by Arthur L. Sanders, AIA, and Lawrence E. Keenan, AIA, PE In both new construction and rehabilitation projects, sealant joints are often given short shrift when it comes to time and attention, as well as budget. Sealants often comprise the lowest percentage of a project’s overall cost—this is surprising considering all these products are asked to do.
From October 2 to 4, the American Chemistry Council’s (ACC’s) Center for the Polyurethanes Industry (CPI) will host its Polyurethanes Technical Conference at New Orleans Marriott in Louisiana.
A wide range of polyurethane foam products is available in various densities and open-cell content, each exhibiting different performance characteristics such as application temperature, moisture resistance and R-value, and compressive strength.
Use of sprayed polyurethane foam (SPF) insulation has steadily become more widespread. Used in residential and commercial structures of various types, SPF is a high-performance option for the building envelope.
Polyurethanes have the broadest range of any product group, but they tend to combine toughness and flexibility with adhesive properties. This article examines the chemistry behind these coatings, seeking to give specifiers the information needed to select the right material for a project.
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