Home / Slide In Truck Camper /

Homemade Slide On Truck Camper (Demountable)

homemade slide on truck camper

Homemade Slide On Truck Camper (Demountable)

Check out this very impressive DIY “demountable” slide-on camper by Guy Mercer!

Why a demountable?

“Demountables give the advantages of a caravan and a motorhome, plus some…in that you’ve got four wheel drive vehicle, so you can go anywhere. You’ve got the facility then of being able to tow something, which you can’t if you’re carrying a caravan. The other advantage is I can leave the demountable top at the campsite and then trek around wherever I want with a standard vehicle. “

Apparently Guy has some engineering background, and had the rare privilege to work on the original Raleigh Chopper (an iconic kid’s bike from the ’70s) as a student.

Among the camper’s features…

  • The walls are made of aluminum skinned styrofoam -- essentially a foam sandwich with an outside layer of aluminum sheeting bonded to the insulation, which is then bonded to plywood on the inside, resulting in a very lightweight construction.
  • It not only has a popup roof -- it's a HARD SIDED popup roof! Once the roof is raised, the upper walls can be propped up to make it function like a full-size camper with heaps of headroom.
  • The jacks are made to be easy to remove and attach in order to leave the camper behind. He engages the jack with a power drill.
  • Energy efficient LED taillights.
  • TWO Wireless backup cameras, one pointing down behind the camper and another pointing backwards towards the road. Regarding the choice to use wireless (which is generally much less reliable than a hard-wired connection), he says it's because it reduces the hassle when switching from camper-on to standard driving mode.

(I do wish they'd gone more into the construction rather than the electronics!)

Share this article


  • Guy Mercer
    July 31, 2015

    All the frames for the camper are welded aluminium box sections.
    This stronger than wood and importantly lighter.
    I have also modified the truck by fitting air assist to the suspension. This has increased the mass limit of the truck from 3210 Kgs to 3480 Kgs giving me a lot more load flexibity.

    • September 22, 2015

      Hey Guy! Thanks so much for dropping by and clarifying! That’s a helluva camper you’ve got there. 🙂

      • Guy Mercer
        September 23, 2015

        Happy to help others with general tips.
        I did not correct Andy when he interviewed me…. The camper does have a shower but it is a plug in . The floor where the porta potti is lower than the main floor with flowtex removable carpet. All I have to do is add the curtain when needed.

  • Guy Mercer
    October 17, 2016

    If you would like full specs and photos , including new L shaped canopy just send me an email address.

    • November 22, 2016

      I would be interested in getting some pictures and spec on your build. It looks great and just what I’m looking for.

      Ron J

      [email protected]

  • Emily
    November 11, 2016

    WoUld love full specs and photos really interested

  • Rene
    March 14, 2017

    Hi! Thanks for your posting, your pics and your comments. I will start building my own slide-in, but on my utility trailer (5ft x 10 ft) instead of a pick-up truck. I would appreciate as many pictures and advice you may offer. I want to build with wood, strong but also light. I will be pulling it with my Jeep Wrangler Unlimited 2012 on road and also light off-road. Thanks!

Leave a comment

Your email address will not be published. Required fields are marked *