Why Florida is Hard on RV Roofs
Three factors combine to make Florida particularly challenging for RV roof sealants:
- UV intensity. Florida receives more UV radiation than any other Continental US state. Lap sealant that might last 4 to 5 years in Ohio lasts 2 to 3 years in Orlando.
- Thermal cycling. Florida temperatures swing from the low 40s in December to over 95 degrees in July. This constant expansion and contraction stresses sealant and membrane bonds at every roof penetration.
- Rain intensity. Florida afternoon thunderstorms in summer can deposit 1 to 2 inches of rain in 30 minutes. This high-pressure rainfall pushes water through any compromised sealant that might only show a small gap.
Pre-Season Roof Inspection (Do This in May)
Schedule your roof inspection in May, before the heavy rains start in June. Here's what to check:
Lap Sealant Around Penetrations
Get on the roof and inspect every piece of lap sealant - around each AC unit, every vent cover, the TV antenna or satellite mount, any skylight, and the front and rear cap seams. Look for cracks in the sealant surface, sealant that has lifted from the substrate, gaps where sealant has shrunk away from the edge, and any discoloration that suggests previous moisture intrusion.
Membrane Surface Check
Walk the entire roof slowly. Press on the membrane with your foot - it should feel firm everywhere. Soft or spongy spots indicate the substrate below has absorbed moisture. Check for any cuts, tears, or punctures, particularly near the AC unit where maintenance access has been performed.
Interior Moisture Meter Check
From inside the coach, use a moisture meter on ceiling panels near every roof penetration. A reading above 15 percent typically indicates moisture in the ceiling assembly. Compare the interior condition to what you found on the roof - this helps confirm which penetrations are actually leaking.
Sealant Replacement Schedule
| Roof Component | Inspect Frequency | Replace Frequency (Florida) |
|---|---|---|
| AC unit lap sealant | Annually (before rainy season) | Every 2 years |
| Roof vent lap sealant | Annually | Every 2 years |
| Front and rear cap seams | Annually | Every 2 to 3 years |
| Antenna/satellite mounts | Annually | Every 2 years |
| Roof edge trim | Annually | As needed when cracks appear |
Florida UV climate accelerates sealant degradation. Northern schedules (3-5 years between reseals) are not appropriate for Florida RV storage.
What to Do When a Leak Happens
If you discover a roof leak during rainy season, apply a temporary fix and schedule a proper repair as soon as possible. Eternabond roof repair tape is the best temporary solution - it adheres to damp surfaces and can stop active leaks while you wait for dry weather for a permanent repair.
Do not use standard silicone caulk as a temporary fix on an EPDM rubber roof. Silicone does not bond well to EPDM and creates a sealant over sealant situation that makes the real repair harder.
For professional roof inspection and reseal services throughout the Apopka area, call us at (407) 326-5500. We do full roof reseals throughout Orange, Seminole, Lake, and Volusia counties, and we match sealant products to your specific roof material type.
Need mobile RV repair in Apopka? Call (407) 326-5500 for same-day service throughout Orange, Seminole, Lake, and Volusia counties. Flat-rate pricing, no towing fees.