Comparisons
Weighing the options
Six side by side comparisons covering the decisions RV and fleet owners actually face: specialty shop against general body shop, repair against replacement on a roof, fiberglass against aluminium sidewall, and dealer service against an independent specialist.
01
Specialty RV body shop compared with a general automotive body shop
A general collision shop is built around unibody cars measured against published dimensional data, painted in booths sized for sedans. An RV, a fifth wheel or a box truck is a laminated or framed structure on a ladder chassis, often forty five feet long, with plumbing, propane, twelve volt distribution and slide mechanisms buried inside the walls that were damaged. The tools, the booth, the parts channels and the estimating logic all differ. This table lays out where the two disciplines separate.
| Specialty RV and commercial body shop | General automotive body shop | |
|---|---|---|
| Vehicle length handled | Bays and paint booth sized for coaches past forty feet, plus fifth wheels and box bodies on the same floor. | Bays sized for passenger vehicles and light trucks; long units are usually declined or subcontracted out. |
| Structure understood | Laminated sandwich walls, aluminium cage framing, ladder chassis, outriggers and slide room substructure. | Unibody crush zones and bolted steel panels measured against factory dimensional databases. |
| Hidden damage expectation | Teardown is planned into the estimate because water and impact damage travel behind an intact skin. | Visual estimate plus a modest supplement rate; hidden damage is the exception rather than the norm. |
| Paint match approach | Spectrophotometer reading plus a cured sprayout card, because coach graphics use multiple colours and gelcoat fades unevenly. | Paint code lookup and a variant deck, which works well on a factory colour applied to one panel. |
| Parts sourcing | Coach builder parts departments, component suppliers such as Lippert and Dometic, and salvage channels for discontinued caps. | Manufacturer dealer networks and established aftermarket catalogues with predictable availability. |
| Systems work in scope | Plumbing, propane, twelve volt, 120 volt and appliance repairs handled in house when a collision opens a wall. | Systems work outside the automotive electrical harness is generally referred to a separate mechanical shop. |
| Estimate hours | Bands run from 5 hours to 800 hours and beyond, published as a range rather than a single figure. | Most repairs land between 4 and 60 hours with well established published labour times per operation. |
| Insurance documentation | Photographic teardown files, moisture maps and measured supplements, because RV adjusters rarely see the vehicle twice. | Standard estimating platform photos and line items that adjusters review against familiar operation codes. |
| Cycle time driver | Parts lead time on caps, panels and mechanisms, which can run weeks and is stated up front. | Parts availability is usually days, so scheduling and booth capacity drive the calendar instead. |
| Roof and sealant work | Membrane, sealant chemistry and penetration resealing are core competencies handled on the same job. | Rarely applicable, and sealant systems used on RV roofs are not stocked or specified. |
02
In-shop specialty repair compared with a travelling technician visit
Travelling RV technicians solve a real problem: a failed water pump or a dead converter in a campground does not need a facility. What they cannot do is control the environment. Paint needs filtered air and stable temperature, structural welding needs a fixture, laminated wall repair needs vacuum pressure and dry conditions, and calibration needs a level floor with measured target placement. OCRV Center works on vehicles at the Yorba Linda facility only and does not send technicians out, so this comparison is about matching the job to the setting.
| OCRV Center, in-shop only | Travelling technician visit | |
|---|---|---|
| Where the work happens | Entirely at the 35,000 square foot Yorba Linda facility. The owner drives the vehicle in and leaves it. | Wherever the vehicle is parked, subject to space, weather, power availability and site rules. |
| Paint and refinish | Downdraft booth with filtered air, controlled temperature and a documented cure schedule. | Not viable to a durable standard. Airborne contamination and temperature swings show up in the finish. |
| Structural and welding work | Fixtured, measured, welded and coated with the vehicle supported and the area properly prepared. | Outside the scope of a service call for anything load bearing. |
| Laminated wall repair | Vacuum or platen pressure applied with the panel dry and the shop climate stable through the cure. | Adhesive cure cannot be controlled and the panel cannot be pressed properly in a parking space. |
| Small system faults | Handled at the facility alongside anything else the vehicle needs, on one work order. | Often the faster and cheaper option when a single component has failed and the vehicle is stationary. |
| Diagnostic equipment | Scan tools, moisture meters, film gauges, scales, calibration targets and a level measuring floor in the building. | Whatever fits in the van, which covers common faults but not instrumented electrical or calibration work. |
| Parts on hand | Shop stock plus supplier accounts, so a discovered second fault does not stop the job for a week. | A second trip is usually required once the fault is identified and the part is ordered. |
| Insurance claim handling | Full photographic teardown documentation, supplements and direct carrier billing from the facility. | Limited documentation depth, and carriers generally want the vehicle inspected at a repair facility. |
| Multi-trade jobs | Body, paint, cabinetry, plumbing and electrical trades all work the same vehicle without scheduling handoffs. | Each trade means a separate visit, a separate invoice and a separate window of availability. |
| Best used for | Collision, structural, delamination, refinish, roof replacement, water damage and full systems work. | Single component swaps, seasonal servicing and troubleshooting on a unit that cannot easily be moved. |
03
Targeted roof repair compared with full membrane replacement
Owners usually arrive convinced they need a new roof, and often they do not. The membrane itself rarely fails across its whole area; sealant at vents, skylights, air conditioner shrouds and the front and rear terminations fails first, and the water that gets past it damages the deck below. The decision comes down to how much sound membrane remains, how much deck is wet, and how many more seasons the owner intends to keep the unit. This table sets the two paths against each other.
| Targeted roof repair and reseal | Full membrane replacement | |
|---|---|---|
| Typical hour band | 4 to 20 hours for a recoat and reseal, depending on penetration count and how much old sealant must come off. | 20 to 80 hours, driven by roof length, penetrations to reset and how much deck needs replacing. |
| Published price band | $750 to $4,500 and up for roof recoat and reseal work at the posted body and paint rate. | $3,500 to $18,000 and up for membrane replacement, before any deck or structural repair is added. |
| When it is the right call | Membrane is intact and pliable, damage is local, and moisture readings are dry away from the penetrations. | Membrane is brittle, shrinking at terminations, previously patched repeatedly, or lifting across large areas. |
| What gets removed | Old sealant beads at the failing penetrations, plus any patch material that will not bond to new sealant. | The entire membrane, all roof mounted components, and both trim rails along the full length. |
| Deck inspection depth | Moisture readings and probing around penetrations; deck condition away from those areas stays unverified. | The full deck is exposed and inspected, so every soft area is found and dealt with in the same job. |
| Expected service life | Two to five years before the resealed penetrations need attention again, sooner in constant sun. | Ten to twenty years on a correctly bonded new membrane with sealant maintained at the penetrations. |
| Effect on a later claim | Documented reseal history helps establish that maintenance was performed when a leak claim is filed. | A dated full replacement resets the maintenance clock and removes prior roof condition from the argument. |
| Risk of a surprise | Moderate. Wet deck can hide between penetrations and only appears when the next leak develops. | Low once the membrane is off, because everything is visible before the new material is bonded down. |
| Interior disruption | None. All work happens on the roof surface and around the exterior trim. | Sometimes required if soft deck extends into the ceiling structure and interior panels must come down. |
| Best value case | A well maintained unit whose owner keeps a reseal on a two year cycle rather than waiting for stains. | A unit past twelve years on its original membrane, or one being kept long term after a major leak. |
04
Laminated fibreglass sidewall compared with aluminium skin over frame
The two dominant sidewall constructions behave completely differently when they are damaged. A laminated fibreglass wall is a bonded sandwich that carries load through its skin, so an impact that looks small can compromise a large area of bond line. An aluminium skinned stick built wall carries load through its frame, so the skin dents easily but the damage stays local and the panel unscrews. Knowing which one is parked in your driveway changes both the estimate and the repair strategy.
| Laminated fibreglass sidewall | Aluminium skin over frame | |
|---|---|---|
| How load is carried | The bonded sandwich acts as a stressed skin, so the wall itself contributes structural stiffness. | The stud frame carries load and the skin is mostly a weather surface fastened over it. |
| Impact behaviour | Cracks and stars locally, but the bond line can separate well beyond the visible damage boundary. | Dents and creases in the sheet, with damage generally staying close to the point of contact. |
| Damage assessment method | Tap testing and moisture mapping across the panel to find where the laminate has let go. | Visual inspection plus a straightedge, with the frame checked from inside where accessible. |
| Repair approach | Peel back to sound bonding, rebuild the core, re-laminate under pressure, then fill, prime and refinish. | Remove the affected sheet section, straighten or replace framing, fit new skin and seal the seams. |
| Typical hour band | 10 to 100 hours for delamination work, depending on how far the failed bond line actually runs. | 16 to 120 hours for aluminium skin and sidewall replacement including framing repair and sealing. |
| Published price band | $1,500 to $20,000 and up for delamination repair on a laminated wall. | $2,500 to $25,000 and up for aluminium skin and sidewall replacement. |
| Refinish requirement | Almost always, since gelcoat or painted Filon must be blended into adjacent panels for a clean result. | Sometimes avoidable when a corrugated panel section can be replaced with matching stock. |
| Water intrusion consequence | Severe. Water travels along the bond line and destroys adhesion far from where it entered. | Contained but rot prone, since wet water reaches wood studs and lauan directly behind the skin. |
| Weight and insulation | Lighter for its stiffness, with block foam giving continuous insulation and no thermal bridging through studs. | Heavier framing with batt insulation between studs, and noticeable thermal bridging at each member. |
| Typical vehicles | Most modern motorhomes, fifth wheels and higher trim travel trailers built in the last twenty years. | Older travel trailers, budget trim levels, some toy haulers and many purpose built cargo trailers. |
05
Dealer service department compared with an independent repair specialist
Dealers have the manufacturer relationship, factory technical bulletins and a parts counter tied directly to the brands on the lot. Independents set their own rate card, schedule by intake order rather than by where a unit was purchased, and see a wider spread of construction types passing through the bays. Neither is universally correct. The right choice depends on the age of the coach, whether the work is factory covered, and how much of the vehicle needs to be touched at once.
| Dealer service department | Independent repair specialist | |
|---|---|---|
| Brand coverage | Deep on the brands carried on that lot, with direct access to factory technical resources and bulletins. | Broad across brands and construction types, with pattern knowledge from repeated exposure to failure modes. |
| Scheduling priority | Units sold at that dealership and factory covered claims generally move ahead of outside customers. | Work is scheduled by intake order and parts availability rather than by where the unit was purchased. |
| Rate transparency | Rates vary by department and are usually quoted per job rather than published on a rate card. | OCRV Center posts its labour rates, materials formula, parts markup and deposit schedule publicly. |
| Collision and structural work | Frequently subcontracted out to a body shop, adding a transport leg and a second invoicing party. | Handled in house alongside systems work, so one facility carries the whole job start to finish. |
| Paint capability | Varies. Many service departments have no booth and no refinish staff at all. | Downdraft booth with spectrophotometer matching and sprayout verification in the same building. |
| Older units | Support thins out once the model is discontinued and factory parts supply dries up. | Salvage sourcing, fabrication and adaptation keep older units repairable past factory parts availability. |
| Insurance claim experience | Focused on factory covered repairs; insurance claims are a smaller share of typical department volume. | Routine work, with teardown documentation, supplements and direct carrier billing as standard practice. |
| Fabrication capability | Limited to part replacement. Custom metalwork is normally sent out to a fabricator. | Welding and fabrication in house, which matters on discontinued brackets, frames and service bodies. |
| Commercial vehicles | Rarely accepted at an RV dealership, since the parts and technical channels do not overlap. | Box trucks, food trucks, service bodies and van conversions run through the same shop floor. |
| Best used for | Factory covered repairs on a new unit and brand specific technical faults still under manufacturer support. | Collision, structural, refinish, water damage and multi trade repairs, especially on units past factory support. |
06
EPDM compared with TPO and fibreglass roof construction
Three roof materials dominate the market and each fails in its own way. EPDM rubber is forgiving and easy to patch but thin and easy to puncture. TPO holds colour better and can be heat welded but demands a flat deck and reacts badly to the wrong sealant chemistry. Fibreglass shrugs off hail and branches but costs more, weighs more and needs resin work rather than a patch when it does get damaged. Identifying which one is overhead decides the sealant, the repair method and the budget.
| EPDM rubber membrane | TPO membrane | Moulded fibreglass roof | |
|---|---|---|---|
| Material | Ethylene propylene diene monomer synthetic rubber sheet bonded to the deck. | Thermoplastic polyolefin sheet, bondable and heat weldable at the seams. | Gelcoated fibreglass panel, either moulded or laid up over the roof structure. |
| Ageing appearance | Chalks to a dull white as it ages, which is normal rather than a sign of failure. | Holds a brighter white for longer and resists chalking noticeably better than rubber. | Gelcoat oxidises and dulls but polishes back to gloss while film thickness remains. |
| Puncture resistance | Low. A dropped tool or a low branch goes through it easily. | Moderate. Stiffer than rubber and slightly more resistant to point impact. | High. It is the only one of the three that shrugs off branch contact and hail. |
| Field repairability | Straightforward. Bonded patches and compatible sealant handle most damage. | Good, though heat welding produces a better seam than adhesive on a large repair. | Resin, matting and gelcoat work followed by refinishing, so it is a shop job. |
| Sealant compatibility | Uses EPDM rated self levelling and lap sealant; the wrong chemistry attacks the sheet. | Requires TPO specific sealant, and EPDM product applied to it will lift the seam. | Accepts polyurethane and polyether sealants, with gelcoat compatible products at repairs. |
| Deck flatness demand | Forgiving. It drapes over minor deck irregularities without telegraphing them. | Demanding. It telegraphs high spots and joints in the deck beneath it. | Structural in its own right, so it spans and stiffens rather than following the deck. |
| Weight | Lightest of the three, which is why it dominates entry and mid range units. | Comparable to rubber, marginally heavier in the thicker grades. | Heaviest by a clear margin, and it counts against cargo carrying capacity. |
| Typical service life | Ten to fifteen years with sealant maintained at every penetration. | Twelve to twenty years with sealant maintained and no chemistry mistakes. | Twenty years or more, with gelcoat maintenance rather than replacement. |
| Replacement cost band | Falls within the $3,500 to $18,000 and up membrane replacement band by roof length. | Sits at the upper half of that same membrane replacement band due to material cost. | Repaired rather than replaced in most cases, priced against the fibreglass repair bands. |
| Where it shows up | Travel trailers, entry and mid range motorhomes and a great many fifth wheels. | Newer coaches across most price points, having largely displaced rubber on new builds. | Higher end diesel pushers, premium fifth wheels and some purpose built commercial bodies. |
Still on the fence?
Bring the vehicle in. Most repair or replace decisions turn on what is behind the panel, and that cannot be settled from a photograph.