Choose the Right Campervan Windows
Choosing the right windows for your campervan isn’t only about how it looks from the outside. It changes how bright the interior feels, how easily you can create a cross-breeze while cooking, how much condensation you wake up to and how much heat (or cool air) you lose through the walls.
In this guide we’ll cover:
- The main types of campervan windows (and who each type suits best)
- How to reduce heat loss and condensation around windows
- How to install windows step-by-step without ruining the bodywork
- Common mistakes we see (and a few we’ve made ourselves…)
You’ll also see practical tips in bullet points, but we’ll keep the tone calm and hands-on, because windows are one of those things that’s simple in theory and slightly nerve-wracking in real life (you are cutting a hole in your van, after all).
Questions this guide answers
- How can I improve insulation and reduce heat loss through windows?
- What’s the difference between the various campervan window types?
- How do I install windows properly without damaging the van?
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Why Windows Matter More Than Most People Think
For most DIY builders, installing windows is almost essential. Not only because the van becomes a nicer place to be (light + view = less “metal box” feeling), but because ventilation becomes so much easier when you can create natural airflow.
Here’s a small paradox: buying a panel van without factory windows can feel like a downside, but it’s often a lucky win. You get to decide:
- where the light comes in
- where you actually want to ventilate
- where you don’t want people peeking in (we’re looking at you, “curious walkers” on campsites)
Many factory rear-door windows are also thin and can’t be opened. That’s fine for daylight, but they can be cold in winter, hot in summer… and when you finally want fresh air, it’s suddenly impossible.
One important note on rules
Regulations and inspection practices vary between countries and even between different vehicle types. Window glazing often has safety requirements depending on location in the vehicle. For example, the Swedish Transport Agency (Transportstyrelsen) has specific requirements for glazing outside the driver’s cab in motor caravans.
Bottom line: build smart, but always double-check what applies where you live before you order windows.
Types of Campervan Windows
When you choose windows, you’re usually balancing four things:
- Ventilation
- Privacy
- Insulation / condensation
- Budget + long-term maintenance
Below are the most common window types and how they affect comfort and practicality.
A quick reality check on sliding windows
Sliding windows have one big downside: many travellers we’ve met who use them say they’re rain-sensitive and can be tricky to keep properly watertight over time.
Our stealth van lesson (learn from our mistake)
Our first converted campervan was meant to be a “stealth campervan”, discreet city parking, no obvious camper features. That meant no windows and no roof vent, just wind deflectors.
Let’s put it this way: cooking smells mixed with damp air is not a good vibe. It felt like living inside a mushroom farm on wheels.
If you want a stealth build, plan to cook outside when you can and seriously consider at least a roof vent.
The moment we discovered awning-style ventilation windows
When we found awning/ventilation windows, it felt like discovering the holy grail. They hinge at the top and open outward at the bottom, which means you can often keep them open even when it’s raining (as long as it’s not blowing sideways like a storm).
“Luxury” hinged windows for curved walls
Then there are the more premium hinged windows made for curved panels. They look great, but the internet is full of horror stories. They’re also often about twice the price of more basic options.
Honestly? We still prefer the simpler, functional ventilation windows. They’re practical, reliable, and they blended into our build like they’d always been there.
Keeping the Right Temperature Inside Your Campervan
Yes, you can install expensive heating systems or AC. But we’ve noticed many people underestimate how far you can get with simple habits and cheap solutions. These small tweaks can save you a lot of money and make vanlife far more comfortable.
Save money on heating
- Park in sunny spots in winter (your windows become free solar gain).
- Use blackout curtains / insulated covers at night to keep warmth in.
- Make DIY window insulation panels (reflective insulation like bubble wrap with aluminium foil works surprisingly well).
Save money on passive cooling
- Park in shade and create a proper cross-breeze.
- Use USB fans to keep air moving.
- Dump heat fast: open a door + a window on the opposite side for airflow.
- DIY roof ventilation: a simple fan solution in a vent opening can make a huge difference in still, hot weather.
It sounds basic, but these little things can save both money and sleepless nights.
Let’s Get Practical: Options First, Then Installation
Next we’ll go into detail. First we’ll break down the window options on the market with clear pros and cons. Then we’ll show – step by step – how we installed our own windows. It was exciting… and a little terrifying (because yes, you’re cutting a hole in your beloved van).
And just to repeat the most important reminder: check the rules for your vehicle in your country. Regulations vary, and the last thing you want is inspection trouble. At the end, we’ll also share the products and tools we used.
Let’s get started.
Campervan Window Types (Detailed)
Bonded Glass Windows – Flush / Stealth Look
Bonded windows are usually single-glazed glass and are glued directly onto the van body. They can be a bit tricky to install yourself and if you’re unsure, it may be worth using a professional installer. They sit almost flush with the bodywork and can look factory-fitted, which is perfect if you want to keep your conversion “under the radar”.
Best for you if: you want a clean, discreet look and can live with more condensation or you’re prepared to actively manage insulation and privacy.
Pros
- Very “OEM” look, sits close to the body.
- Often cheaper to buy than some premium opening window options.
- Small imperfections in your cut can be hidden by trim/adhesive (but don’t get sloppy!).
Cons
- Single glazing can cause more condensation and cold drafts.
- If someone really wants in, glass is easier to smash than acrylic.
- Installation must be careful, poor bonding = leak risk.
Acrylic Windows – The Practical All-Rounder
Domestic Seitz is one of the best-known brands for acrylic camper windows. They typically have a lightweight aluminium frame and double acrylic glazing. They’re fairly easy to install, but they usually protrude from the side of the van a little. The S7P window has a aluminum frame and dark-tinted double acrylic glazing.
Because they’re originally designed for motorhomes (which have thicker wall panels), you’ll usually need to build a wooden frame first when fitting them in a panel van.
Best for you if: you want a proven, warm, practical solution with minimal DIY hassle inside the van.
Pros
- Double glazing helps reduce condensation and improves insulation.
- Built-in flyscreen + blackout blind (huge bonus).
- Not glass → reduced risk of dangerous shards.
Cons
- Sticks out more from the body → less stealthy.
- Often needs a support frame in a van (wall thickness).
- Needs good sealing and preferably a flatter surface.
Polyvision Windows – Sleeker, More Modern Acrylic Style
Polyvision windows are similar to acrylic windows but look more modern and slimline. They sit closer to the bodywork. Like acrylic windows, they need a thicker “wall” to clamp onto safely, so a wooden frame/support build-up is usually required.
Best for you if: you want the comfort benefits of double acrylic with a cleaner, slimmer look.
Pros
- Double glazing → better comfort and less condensation.
- Integrated flyscreen + blackout blind.
- Easy installation once the wall build-up is correct.
Cons
- Usually more expensive.
- Can be fussier on uneven/curved surfaces.
- Acrylic can scratch and dull over time if you’re not careful.
Sliding Windows – Budget-Friendly Ventilation
Sliding windows open by moving one panel sideways. They’re a popular “good value ventilation” option.
Pros
- Often the cheapest opening window type.
- Simple to use.
Cons
- Can be rain-sensitive when left open
- Seal quality varies massively between brands, poor quality can mean years of annoying small problems.
Fixed Windows – Cheap Light, No Ventilation
Fixed windows are permanent and can’t be opened. They’re one of the simplest and most common choices.
Pros
- Cheapest option – often half the price (or less) of opening windows.
- No moving parts or seals → minimal maintenance.
Cons
- No ventilation.
- You’ll need other ways to manage airflow.
Awning / Top – Hinged Windows
These hinge at the top and open outward, which allows them to stay open in rain more easily.
Pros
- Great in rain – water runs off rather than pooling.
- Often feels more watertight than some sliding options.
Cons
- More moving parts.
- More expensive.
Ventilating Your Campervan (Without Going Overboard)
It’s easy to get “window hungry”. But in practice, you rarely need lots of opening windows to get good airflow.
A solid ventilation setup is usually:
- One opening window on each side for cross-ventilation
- Plus a roof vent or roof fan (strongly recommended if you cook inside)
Opening windows cost more and the seals will eventually wear. Filling your van with only opening windows can become unnecessarily expensive and add future maintenance headaches.
Window Size:
Light vs Insulation vs Privacy
Big windows are amazing for light and views, but they can also:
- Be a more attractive target for break-ins
- Increase heat loss (a “weak point” in insulation)
- Increase privacy issues (the “glass house” effect)
Our personal preference is a practical compromise:
- A larger sliding window in the side door
- A smaller sliding window near the stove
That small kitchen window adds light and gives extra ventilation while cooking, but doesn’t feel like a huge heat-loss problem in winter.
Cost vs Quality:
The Place You Don’t Want to Cheap Out
Campervan windows vary a lot in build quality. Cheap windows can work, but weaker seals and mechanisms often mean more issues later.
And here’s the core truth:
A leaking window is a nightmare.
Not just because water drips, but because moisture creeps into walls, insulation, and timber. “Just replacing the window” is rarely a quick job.
A higher budget can also give you:
- Safer material solutions depending on placement and regulations
- Tinted windows (more privacy + sometimes better summer comfort)
- Better double glazing / acrylic solutions to reduce condensation
Step 1: Tools and Materials
Before you start, make sure you have everything ready. A typical window installation kit and toolbox includes:
- Glass activator / cleaner
- Primer (for glass/metal depending on your system)
- Adhesive (PU adhesive is common for vehicle use)
- Latex gloves
- Cardboard (for a template)
- Drill + jigsaw with a metal blade
- File / sandpaper
- Rust protection / primer paint for cut edges
- Tarp/blanket inside the van (to catch metal shavings)
Once everything is ready, you can create your cardboard template and possibly a wooden frame/support build-up.
Support Frame (Wall Thickness Build-Up)
Many windows are designed for motorhome walls and install best at around 30 mm wall thickness. A panel van doesn’t have that, it’s thin, often around a millimetre. So you build up thickness with a support frame.
How we did it
- Timber battens around 30 mm
- Test-fit against the van’s curved shape
- Sand/shape until it sits flush
- Bond/mount the frame so it’s stable and straight
Step 2: Make a Template
Take a large piece of cardboard and trace the outer outline of your window. Then draw a second, smaller outline 5–7 cm inside the first one. That inner outline represents the hole you’ll cut in the van wall. The extra margin is needed for bonding and mounting.
Tip: some window suppliers include a template, use it if you have one, but measure and double-check anyway.
Step 3: Mark the Window Position
Tape the cardboard template to the outside of the van where you want the window. Use a permanent marker to trace the outline onto the van.
Tip: measure from multiple reference points (door edges, body lines/creases). It’s easy to “eyeball straight” and end up 10 mm off.
Also check that the window won’t land in a problematic spot, for example, interfering with structure, wiring, or your interior layout.
Step 4: Drill Pilot Holes
Drill small pilot holes along the marked line. These holes help guide the jigsaw cut. Put a tarp or blanket inside the van to catch metal shavings.
Tip: start with small holes so you don’t accidentally drill too deep.
Step 5: Cut the Opening
Use the jigsaw to cut the hole. Apply masking tape along the cut line to protect the paint from scratches. Use a blade suitable for metal and keep the saw steady for a clean cut.
Tip: a few drops of cutting fluid while sawing can reduce heat and help you get a smoother cut.
Step 6: Smooth and Treat the Edges
After cutting, the edges will be sharp and they’ll rust if you don’t treat them properly. File/sand the edges smooth. Then apply rust protection / primer paint to the exposed metal.
Tip: make sure the surface is smooth before adhesive work for the best bond.
Step 7: Apply the Adhesive
Use the adhesive from your kit and apply it around the edge of the opening. Apply evenly and use enough product to ensure proper bonding.
Step 8: Fit the Window
Carefully place the window into the opening and press it into position. If your kit includes mounting clamps, use them to keep the window secure while the adhesive cures.
Wipe away excess adhesive before it hardens.
Step 9: Let It Cure
Let the adhesive cure fully before doing anything else. The recommended cure time is often 24 hours. Avoid rain and extreme temperatures during this period if possible.
Tip: don’t touch or adjust the window during curing, you want the strongest bond possible.
Step 10: Check the Seal
Once cured, check that everything is watertight. Spray water on the outside and look for leaks inside. If you find any, apply additional sealant around the edges.
Tip: choose a weatherproof sealant designed for outdoor use and compatible with your window materials for long-term durability.