Dicor 551LSG-1 HAPS-Free Non-Leveling Lap Sealant – 10.3 oz, Grey | RV Roof Sealant for EPDM & More

Overview

Dicor 551LSG-1 HAPS-Free Non-Leveling Lap Sealant is designed to create a dependable, watertight seal along a roof’s edge, around air vents, vent pipes, and screw heads. Packaged in a convenient 10.3 oz tube, this grey sealant is engineered for EPDM roofing but proves compatible with a broad range of roofing materials, including Dicor DiFlex II, Tufflex, PVC, and PriTEK TPO.

The formula delivers strong adhesion to metals, wood, vinyl, concrete, and more, while staying flexible over time. Its color-matched appearance helps blend with many RV roof finishes, and the product is designed to minimize staining or discoloration of surrounding materials. In addition to sealing performance, the sealant’s heat-reflective characteristics may contribute to a practical, energy-conscious roof appearance over time.

Key Benefits

• Watertight seal along roof edges, vents, and screw heads for reliable protection.
• Non-leveling, flexible film that tolerates rooftop movement and temperature changes.
• HAPS-free formulation for safer handling and better indoor air quality considerations.
• Grey color matches many RV roof finishes and helps prevent staining of applied materials.
• Excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal, and concrete.
• Continuous seal that remains flexible, reducing the need for frequent reapplication.

Compatibility and Use

• Primarily formulated for EPDM roofing but compatible with most common roof materials including Dicor DiFlex II, Tufflex, PVC, and PriTEK TPO.
• Effective on substrates such as aluminum, masonry, wood, vinyl, galvanized metal, and concrete.
• Ideal for sealing roof edges, vents, vent pipes, and screw heads to help maintain a clean roof line.

Notes on Performance

The product is designed to stay flexible and maintain its seal over time, even as the roof expands and contracts with temperature changes. While results can vary with application and climate, customers often notice a stable, long-lasting seal that supports easier roof maintenance. The gray color and durable adhesion contribute to a professional appearance and reliable protection against water intrusion.

Energy and Aesthetics

Heat-reflective properties may help reduce surface temperatures on exposed roof areas, contributing to a more comfortable interior environment in hot weather. The color and sealant behavior are intended to minimize visible staining and maintain a neat roofline over time.