Polyurethane Sealant seals expansion and control joints.

Press Release Summary:




Suited for vertical and horizontal construction applications, 2-component Chem-Calk® 505 seals expansion and control joints in precast concrete construction and metal curtain walls, as well as perimeters of door and window frames and other building components. Non-sag, architectural-grade formulation is solvent-free and meets requirements of ASTM C920, Class 25, Use T, and U.S. Green Building guidelines. Available in 1.5-gal plastic pails, Chem-Calk 505 can be colored with Flex-Pak® Colorants.



Original Press Release:



Bostik Introduces Chem-Calk 505



Middleton, Mass. - Bostik Inc.'s Construction & Industrial (C&I) Business Unit has developed Chem-Calk® 505, a new, two-component, polyurethane sealant for vertical and horizontal commercial construction applications. The non-sag, architectural-grade formulation is designed to seal expansion and control joints in precast concrete construction and metal curtain walls, as well as the perimeters of door
and window frames and other building components.

Replacing Chem-Calk 500, the innovative Chem-Calk 505 offers upgrades in its ease of mixing and tooling, as well as property improvements in hardness, modulus and tensile strength. Chem-Calk 505 also delivers improved handling thanks to its consistent viscosity over a broad temperature spectrum.

Just as important, the Chem-Calk 505 Green Formulation delivers all of these upgrades while being one-third lighter (4.9 pounds less per gallon) than its predecessor.
"Chem-Calk 505 is solvent free, yet maintains excellent adhesion to concrete and other building materials," says James Downing, Bostik C&I Market Manager - Construction Products. "With Chem-Calk 505, we were able to engineer a true Green Formulation, while improving all of the sealant's key properties. Chem-Calk 505 meets the strict testing requirements of ASTM C920, Class 25, Use T, and U.S. Green Building guidelines."

Available immediately, Chem-Calk 505 comes in convenient, lightweight 1.5-gallon plastic pails featuring easy zip-strip opening. Its predecessor came in metal pails.
Another key upgrade with Chem-Calk 505 is its Flex-Pak® Colorants used to expand the color palette available to contractors utilizing a flexible packaging design.

"No more pouring colorants from 8-ounce plastic cups," says Kurt Zintner, Bostik Technical Service Manager - Construction Sealants & Adhesives. "Chem-Calk 505 makes coordinating building material colors easier than ever. Its Flex-Pak Colorants squeezable packets are easier to open, use, transport and dispose of."
Chem-Calk 505 has a smooth, creamy consistency that is easy to mix and gun, and its physical properties remain stable over time - even under severe weather conditions.
"The development of Chem-Calk 505 marks yet another contractor-driven green building innovation by Bostik," Downing adds. "We refuse to rest on our laurels."

About Bostik

Based in Middleton, Mass., Bostik Inc. is one of the largest manufacturers of adhesives and sealants in the world. The company operates production facilities and sales offices in dozens of nations across five continents. Bostik's parent company, TOTAL S.A., is a $246 billion-a-year conglomerate with extensive interests in oil exploration, petroleum refining specialty chemicals formulation. Bostik produces adhesives, sealants and coatings for automotive and aircraft interiors, MROs (maintenance/repair operations), marine and transportation markets, industrial and product manufacturing, packaging, disposable nonwovens, and residential and commercial building projects. Bostik's Construction & Industrial (C&I) Business Unit manufactures
and markets, among other leading brands, Bostik Home® residential construction and
Chem-Calk® commercial construction sealants and adhesives. For more information, please call 888-592-8558 or visit www.bostik-us.com.

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