Vintage RV Restoration: Riveted Skins and Lost Parts

Because it is a different kind of object. A current motorhome sidewall is a bonded sandwich made in a press. A vintage coach sidewall is a skeleton of wood or aluminium members with thin aluminium sheet riveted over it, sometimes with insulation stuffed in the cavity and sometimes with nothing at all. The skin carries some of the load. The frame carries the rest. They only work together while the fasteners are tight.

That means a dent is not a filler job. Aluminium sheet that has been stretched will not shrink back with body filler over it, and filler on a panel that flexes cracks along the rivet line within a year. The correct approach is to work the metal itself where it can be worked, and to replace a panel between rivet lines where it cannot. On a polished coach the choice is starker still, since there is no paint to hide anything and the repair is judged in reflection.

Underneath, the other constant on a vintage coach is the frame. Water that got past a window frame or a roof seam thirty years ago rotted a wood member that has been carrying the skin ever since. Opening a panel usually means finding out the framing behind it is the actual job. Skin and sidewall replacement is posted at $2,500 to $25,000 across 16 to 120 hours, and it is quoted after the panel is opened, not before.

Most of the time it does not, and that is the defining constraint of the work. Window frames, vent surrounds, corner mouldings, drip rails, door hardware, badges and interior trim for a coach from a manufacturer that closed decades ago are not on any shelf. There are three routes and the estimator will tell you which applies.

1. Repair the original. Slowest, most expensive per item, and the only option when the piece is visually definitive to the coach.
2. Fabricate a replacement. Pattern the original, form new material, match the finish. Practical for brackets, mouldings, drip rails and sheet parts.
3. Adapt a modern equivalent. Honest and often correct for functional items like vents, fans and seals, where nobody will look and the original design was the weak point anyway.

Fabrication is why welding and metal fabrication sits alongside the body side of the shop rather than as a separate department. Special order parts, when a part does exist, require a non refundable deposit at order, because they are not stock items anyone else will buy.

Vintage glass is the single most anxious part of any restoration, because a curved windshield for a coach nobody built after the seventies is effectively irreplaceable. Where original glass survives, it is removed with a great deal of care or not removed at all, and the surrounding structure is worked around it.

The seals are a different matter. Vintage coaches used rubber gaskets and butyl tapes that hardened, shrank and cracked long ago, and almost every water intrusion story on an old rig begins at a window frame or a roof seam rather than at the roof field. Window and frame reseal and replacement is posted at $250 to $3,500 across 1 to 14 hours. Roof recoat and reseal runs $750 to $4,500 across 4 to 20 hours.

Where a roof has been resealed repeatedly over decades, the accumulated layers of incompatible product become the problem themselves. Stripping back to substrate and starting again is more work than another coat and it is usually the only thing that lasts. See roof repair.

It depends entirely on what the coach was. A painted vintage motorhome can be refinished conventionally, with the caveat that original colours are frequently single stage enamels whose modern equivalent has to be mixed by eye against a protected sample rather than pulled off a code. Custom colour matching exists for exactly this.

A polished aluminium coach is a different craft. There is no paint film to level the surface, so every dent, every rivet that sits proud and every scratch in the clad layer shows. Panels are worked, then progressively cut and polished. It is slow and it is honest work with no shortcuts available.

Full paint refinish is posted at $5,000 to $35,000 across 40 to 250 hours. Colour matched blending is $500 to $5,000 across 4 to 25 hours. The shop takes on all years, all makes and all classes, and vintage restoration sits in the same building as current model collision work rather than in a separate specialist yard. Request a Quote to start with an assessment.