Best RV roof sealants for self-application

Top pick: Dicor Self-Leveling Lap Sealant — the standard for a reason. It flows out flat on horizontal roof surfaces, bonds to EPDM, TPO and PVC membranes, and stays flexible through sun and freeze cycles, so it's the safest bet for sealing around vents, skylights, antennas and seams.

Who the others suit:

• Camco Pro-Tec Self-Leveling — a solid budget stand-in for the same jobs; good if you want a classic-white match and a 1/4"–3/8" bead.
• Forever Extra Leveling Lap Sealant — the long-haul choice: works on EPDM, TPO, fiberglass and metal, and carries a 20-year warranty.
• Geocel ProFlex RV Sealant — non-leveling, so it's the one for vertical surfaces, sidewalls and trim where a self-leveler would run.
• Kohree / Aiqeek multi-packs — buy these when you're resealing the whole roof and want several tubes on hand.
• Dicor 501LSB-1 (black) — same chemistry in black, for dark roofs and trim.

Tip: clean and dry the area, remove loose old sealant, and lay a generous bead that overlaps both sides of the seam. Self-levelers are for flat surfaces only.