Ever wake up in a camper and feel like you’ve been sleeping sealed inside a greenhouse with a kettle on the boil? Yeah, we’ve been there. When you’re living in a small metal box, air can quickly turn stale, damp, and downright funky if it’s got nowhere to go. That’s why good ventilation isn’t just a nice-to-have, it’s a game-changer.
Good airflow keeps your van fresh, dry, and liveable, so trust us, you’ll notice the difference the first time you cook a fry-up or try sleeping through a muggy summer night without it.
So, let’s take a proper look at your options, what they actually do, and how to fit them without losing your cool.
Why Your Campervan Needs Ventilation
Picture this: you’re cooking dinner, it starts to rain, and the windows are shut tight. The walls begin to sweat, your breath fogs up the glass, and everything starts to feel a bit too much like a greenhouse. That’s where ventilation comes in.
It helps with:
- Moisture control (from cooking, breathing, and even just existing)
- Air circulation (so you don’t feel like you’re living in a plastic bag)
- Temperature regulation (get the warm air out and cool air in)
- Fume extraction (from gas hobs, heaters, etc.)
Skip the airflow, and you could be dealing with mouldy bedding, damp insulation, rust creeping behind your cladding, and a van that smells like socks. Not ideal. Arguably, this is one of the biggest threats to the longevity of your campervan’s interior. So, what can we do about it?
Your Ventilation Options (and How They Stack Up)
There are a few ways to go about ventilating your camper, and most folks use a combo for best results. Here are your main choices:
1. Roof Vents (With or Without Fans)
These are a top pick (pun intended). Roof vents pull stale air out and let fresh air in, working with the natural tendency for warm air to rise. You can find our suggested products here:
Quality Roof Windows for Enhanced Light and Ventilation
Popular types:
- Manual vents (like the classic mushroom vent)
- Powered vents (like the MaxxAir or Fiamma Turbo)
Pros:
- Highly effective airflow
- Fans can reverse to blow air in or out
- Some come with built-in rain covers
Cons:
- Cutting a big hole in your roof isn’t for the faint-hearted
- Powered vents use electricity (though not much)
2. Side Window Vents / Sliding Windows
These bring in fresh air from the side and pair well with a roof fan to create cross-ventilation. You can find both products here:
Durable Campervan Windows for Custom Builds | The Campervan Shop
Pros:
- Great for airflow at night
- Easy to open and close
- Adds natural light
Cons:
- More cutting, more sealing
- Privacy and security can be affected (but are fixable with curtains and locks)
3. Floor Vents
Warm air rises, cool air sinks, so floor vents can help air move naturally through the space.
Pros:
- Good for passive ventilation
- Doesn’t take up space
Cons:
- Can let in road dust or water if not properly sealed
- Risk of draughts in cold weather
4. Ventilated Skylights
These combine light and air in one neat unit. Often used in larger builds.
Pros:
- Let’s in heaps of daylight
- Natural upward airflow
Cons:
- Pricier than a standard roof vent
- Trickier to install securely
Where Should You Put Your Vents?
Here’s where a bit of planning goes a long way. You want to encourage airflow, not just create a breeze that hits your face while you sleep.
Top tips:
- Pair a roof vent with a window or floor vent to create air movement
- Place vents at opposite ends (high and low, front and back)
- Near cooking or shower areas is a must
- Avoid placing directly above your bed unless you enjoy being rained on when the lid’s open
What Happens Without Ventilation?
Lack of ventilation isn’t just uncomfortable, it’s potentially damaging. Here’s what can go wrong:
- Condensation builds up and soaks into walls
- Mould and mildew grow on fabrics and wood
- Rust forms behind insulation and on bare metal
- Poor air quality makes you feel groggy or headachy
- Gas fumes from cooking or heaters may linger dangerously
Step-by-Step: How to Install a Roof Vent
There are different types, but the basic idea is the same. Here’s how to install a common fan-style roof vent like the MaxxAir:
Tools and materials:
- Jigsaw or nibbler
- Metal file
- Mastic or butyl tape
- Sikaflex (or similar sealant)
- Drill and screws
- Roof vent kit (obviously!)
- Masking tape and measuring tape
1. Measure Twice, Cut Once
Pick your spot. Check for ribs or internal beams, then trace your cutout. Use masking tape to protect the paint.
2. Cut the Hole
Deep breath. Use your jigsaw to cut along the traced lines. File the edges smooth to prevent rust.
3. Seal Everything
Apply butyl tape around the lip of the vent and press it into place. Seal around the edges with Sikaflex.
4. Screw It Down
Secure the vent with screws (usually supplied). Tighten evenly to avoid warping the frame.
5. Wire It Up (If It’s a Fan)
Hook up the positive and negative wires to your power system. Check it works before finishing up.
6. Add Interior Trim
Fit the trim ring inside, and you’re done! Crack it open and enjoy that breeze.
The Products – Our Recommendations
You can find several great ventilation options over on our website, or if you’d rather save time, our Phase 1b bundle includes the perfect combination of our top recommended products, specific to your exact vehicle model.
[Bundle Coming Soon]
Side Windows:
Durable Campervan Windows for Custom Builds | The Campervan Shop
Skylights and Roof Vents (with or without motorised ventilation):
Quality Roof Windows for Enhanced Light and Ventilation
Final Thoughts
Ventilation isn’t a glamorous part of the build, but it’s one you’ll thank yourself for every single day. Whether it’s drying out your morning coffee steam or keeping your space livable in the middle of July, proper airflow makes all the difference.
Go for a setup that suits your lifestyle, your climate, and your confidence level. A mix of passive and powered options usually works best. And remember—it’s way easier to add vents before you’ve finished the interior.
So grab your jigsaw, plan your airflow, and let your camper breathe easy.
