Many people prefer to create something that fits their exact needs than buy prefab. Nothing wrong with prefab at all though.

Congrats on the build!
 
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That is not a "poor man's" creation, that is a solid DIY project. Many people prefer to create something that fits their exact needs than buy prefab. Nothing wrong with prefab at all though.

Congrats on the build!
Thank you! It was rewarding to get exactly what I needed. Originally I tried to use a hard tonneau. But with a rack on top you can't really open the cover. And any sort of drawers makes a cooler no longer fit.

Poor man's fiberglass is actually the name of the process! It's typically used to make ultralight teardrop campers. Some people get crazy complex with it! It's surprisingly durable and easy to do. It's actually similar to how old boat decks and some plane wings were made as I understand it.
 

JTdiRtyD

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Poor man's fiberglass is actually the name of the process! It's typically used to make ultralight teardrop campers. Some people get crazy complex with it! It's surprisingly durable and easy to do. It's actually similar to how old boat decks and some plane wings were made as I understand it.
Some of those foamie camper builds are damn nice, but I also question how stable they get in winds. I get folks wanting them light, but there is such a thing as too light lol I've seen some good sized ones that they claim are under 1,000lbs and I just picture a good sidewind blowing it right over.
 

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B34c0n

B34c0n

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Some of those foamie camper builds are damn nice, but I also question how stable they get in winds. I get folks wanting them light, but there is such a thing as too light lol I've seen some good sized ones that they claim are under 1,000lbs and I just picture a good sidewind blowing it right over.
For sure. With water and batteries it's probably fine. But they are pretty large sails with low weight. I also drive a TJ. And that's way heavier but still a sail in a crosswond
 
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B34c0n

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I wanted to get a new photo to post but I haven't been home since I started this thread. So screenshot it is!

This is the lights setup I have.

The middle brake light is controlled by a single relay. The amber lights are used for turn signals but I intend to plug a flasher in for dusty chase lighting setups.

Let me know if you want the wiring drawn out for the relay setup. The whole thing just plugs into the 4 pin trailer plug.

Jeep Gladiator My DIY camper shell - Poor man's fiberglas, light and cheap PXL_20251013_034639754
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