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A01 STEEL, STAINLESS STEEL AND RELATED ALLOYS A04 IRON CASTINGS A05 METALLIC-COATED IRON AND STEEL PRODUCTS B01 ELECTRICAL CONDUCTORS B05 COPPER AND COPPER ALLOYS B07 LIGHT METALS AND ALLOYS C01 CEMENT C04 VITRIFIED CLAY PIPE C07 LIME AND LIMESTONE C09 CONCRETE AND CONCRETE AGGREGATES C11 GYPSUM AND RELATED BUILDING MATERIALS AND SYSTEMS C12 MORTARS AND GROUTS FOR UNIT MASONRY C13 CONCRETE PIPE C14 GLASS AND GLASS PRODUCTS C15 MANUFACTURED MASONRY UNITS C16 THERMAL INSULATION C17 FIBER-REINFORCED CEMENT PRODUCTS C18 DIMENSION STONE C21 CERAMIC WHITEWARES AND RELATED PRODUCTS C24 BUILDING SEALS AND SEALANTS C27 PRECAST CONCRETE PRODUCTS D01 PAINT AND RELATED COATINGS, MATERIALS, AND APPLICATIONS D04 ROAD AND PAVING MATERIALS D07 WOOD D08 ROOFING AND WATERPROOFING D09 ELECTRICAL AND ELECTRONIC INSULATING MATERIALS D11 RUBBER D14 ADHESIVES D18 SOIL AND ROCK D20 PLASTICS D35 GEOSYNTHETICS E05 FIRE STANDARDS E06 PERFORMANCE OF BUILDINGS E33 BUILDING AND ENVIRONMENTAL ACOUSTICS E36 ACCREDITATION & CERTIFICATION E57 3D IMAGING SYSTEMS E60 SUSTAINABILITY F01 ELECTRONICS F06 RESILIENT FLOOR COVERINGS F13 PEDESTRIAN/WALKWAY SAFETY AND FOOTWEAR F16 FASTENERS F17 PLASTIC PIPING SYSTEMS F33 DETENTION AND CORRECTIONAL FACILITIES F36 TECHNOLOGY AND UNDERGROUND UTILITIES G03 WEATHERING AND DURABILITY C14 GLASS AND GLASS PRODUCTS C21 CERAMIC WHITEWARES AND RELATED PRODUCTS D01 PAINT AND RELATED COATINGS, MATERIALS, AND APPLICATIONS D06 PAPER AND PAPER PRODUCTS D09 ELECTRICAL AND ELECTRONIC INSULATING MATERIALS D10 PACKAGING D11 RUBBER D12 SOAPS AND OTHER DETERGENTS D13 TEXTILES D14 ADHESIVES D15 ENGINE COOLANTS AND RELATED FLUIDS D20 PLASTICS D21 POLISHES D31 LEATHER E12 COLOR AND APPEARANCE E18 SENSORY EVALUATION E20 TEMPERATURE MEASUREMENT E35 PESTICIDES, ANTIMICROBIALS, AND ALTERNATIVE CONTROL AGENTS E41 LABORATORY APPARATUS E53 ASSET MANAGEMENT E57 3D IMAGING SYSTEMS F02 FLEXIBLE BARRIER PACKAGING F05 BUSINESS IMAGING PRODUCTS F06 RESILIENT FLOOR COVERINGS F08 SPORTS EQUIPMENT, PLAYING SURFACES, AND FACILITIES F09 TIRES F10 LIVESTOCK, MEAT, AND POULTRY EVALUATION SYSTEMS F11 VACUUM CLEANERS F13 PEDESTRIAN/WALKWAY SAFETY AND FOOTWEAR F14 FENCES F15 CONSUMER PRODUCTS F16 FASTENERS F24 AMUSEMENT RIDES AND DEVICES F26 FOOD SERVICE EQUIPMENT F27 SNOW SKIING F37 LIGHT SPORT AIRCRAFT F43 LANGUAGE SERVICES AND PRODUCTS F44 GENERAL AVIATION AIRCRAFT A01 STEEL, STAINLESS STEEL AND RELATED ALLOYS A04 IRON CASTINGS A05 METALLIC-COATED IRON AND STEEL PRODUCTS A06 MAGNETIC PROPERTIES B01 ELECTRICAL CONDUCTORS B02 NONFERROUS METALS AND ALLOYS B05 COPPER AND COPPER ALLOYS B07 LIGHT METALS AND ALLOYS B08 METALLIC AND INORGANIC COATINGS B09 METAL POWDERS AND METAL POWDER PRODUCTS B10 REACTIVE AND REFRACTORY METALS AND ALLOYS C03 CHEMICAL-RESISTANT NONMETALLIC MATERIALS C08 REFRACTORIES C28 ADVANCED CERAMICS D01 PAINT AND RELATED COATINGS, MATERIALS, AND APPLICATIONS D20 PLASTICS D30 COMPOSITE MATERIALS E01 ANALYTICAL CHEMISTRY FOR METALS, ORES, AND RELATED MATERIALS E04 METALLOGRAPHY E07 NONDESTRUCTIVE TESTING E08 FATIGUE AND FRACTURE E12 COLOR AND APPEARANCE E13 MOLECULAR SPECTROSCOPY AND SEPARATION SCIENCE E28 MECHANICAL TESTING E29 PARTICLE AND SPRAY CHARACTERIZATION E37 THERMAL MEASUREMENTS E42 SURFACE ANALYSIS F01 ELECTRONICS F34 ROLLING ELEMENT BEARINGS F40 DECLARABLE SUBSTANCES IN MATERIALS F42 ADDITIVE MANUFACTURING TECHNOLOGIES G01 CORROSION OF METALS G03 WEATHERING AND DURABILITY D08 ROOFING AND WATERPROOFING D18 SOIL AND ROCK D19 WATER D20 PLASTICS D22 AIR QUALITY D34 WASTE MANAGEMENT D35 GEOSYNTHETICS E06 PERFORMANCE OF BUILDINGS E44 SOLAR, GEOTHERMAL AND OTHER ALTERNATIVE ENERGY SOURCES E47 E48 BIOENERGY AND INDUSTRIAL CHEMICALS FROM BIOMASS E50 ENVIRONMENTAL ASSESSMENT, RISK MANAGEMENT AND CORRECTIVE ACTION E60 SUSTAINABILITY F20 HAZARDOUS SUBSTANCES AND OIL SPILL RESPONSE F40 DECLARABLE SUBSTANCES IN MATERIALS G02 WEAR AND EROSION C07 LIME AND LIMESTONE D14 ADHESIVES D16 AROMATIC HYDROCARBONS AND RELATED CHEMICALS D20 PLASTICS D26 HALOGENATED ORGANIC SOLVENTS AND FIRE EXTINGUISHING AGENTS D28 ACTIVATED CARBON D32 CATALYSTS E13 MOLECULAR SPECTROSCOPY AND SEPARATION SCIENCE E15 INDUSTRIAL AND SPECIALTY CHEMICALS E27 HAZARD POTENTIAL OF CHEMICALS E35 PESTICIDES, ANTIMICROBIALS, AND ALTERNATIVE CONTROL AGENTS F40 DECLARABLE SUBSTANCES IN MATERIALS
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Vinyl Siding Color and Appearance

Color and appearance are two of the leading qualities that a homeowner looks for when considering vinyl siding. A new ASTM standard will enable manufacturers of color plastic vinyl siding to enhance the color and appearance retention of their products.

ASTM D7856, Specification for Color and Appearance Retention of Solid and Variegated Color Plastic Siding Products Using CIELab Color Space, will be used by siding manufacturers, developers and suppliers of color systems and outdoor weathering laboratories. In addition, the new standard will be referenced by third-party color retention certificate programs.

ASTM D7856 is a successor to two ASTM specifications:

  • ASTM D6864, Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products; and
  • ASTM D7251, Specification for Color and Appearance Retention of Variegated Color Plastic Siding Products.

ASTM D7856 combines elements from both ASTM D6864 and ASTM D7251, and replaces use of the Hunter Lab color space for measurement of colors and evaluation of color change with the CIE 1976 L*a*b* color space, as specified by the International Commission on Illumination. The CIElab color space describes all the colors visible to the human eye.

According to ASTM member David Johnston, senior director, technical, Vinyl Siding Institute Inc., VSI had based the color retention requirements of its Product Certification Program on the standards that reference the Hunter Lab color space, which is no longer frequently used. D7856 was developed to reflect the more common use of CIELab Color Space in current testing procedures. Johnston notes that VSI is now in the process of converting its color retention requirements for siding certification to reference ASTM D7856.

“All building materials undergo changes when exposed to outdoor conditions from the effects of, among other things, solar radiation, temperature, moisture and atmospheric pollution,” says Philip Ledgerwood, ASTM member and research and development scientist, Americhem Inc. “For exterior plastic siding products, the chief concern has always been changes in color.”

Ledgerwood notes that the development of ASTM standards for color retention has been a major driver of technology to identify pigments and compounding technology that have improved siding color retention performance.

“ASTM D7856 enhances the ability to measure color change correlating to human perception and use two-year outdoor weathering to estimate long-term color retention performance,” says Ledgerwood. “It will also aid in applying acceptability criteria that reflect how people view color change on their houses. This will help manufacturers develop products that increase overall satisfaction and can take advantage of the darker and more chromatic colors that consumers want.”

ASTM D7856 was developed by Subcommittee D20.24 on Plastic Building Products, part of ASTM International Committee D20 on Plastics.

To purchase ASTM standards, visit www.astm.org and search by the standard designation, or contact ASTM Sales (phone: 877-909-ASTM; sales@astm.org).

CONTACT Technical Information: David Johnston, Vinyl Siding Institute • Washington, D.C. • Phone: 202-587-5102 | Subcommittee D20.24 Contact: Alan Kupfer, Axiall Corp. • Plaquemine, La. • Phone: 225-685-1257 | ASTM Staff: Alyson Fick • Phone: 610-832-9710 | Upcoming Meeting: Nov. 9-12, 2014 • November Committee Week • New Orleans, La.

This article appears in the issue of Standardization News.