Dicor | Grey Non-Sag Sealant | 551LSG-1 | 10.3 oz | Grey

RV Roof Lap Sealant – EPDM & TPO Compatible

This high-performance lap sealant is engineered for reliable sealing on RV roofs and exterior joints. Compatible with both EPDM and TPO roofing membranes, it delivers strong, long-lasting adhesion to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass, and concrete. Designed for aftermarket applications, this sealant is one of the most widely used and trusted products in RV service and repair.

The sealant is color-matched (see specifications for available colors) and UV-stabilized to resist deterioration, cracking, and discoloration over time. It will not stain or damage compatible roofing materials, ensuring a clean, professional finish.

Key Features

• Compatible with EPDM and TPO roofing

• Excellent adhesion to common RV construction materials

• UV-stabilized for long-term durability

• Non-staining and non-discoloring

• Ideal for aftermarket RV roof sealing and repairs

Directions for Use:
Clean surface of all dirt, loose paint, rust, oil and grease. Allow surface to dry before applying sealant. Use standard caulking equipment to apply sealant. In cold weather, warm container at room temperature before use for optimal flow.

Approximate Lap Sealant Cure Times:(approximate times for 50-70° F weather)

5 Minutes – Skins over
4 Hours – Waterproof
48 Hours – Cure 80%
30 Days – 100% Cure

Safety Information

Keep away from heat, sparks, and open flame. Use in a well-ventilated area to avoid inhaling vapors. If eye watering, headaches, or dizziness occur, increase ventilation, wear appropriate respiratory protection (NIOSH/MSHA approved), or leave the area. This product may cause irritation to the eyes, skin, nose, and throat.