Inside a Professional RV Roof Resealing Service

Owners are often surprised by what a professional reseal visit mostly looks like: hours of unglamorous scraping and washing, and then — almost as an afterthought — the part where new product goes on. That proportion is the point. Here’s the whole visit, in order, including the corners that cheaper jobs cut.

Before anyone drives anywhere

The job starts with your photos. They tell us the membrane type, the penetration count, and the sealant condition, which means the van arrives carrying the right cleaner, primer, tape, and coating for your roof instead of a universal guess. We also watch the forecast: sealants and coatings need a dry surface, a dry day, and workable temperatures to cure, which is why this work lives between late spring and early fall in Ontario — and why a visit sometimes moves a day rather than gambling against rain.

Step one: inspect and photograph everything

Before a scraper touches anything, the full roof gets documented — every penetration, every seam, every prior repair. Partly for your records, partly because this is where surprises should surface: a soft spot near a vent changes the plan from resealing to a repair conversation, and finding it now beats finding it mid-job.

Step two: remove the failed sealant

The slowest, least photogenic, most important hours of the visit. Old cracked lap sealant comes off with plastic scrapers — plastic so the membrane underneath survives — one bead at a time, including the archaeology on roofs with years of patch-over-patch layers. Skipping this is the single biggest difference between quotes: a fresh bead laid over cracked old sealant inherits every crack beneath it, usually within a couple of seasons.

Step three: wash and de-chalk

The roof gets washed with a cleaner compatible with its membrane, chalking gets scrubbed back to sound surface, and then the roof gets time to dry — actually dry, checked with a moisture meter, not judged by eye. Coating over damp is one of the two classic ways coatings fail, and “washed and coated the same afternoon” is how it happens.

Step four through six: repair, prime, tape

Anything the inspection flagged gets repaired before sealing — tears patched, questionable spots resolved. Primer goes down where the membrane and product system call for it (chalky EPDM and slick TPO both demand it, for opposite reasons). Seams, end caps, and high-risk transitions get reinforced with seam tape so the coating has a backbone at the exact places roofs actually fail.

Step seven: two coats, with patience between

The coating goes on at the thickness the system specifies — thin looks the same on day one and behaves very differently in year three. Around every vent, skylight, and bracket it’s brushwork, not roller work. Then the first coat gets its full cure window before the second goes on. That waiting is invisible in the finished roof and essential to it.

Step eight: the photos you keep

The finished roof gets photographed the same way it was documented at the start. You see what we saw, before and after — useful for resale, for insurance conversations, and for keeping us honest.

When you’re comparing quotes, ask each company to walk you through their version of this list. The product names matter less than which steps are missing.