The bed is the single largest layout decision you will make in a camper van conversion. It fixes where the fridge goes, how tall your garage is, whether you can stand up in the middle of the van, and how much gear you can carry without going over payload. Get it wrong and you are re-cutting plywood six months later.
Most beginners search for a product to buy. What they actually need is a shortlist of sleeping solutions that match their van, their headroom, and how much living space they are willing to give up. That is what this roundup covers: the best camper van beds for DIY conversions, from a bolt-in steel cot to a roll-up slat deck that adds airflow under the mattress.
I have spent time with vans built three different ways and compared all ten of these systems against the same criteria: footprint, sleeping height, weight, how much storage it leaves underneath, and how much drilling it takes. One note before we start. The platform you build matters as much as the mattress you put on it, so each entry below tells you which part of the build it solves and which part you still have to make yourself. Once you have picked a layout, our 12V battery monitor picks and portable camping refrigerator guide cover the two systems that live directly under most of these beds.
Top 3 Camper Van Beds for DIY Conversions in 2026
Disc-O-Bed Convertible Double Cot
- Bolt-in steel frame
- 500 lb per cot
- Tool-free reconfiguration
Best Camper Van Beds for DIY Conversions at a Glance in 2026
| Product | Specifications | Action |
|---|---|---|
Disc-O-Bed Large Convertible Double Camping Cot |
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Zinus 8 Inch Short Queen Memory Foam Mattress |
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MLILY 8 Inch Short Queen RV Gel Mattress |
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Dyonery 10 Inch Short Queen RV Mattress |
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Celestial Sleep 8 Inch Firm RV Short Queen |
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Pataku Folding Bed with 5 Inch Memory Foam |
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Avenco 4 Inch Trifold Mattress Topper |
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WanderRest 12 Inch Cool Hybrid RV Mattress |
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Vamcheer 6 Inch Full Size Folding Mattress |
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LOBOTOU Queen Roll-Up Slat Base |
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What Is a Camper Van Bed Platform?
A camper van bed platform is a raised deck built across the width of the van at a chosen height, usually a plywood or slatted surface on a wood, steel, or 80/20 extruded aluminum frame. It sits over or between the wheel arches, carries a mattress, and turns the space beneath it into a garage for the fridge, water system, battery, and gear.
Builders work from a short list of layouts. Here are the eight you will see most often, and the reason each one exists.
- Fixed platform bed – a permanent transverse deck across the rear. The most garage space of any layout and the least living space.
- Rock and roll bed – a longitudinal seat that slides into a bed. Frees the cabin by day at the cost of a nightly conversion routine.
- Table bed – a tabletop with legs that swing down to become the bed surface. Common in short wheelbase vans.
- Bench bed – a storage bench with a hinged or removable top, doubling as a seat or shoe storage.
- Sofa or futon bed – a frame that converts between upright seating and a flat sleeping surface along one wall.
- Pulldown Murphy bed – a ceiling-mounted platform that lowers vertically. Preserves floor space but eats vertical clearance.
- Bunk bed – stacked platforms for families. Needs a guard rail and a ladder on the upper deck.
- Pop-up roof bed – sleeping in the raised pop-top section of a high-roof van. Adds a bed without touching the floor plan.
Everything below the top eight entries is a component you drop onto one of those layouts, or a complete sleeping unit that avoids building anything at all.
1. Disc-O-Bed Large Convertible Double Camping Cot – The Steel Frame That Needs No Drilling
Disc-O-Bed Large Convertible 2 Person Bench & Double Camping Cot, Black
82 x 32.5 x 36 inch double cot
Anti-rust steel frame
500 lb per cot
64 lb total weight
Pros
- Holds heavy adults without flex
- Silent with no creaking
- Reconfigures between two singles bunk and bench
- Organizer attachments add under-bed storage
Cons
- About 30 lb per cot to carry
- Takes practice to assemble and disassemble
- Side sleepers may find the fabric less supportive
This is the option I recommend to anyone who does not want holes in their van. The frame is welded steel, it folds flat, and it sits on the floor rather than bolting to the chassis. In a passenger van with covered windows you have no factory holes to work with anyway, and this sidesteps that problem entirely.
At 82 inches long and 32.5 inches wide, the double configuration is a genuine two-person sleep, and owners report it holds heavy adults without any flex in the middle. There is no centre brace by design, which is what lets the fabric deck contour to your body instead of tenting in the middle.

The same frame that works as a double also works as two singles, a stacked bunk, or a bench, and the conversion takes no tools. That makes it the only unit here that genuinely earns the convertible label, which matters if you are sharing the van with a partner or a child and the second sleeper needs the floor during the day.
Organiser attachments clip on beneath the deck and create a usable shelf for the things you do not want loose. Reviewers also highlight how quiet it is, with no creaking when you get in and out or roll over at night.

Who this suits
This suits passenger van conversions, rental vans, and anyone renting rather than owning. It also works as a second sleeping surface in a van that already has a fixed platform, since you can split it into two singles and set them along the opposite wall.
For dog owners it is a good fit too, since the steel frame sits high enough off the floor to leave a gap and the cot fabric sheds hair more easily than a fitted mattress cover.
Where it falls short
The weight is the real constraint. Each cot is roughly 30 lb and the pair together weigh 64 lb, which makes this a car-camping answer rather than something you lift in and out of a garage every weekend.
Second, the fabric deck is not a mattress. Side sleepers who like a cushioned surface often add a thin pad, and some reviewers report that the side organisers shown in the product photos did not arrive in their box.
2. Zinus 8 Inch Short Queen Memory Foam Mattress – The Most Reviewed Short Queen Here
Zinus 8 Inch Short Queen Ultima RV Memory Foam Mattress, Medium Firm Feel
60 x 74 inch short queen
8 inch profile
44.4 lb weight
500 lb maximum weight
Pros
- Short queen fits standard van and RV platforms
- 8 in profile suits tight platform heights
- 7-zone support relieves hip and shoulder pressure
- Certified foam with minimal odor
Cons
- Needs 24 to 72 hours to fully expand
- Memory foam feel suits few sleepers who want springiness
- 500 lb weight limit is modest
This is the highest review count of anything in the roundup, and that volume matters because it means the sizing claims have been tested by a lot of people. The 60 by 74 inch footprint is short queen, the standard van and RV platform size, so it drops onto a deck built to those dimensions with nothing to trim.
The 8 inch profile is the reason it works in a van. A standard queen mattress is too tall for a low platform, and a 12 inch mattress eats the headroom you need to sit up in the morning. Eight inches leaves a usable gap above the deck on most builds.

Inside there is a seven zone comfort system that moulds to the hips, shoulders and neck, which is the part that stops you waking up stiff after a night on a plywood deck. The foam and cover are both certified, and the green tea and charcoal infusions do noticeable work on the new foam smell that fills a closed van for the first week.
It ships compressed in a smaller box, which matters in a real conversion. Getting a full size mattress through a rear door opening and past the wheel arches is awkward, and a boxed mattress is one person job rather than two.

Who this suits
Couples or solo builders who want a proven mattress rather than an experiment. If your platform is built to short queen dimensions and you sleep on your back or on your side, this is the safe pick, and the 500 lb limit covers nearly every combination of two adults.
It also suits anyone who will not wait. Budget another day of living around an unexpanded mattress before your first trip, because the foam needs its full window.
Where it falls short
The 24 to 72 hour expansion requirement catches people out more than any other specification on this list. Plan the mattress delivery for the day before you plan to sleep in the van.
The feel is memory foam, which means it is not going to please someone who prefers a bouncier innerspring surface, and the 500 lb ceiling is lower than several other mattresses here.
3. MLILY 8 Inch Short Queen RV Gel Mattress – Best Pick for Hot Climates
MLILY Short Queen RV Mattress in a Box, 8 inch Mattresses for RVs, Campers & Trailers, Green Tea Memory Foam Mattress for Cool Sleep & Pressure Relief, Medium, 60″ x 75″
60 x 75 inch short queen
8 inch profile
34 lb weight
750 lb weight capacity
Pros
- Gel infusion moves heat away in a warm van
- Short queen sizing built for RV and camper frames
- Light 34 lb weight is easy to handle
- 750 lb capacity covers larger sleepers
Cons
- 8 inch profile feels thin for heavier sleepers
- Memory foam still holds more heat than a coil unit
- Some initial off-gassing is normal
A van interior in summer gets very hot, and memory foam is the first thing people blame. This one takes that complaint seriously with a gel infusion through the foam, and it is the reason I keep coming back to it for desert and southern builds.
The 60 by 75 inch footprint is a touch longer than the other short queens here, so measure your platform before you order. That extra inch of length is useful for a taller sleeper and useless if your deck is built 60 by 74.

Medium firmness, rated around five out of ten, sits in the middle between plush and firm and is the most forgiving choice for two people with different preferences sharing one mattress. The four layer build includes a high density base that resists the sagging you get when a foam mattress sits on an unsupported span.
At 34 lb it is the second lightest mattress in this roundup, and during a solo build that is a real advantage. You can rotate it, lift it to check the deck underneath, and move it in or out without recruiting help.

Who this suits
Warm climate builds, or anyone who has already fought a midday van temperature problem. If you are adding a fan or a roof vent rather than air conditioning, this mattress works with that strategy instead of against it.
It also suits builds where two adults share a platform and you want a single weight limit that comfortably covers both of you, since 750 lb leaves far more headroom than the 500 lb alternatives.
Where it falls short
Eight inches is a working profile, not a plush one. Heavier sleepers who like to sink into a mattress will find it shallower than the 10 inch and 12 inch options later in this list.
The cooling gel helps, but it does not change the underlying character of memory foam, and reviewers do still report heat retention on the hottest nights. New foam smell is normal for the first few days.
4. Dyonery 10 Inch Short Queen RV Mattress – Best Pick for Extra Cushion
Dyonery RV Mattress Short Queen 10 Inch Gel Memory Foam Medium Support
60 x 75 inch short queen
10 inch profile
51 lb weight
Made in the USA
Pros
- Noticeably more cushion than an 8 inch short queen
- Gel top layer balances softness with support
- High density base reduces sagging
- Breathable cover suits warm climates
Cons
- 51 lb is a two-person lift
- Needs 24 to 72 hours to expand
- Medium feel suits neither very firm nor very plush sleepers
This is the option to pick when your platform height leaves you with room to spare and you want the bed to feel like a bed rather than a padded board. The extra two inches of profile is the entire point, and it ranks second in its category, which tells you how thin the alternative options are.
Ten inches works well on a raised platform bed in a high roof van. Sitting up in the morning, the extra thickness gives you something to lean against, and it works as well for reading in bed as it does for sleeping flat.

The build is a gel memory foam comfort layer over a responsive transition foam, sitting on a high density base that holds its shape and keeps the edge usable. That base matters more than it sounds, because a foam mattress on a long span will dish in the middle over a season of use if there is no dense layer resisting it.
The outer cover is a breathable blend with a fiberglass free flame retardant inner barrier, and the whole thing is made in the USA with certified foam and a ten year limited warranty.

Who this suits
Side sleepers and anyone with a back complaint who wants more give than an 8 inch firm mattress gives. It also suits builds where the bed sits high in a high roof van and the sleeping surface is also the daytime lounging surface.
If you build with an aluminium frame and a plywood deck that can flex slightly, the dense base layer here helps absorb movement that a thinner all-foam mattress would amplify.
Where it falls short
Fifty one pounds is a two-person lift. That is fine once the build is finished, and irritating every time you want to strip the van for a weekend trip with friends.
The return window closes once the box is opened, and the 24 to 72 hour expansion applies, so do not open it until you are ready to commit.
5. Celestial Sleep 8 Inch Firm RV Short Queen – Best Pick for Back Sleepers
Celestial Sleep 8 Inch RV Short Queen Mattress, Made in The USA, CertiPUR-US®, Oeko-Tex®, and Fiberglass-Free™ Certified Cooling Memory Foam Camper Bed – Firm
60 x 75 inch short queen
8 inch firm profile
50.8 lb weight
750 lb capacity
Pros
- Firm feel gives noticeably better support for back pain
- Cooling gel beads help in hot camper interiors
- Sleepable within about four hours of unrolling
- 750 lb capacity suits larger sleepers
Cons
- Firm version feels softer than the label implies
- Some buyers report durability concerns within a year
- Heaviest of the 8 inch options at 50.8 lb
This is the firm option, and it earns its place because almost everything else in the roundup is medium or medium-plush. Back sleepers and anyone replacing a spring mattress find the firmer surface gives noticeably better support through the lower back.
The cooling gel bead infusion and heat-wicking quilted cover are the features that matter most in a van, because a firm mattress runs hotter than a plush one and a closed van holds that heat after sunset.

The cover unzips and the mattress unrolls, with no assembly of any kind. Reviewers report being able to sleep on it roughly four hours after unrolling, which is the fastest start time of any boxed mattress here.
At 750 lb weight capacity it handles a wide range of sleepers, and the layered construction puts a comfort layer over a base layer so it does not feel like a board.

Who this suits
Back sleepers, stomach sleepers, and anyone who finds plush mattresses push their spine out of alignment. If you have spent years on a firm innerspring and want the same feel with less motion transfer, this is the closest match here.
It also works for short trips where you want to unbox and sleep the same day rather than devoting a day to expansion.
Where it falls short
It carries the lowest average rating in this roundup at 4.2, and the one star share is higher than the rest. The complaint is almost always that the firm version is softer than the label implies, so if you need genuinely hard, look elsewhere.
A small number of buyers also report durability falling short within a year, and at 50.8 lb it is the heaviest of the 8 inch mattresses here.
6. Pataku Folding Bed with 5 Inch Memory Foam – Best Pick for Solo Travelers
Pataku Folding Bed with Mattress, 75″x31″ Roll Away Frame, 5″ Memory Foam
75 x 31.5 inch footprint
Folds to 14 inches
47.2 lb weight
450 lb frame capacity
Pros
- Folds to 14 inches so one person can set it up
- Lockable casters roll it out of the way
- Steel frame is steady with no squeaking
- Washable zippered mattress cover
Cons
- 31 inch width is narrower than a standard single bed
- 5 inch mattress is thinner than some expect
- Pillow not included
This is the sensible solo answer. At 75 by 31 inches it fits crosswise behind a seat in a short wheelbase van where a fixed transverse platform will not, and the 13 inch raised legs give you a real storage void underneath rather than a solid deck.
It folds to 14 inches and rolls on four lockable swivel casters, so one person can move it from the aisle to the sleeping position and back. That matters in a van where the same floor has to be a kitchen by day.

The included 5 inch memory foam mattress is the upgrade over a bare folding cot, and the zippered cover comes off for machine washing. That is a real advantage over a fixed mattress in a van, where fabric inevitably picks up cooking smell and road dust.
Underneath, the all steel frame carries 450 lb and the rubber leg rings grip the van floor, which stops it sliding on a smooth metal or coated surface when you move around in the night.

Who this suits
A solo traveller in a short wheelbase or low roof van where a full width platform is impossible. It also works as a guest bed in a van that already has a permanent platform for the owner, and as a second surface for a child.
Anyone who wants the floor free during the day will appreciate the casters more than the mattress itself, since the whole unit moves aside in seconds.
Where it falls short
Thirty one inches is genuinely narrow. It fits standard cot size sheets, but anyone broad across the shoulders will feel the rails, and it is a single sleeper bed with no room to share.
At 47.2 lb it is still heavy to carry up stairs, and no pillow is included.
7. Avenco 4 Inch Trifold Mattress Topper – Best Pick for Fast Setup and Small Payload
Avenco Folding Mattress Topper, 4 Inch Trifold Mattress, Full Size Folding Mattress for Indoors, RV/Camper Van, Travel, Camping, Guest Room-Breathable Cover & Non-Slip Bottom
74.8 x 53.9 inch full size
4 inch profile
16.9 lb weight
CertiPUR-US foam
Pros
- Lightest unit in the roundup at 16.9 lb
- Anti-slip bottom holds on smooth van floors
- Cover unzips and goes straight in a washing machine
- Works as a topper or a standalone floor pad
Cons
- 4 inch profile is thin for a primary bed
- 132 lb weight capacity is well below heavier sleepers
- Needs 24 to 96 hours to fully expand
Payload is the constraint that decides this one. At 16.9 lb it adds almost nothing to a loaded van, which matters when your build is already close to the door sticker figure after adding water tank, battery, cabinetry and gear.
It is also the fastest option to put away. The tri-fold design folds down small enough for a locker, and the anti-slip bottom keeps it in place on smooth van floors or tile, so it does not shuffle around every time you move.

The cover is OEKO-TEX certified, breathable, and machine washable, unclipping in seconds through a full length zipper. On a van mattress that is arguably the most useful feature on the page, since you can strip and wash the sleeping surface without a sewing machine.
Many builders use it as a topper over a thinner platform pad rather than as a bed on its own, which is how I would use it on a bench bed or a rock and roll layout with a slatted base.

Who this suits
Anyone whose payload budget is already spoken for, and anyone who wants the option of sleeping on the van floor when the bed is occupied by a guest. It works for children and for occasional second sleepers without taking up permanent space.
It also suits a build where the platform surface is solid plywood with no ventilation. Laying a foldable pad on top creates an air gap between you and the deck, which helps with the condensation problem described later in this guide.
Where it falls short
Four inches is a topper thickness, not a mattress thickness, and the 132 lb weight capacity rules out most adults as a primary sleeper. Treat it as a layer rather than a bed.
The expansion window here is the longest on the page at up to 96 hours, and the new foam smell takes two to three days to clear.
8. WanderRest 12 Inch Cool Hybrid RV Mattress – Best Pick for Motion Isolation
WanderRest 12” Cool Hybrid RV Mattress, Short Queen 60×74, Plush-Medium Gel Memory Foam & Pocketed Coil Bed for RV, Camper or Travel Trailer, Cooling Comfort, Made in USA
60 x 74 inch short queen
12 inch profile
82 lb weight
250 pocketed coils
Pros
- Pocketed coils isolate movement between two sleepers
- Cooling gel foam suited to warm interiors
- Reinforced edge is stable in a narrow footprint
- Ten year limited warranty
Cons
- 12 inch profile is the tallest here and may not clear a low deck
- 82 lb weight requires two people to move
- Plush-medium feel suits few who want a firm surface
This is the one to consider when two people share the bed and one of you is a restless sleeper. The pocketed coil base means movement on one side does not travel across the mattress, which is the single biggest upgrade a hybrid gives you over an all foam deck.
It is also the only mattress here with a spring base, and that changes the platform requirements. A coil unit needs continuous support under the full footprint rather than slats with wide gaps, so you would deck the platform solid rather than slatted.

The five layer foam stack over 250 individually wrapped coils is plush-medium rather than truly plush, and the reinforced high density edge gives you a usable boundary to sit against. In a narrow van footprint the edge is what you use every morning when you are pulling your feet back under the covers.
Cooling gel foam sits on top and responds to body temperature to move heat away, which is why this scores well in hot interior conditions despite the deep profile.

Who this suits
A couple sharing a short queen platform where one partner moves a lot in their sleep. It is also the pick if you like the feel of a traditional mattress but want the contouring of foam on top.
High roof builds with a high platform have the clearance for a 12 inch profile, and that height is what makes a deep mattress practical.
Where it falls short
Twelve inches is the tallest unit in this roundup, and it will not clear a low profile platform bed or a low roof van. Measure your deck to mattress clearance before committing.
At 82 lb it is a two-person lift every single time, and the plush-medium feel will not satisfy anyone who wants a firm sleeping surface.
9. Vamcheer 6 Inch Full Size Folding Mattress – Best Pick for Stowaway Sleep
Vamcheer Folding Mattress Full Size Foldable Mattress 6 Inch 73″x52″x6″
73 x 52 inch full size
6 inch profile
26.6 lb weight
Three-section tri-fold
Pros
- Thicker than most folding pads at 6 inches
- Two layer foam gives a balanced medium-firm feel
- Three-section fold with a carry handle
- Breathable mesh side panels and non-slip bottom
Cons
- Can take up to 7 days to fully expand
- 73 x 52 in is wider than a short queen RV footprint
- Foam only build has no edge support
Six inches is unusually deep for a folding mattress, and that thickness is what separates this from the cheaper tri-fold pads that feel like a gym mat. The build is one inch of memory foam over five inches of resilient support foam, which gives it a medium-firm feel that holds up over months rather than weeks.
The three-section fold with a carry handle is the practical part. It splits into thirds rather than folding in half, so it fits into a tall locker or a rear storage compartment in a way a single fold will not.

The cover is removable through a hidden zipper, machine washable, and the side panels are breathable 3D mesh, which is a genuine advantage on a van floor where a mattress sits directly on cool metal at night.
At 26.6 lb it is light enough for one person to move around the van, which is what makes it usable as a second sleeping surface rather than a permanent fixture.

Who this suits
Builders who want a full width sleeping option that disappears into storage when friends are aboard, and anyone who sleeps on the van floor on occasion rather than nightly.
It also suits a van with a bench bed where you want more cushion than slats give you without building a hinged platform.
Where it falls short
The expansion window is the longest of any product here at up to seven days, and several buyers report it feeling under-filled until the foam has fully expanded. Do not judge it in the first two days.
At 73 by 52 inches it is a full size footprint, wider than a short queen, so it overhangs a platform built for RV dimensions. Foam only construction also has no reinforced edge, so it is not a bed to sit on the side of.
10. LOBOTOU Queen Roll-Up Slat Base – Best Pick for Airflow Under the Mattress
LOBOTOU Foldable Floor Bed Frame for Japanese Futon Mattress Queen Size
78.7 x 59 inch queen
1.18 inch profile
45 lb weight
Rated to 2200 lb
Pros
- Sits 1.18 inches off the floor for airflow beneath
- Rolls flat for storage with no assembly
- Solid wood rated to 2200 lb
- Pre-installed anti-slip silent mats dampen noise
Cons
- 45 lb queen size is awkward for one person to roll
- Runs slightly wider than a mattress with exposed edges
- Unfinished wood with no stain or coating
This is the ventilation answer. At 1.18 inches off the floor the slats hold the mattress well above the deck surface, and air moves underneath instead of condensing against a solid plywood sheet. On a van bed that is the cheapest condensation control available.
It also solves the stowage problem cleanly. The slats are joined by a nylon strap, so the whole frame rolls up with no assembly and no hardware, and it can be leaned against a wall when the floor needs to be a floor.

The black anti-slip mats are already installed and dampen noise, which matters more than it sounds on a metal van floor where a bare wood frame rattles with every road joint.
Structurally it is solid 0.55 inch wood boards rated to 2200 lb, far beyond what two adults put on a bed, so the concern with slat systems of this type is not strength but fit.

Who this suits
Builders in humid climates or anyone who has already found mould under a solid plywood platform. It also suits van owners who want a bed they can remove in a minute to work on the floor underneath, such as a wheel arch storage build or a plumbing install.
It pairs well with a futon style or foam mattress, since both need airflow beneath them more than an innerspring mattress does.
Where it falls short
It is a queen at 78.7 by 59 inches, wider than a short queen mattress, so the slats will overhang unless you trim them. Trimming a solid wood roll-up frame is straightforward but it is one more job.
At 45 lb it is not a one-person roll in a tight space, and the finish is unfinished natural wood that some buyers describe as rough with unsanded edges. Sand it before you put a mattress on it.
How to Choose a Camper Van Bed for Your Build
Measure bed height and headroom before you cut anything
Work out the clearance between your proposed deck surface and the van roof, then subtract the mattress profile you are buying. Sitting up in the morning needs roughly 24 inches of clearance above the mattress, and getting dressed needs closer to 40. Below about 30 inches of total clearance, a permanent high platform makes the van unusable as living space during the day.
The other measurement that catches people is lateral width. Aluminium or steel side rails cost about an inch and a half per side, which is enough to stop a fridge or a drawer unit from fitting in the garage you designed on paper. Measure the inside of your finished frame, not the van.
Sleeping length is the third number. Two adults usually want a short queen at 74 to 75 inches of usable length, and anything shorter turns into feet hanging off the end.
Plywood vs 80/20 aluminum vs steel
Three materials dominate DIY van beds and each fails differently.
Plywood on a wood frame is the cheapest route and the one most builders end up choosing. It is quiet, it does not conduct heat, and it is easy to cut to fit around wheel arches. The drawbacks are weight and condensation, since a solid sheet against the van floor traps moisture against cold metal.
80/20 extruded aluminum is the enthusiast choice. It is lightweight, adjustable, and mounts with plusnuts and socket cap bolts rather than wood screws into end grain. It also conducts heat straight from the chassis into your sleeping area, which builders in hot climates have to solve with a thermal break, and it needs thread locker because the joints loosen and squeak on rough roads otherwise.
Steel is the strongest and heaviest, and it is what the Disc-O-Bed frame uses. It suits a bolt-in or free-standing unit, and it is what you want when the platform carries a hybrid coil mattress.
How much load the platform has to carry
A sleeping platform on a van rarely carries more than 500 lb in practice, which is roughly two adults plus a mattress. The engineering problem is not total weight but span. A deck that spans 70 inches unsupported across the van bows in the middle every time someone gets into bed, and a bowed deck is what makes a foam mattress dish and a coil mattress crease.
Two ways to fix it. Add a centre vertical support under the span, or accept a shorter usable length by building the bed between the wheel arches instead of over them. Many builders never do this math and simply add a support post when the deck starts to feel soft after a few months.
For plywood, use a half inch sheet with support spacing close enough that the sheet does not visibly flex between joists, and screw it from underneath with structural screws rather than tapping into the top face.
Matching the bed to your van model
Bed availability varies sharply by van. A Ford Transit or Ram ProMaster in high roof configuration gives you a long enough bay for a short queen across the full width. A short wheelbase Transit fits a mattress across the width but sacrifices length, so a custom long-width mattress or a lengthwise rock and roll layout is often the better answer.
A Mercedes Sprinter high roof has the longest continuous bay of the common vans and suits a platform with an extension beyond the wheel arches. A Volkswagen T4 or T5 high roof is narrower and shorter, so bed length becomes the constraint rather than width.
Passenger vans are the awkward case. Covering the factory windows leaves no metal wall to bolt a side rail to, which is exactly where a free-standing or bed-mounted unit like a folding cot earns its place. The Nissan NV200 is narrow enough that many builders use a lengthwise bed rather than a transverse one.
Ventilation and condensation under the deck
Condensation is the most common long term complaint on van builds, and it is a ventilation problem rather than a material problem. Warm damp air from sleeping and cooking meets a cold deck surface and the water has nowhere to go but into your plywood or your mattress.
Three fixes, in order of cost. Drill ventilation holes through a plywood deck so air moves on both sides. Use a slat deck instead of a solid sheet, which is why the roll-up slat base appears in this roundup. Or add a breathable layer between the mattress and the deck, such as a washable topper on a foldable pad.
If you run aluminium, add an insulator between the frame and the van floor to break the thermal path from the chassis. In desert builds this is not optional.
While you are planning the garage, remember what goes under the deck. Fridges, composting toilets, and locking storage slides all compete for the same volume, and it is worth checking clearance against our compressor fridge picks and composting toilet guide before you fix your deck height, because both set their own vertical requirements.
Frequently Asked Questions
How much weight can a camper van bed platform hold?
A sleeping platform realistically carries two adults and a mattress, so roughly 500 lb. The harder problem is span. A deck unsupported across about 70 inches bows when someone sits on the edge, which is what makes a foam mattress dish over time. Either add a centre support post under the span or shorten the bed so it runs between the wheel arches instead of over them.
How high should my van bed be?
Aim for enough clearance that you can sit up in the morning, which is roughly 24 inches above the mattress surface. Add an 8 inch mattress profile and the deck needs about 32 inches of interior height at the sleeping bay. In a low roof van, build the platform lower and accept less garage height. Check your garage contents, fridge and toilet clearances before you fix the deck height.
Is 80/20 extruded aluminum strong enough for a van bed?
Yes. Fifteen series extrusion is widely used for van bed frames and carries two adults comfortably, and the frame is usually not the weak point. The issues builders report are heat conduction from the chassis through the aluminium into the sleeping area, and joints loosening and squeaking on rough roads. Use thread locker on every bolt and add an insulator between the frame and the van floor in hot climates.
What plywood thickness should I use for a van bed platform?
Half inch plywood is the standard choice for a bed deck. It holds a mattress without visible flex between joists and stays light enough not to eat your payload budget. Thinner three quarter inch sheet is fine for an under-bed cabinet door but will ripple on a sleeping surface. Fix the sheet from underneath with structural screws so you are not tapping screws into the top face that you sleep on.
Fixed bed or convertible bed for a van?
A fixed platform gives you the most garage space and the largest storage volume, but it permanently removes that floor from living space. A convertible layout such as a rock and roll bed gives you the cabin by day and costs you a nightly conversion routine. Solo travellers and full time residents usually accept the fixed layout. Families and weekend users tend to prefer convertible because the van still works when nobody is sleeping in it.
The Verdict on Camper Van Beds for DIY Conversions in 2026
If you want one decision to make this month, the Disc-O-Bed convertible cot is our pick for best camper van beds for DIY conversions because it removes the hardest constraint of all. It asks nothing of your van. No chassis holes, no thermal bridging, no drilling, and it converts between two singles, a bunk and a bench in seconds.
Where you have already decided on a fixed platform, the mattress choice becomes simpler. Zinus gives you the most proven short queen footprint, MLILY gives you the best hot climate performance and the highest weight capacity, and Dyonery gives you the deepest cushion if your deck height allows it.
Pick your layout before you pick a product, measure your clearances twice, and remember that the space under the bed is the space your garage competes for. Once the deck is framed, you can pick up a fire blanket for the galley and get back to the build.








