Willseal 600 & 600S

Breathable Primary Seal for Vertical Applications

Willseal^® 600 is a pre-compressed, self-expanding foam joint seal, engineered to perform as a highly flexible, weather-tight, primary seal in vertical exterior applications. The high-density polyurethane foam is impregnated with a modified flame retardant, hydrophobic, UV stable acrylic resin and treated with a pressure-sensitive adhesive on one side for ease of installation. Willseal 600 self-expands to fill the joint creating an elastic, vapour-permeable, weathertight seal.

Basic Uses

Typically used as an external or interior joint sealant, Willseal 600 can be used as a primary seal in vertical applications. The following are acceptable applications for Willseal 600:

• Expansion, control, isolation & retrofit joints
• Secondary construction joints behind a wet seal
• Joints in pre-cast concrete, masonry, brick and facades
• Roofing and insulated metal panels
• Exterior insulation finish systems (EIFS)
• Primary seal in starter track assemblies for window wall
• Interior vapour, dust, acoustical and air control