Liquid Rubber RV Lap Sealant – Self-Leveling Roof Sealant for Vents, Skylights & Seams (White) | 4 Pack

Liquid Rubber RV Lap Sealant is a self-leveling solution designed to flow and level on its own, creating a smooth, waterproof seal around horizontal roof details. Flowing during application is normal and expected, helping to reduce manual tooling on curved or flat profiles. This sealant is specifically formulated for horizontal RV roof areas like vents, skylights, AC units, antenna mounts, and roof seams. It is not intended for vertical surfaces, sidewalls, or filling open gaps or cracks.

What you get with a detailed RV roof sealant

• Self-leveling, flexible, and waterproof: forms a durable barrier that moves with temperature changes and road vibration, helping to guard against water intrusion.
• Designed for roof-detail sealing: ideal around vents, skylights, AC units, and seams; complements a broader roof system when paired with additional items.
• Complete system compatibility: recommended for use with Liquid Rubber Seam Tape and Liquid Rubber RV Roof Coating for larger seams or full-system needs.

Preparation and application essentials

• Surface prep is required: apply only to clean, dry surfaces; do not apply over silicone, and remove existing silicone before use.
• Material compatibility: suitable with EPDM, TPO, fiberglass, metal, aluminum, PVC, and ABS when properly prepared.
• Coverage and tool guidance: a 10 oz tube covers about 22 linear feet at a 5/16 inch bead; typical 30 ft RV may require ~4 tubes; apply with a standard caulking gun, and puncture the inner seal after nozzle cutting.

In real-world use, you might notice a smooth, even bead that settles into horizontal roof profiles, forming a discreet, white seal that blends with many roof colors while delivering a weather-ready barrier. While results can vary with roof condition and layout, the sealant’s design aims to provide a flexible, durable layer that accommodates roof movement and temperature shifts. For RV owners planning a preventative maintenance approach, this product serves as a targeted option for sealing around vents, skylights, and seams, especially when used alongside compatible Liquid Rubber roof products as part of a broader roof care routine.