ServiceNomad RV · Knowledge

RV Water Damage Inspection Guide

Water damage is one of the most common and expensive problems RV owners face. It can start small—a slow leak around a window or vent—and spread over months or years, causing rot, mold, and structural failure. Regular inspections help you catch water intrusion early, before it becomes a major problem. This guide covers where to look, what signs to watch for, and when to call a professional.

Why Water Damage is a Big Deal

RVs are built with wood framing, plywood, and foam insulation, all of which can be destroyed by water. Once water gets into the walls or floor, it can wick through the structure and cause damage far from the original leak. Mold and mildew can develop quickly, creating health hazards and unpleasant odors. Structural rot can weaken the frame and make the RV unsafe to drive or live in. Water damage repairs are expensive—often running into the thousands of dollars, and in severe cases, the RV may be totaled. Catching leaks early and fixing them immediately is the best way to avoid catastrophic damage.

Exterior Inspection for Water Entry Points

Start by inspecting the roof. Look for cracked sealant around vents, AC units, antennas, and skylights. Check for soft spots or areas where the roof feels spongy when you press on it. Walk around the RV and check the windows, doors, and slideout seals for gaps or damage. Look at the sidewalls for cracks, delamination (bubbling or separation of the exterior skin), or signs of previous repairs. Inspect the underbelly for tears or damage that could let water in from below. Check the awning for leaks around the mounting hardware. Even small cracks or gaps can let water in, so reseal anything suspicious. Preventive resealing every year or two is much cheaper than repairing water damage.

Interior Inspection for Water Damage Signs

Inside the RV, look for discolored or stained ceiling panels, especially around vents, skylights, and the AC unit. Check the walls around windows and slideouts for soft spots, bubbling wallpaper, or paint that's peeling. Press on the floor around the toilet, shower, and entry door—it should feel solid, not spongy. Open cabinets and check the ceilings, walls, and floors inside for water stains or soft spots. Smell for mustiness, which often indicates hidden mold. Check around the water heater and under sinks for drips or stains. If you find any soft spots, discoloration, or musty smells, investigate further or call a professional. Early detection is key to minimizing damage.

When to Call a Professional

If you find soft spots, discoloration, or signs of active leaks, it's time to call a mobile RV technician. They can use moisture meters to pinpoint the leak and assess how far the damage has spread. If the damage is extensive, they'll help you understand your options—whether the RV can be repaired or if it's beyond economical repair. Don't wait and hope the problem will go away—water damage only gets worse over time. The sooner you address it, the cheaper and easier the repair will be. If you're not sure whether you have water damage or just cosmetic wear, a professional inspection is worth the cost for peace of mind.

⚠️ Safety Notes

  • If you find mold or extensive water damage, avoid disturbing it—mold spores can become airborne and cause health issues.
  • Do not walk on a soft or spongy roof—it may collapse and cause injury.
  • If you smell a strong musty odor or see visible mold, consider evacuating the RV and calling a professional for mold remediation.

💡 Prevention Tips

  • Inspect the roof and reseal around vents, skylights, and AC units annually.
  • Check window and slideout seals regularly and replace them if they're cracked or damaged.
  • Look for soft spots in the floor and ceiling during regular cleaning and maintenance.
  • Use a moisture meter to check suspected areas if you're concerned about hidden leaks.
  • Address any signs of water intrusion immediately—don't wait for it to get worse.

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