Glass, Doors and Openings
New Window Installation in Vans, Trailers and Conversions
Typical range
$400 to $3,500
Shop hours
2 to 14
Labor rate
$210/hr
The short answer
New window installation cuts and fits side, rear, and sliding windows into van, trailer, and conversion walls with structural assessment, sealed flange bedding, and a water test. Work runs $400 to $3,500, or 2 to 14 hours at $210 per hour plus the window.
01
What this work actually involves
Cutting a window into a van or trailer wall is a structural decision before it is a glass decision. Van bodies carry load through their ribs and their roof rails, and a window opening cut across a rib without a compensating frame weakens the panel and starts a crack at a corner within a season of freeway flexing. We locate the ribs, plan the opening between them where possible, and fabricate a reinforcing frame where the design requires cutting one. Every corner of every opening gets a radius, never a square corner, because a square corner is a stress riser that will crack.
The bedding detail is what determines whether it leaks in five years. Windows go in on butyl tape with the fasteners drawn in sequence, and the cut edge of the opening gets deburred and treated before anything is bedded to it. Bare cut steel on a coastal van will start corroding under the flange immediately, and by the time you see rust at the window trim the corrosion has been running under the seal for years. On aluminum-skinned trailers we isolate dissimilar metals at every fastener for the same reason.
Placement is worth thinking about carefully because it is permanent. In Southern California a window on the west or south face of a camper conversion becomes a heat source for the whole afternoon, and owners who put a large fixed pane there in a build often regret it after their first August in the Coachella Valley. Insulated dual pane units, tinted glazing, and openings positioned for cross ventilation rather than for the view all make a real difference in a vehicle that will be parked in the sun.
Systems and brands we work on: Hehr, Kinro, Todd.
Location: All work is performed at our Yorba Linda facility. We do not offer mobile, roadside, or fleet route service.
02
What the job includes
- Structural assessment and rib location before any cut is planned
- Reinforcing frame fabrication where a structural rib must be cut
- Opening layout with radiused corners to prevent stress cracking
- Cutting, deburring, and corrosion treatment of the opening edge
- Fixed, sliding, awning, and emergency egress window installation
- Dual pane insulated and tinted glazing options for heat control
- Butyl bedding with fasteners drawn in the correct sequence
- Dissimilar metal isolation at every fastener on aluminum bodies
- Interior trim ring, wall return, and finish panel fitting
- Water test at the completed opening before the vehicle leaves
03
When you need this service
- A van or trailer conversion that needs light, ventilation, or egress
- A cargo body with no side or rear glass being converted for occupancy
- A previously cut opening with square corners that has begun to crack
- A prior aftermarket install that leaks or shows corrosion at the trim
- A need for a compliant emergency egress opening in a conversion
- Excessive interior heat gain from an existing untinted single pane window
04
How we do it, step by step
- 01
Placement and structural review
Ribs, roof rails, and wiring located, then placement planned around them. We also talk through sun exposure, since a large west-facing pane is a heat source all afternoon here.
- 02
Window selection
Fixed, sliding, awning, or egress unit selected against the use, with dual pane and tinted glazing options priced where heat control matters.
- 03
Opening layout
Opening marked with radiused corners and verified against interior obstructions before a cut is made, because there is no undoing a cut in the wrong place.
- 04
Cut and reinforce
Opening cut, edges deburred, and a reinforcing frame fabricated and welded or bonded where a structural rib had to be interrupted.
- 05
Corrosion treatment
Every cut edge treated and coated before bedding. Untreated bare steel under a window flange is how coastal vans start rusting from the inside out.
- 06
Bedding and fastening
Window bedded on butyl with fasteners drawn in sequence for even compression, and dissimilar metals isolated on aluminum-bodied trailers.
- 07
Trim and water test
Interior trim ring and wall return fitted, then the opening water tested at pressure from multiple angles before the vehicle is released.
05
Pricing and posted rates
| Item | Rate or range | Notes |
|---|---|---|
| Typical job range | $400 to $3,500 | Varies with extent of damage and parts availability |
| Shop hours | 2 to 14 | Quoted after teardown, not before |
| Body and paint labor | $210 per hour | 2026 posted rate |
| Paint supplies | $55 per paint hour | Calculated automatically on every estimate |
| Body supplies | $5 per body hour | Calculated automatically on every estimate |
| Parts | 100% markup under $100, 35% over | Special order parts require a non refundable deposit at order |
| Deposit | 50% at authorization over $2,000 | Additional 25% when parts arrive on jobs over $10,000 |
| Sales tax | 7.75% on parts and materials | Labor is not taxed |
Insurance billed jobs may be billed at carrier negotiated labor rates that differ from the posted retail rates above. See all posted rates.
07
Vehicles we do this work on
Vehicle
Cargo Vans
Cargo vans on Transit, ProMaster, Express, and Sprinter platforms carry trade tools, parts inventory, and route freight. Rear door
Vehicle
Sprinter Vans
Mercedes Sprinter vans run last-mile routes, trade service, and camper conversions across Southern California. Sliding door tracks
Vehicle
High-Cube Vans
High-cube vans trade a tall roof and maximum interior volume for a large flat sail area and a roofline that clears almost nothing.
Vehicle
Camper Van Conversions
Camper van conversions are Sprinter, Transit, or ProMaster chassis with windows cut into the sidewalls, a roof full of penetration
Vehicle
Box Trucks
Box trucks put a separately built cargo body on a cab chassis, and the joint between them is where most failures start. Rear frame
Vehicle
Bus Conversions, Prevost and Marathon
A Prevost, MCI, or Van Hool conversion is a commercial motorcoach shell finished by a second-stage builder such as Marathon, Feath
Vehicle
Mobile Workshops
Mobile workshops carry benches, vises, compressors, welders, and dense tool inventory, which makes weight and mounting the definin
08
Questions about window installation, side rear and sliding
Frequently asked questions
How much does it cost to install a window in a van?
Installation runs $400 to $3,500, or 2 to 14 hours at $210 per hour plus the window. A single small fixed pane between existing ribs sits near the low end. A large sliding unit requiring a fabricated reinforcing frame, plus a second egress window and full interior trim returns, sits at the high end. Windows are billed at parts markup.
Will cutting a window weaken my van?
It can, if it is done without regard for the structure. Van bodies carry load through their ribs, and cutting one without a compensating frame invites cracking at the corners. We locate the ribs, plan the opening between them where possible, fabricate a reinforcing frame where we must cut one, and radius every corner so there is no stress riser.
Should I choose dual pane or single pane glass?
For a vehicle that will be occupied in Southern California heat, dual pane with tinted glazing is worth the cost, particularly on a west or south facing wall. It cuts radiant gain meaningfully and reduces condensation on cold desert mornings. Single pane is lighter and cheaper and is fine for a cargo or utility application that is not lived in.
Why do aftermarket windows leak or rust?
Almost always because the cut edge was never treated and the window was bedded on sealant instead of butyl with a proper fastener sequence. Bare cut steel under a flange corrodes immediately on a coastal vehicle, and by the time rust shows at the trim it has been running for years underneath. Preparation is the whole job on this one.
09
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10
More glass, doors and openings work
Ready to move on window installation, side rear and sliding? Bring it to Yorba Linda.