RVs and Motorhomes / In shop only
Skoolie and School Bus Conversion Repair in Yorba Linda
Skoolies are converted school buses, usually Bluebird, Thomas or IC, built on a body on frame chassis with a bolted steel body. Most are owner converted with undocumented modifications, and roof raises are the single most consequential structural change we assess.
A school bus is a body on frame vehicle with a bolted steel body, which makes it the most convert friendly platform in existence and the reason skoolies exist at all. Bluebird, Thomas Built and IC bodies sit on their own frames, the interior strips out cleanly, and the steel structure welds readily.
It is also why skoolies arrive here with more undocumented structural modification than any other vehicle we see. Roof raises, window deletes, wall cut outs for doors and slide outs, and rear conversions to garage space are all common, and almost none of it was engineered or inspected.
What does a roof raise actually do to a school bus body?
It cuts every vertical rib in the body. A school bus body gets its rollover strength and its torsional stiffness from steel ribs running up the sides and across the roof, tied into the floor structure and the roof bows. Raising the roof means severing every one of those ribs and splicing in an extension.
How that splice was made is the entire question. A properly executed raise uses full penetration welds with internal sleeves at every rib, new skin lapped and sealed, and the window belt reinforced. A poorly executed raise uses butt welded tube with no sleeve, or worse, riveted plates, and it leaves the body substantially weaker than it left the factory.
We inspect every splice on any skoolie that comes in with cracking, door fit issues, water intrusion at the raise band, or simply for a pre purchase assessment. Certified structural welding to correct a bad raise is published at $750 to $20,000 and up across 5 to 80 hours.
- Rib splices without internal sleeves or full penetration welds
- Skin lapped without proper sealant, leaking along the raise band
- Window belt not reinforced after the cut
- Roof bows shortened or omitted at the raise
- No corrosion protection inside the splice, rusting from the inside out
What else do owner built skoolies commonly get wrong?
Water at the roof and at every deleted window. A window delete leaves a large aperture that has to be structurally closed and sealed, and the usual approach of sheet metal and self tapping screws leaks at the fastener line within a year or two. Roof reseal and repair on this class of vehicle runs $400 to $4,500 across 2 to 18 hours.
Electrical is the second area. Skoolies frequently run large solar arrays and lithium banks installed without proper fusing, cable sizing or bonding, mounted through the roof skin with sealant as the only weather barrier. We provide written safety findings on those items regardless of why the vehicle came in.
Third is floor structure. Removing seat mounts leaves dozens of penetrations in the floor plate, and most builds cover them rather than sealing them. Water from below wicks into new plywood subfloor and rots it from underneath where nobody looks.
Can a skoolie be insured and registered as a motorhome?
In California a converted bus can generally be registered as a housecar once it has permanent living facilities, and insurers will often write it as a motorhome, but both frequently require an inspection and photographic evidence of the conversion. Getting that documentation right at the outset makes everything afterward easier.
Where owners run into trouble is valuation. A skoolie is worth the bus plus the build, and the build is where all the money went. Without receipts, photographs and a system inventory, a carrier settles on the value of a used school bus, which is not a number anybody wants to see after a fire.
We produce that documentation package as part of any work we perform, including a photographic record of the structure, an itemized systems inventory and a written repair cost figure. Pre purchase inspections on this class of vehicle are also worth doing before money changes hands.
What Is Included
- 01Roof raise splice inspection at every rib with written findings
- 02Certified in shop structural welding to correct improper splices
- 03Window delete and wall aperture structural closure and sealing
- 04Roof and raise band resealing with correct bedding materials
- 05Floor plate penetration sealing and subfloor condition assessment
- 06Written electrical and propane safety findings
- 07Photographic structure record and systems inventory for registration and insurance
Common Problems and How We Solve Them
Water runs down the inside of the wall at the roof raise band.
SolutionThe lapped skin at the raise was sealed rather than properly bedded. We open the band, close it with correct materials and check the rib splices behind it while it is open.
The bus body flexes and interior finishes crack after driving.
SolutionThat is almost always rib splices without internal sleeves. We inspect every splice, sleeve and reweld what needs it, and the interior cracking stops because the body stopped racking.
The subfloor is rotting from underneath with no visible leak inside.
SolutionOld seat mount penetrations in the floor plate were covered rather than sealed. We seal the plate from below and replace the affected subfloor, which is the only order that actually works.
Frequently Asked Questions
Will you inspect a skoolie before I buy it?
Yes. Pre purchase inspection with a written report runs $250 to $1,200 depending on scope and includes roof raise splice inspection, structural findings, moisture readings and electrical safety observations. It is the best money spent on any DIY converted vehicle.
Can a badly executed roof raise be fixed?
Usually yes. Rib splices are re engineered with internal sleeves and full penetration welds, the window belt is reinforced and the raise band is properly closed and sealed. Certified structural welding runs $750 to $20,000 and up across 5 to 80 hours.
Do you weld on school bus bodies?
Yes, in shop by certified technicians only. School bus bodies are steel and weld readily, which is exactly why so much unengineered welding exists on these vehicles and why the inspection comes before the repair.
Can you help with registration documentation for a converted bus?
We produce a photographic structure record, an itemized systems inventory and a written repair cost figure. What a specific DMV office or carrier requires varies, and we supply documentation rather than making representations about approval.
Are skoolies worth repairing when they are damaged?
It depends entirely on the quality of the original conversion. A well built skoolie with sleeved splices and sound structure is very repairable. One with butt welded ribs and a rotting floor plate frequently costs more to correct than to replace, and we say so with photographs attached.
Services We Perform on This Vehicle
Related Vehicles
We Can Help. Contact Us Today.
Bring the vehicle to our Yorba Linda facility and we will document the damage properly, work directly with your carrier, and give you a written figure built from published rates and real labor hours.
All work is performed at our Yorba Linda facility. We do not offer mobile, roadside or fleet route service.
