Liquid Rubber RV Lap Sealant tube ready for roof detailing and waterproofing
Bead application of Liquid Rubber RV Lap Sealant demonstrates self-leveling flow for a smooth roof seal
Liquid Rubber RV Lap Sealant on a roof seam creating a waterproof barrier
Sealing a vent with Liquid Rubber RV Lap Sealant for leak protection
Skylight seal with Liquid Rubber RV Lap Sealant for weatherproof corners
Liquid Rubber RV Lap Sealant compatible with EPDM, TPO, fiberglass when prepared

Liquid Rubber

Liquid Rubber RV Lap Sealant — Self-Leveling Roof Sealant for Vents & Skylights (White, 10 oz, 1 Pack)

High-performance tools and home improvement made for confident daily results

$28.96

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Why customers choose TaskHolt Tools

Overview

Liquid Rubber RV Lap Sealant is a self-leveling solution designed to flow by design, creating a smooth, waterproof seal around horizontal roof details. Its natural flow during application is expected, helping you achieve a clean, continuous bead without excessive tooling.

Key benefits at a glance

  • Self-leveling on horizontal details: The formula moves to form a uniform seal along roof seams, vents, and fixtures.
  • Flexible, waterproof barrier: Adapts to temperature shifts and road movement to help reduce leaks.
  • Part of a complete roof system: Works with Liquid Rubber Seam Tape and RV Roof Coating for extended protection where needed.
  • Material compatibility with prep: Designed for EPDM, TPO, fiberglass, metal, aluminum, PVC, and ABS when properly prepared.
  • Coverage details: Each 10 oz tube covers about 22 linear feet at a 5/16 in bead; typical 30 ft RV may require ~4 tubes.

Ideal uses on horizontal roof features

  • RV vents and skylights
  • Air conditioning units, antenna mounts, and roof seams
  • Detail sealing around roof penetrations and joints

How to prepare and apply

  • Surface prep: Apply to clean, dry surfaces. Do not apply over silicone; remove existing silicone completely.
  • Surface compatibility: Ensure proper prep for EPDM, TPO, fiberglass, metal, aluminum, PVC, and ABS.
  • Application basics: Cut the nozzle, puncture the inner seal, and seal along the intended bead using a standard caulking gun.

Tips for best results

  • Expect the product to flow and level during application for a smooth bead.
  • For larger movement areas or full roof systems, pair with Liquid Rubber Seam Tape and RV Roof Coating.
  • Avoid vertical surfaces and large, open gaps; this product targets horizontal details.

Color and outcome: White finish helps maintain roof aesthetics while delivering a durable, waterproof seal around critical roof details.

FAQ

Q: How do I apply Liquid Rubber RV Lap Sealant on horizontal roof details?

A: Prepare a clean, dry surface; cut the nozzle, puncture the inner seal, and apply with a caulking gun. It self-levels to form a smooth, waterproof bead.

Q: What surfaces is this sealant compatible with for best results?

A: Compatible with EPDM, TPO, fiberglass, metal, aluminum, PVC, and ABS when properly prepared; not for vertical surfaces.

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