RV delamination: assessment, repair scope and cost
Delamination is separation between bonded layers. A bulge, hollow response or high meter reading is a reason for assessment, not proof of one cause or a complete repair scope. Identify moisture entry and substrate condition before choosing an injection repair or panel replacement.
A moisture meter can respond to metal
The Wagner BI2200 manual warns that metal in a wall can produce a response resembling elevated moisture. It recommends scanning horizontally and vertically to understand the shape of the response. RV wall framing and hidden hardware make that limitation relevant.
Map observations with the instrument’s correct material mode and compare appropriate reference areas. Do not assign a universal wet/dry percentage to every composite wall, or treat tapping and thumb pressure as proof of failed bonding. An inspection may need direct access to establish condition.
A listed kit price is not the installed repair bill
RV Roof and Wall advertises the Composet SLV #24 kit at $265 before shipping. It describes up to 25 square feet for a single-layer application, with actual coverage dependent on conditions. That is a seller’s product claim, not independent proof of a repair outcome.
A measured two-by-six-foot affected surface is 12 square feet. Two separated interfaces across the same footprint would total 24 interface-square-feet under that assumption. Neither number proves the kit is suitable: access, remaining sound material, preparation and the product instructions still determine the repair.
| Cost item | What to identify |
|---|---|
| Assessment | Access and documentation of affected layers |
| Moisture entry | Source repair before closing the wall |
| Bond or rebuild | Which layers remain and which are replaced |
| Finish and fittings | Removal, refitting, sealing and exterior finish |
| Product and labor | Materials, clamping, curing and installed labor |
Coverage depends on cause and the applicable agreement
Thor’s 2026 Class A/C warranty guide gives lamination coverage of six years or 50,000 miles, whichever comes first, subject to its definitions and exclusions. It excludes water-intrusion damage and requires annual inspections by an approved dealer or repair service to retain structural/lamination coverage.
That differs from saying any bubble is covered or every water-related repair is excluded by every manufacturer. Submit the actual evidence under the applicable agreement and preserve inspection records. Obtain a written repair scope before deciding whether the purchase price justifies a damaged RV.