Lucas Semi-Self-Leveling Pocket Sealer #4500 - Full Range is a versatile, one-component, non-shrink polyurethane sealant designed for liquid flashing systems and sealing roof penetrations, metal roof seams & fasteners, inlaid gutters, polyurethane foam, PVC and EPDM roofs. It’s also suitable for TPO roofs when primed with Lucas #8015. With a semi-self-leveling formula and wide temperature tolerance, it tackles roof repairs with minimal tooling and fuss.

Key Features & Design

• One component, non-shrink, advanced technology polyurethane sealant designed for the construction of liquid flashing systems and sealing roof penetrations, metal roof seams & fasteners, inlaid gutters, polyurethane foam, PVC and EPDM roofs.
• Suitable for TPO roofs when primed with Lucas #8015.
• Primer recommendations For smooth surface modified bitumen and asphalt BUR, priming with Lucas #4015 2 Part Epoxy Primer is recommended.
• Compatibility with Lucas water-based acrylic coatings.
• Semi-self-leveling formula enables general roof repairs, seal roof penetrations, gutters and metal roof seams & fasteners with minimal tooling.
• Viscosity viscous enough to avoid running on steep slope applications and drain-out issues encountered with more liquid sealers.
• 100% solids which results in zero shrinkage.
• Packaging Conventional plastic caulk tube or 2 liter spout pouch packaging eliminates the requirement for custom application equipment and waste associated with larger packaging.
• Temperature range Performance range is –40° F to +200° F.

Designed for durability in harsh roof conditions, Lucas #4500 delivers reliable sealing for flashing, penetrations, and seams, with straightforward packaging you won’t dread opening after a long day on the roof.