RV and Camper Care in Central Florida: Oxidation, Mildew, and Storage
Most RVs spend far more time parked than driving, and in Central Florida, parked is the dangerous state. A rig that sits in a Lakeland storage lot from May to October is not resting. It is being cooked by UV, soaked by afternoon storms, and slowly turned into a terrarium on the inside. Everything below is what actually goes wrong and what you can do about it.
Gelcoat Oxidation: The Chalky White Problem
Run your hand down the side of an older fiberglass RV and it comes away white and powdery. That is oxidation. The gelcoat is a pigmented resin layer, and UV breaks down its surface over time, leaving a chalky, porous, dead layer where a glossy one used to be.
Two things matter here. First, it is UV plus time — not dirt, and not something a wash fixes. You cannot clean oxidation off. It has to be removed with an abrasive polish or a dedicated oxidation remover, because you are physically taking off the degraded layer to expose good gelcoat underneath.
Second, once you have done that work, you have to protect it or you get to do it all over again next year. Bare, freshly polished gelcoat is wide open to the sun, so a wax or sealant on top is the entire point of having polished it. The prevention side is unglamorous: keep something on the surface, and keep the rig out of direct sun when you can. Covered storage is worth what it costs in this state.
The Roof Is Where the Money Is
Nobody looks at the roof, and the roof is where every expensive RV problem begins.
- Know what you have. Most rigs have an EPDM or TPO rubber membrane; some have fiberglass. It matters, because the cleaning rules are different.
- No petroleum solvents on rubber roofs, ever. No citrus degreasers, no harsh solvents — they break down the membrane. Use a mild cleaner made for RV roofs and a soft brush, and rinse thoroughly. And do not pressure-wash a membrane roof. You will lift a seam and you will not know you did it until the ceiling stains.
- Inspect the sealant seams. Around every vent, skylight, antenna, AC unit, and along the front and rear caps. That self-leveling sealant cracks with age and thermal cycling, and cracked sealant is how water gets in. It is the single most common way an RV goes from a vehicle to a mold problem.
- Do it before storm season, not after. Find the crack before the water does.
Black Streaks Down the Sides
Those dark vertical runs under the roof edge, the awning rail, and the window frames are not dirt from the road. They are roof runoff. Rain lands on the roof, picks up dirt and oxidized residue and dust, runs over the edge, and drags it down the sidewall — and then the sun bakes it in.
The right approach is chemistry, not force. Use a dedicated black-streak remover, work top-down in sections, let it dwell, and rinse before it dries. What you should not do is attack them with a stiff brush and an aggressive scrub, because on oxidized gelcoat that is not cleaning — that is sanding, and you will leave dull marks that are far more visible than the streaks were. If the streaks keep coming back fast, the roof is dirty. Clean the roof and the sidewalls stay clean far longer.
Awnings and Mildew
Fabric awning plus Florida humidity is a mildew factory. The rule is boring but absolute: never roll up a wet awning and leave it. If you have to roll it wet to get off a site, unroll it and dry it as soon as you are home. Clean it periodically with a mild soap, brush gently, rinse well, and let it dry fully extended before you close it. Once mildew establishes in the fabric weave it stains, and staining is very different from dirt.
The Interior Becomes a Terrarium
A closed RV sitting in a Lakeland August is a sealed box full of humid air and organic material. That is a mold incubator, and it is why so many stored rigs open up smelling like a basement.
- Move air or absorb moisture. Roof vent covers that let you crack the vents in the rain, plus moisture absorbers in the cabinets and the closet. If you have shore power in storage, a small dehumidifier is the best money you will spend.
- Take the food out. All of it. Not "most of it." Then leave the cabinets and the fridge propped open so air is not sitting still in a dark, damp box.
- Rodents. They come in through the underbelly, the wiring pass-throughs, and the water heater bay. Steel wool in the gaps, no food inside, and check periodically. A mouse in a stored camper does an enormous amount of wiring damage in a season and nobody finds out until spring.
Tires: Age Beats Tread
RV tires almost never wear out. They rot out. UV and ozone degrade sidewalls while the rig sits, and a tire with beautiful tread and a date code from seven years ago is a blowout waiting to happen on I-4. On a trailer, that blowout takes the fender and part of the sidewall with it. So cover the tires when stored, keep them off hot asphalt if you can, keep them inflated, and learn to read the date code. On an RV, age matters more than tread depth.
A Storage Prep Checklist
- Wash and protect the exterior before it sits, not after
- Clean the roof and inspect every sealant seam
- Dry the awning fully and roll it clean
- Empty and dry all tanks per your system's procedure
- Remove all food, prop cabinets and the fridge open
- Set moisture absorbers or run a dehumidifier
- Block rodent entry points
- Cover the tires and take weight off flat spots
- Disconnect or maintain the batteries properly
Being Straight With You
CB Mobile Detailing is a car and truck mobile detailing operation. Cars, trucks, SUVs, and vans — wash, interior, decontamination, protection.
If you own an RV or a camper, the advice above is genuinely what we would tell a friend, and if you want to talk about it, tell us what you are working with and we will tell you honestly what we can take on rather than pretending otherwise. In the meantime, the truck or SUV you tow with is squarely in our lane. That is what our mobile detailing service is built for, from Lakeland and Winter Haven out through the Orlando corridor — see our full service areas.
The Bottom Line
An RV in Central Florida is not damaged by driving. It is damaged by sitting: UV chalking the gelcoat, water finding a cracked seam, humidity growing mold in a sealed cabin, and sun rotting tires that have plenty of tread left. Prep it properly before it sits, check the roof before storm season, and it will still be worth something when you are ready to use it.
Not sure what fits?
Tell us what you are working with and we will give you a straight answer. CB Mobile Detailing comes to you in Lakeland, Orlando, and everywhere in between. Get a free quote or call (863) 529-4370 today.