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This first edition of Accepted IndustryPractices for Sheet Metal Lagging is intended for use by contractors, fabricators, and designers of heating equipment and industrial process facilities. Due to high equipment operating temperatures, such equipment often requires the application of thermal insulationwhich, in turn, is covered, or lagged, with metallic or plastic material systems. Themain purpose of the metallic or plastic covering is to protect themore fragile insulating material from both the effects of weather and the destructive action of normal traffic or other forms of damage in an industrial setting.

The Lagging Task Force was formed to collect, review, organize and publish accepted industrial practices for the application of sheet metal lagging materials to industrial duct, pipe, tanks, boilers, furnaces and other appurtenances. This document is the result of that effort.