Inspection and Evaluation in San Juan Capistrano

This is a bench inspection performed at the shop in Yorba Linda. The vehicle is driven or towed to the facility, put on a level floor with shore power and a water supply available, and worked through systematically by a technician with lifts, meters and thermal imaging on hand. It is not a driveway walkaround and it is not performed at a storage lot or a seller's address.

That constraint exists because the inspection is only worth what the equipment behind it allows. Moisture mapping a sidewall needs a meter and a thermal camera in stable conditions. An LP pressure integrity test needs a manometer and a controlled environment. Getting underneath to look at spring hangers and tank supports needs a lift or a pit. Those things live in a building, and an inspection done without them is an opinion with a clipboard.

The output is a written report with photographs, organized by system, with each finding categorized by severity and, where relevant, priced against our posted bands. You get the document whether or not you have any repair work performed here, and whether or not you go ahead with a purchase.

The used RV market rewards buyers who look properly and punishes those who do not. The two failure modes that cost the most are water intrusion that has been cosmetically covered and a delaminating sidewall that looks acceptable in photographs. Both are visible to someone with a moisture meter and a trained hand, and both are effectively invisible on a weekend walkaround.

A typical pre-purchase inspection reveals a handful of issues, and the interesting part is usually the distribution. A coach with three small sealant items and one soft spot at a roof penetration is a normal used vehicle with maintenance due. A coach with moisture readings along an entire seam, a spongy floor at a slide and staining in a compartment is a different vehicle entirely, and the price should reflect that or you should walk.

The report also gives you something to negotiate with. A seller responds differently to a photographed moisture map with meter readings than to a buyer saying they think there might be a leak. Even where the deal proceeds at the asking price, you enter ownership knowing what needs doing and roughly what it costs, which is worth more than the inspection fee on its own.

Moisture work uses two instruments that answer different questions. A pin or pinless meter reads material moisture content at a point, which tells you whether a specific location is wet. A thermal camera reveals temperature differences across a surface, which shows the shape and extent of a wet area far faster than a grid of point readings ever could. Used together they map an intrusion rather than merely confirming one.

Delamination is assessed by sounding and by sight. A laminated sidewall is fiberglass bonded to a foam and framing core, and when the bond fails the panel produces a distinctly different sound under a tap and shows a subtle ripple in reflected light. Early delamination is a repair. Extensive delamination across a sidewall is a major structural undertaking, and knowing which one you are looking at before money changes hands matters enormously.

Underneath, we look at frame condition and corrosion, crossmember integrity, spring hangers and pivot wear on trailers, tank supports and any evidence of previous repair. Undocumented weld repair on a frame is a finding worth understanding, because it says something happened that nobody mentioned, and it changes what the rest of the inspection is looking for.

Roof inspection is the single most valuable part of the exercise, because roofs cause the most expensive failures and almost nobody looks at them. Every penetration is a potential entry point: vents, fans, air conditioner, skylight, antenna, refrigerator stack, solar mounts, luggage rack feet, and the front and rear cap seams where the roof meets the body.

Sealant fails long before membranes do. Lap sealant hardens, shrinks and cracks at the edges of its bead, and it does that in Southern California sun faster than in most climates. A bead that looks continuous from the ground can have a hairline separation at a corner that admits water on every rain. We inspect each penetration at close range, photograph it, and record its condition individually rather than describing the roof as a whole.

The membrane itself gets assessed for chalking, seam condition, punctures, patching and any softness in the deck beneath. A soft deck is the finding that changes everything, because it means water has been in the structure long enough to compromise the plywood, and that is not a sealant job.

Systems are tested by operating them rather than by looking at them. The refrigerator runs a pulldown on both energy sources, the water heater is cycled on gas and electric, the furnace is run through complete cycles, air conditioners are checked for temperature split, the generator is started and loaded, and slides and levelling jacks are operated through their full travel.

LP integrity is tested properly with a manometer: system pressure established, the supply closed, and the pressure watched for any drop over a timed period. That is the only reliable way to find a small leak, since a leak too small to smell is still a leak. Manifold pressure is verified at appliances under load, and any regulator that has drifted is reported with the reading rather than a description.

Electrically, we record resting battery voltage and state of charge, baseline parasitic draw, converter output, transfer switch operation, and a circuit analyzer reading at the shore inlet and at receptacles. Running gear gets tire condition and sidewall date codes, brake function and adjustment on trailers, bearing condition and axle alignment. Every result is a recorded measurement rather than a checkbox.

The same inspection framework serves several purposes beyond a purchase. After a hail event or a storm, a documented condition report with panel-by-panel damage mapping is what supports a claim properly, and roof impact in particular is routinely missed on a first carrier inspection because nobody climbs up to look at it.

Owners also bring us vehicles for a second opinion on somebody else's estimate. We inspect and report what we find without commenting on the other shop's motives, because the document is more useful than an argument. Frequently the two estimates differ because they scoped the same damage differently, and seeing both sets of findings side by side resolves it faster than a phone call.

Post-repair verification is the third use. If a coach has been repaired elsewhere and the owner is uncertain whether the work was done properly, an inspection focused on that repair produces a factual record: what was replaced, how it was sealed, whether moisture readings around the repair have normalized, and whether anything was left incomplete. That record is what makes a conversation with the original shop or a carrier productive.