Willseal 150

Primary Vertical Joint Application

Willseal® 150 is a pre-compressed, self-expanding polyurethane 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 (PSA) on one side for ease of installation. Willseal 150 self-expands to fill the joint creating a permanent, elastic, vapor-permeable weathertight seal. 

Basic Uses
  • Primary expansion, control, isolation & retrofit joints
  • Primary construction joints
  • 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 vapor, dust, acoustical and air control
  • Manufactured housing and log homes