Dicor 505LSW EPDM Lap Sealant – White, 10.3 fl oz | Flexible, UV-Stable Roof Sealant

Overview

Dicor 505LSW EPDM Lap Sealant is a HAPs-free, color-matched solution designed to create durable, flexible seals on EPDM roofs and common roofing substrates. The white formula offers a clean, professional finish along roof edges, around vents, and over screw heads. It’s formulated to be easy to apply yet robust enough to perform in outdoor conditions, helping you approach roofing projects with confidence.

Designed for versatility, this sealant adheres well to a broad range of materials, including aluminum, masonry, wood, vinyl, galvanized metal, and concrete. Whether you’re sealing a vent penetration or a roof seam where different materials meet, the product is built to provide a reliable bond that stays put over time.

One key strength is its ongoing flexibility. The sealant remains pliable as temperatures rise and fall, wind shifts occur, and building movement takes place. This helps maintain the integrity of the seal as conditions change, reducing the need for frequent rework on typical roof lines.

Key benefits

• Watertight sealing along roof edges, vent openings, and screw heads to help deter leaks.
• Strong adhesion to metal, masonry, wood, vinyl, and concrete for mixed-material roofs.
• Color-matched finish with UV stabilization to resist discoloration and preserve appearance.
• HAPs-free formulation with no hazardous air-polluting solvents for safer handling.
• Continued flexibility supports long-term performance and easier rework if needed.

Real-life use cases

• Sealing EPDM roof transitions near vents and penetrations in homes or small commercial projects.
• Edge sealing on parapets, skylights, and around screw heads where water intrusion is a concern.
• Repairs on aluminum, concrete, or wood substrates where good adhesion matters for a durable seal.

Application tips

• Prepare surfaces by cleaning and drying; remove dust, oils, and moisture for best adhesion.
• Cut nozzle at the desired angle to control bead size and flow along seams.
• Apply a steady bead, then tool with a caulking tool or damp finger for a smooth finish.

Storage and safety

Keep tubes sealed and store in a cool, dry place away from direct heat. Use within the typical product life indicated by the manufacturer, and follow local regulations for disposal.

Product details

Each tube contains 10.3 fl oz of sealant. The white color blends with most roof lines, and the UV-stable formula helps protect against sun exposure and discoloration. It meets industry standards for flexible, reliable performance.

Note: Actual results vary with surface preparation and substrate conditions. Dicor 505LSW is designed to complement a complete roofing system and is best used as part of a thorough sealing strategy.