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1.1 This specification addresses the minimum performance for flexible laminate protective jacket and a pressure sensitive adhesive tape for use over thermal insulation on pipes, duct, and equipment operating at both above and below ambient temperatures and installed outdoors, above ground. It does not include the following: protective metal jacket, homogenous plastic film jacket materials, modified asphalt jacket materials, and butyl rubber membranes.

1.2 This type of material shall consist of multiple layers of polymer film and aluminum foil laminated to one another with layer(s) of reinforcement as an option.

1.3 Jacket and tape materials covered by this specification shall have low water vapor permeance values; however, they are not necessarily always used as vapor retarders. The water vapor transmission tests address the jacket and tape materials only and do not address overlaps or taped joints. All materials shall be weather resistant and intended to have sufficient strength to provide protection for mechanical insulation.

1.4 Materials covered under this specification shall have a high, medium, or low surface emittance.

1.5 The top layer shall be on of the following: aluminum foil, a polymer film, or a polymer coating.

1.6 This specification includes jacket materials both with and without factory applied, pressure sensitive adhesives. The tape materials covered by this specification always have a factory applied, pressure sensitive adhesive.

1.7 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.