# Park Model Repair for Eastvale, California > Roofing, residential window, interior finish and frame repair for park models transported to the Yorba Linda facility. Source: https://ocrv.info/vehicles/campers-and-trailers/park-model A park model is a towable unit built for extended stationary placement, with residential style windows, doors, roofing and interior finishes on a trailer frame. Repair work covers shingle or metal roofing, residential window and door installation, drywall or panel interiors, skirting and porch structure, plus residential grade plumbing and electrical systems. ## Pricing Typical range $750 to $50,000+, 5 to 250 hours. Park models sit somewhere between a recreational vehicle and a small house. They are built on a trailer frame and are legally towable, but the construction borrows heavily from residential practice: dimensional lumber framing, drywall or wood panel interiors, residential windows with nail fins, shingle or standing seam roofing, and full size appliances. That mix means repair pulls from both the RV playbook and the construction playbook. Because they stay in one place for years, park models accumulate a different damage profile than road going units. There is little tow related structural fatigue and a great deal of weathering. Roofing wears out. Sealant around residential windows fails where it meets a mobile substrate. Skirting traps moisture against the frame. Porch and deck structures added after delivery are often attached in ways that put load into the body rather than into their own footings. Getting a park model to the shop is the practical constraint, since the unit must be transported to the Yorba Linda facility for work to happen. All repair is performed in shop rather than at a placement site. Once the unit is at the building, roofing, siding, window replacement, interior finish work, plumbing and electrical are all handled indoors, roughly twenty miles from Eastvale by SR-71 and SR-91. ## Common damage - Cracked shingles at the nail line - Loose metal roof panel fasteners - Window nail fin sealant failure - Rotted sill plates behind drywall - Corroded frame outriggers under skirting - Ceiling staining at wall junctions - Porch attachment loading the body wall ## Roofing on a unit that is not quite a building Park model roofs are commonly asphalt shingle over sheathing, or a standing seam metal panel system, with a pitch that looks residential but sits on a structure that flexes far more than a house does. Shingles on a flexing deck crack at the nail line, and metal panel systems loosen at fasteners as the frame moves during transport or settlement. Both problems show up first as staining on an interior ceiling at a wall junction rather than as an obvious hole. Repair starts by determining whether the deck is sound. Sheathing that has been wet under shingles delaminates and no longer holds fasteners, so re roofing over it produces the same failure. Damaged sheathing gets replaced, the underlayment goes down properly with correct laps, flashing at every penetration and wall junction gets rebuilt, and the new covering is fastened to a schedule that accounts for a structure that moves more than a fixed building. - Deck sheathing condition confirmed before any new covering - Underlayment laps and flashing details rebuilt correctly - Fastening schedule adjusted for a flexing structure - Wall to roof junctions addressed as the likely leak source - Interior ceiling staining traced back to the actual entry point ## Residential windows, doors and siding on a mobile frame Residential windows are designed to be installed in a wall that does not move. Set into a park model, they are attached to framing that racks slightly during transport and settles once placed. The sealant joint at the nail fin is the part that gives up. Water then enters the wall and travels down the framing to the sill plate, where it does its damage out of sight behind interior drywall. Repair opens the wall from outside, removes the window, inspects and replaces damaged framing and sheathing, and reinstalls with a proper flashing sequence: sill pan first, jamb flashing lapped over it, head flashing over that, and sealant used as a secondary defense rather than the primary one. Siding goes back with correct laps and clearances. Interior drywall or panel repair follows, with finish matched to the existing surface. Where a unit has settled unevenly, the wall gets brought back to plumb before the window is set. ## Frame, skirting and the systems inside Even a stationary unit sits on a trailer frame, and that frame corrodes when skirting traps humid air against it or when a unit was placed on ground that holds water. Corrosion at the outriggers and the perimeter rail is common, and it matters because those members carry the floor edge. Repair cuts out corroded sections, welds in matching steel, treats the surrounding area and rebuilds the floor edge where the wet frame damaged it. Systems in a park model are residential in scale. Full size water heaters, standard plumbing fixtures, one hundred twenty volt distribution through a residential style panel, and full size cooling equipment. Failures tend to be at the transitions, where a residential fixture meets an RV grade supply line or where a panel was fed by a cord connection that has degraded. Those transitions get rebuilt to a proper standard while the interior is open. - Corroded outriggers and perimeter rail sections replaced - Floor edge rebuilt where the frame stayed wet - Residential to RV plumbing transitions rebuilt properly - Panel feed and connection points inspected and repaired - Full size appliance installations checked for correct support ## Frequently asked questions ### Does the park model have to come to the shop? Yes. All work is performed in shop at the Yorba Linda facility, so the unit needs to be transported to the building. That is a real constraint on park models because they are large and typically have not moved in years. Owners usually arrange transport before scheduling, and the inspection happens once the unit is on the property. ### Why do residential windows leak in a park model when they do not in a house? Because the wall moves. A house wall is essentially static, so a sealant joint at the nail fin lasts. A park model wall flexes during transport and settles afterward, which works that joint until it separates. The durable fix is a proper flashing sequence with a sill pan and lapped jamb and head flashing, so water is directed out even when the sealant eventually fails. ### Can drywall interiors be repaired or should they be replaced with panels? Both are available. Drywall repairs well and matches the existing finish, which is why most owners choose it for localized damage. Where a unit has repeated movement cracking at the same corners, replacing that area with a panel system that tolerates movement is a reasonable option. The choice gets discussed with the finish sample in hand before work starts. ### Is frame corrosion under a park model repairable? In most cases yes. Corroded outriggers and perimeter rail sections get cut out and replaced with matching steel, welded properly and treated. What raises the scope is the floor edge sitting on that frame, which is usually damaged as well. An inspection from underneath with the skirting removed establishes how far the corrosion runs before any number is put on the work. --- OCRV Center. 23281 La Palma Ave, Yorba Linda, CA 92887. (949) 799-3387. info@ocrvcenter.com. Serving Eastvale, California in Riverside County, about 20 miles from the shop. All work is performed in shop at the Yorba Linda facility. No mobile, roadside or on-site service is offered. Scope is body, paint, structural, fiberglass, interior and vehicle systems work. Engine rebuilds, transmission rebuilds, drivetrain work, DOT inspections and emission testing are not performed.