Camper and Trailer Repair Orange County Owners Count On

Two Ways to Build a Trailer, Two Ways to Fix One

Nearly every towable falls into one of two construction types, and knowing which you own tells you most of what a repair will look like. Stick and tin means a wood or aluminum stud frame with corrugated aluminum siding screwed over it. Laminated means fiberglass skin bonded to foam block and framing in a heated press, producing a smooth flat wall.

Stick and tin is easier and cheaper to repair. Siding comes off in panels, you can see the framing directly, you replace what is rotted and screw new siding back on. It is also less stiff, which is why these units flex and why the sealant at every seam has a shorter service life.

Laminated walls are stiffer and look better, but when the bond fails, the wall stops carrying load and the repair is far more involved. There is no way to see inside a laminated wall without opening it, so on these units the moisture meter earns its keep before anyone writes a number.

• Stick and tin: corrugated siding over a stud frame, panel by panel repair
• Laminated: bonded fiberglass over foam and framing, injection or section replacement
• Stick and tin flexes more, so seams need sealant service more often
• Laminated hides damage completely until it is structural
• Aluminum siding dents but rarely delaminates, which makes damage visible

Water Is the Real Enemy, Not Impact

Most trailers that come to us have never been in a collision. They have been slowly taken apart by water entering somewhere small: a roof seam, a vent flange, a window corner, a marker light, a screw head. Sealant is a consumable with a service life of a few years in Southern California sun, and the maintenance interval is the single most ignored thing in RV ownership.

The pattern is always the same. Water enters high, travels along a framing member, and appears low, often at the floor and often several feet from the entry. Owners chase the stain and reseal the wrong place. We do a water test and a moisture map first, so the repair goes where the entry actually is.

The economics are brutal and worth stating plainly. Resealing a roof perimeter and all penetrations is typically $600 to $1,800. Rebuilding a rear wall and floor section after three seasons of that leak is $6,000 to $20,000. The maintenance is not optional, it is just deferred.

Roof Membranes and the Sealant Interval

Most towables have a single ply rubber or TPO membrane over a decked roof, terminated at the edges with a metal rail and covered in sealant. The membrane itself usually outlives the sealant by many years. What fails first is almost always the lap sealant on the penetrations and the edge rail.

Inspection is straightforward: look at every flange, every seam, every screw head, and every rail termination for cracking, chalking or lifting. Anything that has pulled away is a water path. On a unit that has been in the sun for five years without service, expect most of it to need attention rather than a spot repair.

Full membrane replacement is a different job: strip the old membrane and all roof mounted components, evaluate and replace decking that has softened, lay new membrane, then reinstall and reseal everything that came off. On an average trailer that runs $3,500 to $9,000 depending on length and how much decking is bad.

Frames, Tongues and Low Speed Hits

Trailer frames are simple steel structures, and that simplicity is why they are repairable. What we see most often is not highway collision damage but low speed events: jackknifing into the tow vehicle, a curb strike on a corner, a sway incident that loaded the A frame sideways, or a landing gear failure that dropped the front on pavement.

The critical thing on any of these is measuring before repairing. A frame that is out of square will tow crooked, wear tires on one side, and stress the body at every seam until the sealant fails. We measure the frame diagonally and check the axle alignment relative to the coupler, then straighten and reinforce as needed.

Reinforcement matters more than replacement on most trailer frames. Adding plate at a stressed joint is often stronger, cheaper and quicker than replacing a rail section, and on a welded frame it avoids introducing a new heat affected zone in the middle of a load path.

• Measure frame diagonals and axle to coupler alignment before repair
• Check the A frame and coupler for twist after any sway event
• Inspect welds at every crossmember to rail joint
• Look for cracked or elongated shackle and hanger holes
• Reinforce with plate at stressed joints rather than replacing rail

Axles, Bearings, Brakes and the Parts Owners Skip

Trailer running gear is the least maintained system in RV ownership and the most likely to strand you. Bearings need service on an interval regardless of mileage, because grease breaks down sitting in a hot wheel hub through a Southern California summer. Electric brake magnets wear out. Springs sag and shackle bushings elongate.

A trailer that pulls to one side, wears a tire pattern, or takes noticeably longer to stop is telling you something specific. We inspect the whole running gear as a system rather than replacing the part that made noise, because a worn shackle bushing and a dragging brake produce similar complaints and different repairs.

This work bills at the $260 mechanical rate. A full running gear service on a tandem axle trailer, including bearing repack, brake inspection and adjustment, is usually a one day job and is far cheaper than a roadside bearing failure that takes a spindle with it.

Sequencing a Job When Water Has Been in a Wall for Years

When a unit arrives with long standing intrusion, the order of operations decides whether the repair lasts. We stop the water first: find and fix every entry point, and confirm with a water test before any interior work happens. Repairing a wall while the roof still leaks is money spent on a schedule to do it again.

Second, we open and dry. Soft framing comes out, sound framing gets exposed and dried and metered until it reads dry, and anything that has gone punky is replaced. This is the stage where the estimate can grow, so we photograph everything and get authorization before continuing.

Third, we rebuild and re seal, then refinish. Body and paint labor is $210 per hour, parts carry 100 percent markup at or under $100 and 35 percent over, and any authorized repair above $2,000 takes a 50 percent deposit so long lead material can be ordered on approval day.

• Stop the water and verify with a test before anything else
• Open, dry and meter the framing until it reads dry
• Photograph and authorize before scope grows
• Rebuild framing, then re skin, then re seal
• Refinish last, so no new work happens over fresh paint