Campervan Welding: What to Expect From a Professional Repair

Getting welding work done on your campervan can feel daunting — especially if you've never had it done before. What does the process actually involve? How do you know if the work has been done properly? And how do you find someone you can trust?

This guide walks you through what professional campervan welding looks like from start to finish, so you know exactly what to expect.

Why Campervans Need Specialist Welding

Not all welding is the same, and not all welders are equally suited to campervan work.

Campervans — whether classic VW Transporters, modern conversions, or factory-built leisure vehicles — have specific structural characteristics that require experience to work with correctly. The panels are often thinner than on commercial vehicles. The floor structure combines steel and timber. And the habitation area introduces additional complexity around insulation, wiring, and interior fittings.

A welder who primarily works on agricultural machinery or structural steelwork may not have the experience to work sensitively on a campervan body. You want someone who understands the vehicle, knows where the structural elements are, and can carry out repairs that are both strong and sympathetic to the original construction.

Step 1: The Initial Assessment

A professional repair always starts with a thorough assessment. This is more than a quick look — it involves getting underneath the vehicle, probing the metal, and checking all the areas that are prone to corrosion.

For a campervan, the key areas to inspect include:

• The chassis and outriggers — the main structural frame
• Sill sections — the lower body panels that run along the sides
• Wheel arches — a classic rust trap on older campervans
• Floor sections — both the steel floor pan and the bearers underneath
• Door bottoms and lower body panels — where water collects and sits

A good assessor will be honest with you about what they find. They'll tell you what needs immediate attention, what can wait, and what the repair will realistically involve. Be wary of anyone who gives you a quote without getting properly underneath the vehicle.

Step 2: The Quote

Once the assessment is complete, you should receive a clear, itemised quote. This should tell you:

• Exactly what work is being carried out
• Which areas of the vehicle are being repaired
• What materials will be used
• How long the work is expected to take

A reputable repairer won't give you a vague "we'll see how it goes" estimate. While it's true that rust can sometimes be worse than it appears once you start cutting, a good specialist will give you a realistic range and communicate clearly if anything unexpected comes up during the work.

Step 3: Cutting Out the Rust

The repair itself begins with cutting out all the corroded metal. This is a critical step — and one where corners are sometimes cut.

Proper rust repair means removing all the affected metal, back to clean, solid steel. Leaving any rusted material behind means the corrosion will continue to spread underneath the new repair. Within a year or two, you'll be back to square one.

This stage can look alarming — seeing large sections of your campervan's floor or sill cut away is unsettling. But it's necessary. The size of the hole is a reflection of how far the rust had spread, not a sign that something has gone wrong.

Step 4: Fabricating and Welding in New Metal

With the rusted sections removed, the repairer fabricates replacement panels from new steel. This involves cutting and shaping the metal to match the original profile — a process that requires both skill and patience.

The new sections are then welded in using MIG welding (the most common method for bodywork repairs) or TIG welding for more precise work. A good weld is clean, consistent, and fully penetrates the joint — creating a repair that's as strong as the original metal, or stronger.

You should be able to see the welds. Ask to inspect the work before any underseal or paint is applied. Good welds are neat and even.

Step 5: Treating and Protecting the Repair

Once the welding is complete, the repair needs to be treated and protected to prevent future corrosion.

This typically involves:

• Rust inhibitor — applied to the weld area and any surrounding metal to neutralise any remaining surface rust
• Weld-through primer — applied before welding in some cases to protect the joint from the inside
• Underseal — a thick, rubberised coating applied to the underside to protect against road spray and moisture

The quality of the protection applied at this stage has a significant impact on how long the repair lasts. A well-protected repair, combined with regular maintenance, should give you many years of trouble-free use.

What Good Work Looks Like

When the job is done, here's what you should see:

• Clean, consistent welds — no excessive spatter, no burn-through, no gaps
• Smooth transitions — the new metal should blend into the surrounding panels.
• Full underseal coverage — the repaired area and surrounding metal should be fully coated
• No visible rust — the area should be clean and free of any remaining corrosion

Ask your repairer to walk you through the completed work. A confident, experienced specialist will be happy to show you what they've done and explain the repair.

How to Choose the Right Specialist

When looking for a campervan welding specialist, consider the following:

Experience with campervans specifically. Ask whether they regularly work on campervans and motorhomes, or whether this is outside their usual work. Specialist experience matters.

Willingness to do a proper assessment. A repairer who quotes without getting underneath the vehicle isn't giving you an accurate picture.

Clear, itemised quotes. Vague estimates are a red flag. You should know exactly what you're paying for.

Transparency about the work. A good repairer will show you the rust before they start and the repair when it's done. They won't rush you or make you feel like you're asking too many questions.

Local reputation. Word of mouth matters. Ask in campervan owner groups or forums for recommendations in your area.

Getting Your Campervan Repaired in the North East

At Hadrian Auto Welding, we carry out welding repairs on campervans and motorhomes from our workshop in Hexham, Northumberland. We serve owners across the North East — from Tyneside and Wearside to the Scottish Borders.

We start every job with a thorough assessment, give you a clear and honest quote, and carry out the work to a standard we're proud to stand behind.

Find out more about our campervan and motorhome welding services