RV roof and seal care in the rainy season: inspect before, walk after.

Florida's rainy season doesn't rain like other places. It rains hard, nearly every afternoon, often sideways — and it does it for months. A roof seal that would pass in a dry climate gets audited daily here, and the failure mode is patient: water in small amounts, in the same places, until sealant work becomes structure work. This guide is the inspection rhythm that keeps that from happening — what to check before the season, and the fifteen-minute walk to run after any serious storm.

Know what you're looking at

• Lap sealant — the self-leveling compound over every roof penetration and seam: vents, skylights, antennas, the AC, cap seams. It's a wear item with a service life, not a permanent part of the roof.
• The membrane — EPDM, TPO, or fiberglass under the sealant. Sound membrane plus failed sealant is a reseal; damaged membrane is a repair; soft decking under either is a bigger conversation (see what roof work costs and why).
• The AC gasket — the foam seal the roof AC sits on. It compresses and ages, and its leak presents as an "AC drip" inside.
• Slide seals and window seals — not roof parts, but the same rain finds them, and their leaks do the same damage lower down: floors and walls.

The pre-season inspection (spring, before the daily storms)

• Press-test the sealant. Sound lap sealant is firm and bonded at the edges. Press along every run with a fingertip: lifting edges, cracks, bubbles, and chalky crumbling all mean the seal is done there, even if it hasn't leaked yet.
• Clear the roof's drainage story. Leaf litter and debris dam water against seams and around the AC. On oak-shaded lots this is a spring and mid-summer job, not an annual one.
• Check the gutters and spouts where fitted, and where the roof water actually goes — it should leave, not pool against a slide topper or a seam.
• Walk softly and feel for soft. Spongy spots under the membrane mean moisture has been there a while. Mark them; that's inspection information for a tech, and it changes a reseal conversation into a repair conversation early, while it's still cheap.
• Photograph the roof as-found. Dated photos are your baseline for the post-storm walk — and your evidence if a storm ever makes it an insurance matter.

The post-storm fifteen-minute walk

• Inside first: ceiling corners, slide-room floors at the edges, window frames, and under-cabinet spaces. New stains, damp carpet corners, and fresh musty smell are findings — write down where and when.
• Then the roof, when it's safe and dry enough: new debris, lifted sealant where branches landed, standing water anywhere it didn't used to stand.
• Don't caulk in a panic. The hardware-store silicone tube is the most expensive roof product in Florida: it doesn't bond properly to RV membranes, it contaminates the surface for the real sealant that follows, and removing it later is billed by the hour. Tarp a real leak if you must; seal it properly or have it sealed.

Owner fixes vs. tech fixes

Owner territory: clearing debris, keeping drains and gutters open, washing the membrane with the maker's approved cleaner, spotting and documenting changes, and resealing a single small, accessible fitting if you know your roof material and use the correct lap sealant. Tech territory: full reseals, membrane section repairs, AC gasket replacement, anything involving soft decking, and any leak whose source you can't identify — water travels, and sealing where it appears instead of where it enters is the classic wasted reseal. Our roof repair page covers what happens on a mobile visit.

The rhythm, on one line each

• Spring: full inspection, press-test, clear debris, schedule reseal work in the dry window if it's due.
• Rainy season: post-storm walks after anything serious; a mid-season debris clear on shaded lots.
• Fall: second look before the snowbird season — the rig is about to be lived in daily, and small leaks become big damage fastest in an occupied, air-conditioned rig.
• Always: photos. The cheapest documentation habit in RV ownership.

More owner guides

By Josh Tomlinson — Josh operates Florida Mobile RV Service and writes these guides. About the service →

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