Before you begin: Use your RV and component manuals for model-specific procedures. Stop and use a qualified professional for electrical, propane, structural, or other work beyond your training.
Four places to inspect first
A simple top view of a typical RV roof.
- 01
Edges & seams
Look for visible gaps, lifted sealant, and changes at roof-to-wall and cap joints.
- 02
Vents & skylights
Check the visible seals around openings for cracks and signs of water entry.
- 03
AC opening
Look for staining around the ceiling assembly. Follow the unit manual for gasket checks.
- 04
Roof surface
Note punctures, bubbles, or soft areas. Confirm roof material before selecting products.
Identify the roof material first
RV roofs may use TPO, EPDM rubber, fiberglass, aluminum, or another surface. Your owner’s manual or manufacturer can identify it. That matters because cleaners, sealants, and coatings are not universally compatible.
If you cannot confirm the material, do not apply a strong solvent or a new coating. Use a mild cleaning method approved by the manufacturer until you know what you have.
Inspect before washing
Check seams, vents, skylights, AC openings, antennas, and front and rear cap joints. Look for lifted sealant, cracks, bubbles, punctures, soft spots, and signs of water entry inside the RV.
Take photos of each suspect area. A soft or spongy roof can indicate hidden structural damage and needs professional evaluation before cosmetic resealing.
Clean gently and rinse thoroughly
Work from a stable ladder or approved roof access. Roofs can be slippery, and not every RV roof is walkable. Use a cleaner approved for the roof material, a soft brush or microfiber tool, and plenty of clean water. Protect sidewalls from runoff when the product instructions require it.
Avoid pressure washers, abrasive brushes, and unapproved household chemicals. They can damage membrane surfaces, seams, or graphics. Let the roof dry fully before sealing.
Reseal the right places
Remove loose failed sealant only as the manufacturer and sealant maker direct. Clean and dry the area, then apply a compatible sealant with the specified overlap and cure time. Vertical seams and horizontal rooftop seams may need different products.
Do not apply fresh sealant over dirt, moisture, or a structural leak. If a seam has separated or the roof is soft, repair the underlying issue first.
Keep a repeatable schedule
Inspect the roof before and after storage, after severe weather, and at intervals in your RV manual. Note each inspection and product used. Consistent small inspections usually catch more than an annual emergency wash.
Manufacturer manuals & further reading
Use these official resources to find details for your equipment. Match the brand, model, and revision; another RV’s procedure may not apply to yours.
- Dicor roof care and maintenance
Find care information for listed Dicor roofing products. Confirm your membrane and sealant first; the same cleaner or coating is not suitable for every RV roof.
This guide is general educational information, not a substitute for your RV’s manuals or professional inspection.