On this page (7 sections)
What cutting a bus in half actually changes
A school bus body gets its rigidity from continuous side posts tied into roof bows and a floor structure, with rub rails acting as longitudinal stiffeners. A roof raise cuts every one of those posts at the same height, then splices them back with whatever the builder had available: tube inserts, plate straps, or in the worst cases, sheet metal screws and sealant.
How that splice was executed determines the entire character of the vehicle afterward. Done with sleeved inserts and full welds, the body is nearly as stiff as it was. Done with lap plates and a few tacks, the bus twists over driveways and the splice line telegraphs through the paint within a couple of years. We look hard at that splice before anything else.
Window deletes do something similar. Replacing glass with a bonded or riveted panel changes how load moves around the opening, and a panel that was fitted without addressing the sill structure will start working loose at its fasteners. The tell is a repeating line of paint cracks around each delete panel on the sun side. Reattaching the panel without addressing the sill underneath repeats it.
Rust lines and house wiring in a moving vehicle
Original rivet lines are where corrosion starts once paint is breached. Every rivet is a small paint discontinuity in an assembly that flexes, and school buses spend their first life outdoors. Grinding a rust bloom and shooting primer over it is cosmetic. Cutting back to bright metal, treating the surrounding area, and replacing material where the section has thinned is the repair that lasts.
Then there is the wiring. A great many conversions were wired to residential standards because that is what the builder knew: solid core conductors, wire nuts, and boxes intended for a stationary structure. Vibration work-hardens solid copper and backs off wire nuts. What starts as an intermittent light becomes a hot connection, and hot connections in a wooden interior are how buses burn.
We rework that to automotive and marine practice: stranded conductor, crimped and sealed terminations, proper strain relief, and overcurrent protection sized to the wire rather than to the load someone hoped for. It is not glamorous and it is the highest-value thing we do on many of these vehicles. It is also the work that makes a converted bus safe to sleep in.
Inspection first, number second
We will not write a firm estimate on a skoolie from photographs. On a production RV, the hidden structure is predictable. On a converted bus, the hidden structure is whatever one person decided on a weekend, and the difference between the good version and the bad version can be a factor of three in labor. Photographs cannot show us a weld.
The inspection is systematic: probe the splice line at the raise, check panel attachment at deletes, pull a section of interior finish where practical, check floor structure at the rear wheel wells, and look at how the house electrical enters and leaves the battery bank. Then we quote. That inspection is billable time and it is credited against an authorized repair rather than charged twice.
Insurance is its own conversation on these. Coverage on a converted bus depends heavily on how the vehicle is titled and how the conversion was documented, and that affects what a repair authorization looks like. Owners with build photographs and receipts consistently have easier claims than owners without them. Anyone still building should be photographing every stage before it gets covered up.
How this body is built
Original school bus body with roof raises, window deletes, and owner-built interiors of highly variable quality.
Chassis: Thomas, Blue Bird, or International school bus chassis, usually leaf sprung.
Owner-built work is the norm here. We inspect the prior conversion before quoting, because what is behind the panel drives the hours far more than the visible damage.
What fails on it
These are the failure patterns we see repeatedly on this body style. They are not generic RV problems. They come from how this particular vehicle is built and how it gets used.
- Roof raise seams leaking where the owner spliced the body
- Window delete panels working loose from body flex
- Wiring done to house standard rather than automotive standard, which fails under vibration
- Rust at the original rivet lines once paint is breached
Claims we handle on this vehicle
- Body impact
- Roof and raise repair
- Repaint after conversion
Services for this vehicle
Frequently Asked Questions
My roof raise leaks along the splice. Can that be sealed?
Sealing alone rarely holds, because the leak is usually a symptom of the splice moving. We evaluate whether the joint is structurally adequate first. If it is, we correct the seam detail properly with the right substrate preparation. If it is not, reinforcing the splice comes first, because a moving joint destroys every sealant put across it.
Will you repaint a bus that still has the original yellow showing through?
Yes. School bus yellow is a strong, high-hiding colour and it will ghost through a thin topcoat, so the process needs correct sealing and enough film build rather than more colour coats. Surface preparation is most of the job: sanding, rust correction at the rivet lines, and edge treatment. Body and paint labor is posted at $210 per hour.
I bought a partially finished conversion. Where should I start?
With an inspection of structure and electrical, before spending anything on the interior. Those two systems determine whether the vehicle is worth finishing. Cabinetry and finishes are straightforward to change later. A poorly executed roof splice or a residential wiring job buried behind new paneling is expensive to reach once the interior is complete.
Do you do structural welding on bus bodies in house?
We do. Fabrication and welding are on site, so post splices, sill repairs, floor structure, bumper mounts, and rack framing get built here rather than sent out. That matters on conversions because the correct part frequently does not exist as a part, and the practical answer is to make it and fit it properly.