Volkswagen T2 Sill Welding Repair

Rust in sill sections is a common issue on older vans, especially workhorses like the T2 that have seen years of use, weather and road grime. In this case, the corrosion had gone beyond surface rust and had eaten through the metal, leaving weakened sections and holes in the sill. Once the outer layer was opened up, the full extent of the damage became clear — and it was one of those jobs where the rust had clearly been making itself at home for quite some time.

This repair involved cutting out the rotten metal, cleaning back the surrounding area, fabricating and fitting new repair sections, welding them into place and preparing the sill so it could be protected and finished properly.

Assessing the Corrosion

When the vehicle came in, the lower sill area showed visible rust and perforation. Once work began, the weakened metal was opened up and the corrosion underneath was exposed.

As is often the case with rust repairs, what looks like a small hole from the outside can hide much more corrosion behind it. Rust has a habit of turning a “quick little job” into a full metal archaeology project. Once the affected section was cut back, the damaged metal and corrosion could be properly assessed.

The key with this kind of repair is making sure every rotten section is removed. Simply covering rust over is never a proper fix. If the weak metal is left behind, the problem will return.

Cutting Out the Damaged Metal

The corroded sill section was cut out to remove all the weakened material. This exposed the inner area and allowed the repair to be carried out on sound metal rather than trying to weld onto rusted edges.

The rusted sill section had deteriorated badly in places, so the damaged metal needed to be removed carefully and cleanly. The surrounding area was then cleaned and prepared, ready for the new steel section.

This stage is crucial because good welding starts with solid material. Metalwork is a lot like trust — if the foundation is rotten, nothing good is going to happen afterwards.

Fabricating the Repair Section

A replacement sill repair section was prepared to match the shape of the original profile. The new metal needed to line up properly with the existing sill so the repair would fit cleanly and restore strength to the area.

The repair panel was trial-fitted and adjusted before welding to make sure the edges, contours and joins sat correctly. On older vans, this stage often takes a bit of patience because even factory panels and repair sections sometimes need fettling to fit properly.

The aim is not just to cover the hole, but to rebuild the sill so it looks right, fits correctly and restores structural integrity.

Welding the New Sill Section Into Place

Once the corroded metal had been removed and the replacement section prepared, the new piece was welded into place.

The welding process secured the repair section into the sill and tied it back into the existing structure. Care was taken to keep the repair neat and solid, ensuring the new metal was properly joined and positioned.

After welding, the joins were cleaned back and dressed so the repair could be smoothed and prepared for finishing. This is where the repair starts to go from “serious metal surgery” to something that actually resembles a van again.

Cleaning and Finishing the Repair Area

After the sill section had been welded in, the surrounding area was ground back and cleaned up. The welds were dressed, and the repaired section was smoothed so it would be ready for further protection and finishing.

Any remaining surface corrosion around the repair area was removed, and the metal was cleaned and prepared to help prevent future issues. Rust repairs are not just about replacing what has failed — they are also about protecting what remains.

On jobs like this, proper preparation and corrosion protection are just as important as the welding itself. If you repair the metal but don’t protect it properly afterwards, you are basically inviting the rust back in like an unwanted relative who never gets the hint.

Why Proper Sill Repairs Matter

The sill is an important structural part of the vehicle, and corrosion here should never be ignored. On vans like the Volkswagen T2, rust in the sill area can weaken the body and become a much larger job if left untreated.

A proper repair means cutting out the corrosion, welding in sound new metal and restoring the strength of the panel. Done correctly, it helps extend the life of the van and keeps it in a much safer and more solid condition.

For many older vans, especially those used for work or camper conversions, repairs like this can be well worth doing to keep the vehicle on the road and preserve it for the future.

Finished Result

By the end of the repair, the rotten sill section had been removed and replaced with new metal, restoring the integrity of the area.

The repair section was shaped, fitted and welded into place, and the sill was cleaned back and prepared for the next stage of finishing and protection. Instead of a rusted-through, weakened sill, the van now had a solid repaired section ready to be protected and refinished properly.

It is the kind of repair that makes a real difference — not just visually, but structurally too.

Volkswagen T4 Welding Repairs at FH Motorbody

At FH Motorbody, we carry out welding repairs, rust repairs, sill repairs, body repairs, paintwork and general vehicle restoration work.

For this Volkswagen T2, the work included:

• Inspecting corrosion in the sill area
• Cutting out rusted metal
• Removing weakened sections
• Preparing the surrounding metal
• Trial fitting a replacement sill repair section
• Welding in new metal
• Dressing and cleaning welds
• Smoothing the repair area
• Preparing the sill for finishing and protection

Whether your vehicle has rust in the sill, wheel arch, floor, chassis area or lower body sections, FH Motorbody can inspect the damage and carry out proper repair work to restore strength and condition.