Campervan Roof Vents & Fans Specialists

The UK's most comprehensive directory of campervan roof vents & fans specialists. 105 verified companies, independently rated and reviewed.

105 Specialists

4.8★ Avg Rating

3,999+ Reviews

50 Locations

Added byJoe Tannorella·Published 21 February 2026·Updated 8 July 2026

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Best Campervan Roof Vents & Fans Specialists

Ranked by verified Google ratings and customer reviews. We track 105 companies offering campervan roof vents & fans across the UK — here are the highest rated.

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★5.0(31)

Key Facts About Campervan Roof Vents & Fans

✓ A professional installation involves cutting a precise roof aperture, building a timber frame, and meticulously sealing the unit against UK weather.
✓ Expect to pay £450–£900 for a single powered fan installation, including the unit and all necessary weatherproofing materials.
✓ The fitting is typically a full-day job, allowing crucial sealant curing time before the vehicle can be safely driven.
✓ Professionals guarantee a leak-proof seal using specific tools and non-setting butyl tape, a common failure point for DIY attempts.
✓ Key options range from simple vents for passive airflow to multi-speed MaxxAir fans with rain covers for all-weather use.
✓ Effective ventilation is critical for managing condensation, which quickly leads to damp, mould, and damage to the vehicle's interior structure.
✓ For larger conversions, fitting two fans creates a powerful airflow circuit that is essential for rapid cooling and air exchange.

Why Choose Professional Campervan Roof Vents & Fans?

The biggest risk with a DIY vent installation is a permanent, slow leak. Professionals eliminate this gamble by using specific cutting templates for your van's roof, ensuring a clean opening without damaging structural ribs. They also use a multi-stage sealing process with specialist primers and automotive-grade polyurethane sealants, not just a tube of silicone. This creates a bond that flexes with the vehicle and withstands years of weather. In practice, this means avoiding the silent water damage that leads to rust and mould. A pro will also wire an extraction fan safely into your 12V electrical system with the correct fuse, preventing electrical faults.

When vetting a specialist, ask about the specific products they use. A good fitter will confidently explain their choice of sealant, like Sikaflex, and why it's superior for vehicle bodies. Inquire about their experience with your van model, as a curved Sprinter roof requires a different technique than a flat panel on a Ducato. A red flag is a workshop that can't show you detailed photos of previous installations, including tidy wiring to a fuse box. For most MaxxAir or Fiamma fan installations, expect the work to take two to five hours and cost £500 to £1,000, including the unit itself.

CamperBrain simplifies finding a trusted installer by connecting you with vetted campervan conversion companies that specialise in ventilation. The platform allows you to view portfolios of their work, confirming they can produce a clean, factory-finish look. You can also read verified reviews from other van owners, often detailing their experience with the exact fan installation you need. This process lets you compare quotes from multiple top-rated specialists in one place. As a result, you can book a fitter with proven expertise in cutting a perfectly sealed, correctly wired hole in your roof.

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Frequently Asked Questions

What is a campervan roof vent and fan installation service?

This service is all about ventilation. A specialist cuts a precise hole in your van's roof to install either a simple vent or a powered fan. Basic vents, like many from Fiamma, allow air to flow passively. Powered fans, such as the popular MaxxAir models, actively pull stale, damp air out or draw fresh air in. This means better temperature control and drastically reduced condensation, which is a major enemy of any van interior. For most builders, it’s a non-negotiable part of a comfortable and long-lasting conversion, ensuring the space stays fresh and dry.

How much does it cost to get a roof fan fitted?

Expect to pay between £500 and £1,200 for a professionally fitted roof fan. The fan unit itself accounts for a large part of this, ranging from £200 for a basic model to over £450 for a top-end unit with a remote and rain sensor. Labour makes up the rest, as the job involves cutting metal, expert waterproofing, and wiring it into your 12V electrical system. A complex ribbed roof, like on a Relay or Ducato, might cost more to fit than a flat-roofed van due to the extra custom fabrication required for a watertight seal.

How long does a roof vent or fan installation take?

A professional can usually fit a roof fan within a day. The job itself might take three to six hours, but it's the details that matter. This includes carefully measuring and cutting the aperture, treating the bare metal to prevent rust, and applying high-quality sealants. As a result, many installers will want the vehicle for a full day to allow sealants like Sikaflex to cure properly before the van is exposed to the elements. This ensures a permanent, leak-proof finish that will last for years without any issues.

Can I install a campervan roof fan myself?

You absolutely can, and it's a popular DIY conversion task. However, this is one job where a mistake is very costly. You are cutting a large hole in your van's roof. Get it wrong, and you risk persistent leaks that can ruin your insulation, woodwork, and electrics over time. A professional has the right tools, experience with different roof profiles, and knows exactly which sealants to use for a guaranteed waterproof fit. For many, the peace of mind that comes with a professional, leak-free installation is well worth the cost.

What vans are roof vents and fans suitable for?

Virtually any panel van is a candidate for a roof vent or fan. They are a standard feature in most Sprinter, Transit, and Ducato-based conversions. The key consideration is the roof profile itself. A flat roof is the most straightforward, but most vans have ribbed or curved roofs. In practice, this just means a specialist will use a custom-made or off-the-shelf mounting adapter. This creates a flat surface for the fan to sit on, ensuring a perfect, watertight seal. Even smaller vans can benefit from a correctly sized unit.

What are the main benefits of having a roof fan installed?

The benefits are huge. A good fan is the single best way to manage condensation, protecting your van from damp and mould. It pulls cooking fumes and steam straight out, keeping the interior fresh and dry. In the summer, it acts as an effective extractor fan, drawing hot air out of the van to keep you cool, especially at night. This constant air circulation makes the living space much more comfortable and healthier. For most seasoned vanlifers, a quality roof fan isn't a luxury; it's an essential piece of equipment for comfortable, all-season travel.

How do I find a good roof fan installation specialist?

Using a directory of conversion specialists by region is the easiest starting point. You can filter for companies that explicitly list ventilation or roof fan installation as a service. When you contact them, ask to see a portfolio of their previous work. Look for clear photos showing clean cuts, tidy sealant application, and professional wiring. A good installer will be proud to show you examples of their installations on vans similar to yours. This helps you gauge their experience and the quality of their finish before you commit to the work.

What should I look for in a quality roof fan installation?

A quality installation is all in the details. Externally, the sealant bead around the fan should be neat, consistent, and fully bonded, with no gaps. There should not be excessive sealant smeared over the roof. Internally, ask how they treat the cut metal edge; it must be filed smooth and painted with a rust-inhibiting primer. The wiring should be properly secured, protected in conduit or sleeving, and connected to a fused circuit. A well-made internal finishing frame also shows attention to detail, providing a clean look rather than just a raw hole in the ceiling.

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Expert Insights

"For most builders, the MaxxFan Deluxe is the default choice; its integrated rain shield allows all-weather ventilation, a critical advantage over most Fiamma models which require a separate cover."

"Don't underestimate the total cost. A professionally fitted extraction fan, properly sealed and wired, will typically range from £600 to £950, often doubling the price of the unit itself."

"One fan just moves air; two create a system. In practice, pairing an extraction fan over the galley with a simple floor or window vent creates the cross-flow needed to properly manage condensation."

"The seal is everything. A rushed installation using only silicone is guaranteed to fail, while a combination of butyl tape and a quality lap sealant ensures a flexible, waterproof bond for years."

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