The Adjuster Wrote Two Feet of Damage and Teardown Found Nine

A customer brought us a 2019 fifth wheel last spring with a carrier estimate for $4,100. Something had backed into the driver side ahead of the wheel well. The dent was maybe twenty four inches across, the fiberglass was cracked in a rough star pattern, and the adjuster had written a fiberglass repair, a refinish and a blend into the adjacent panel.

Nothing about that estimate was dishonest. It was written from the outside of the panel, and from the outside of the panel that is genuinely what the damage looks like.

By the time we had the skin off, the actual debonded area ran from just behind the front cap to roughly a foot past the wheel well. Nine feet, not two. The final approved figure was $19,400.

Why does a laminated wall hide damage this badly?

Because it is not a panel. It is an assembly, and the layers do different jobs.

An RV sidewall is an outer fiberglass skin, a layer of adhesive, a substrate that is either composite board or lauan plywood, a welded aluminum tube framework, and an interior panel. All of that is pressed together under vacuum so it behaves as a single stiff unit. That is what lets a fifty foot coach have thin walls and not fold up.

The problem is what happens when something hits it. The skin is stiff in plane, so a localised impact does not just crush inward at the contact point. Energy spreads sideways along the skin, and where it exceeds the shear strength of the adhesive, the bond lets go. The skin springs back and looks almost normal. The bond underneath is finished.

That is why you can press on a wall a foot away from a dent and feel it flex.

How do you find out how far it actually goes?

Tap testing, and it is not sophisticated. A sound laminated panel returns a sharp, tight tap. A debonded panel returns a duller, hollower sound with a slightly longer ring.

You work across the panel in a grid, marking every point where the sound changes. What you end up with is an outline of the real damage rather than the visible damage, and on impact damage that outline is almost always dramatically larger than what the photographs show.

We do this before we quote, and we photograph the marked outline. That photograph is what turns a supplement request into an approved supplement.

Moisture metering runs alongside it. Where an impact has opened a seam, water has usually been getting in since the day it happened, and a wet core is a different repair from a dry debonded one. On a composite substrate the water does not rot anything, it just quietly kills more adhesive. On lauan it rots, and then you are replacing substrate rather than rebonding it.

What does the difference cost?

At our posted rates, the arithmetic is straightforward and it is why the gap between first estimate and final figure is so large on these jobs.

• Fiberglass repair on a localised area, $750 to $12,000 and up at 4 to 60 labor hours
• Delamination repair across a mapped area, $1,500 to $20,000 and up at 10 to 100 labor hours
• Full panel replacement where framing or substrate has failed, $2,500 to $25,000 and up
• Body and paint labor at $210 per hour, paint materials at $55 per paint hour

A two foot fiberglass repair is genuinely a few thousand dollars. A nine foot delamination repair with substrate replacement across part of it is genuinely twenty. Neither figure is padded. They are different jobs.

Is the adjuster going to fight it?

Usually less than owners expect, if the documentation is specific.

Carriers push back on general claims. A line reading "additional delamination found, $12,000" invites a fight because there is nothing in it to verify. A line reading "delaminated area mapped at 104 by 38 inches by tap test, photographs attached, rebond requires 46 labor hours at posted $210 per hour rate" is a different conversation, because every element of it is checkable.

Our published rate card helps here more than anything else we do. An adjuster comparing our hourly figure to a market rate can look it up on a public website. That removes the single most common source of friction, which is arguing about whether the rate itself is reasonable.

Where we do get resistance, it is usually on whether the additional damage is related to the loss or pre existing. That is a fair question and we answer it directly: pre existing water damage looks different from impact debonding, it has staining and usually rot, and we separate the two in the documentation rather than trying to slide old damage into a new claim. That honesty is worth something the next time we submit.

What should you do if this is happening to you?

Do not authorize a repair against the first estimate on impact damage to a laminated wall. Not because the estimate is wrong, but because it is provisional and everybody involved knows it.

Instead:

1. Get the vehicle to a shop that will tap test before quoting, and ask them directly whether they do.
2. Let teardown happen before anything is ordered or repaired.
3. Make sure findings are photographed at the moment they are exposed, not afterwards.
4. Insist that the supplement itemises operations and hours rather than giving a lump figure.

If a shop tells you they can give you a final number on laminated impact damage without opening the panel, they are either going to come back to you later with a change or they are going to fill it. Neither is what you want.

The $4,100 estimate on that fifth wheel was not the problem. Treating it as final would have been.