Your first 4 weekends of van conversion
Most people freeze at the start, overwhelmed by YouTube rabbit holes and conflicting advice. Here's the actual sequence — what goes in first, what decisions can wait, and what beginners consistently get wrong.
By The JustBeginning Editors · Published May 28, 2026
Van conversion has a YouTube problem. There are thousands of hours of build videos — gorgeous time-lapses, satisfying power tool moments, dramatic before-and-afters — and almost none of them tell you the thing you actually need to know before you start: what order to do things in, and why.
The sequence matters more than almost any single material choice. Put the flooring in before the electrical and you’ll be cutting up your floor to run wires. Build the bed frame before you’ve thought through the kitchen position and you’ll be boxing yourself out of the best layout. This guide is about the sequence.
Weekend 1: Measure, plan, and prep
Before you touch a tool or order a single item, spend a full day measuring your van. Not just the overall interior length — every dimension that affects what you can build. Height at the center spine. Width at the wheel wells (they intrude significantly in most vans). Height of the rear door opening. Width of the sliding door. Write all of these down.
Then draw a floor plan to scale on paper. It doesn’t have to be architectural — graph paper and a pencil work fine. The exercise forces you to make the decisions you’d otherwise defer until you’ve already framed yourself into a problem:
Where does the bed go? Lengthwise along one wall is the most common layout — it leaves the rear doors accessible and creates a clear traffic flow from front to back. Width-side across the rear is wider but blocks the rear doors. Pick one and commit.
Where does the kitchen go? Almost always behind the driver’s seat, opposite the sliding door. You want ventilation access (open door) while cooking and a surface visible from the side when camping.
Where does electrical live? The battery bank is usually under the bed — low and forward of the rear axle for weight distribution. Solar cables run from the roof through the ceiling to wherever the charge controller mounts. Plan these cable runs before you build anything that gets in their way.
With the plan done, prep the van. Remove the factory floor liner if there is one. Degrease the metal floor and walls with a solvent wipe. Drill out any rust spots (there will be some, especially around door seals) and treat with a rust converter before it’s covered by insulation. You won’t get this access again easily.
Weekend 2: Insulation
Insulation is the most tedious phase and the most important to do correctly, because once the walls are paneled and the ceiling is done, every mistake is locked in.
The sequence here matters too: metal first, then floor, then walls, then ceiling — in that order, because each layer informs the one above it.
Treat the metal first. Clean and dry all metal surfaces. Use a rust inhibitor on any bare metal. Some builders add a layer of mass-loaded vinyl or butyl-backed foil to the flat metal panels to reduce road noise. It’s not required but it makes a real difference in how the van sounds at highway speed.
Floor insulation. Lay 1/2” to 3/4” rigid foam board directly on the metal floor before your subfloor goes in. This is the one place rigid foam is unambiguously the right choice — the floor is flat, the vapor risk is lower than walls, and the foam doubles as a leveling layer. Cut carefully around the wheel wells.
Wall insulation. This is where 3M Thinsulate earns its premium. Van walls are curved, ribbed, and full of irregular spaces that rigid foam can’t fill. Thinsulate cuts with scissors and pushes into every corner. Press it into the ribs and against the metal panels — it stays without adhesive in most places, and a few strips of tape secure anything that wants to fall.
Ceiling. Same as walls — Thinsulate cut to fit the curves. The ceiling has structural ribs that create natural pockets; fill each one.
Spray foam (Great Stuff or similar) comes last: seal every gap, every seam where insulation meets metal, every place where a wiring grommet or bracket penetrates the insulation layer. This step takes two or three cans and most builders underestimate it. Cold bridges are invisible and their consequences — condensation dripping inside finished walls — show up months after the build.
Weekend 3: Framing, electrical rough-in, and subfloor
With insulation done, you’re building the skeleton of everything that follows. Frame first, then rough in electrical, then subfloor — in that order.
Framing. 2x2 or 2x3 lumber screwed into the van’s existing mounting points (or riveted to the metal ribs if you’re comfortable with rivets). Build the bed platform frame, the basic wall framing, and any blocking where cabinets will attach. Don’t over-engineer it — a simple frame with adequate blocking is faster to build and just as strong.
Electrical rough-in. This is where you run all your wire before walls close off access. Every wire route, every conduit, every hole drilled through a frame member: this is the moment. Run more conduit than you think you need. Pulling additional wires through existing conduit is easy; drilling through finished walls is not.
Key runs to plan now: solar cable from roof penetration to charge controller location; wire from charge controller to battery bank; wire from battery to fuse block; runs from fuse block to each load (fan, fridge, lights, outlet). Label every wire at both ends before it disappears behind a wall.
Subfloor. Once framing and electrical rough-in are done, lay the subfloor: 1/4” luan plywood cut to fit. The subfloor screws into the floor framing and creates a flat, nailable surface for your finish floor. Screw it down every 8-12 inches — van floors flex more than house floors.
Weekend 4: Finish floor, build the bed, and connect electrical
Finish floor. Lay your luxury vinyl plank over the subfloor, starting from the center of the van and working outward. Click-lock LVP goes in fast — a full van floor takes 2-3 hours. Cut with a utility knife and a straight edge. Leave an 1/8” gap at all walls for seasonal movement.
Build the bed platform. The bed is your most important structural build. Build it from 3/4” plywood supported by 2x4 legs. The height determines your under-bed storage access (minimum 12” for useful storage; 16-18” if you want to store bins that slide under). Cut the top panel to your exact foam dimensions and screw everything with construction screws.
Connect the electrical system. Mount the battery, mount the charge controller, connect solar cable to controller, controller to battery, battery to fuse block. Take your time here — connections made wrong cause fires. Use proper marine-grade wire, proper ring terminals, proper fuses at every connection point. Tug-test every connection before putting anything under load.
Turn on a light. Plug in a phone. It works. Weekend 4 is the one where a van starts to feel like a home.
The mistakes most first-time builders make
Installing the fan last. The Maxxair fan goes in before your ceiling is done — the fan sits in a 14” hole in the roof, and the wiring and trim ring integrate with the ceiling material. Builders who do it after the ceiling is in spend a miserable afternoon fighting the trim from below. Do the fan on weekend 2, before the ceiling goes in.
Underestimating the electrical. Most first-time builders think of the battery as the electric system. The battery is just storage. The real system is the charge controller (which protects the battery from over- and under-charge), the fuse block (which protects every circuit from shorts), the wiring gauge (which determines how much current can flow safely), and the battery monitor (which tells you what you’re actually using). Skimping on any of these creates either a system that doesn’t work or one that’s a fire risk.
Making the bed too short. Measure yourself lying down in the van before you build the platform. A 6’ platform feels generous at a hardware store and tight at 11pm. Most people want at least 76 inches of sleeping length; taller people need more. Build the platform before you’ve paneled the walls behind it, so adjusting it doesn’t mean pulling anything else apart.
Skipping the CO detector. This one isn’t optional. Propane cooking and any gas-burning heater produce carbon monoxide in an enclosed space. A $25 detector is the difference between “woke up with a headache and learned something” and not waking up.
What a finished van feels like
After four weekends, you’ll have a functional shell: insulated, floored, lit, with a working fan and a working battery bank. The bed is in. The kitchen is basic — a camp stove and a portable fridge, or a fridge and an ice chest, depending on your electrical budget.
It doesn’t look like the Instagram vans yet. The walls might be bare plywood. The kitchen might be a shelf with a camping stove on it. None of that matters for the first trip. What matters is that you built it, you know every wire and every bolt, and when something needs adjusting, you know exactly where to look.
The finishing work — wood paneling, custom cabinets, a real sink, a diesel heater — comes later, trip by trip, as you learn what your actual life in the van demands.
Ready to buy your first materials? See our van conversion gear guide for the insulation, electrical components, and ventilation fan that matter most in a first build.