Collision and Structural
RV Delamination Repair for Sidewalls, Roofs and Slide Faces
Typical range
$1,500 to $20,000+
Shop hours
10 to 100+
Labor rate
$210/hr
The short answer
Delamination is the separation of the fiberglass skin from the substrate underneath. It shows as bubbling, waviness, or a soft spot. Repair runs $1,500 to $20,000 and up, or 10 to 100 plus hours at $210 per hour, depending on how far the separation has traveled.
01
What this work actually involves
A laminated RV sidewall is a sandwich. Fiberglass skin on the outside, then adhesive, then luan or a similar substrate, then foam or framing, then the interior panel. Delamination is what happens when the adhesive between those layers lets go. Once it lets go in one place, the failure spreads, because the edge of the separated area is now a stress concentration and it keeps peeling.
Two things cause it in Southern California. Water, which gets in through a failed seal and destroys the substrate bond from behind, and heat, which softens the adhesive directly. In the low desert we see purely heat-driven delamination with no water involvement at all, which surprises owners and frequently surprises adjusters. In coastal cities we see it start at the bottom seam where moisture wicks up.
The repair depends entirely on which cause you have and how far it has spread. Injection works on small contained areas with a sound substrate. Anything larger, or anything with a soft substrate, means opening the wall.
On an injected repair the vacuum matters more than the resin. The gap between a released skin and its substrate is usually well under a millimeter, and a thin resin pushed in by syringe travels a few inches before it stalls against its own surface tension. We lay out a pattern of small injection and vent ports, warm the panel so the resin thins and flows, pull vacuum through a bagged section to draw adhesive across the entire void, then hold clamping pressure with battens shaped to the contour of the wall until it kicks. Skipping vacuum is why owner-applied kits leave a wall bonded around the holes and loose everywhere between them.
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
- Full mapping of the separated area, which is always larger than the visible bubble
- Moisture testing to determine whether the cause is water or heat
- Resin injection and vacuum re-bond on small contained areas with sound substrate
- Skin removal and substrate replacement where the luan or core has failed
- Foam core and framing repair behind the skin
- Full sidewall panel replacement where separation is too extensive to re-bond
- Slide face and roof delamination repair
- Source seal repair so the cause is corrected, not just the symptom
- Refinish and graphics reproduction across the repaired area
- Injection and vent port layout, vacuum bagging, and battened clamping to the wall contour
- Bond line repair at the transition where a laminated wall meets a molded cap
- Post-repair moisture verification
03
When you need this service
- A bubble, blister, or wave in the sidewall that was not there when new
- A shadow line or ripple visible only when light rakes across the wall
- A soft spot that flexes when you press on it with a flat hand
- A hollow sound when you tap the wall, different from the surrounding area
- Staining or softness on the interior panel in the same area
- Separation starting at a lower seam, a window corner, or a slide opening
- A wall that reads flat first thing in the morning and bulges once the sun has been on it
- Awning arm, ladder, or bracket screws that have lost their grip in the wall
04
How we do it, step by step
- 01
Map the actual extent
Tap testing and raking light across the whole panel. The separated area is routinely three to five times the size of what the owner pointed at.
- 02
Moisture testing
Meter readings through the wall to determine whether the substrate is wet. This decides the entire repair approach and it decides whether the claim is a covered water loss.
- 03
Find and document the source
If water is involved there is an entry point, usually a seal at a window, a roof penetration, or a slide. Repairing the wall without correcting the source guarantees a repeat.
- 04
Core and adhesive identification
We confirm what the wall is actually built from before choosing a chemistry. Block foam, honeycomb, and framed cavity walls behave differently under vacuum, and a resin that works well on one will starve or crush another.
- 05
Repair method selection and pricing
Injection, skin removal, or panel replacement. We price the realistic option and explain why the cheaper one will or will not hold on your specific unit.
- 06
Re-bond or rebuild
Injection with vacuum on contained sound areas. Skin off, substrate replaced, and re-laminated where the core has failed.
- 07
Source correction
The seal, roof penetration, or slide seal that let the water in gets repaired as part of the job.
- 08
Refinish and verify
Faired, refinished, graphics reproduced, and moisture re-verified before delivery.
05
Pricing and posted rates
| Item | Rate or range | Notes |
|---|---|---|
| Typical job range | $1,500 to $20,000+ | Varies with extent of damage and parts availability |
| Shop hours | 10 to 100+ | 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.
06
On the insurance side
Cause determines coverage. We document moisture readings and the entry point specifically so the claim decision is made on evidence.
07
Vehicles we do this work on
Vehicle
Class A Gas Motorhomes
A Class A gas motorhome is a flat-front coach built on a Ford F53 or Workhorse front-engine chassis, typically 28 to 38 feet. Rear
Vehicle
Class A Diesel Pusher Motorhomes
A diesel pusher carries a rear-mounted diesel on a raised-rail air ride chassis, usually 34 to 45 feet with full-body paint and pa
Vehicle
Class C Motorhomes
A Class C is a coach body built onto a cutaway van chassis with a sleeping or storage cabover extending above the factory cab. Tha
Vehicle
Standard Fifth Wheels
A fifth wheel couples to a hitch in the truck bed through a kingpin and pin box, with a raised forward bedroom over the truck. The
Vehicle
Travel Trailers
A travel trailer tows from a ball hitch behind the tow vehicle rear axle on an A-frame tongue, which makes it the most sway-prone
Vehicle
Toy Hauler Fifth Wheels
A toy hauler fifth wheel carries a cargo garage behind the axles with a full-height rear ramp door. Load behind the axle centerlin
Vehicle
Park Model RVs
A park model is a towable unit up to roughly 400 square feet built with residential windows, roofing, and finishes, designed to si
08
Questions about delamination repair
Frequently asked questions
What causes delamination on an RV?
Two things. Water entering through a failed seal and destroying the adhesive bond from behind, or sustained heat softening the adhesive directly. Southern California produces both. Coastal and inland units usually delaminate from water. Low desert units in Palm Springs, Indio, and the Coachella Valley regularly delaminate from heat alone with no water present.
Can delamination be fixed, or do I need a new wall?
Small contained areas with a sound substrate can be re-bonded by injection under vacuum. Once the luan or core has gone soft, injection will not hold and the skin has to come off so the substrate can be replaced. Very extensive separation is more economically repaired as a full panel replacement.
How much does delamination repair cost?
$1,500 to $20,000 and up, or 10 to 100 plus hours at $210 per hour plus materials. A single contained bubble injected and refinished sits near the low end. A full sidewall with failed substrate, a slide opening in the middle of it, and a graphics scheme to reproduce sits at the high end.
Does insurance cover delamination?
It depends entirely on cause. Sudden water intrusion from a covered event is generally claimable. Gradual deterioration and maintenance-related seal failure generally is not. This is why the moisture testing and source documentation matter so much. The finding determines whether you have a claim.
Can I stop delamination from spreading?
Only by correcting the cause. If water is getting in, sealing the entry point stops the progression, though it will not re-bond what has already separated. If it is heat driven, covered storage and a reflective roof coating slow it substantially. Doing nothing means it keeps peeling, because the edge of the separated area is a stress riser.
How long is the vehicle in the shop for this?
An injected repair on a contained area is typically five to ten working days once it is scheduled, and most of that is cure and refinish rather than hands-on labor. A skin-off substrate replacement runs three to eight weeks depending on how much wall opens up, whether a slide room or a window has to come out, and how much of the graphics scheme crosses the repair. A full panel replacement waits on the panel, and on a discontinued model that wait is the entire schedule.
Does covered storage really slow this down?
Measurably, on heat-driven separation. The mechanism is adhesive creep, and creep rate climbs steeply with panel temperature, so anything keeping direct sun off the sidewall and roof helps. A shade structure in Indio or Palm Desert does more for a laminated wall than any product you can wipe onto it. It does nothing at all for water-driven separation, which is a sealant maintenance issue, so if your unit is letting go at a window corner rather than in open wall area, storage is not the answer.
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Ready to move on delamination repair? Bring it to Yorba Linda.