This specification covers testing and material properties of water-dispersed protective roof coatings composed of a water-based acrylic latex elastomeric emulsion polymer, to which various pigments and other additives have been added to give the required physical properties. The product, as manufactured, shall be in liquid form for application to the roof surface by brushing, squeegeeing, rolling, or spraying. Guidance for its application is not addressed here. Coatings shall be tested and adhere to liquid property requirements as to viscosity, and volume and weight of solids. Conversely, films shall also conform to dry physical properties, as follows: initial percent elongation at break; initial tensile strength at maximum stress; final percent elongation at break after accelerated weathering; permeance; water swelling; adhesion; fungi resistance; tear resistance; and low temperature flexibility after accelerated weathering.
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 liquid-applied water-dispersed acrylic latex elastomeric protective roof coatings.
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 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 limitations 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.
C794 Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants
D16 Terminology for Paint, Related Coatings, Materials, and Applications
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
acrylic; elastomeric coating; roof;
ICS Number Code 25.220.60 (Organic coatings); 91.100.50 (Binders. Sealing materials)
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Citing ASTM Standards
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