Product Overview

CRL M64, a one-part, moisture-curing, gun-grade modified polyurethane sealant that doesn't need a primer on most common construction surfaces. It is built to be durable, flexible, and to deliver outstanding performance in moving joints.

Features:

• One-part smooth finish formula with primerless adhesion on most common construction surfaces, including KYNAR® coated metals
• AAMA approved 
• VOC compliant 
• only nine g/L 
• UV resistant/non-yellowing

Basic Uses: CRL M64 Modified Polyurethane Construction Sealant is specially formulated to surpass traditional VOC solvent polyurethanes for sealing moving joints in concrete, masonry, metal, and other basic perimeter joint applications. It excels in all joints between framing (door and window) and the building structure in both storefront and curtain wall applications to secure a watertight installation. This advanced polymer formula offers excellent adhesion to fluoropolymer paint coatings for metal surfaces, including KYNAR®, Duranar®, and Duranar® Sunstorm™ coatings, as well as standard metal, aluminum, steel, galvanized steel, plastics, vinyl, glass, wood, concrete, brass, and other common building substrates.

Product Warning: Limitations: Do not apply over damp or contaminated surfaces. Use with adequate ventilation. Not recommended for surfaces with special protective or cosmetic coatings without prior consultation of the manufacturer. Should not be applied to mirrors or unpredictably absorptive surfaces such as marble, limestone, or granite unless a standard of appearance has been agreed upon as a result of testing for stain and/or discoloration.