Most manufacture’s recommend to check the roof sealant every 90 days, and to touch up or reseal as needed. The lap sealant is used to seal all edges and penetrations to maintain waterproofing. It comes in multiple consistencies, and the factory typically uses white lap sealant with the same consistency for everything on the roof. Readily available to consumers versions come in self-leveling (horizontal surfaces) and non-sag (vertical surfaces).

Shop Talk | # 16 – What Sealants Do I Use On My RV? – let’s compare self-leveling and non-sag


$1400 10’-17’     $1600 18’-25’      $1800 26’-33’     $2000 34’-40’

  • Perform roof inspection to check for sun damage or aged items that need to be replaced prior to service.
  • Remove old sealant (as needed) to prep following areas for resealing: Front and rear moldings, ceiling roof vents, skylight, refrigerator vent, plumbing vents, TV and radio antenna, satellite dish, solar mounts, ladder stations and side seams.
  • Service Includes: 16 tubes of self-leveling sealant, 2 tubes non-sag sealant, solvent cleaners, and shop supplies. (Additional charge for sealants as needed.)
Examples of what to look for on your roof.