high severity
Delamination is when an RV's fiberglass exterior separates from the wall substrate, showing as bubbles, waves, or ripples. It's often caused by water intrusion and is expensive to fix properly, so it meaningfully lowers value.
What it means
Laminated walls bond fiberglass to a foam/wood core. Water intrusion or adhesive failure breaks that bond, and the skin bubbles or waves away from the structure.
Symptoms & signs to look for
- Bubbles, ripples, or waves in the sidewall (best seen at an angle in sunlight)
- Soft areas behind the visible delamination
- Often accompanied by water stains inside
What to inspect
- View walls at a low angle in direct light to reveal waves
- Press suspected areas for give
- Check for related water damage inside
Repair cost & price impact
| Item | Typical range |
|---|---|
| Repair cost | $1,500 small patch to $5,000–$15,000+ for large panels |
| Effect on what you should pay | Significant delamination is a major price reducer and often a walk-away. |
Most affected: Laminated fiberglass travel trailers and fifth wheels
Questions to ask the seller
- How long has the bubbling been there?
- Has the wall ever had water intrusion?
When to walk away
- Large delaminated panels
- Delamination plus interior water damage
RVverdict provides educational buyer guidance, not a professional RV inspection, appraisal, legal advice, insurance quote, financing offer, or guarantee. Always verify title, service records, tire age, and roof/seal condition independently. Consider a professional inspection before buying.