After hundreds of certified RV inspections, these are the issues that show up most often — and what buyers should know about each one.
Certified RV inspectors evaluate hundreds of components during a thorough inspection. But across all those inspections, certain problems appear far more frequently than others. Here are the ten most common RV defects found during professional inspections in Northwest Arkansas and beyond — and what each one means for buyers and owners.
1. Roof Sealant Failure
Cracked, shrunken, or missing sealant around roof penetrations is the most frequently found issue in RV inspections. The good news: caught early, it's an inexpensive fix. Caught late, after water has been infiltrating for months or years, the structural damage can cost thousands to repair.
2. Water Intrusion and Delamination
Delamination — where the outer fiberglass skin separates from the interior wall structure due to water damage — is one of the most serious defects a buyer can encounter. It appears as bubbling or waviness in the exterior walls and often indicates significant structural deterioration. Major delamination can make an RV unrepairable at a reasonable cost.
3. Soft Spots in the Floor
Soft or spongy spots in the floor are a direct result of water intrusion into the floor decking. The wood substrate absorbs moisture and begins to rot. Depending on the extent, repairs can range from a few hundred dollars to a complete floor replacement costing several thousand.
- Check around the toilet base and all plumbing connections
- Inspect the slide-out room floors carefully
- Feel along exterior walls and slide-out seams
- Look for any discoloration or staining on flooring
4. Inoperative or Missing Life Safety Devices
LP gas detectors, carbon monoxide detectors, and smoke alarms that are missing, expired, or non-functional are consistently among the most common findings in RV inspections. These devices have a defined lifespan and must be replaced on schedule. An LP detector that doesn't alarm isn't just useless — it creates a false sense of security.
5. Electrical Issues
Non-functioning outlets, improperly wired components, undersized wiring, missing ground fault protection, and degraded wiring are all common findings. Electrical problems in RVs range from minor inconveniences to serious fire hazards.
6. Slide-Out Seal and Mechanism Problems
Slide-out rooms add tremendous living space, but they're complex mechanical systems with seals, motors, gears, and tracks that require regular maintenance. Torn or compressed wiper seals allow water and air infiltration. Binding or slow-operating slides often indicate alignment issues or worn components.
7. LP Gas System Deficiencies
Failed regulators, deteriorated flex line connections, appliances that don't light properly, and improper tank installation are all common LP system findings during certified inspections. Because LP gas issues can be life-threatening, these are among the highest-priority defects in any inspection report.
8. HVAC System Problems
Air conditioners that don't cool adequately, furnaces that fail to ignite, and heat pump systems with refrigerant issues are routine findings. These systems work hard and are often the last things sellers maintain properly.
9. Tire and Running Gear Issues
RV tires age differently than car tires — UV exposure causes sidewall cracking long before the tread wears out. An RV with low mileage can have tires that are 8 years old and structurally compromised. During inspections, tire age, condition, inflation, and load ratings are all evaluated.
10. Generator and Appliance Failures
Generators that won't start, microwave ovens that don't heat, refrigerators that don't cool, and water heaters that fail to ignite are all common inspection findings. Testing all appliances under actual operating conditions — something a cursory seller's walk-through rarely does — is a core part of every professional RV inspection.