This specification covers a single component protective roof coating composed of solvent-borne moisture curing urethane elastomeric polymer, to which various pigments or other additives have been added to give the required physical properties. The product, as manufactured, shall be in liquid form for application to spray polyurethane foam (SPF) surfaces by brushing, rolling, or spraying. However, guidance for its application is not addressed here. Coatings shall be tested and conform accordingly to specified liquid property requirements as to viscosity, and volume and weight of solids. Dry films shall also adhere to the following physical property requirements, when tested as appropriate: initial percent elongation at break; initial tensile strength at maximum stress; final percent elongation at break after accelerated weathering; permeance; water absorption; adhesion; fungi resistance; tear resistance; and low temperature flexibility.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers a single component, moisture cured, elastomeric urethane polymer coating used as a protective coating for spray polyurethane foam roofing systems.
1.2 This specification does not provide guidance for application.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following precautionary caveat pertains only to the test method portions, Sections 5 and 6.
1.5 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 and health practices and determine the applicability of regulatory requirements prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D16 Terminology for Paint, Related Coatings, Materials, and Applications
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D471 Test Method for Rubber Property--Effect of Liquids
D522 Test Methods for Mandrel Bend Test of Attached Organic Coatings
D562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer
D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
D903 Test Method for Peel or Stripping Strength of Adhesive Bonds
D1079 Terminology Relating to Roofing and Waterproofing
D1644 Test Methods for Nonvolatile Content of Varnishes
D1653 Test Methods for Water Vapor Transmission of Organic Coating Films
D2196 Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational (Brookfield type) Viscometer
D2370 Test Method for Tensile Properties of Organic Coatings
D2697 Test Method for Volume Nonvolatile Matter in Clear or Pigmented Coatings
D4798 Practice for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Xenon-Arc Method)
G21 Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
elastomeric coating; moisture cured; polyurethane coating; roof; spray polyurethane foam;
ICS Number Code 91.100.60 (Thermal and sound insulating materials)
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