CHEM-CALK 915 - Bronze
Bostik® Chem-Calk® 915 sealant is a one-component, contractor construction grade, smooth polyurethane sealant capable of dynamic joint movement totaling 50% of original joint geometry (±25%).
The sealant cures to a tough, flexible rubber when exposed to moisture present in the atmosphere.
Chem-Calk® 915 polyurethane sealant has a consistency like toothpaste, its physical properties will remain relatively stable over time and in varying weather conditions. Its physical properties are relatively unchanged over a wide temperature range, -40°F to 150°F (-40°C to 66°C). ASTM C920, TYPE S, GRADE NS, CLASS 25, USE NT, A AND M.
• US Federal Specification TT-S 00230C (COMB-NBS) for one-component sealants as Class A, non-sag.
• Canadian Specification CAN/CGSB 19.13-M87. n CARB and SCAQMD Compliant.
Meets VOC Requirements for OTC Regulation. Designed for sealing expansion and control joints in precast concrete panels, for sealing various roofing and siding applictions, and for sealing perimeters of doors, windows, and other wall penetrations.
• Sealant cures to form a durable, flexible bond with most building materials in any combination including stone, masonry, ceramic, marble, wood, steel, aluminum, fiber cement board and many other synthetic materials.