ANSI/CRRC S100 (2016) Standard Test Methods For Determining Radiative .
ANSI/CRRC S100 (2016)Standard Test Methods for DeterminingRadiative Properties of Materials 2018 Cool Roof Rating Council, Inc. All Rights Reserved.Cool Roof Rating Council2435 N Lombard StreetPortland, OR 97217Phone (866) 465-2523CRRC Board Approved March 9, 2016ANSI Approved April 26, 2016
TABLE OF CONTENTSSECTION S.1 - GENERAL1S.1.1 SCOPES.1.2 SIGNIFICANCE AND USES.1.3 UNITSS.1.4 ADVISORY NOTESS.1.5 GLOSSARY OF TERMSS.1.6 REFERENCES111126SECTION S.2 - CONDUCT OF TESTS7S.2.1 PRODUCT SPECIMENSS.2.2 SOLAR REFLECTANCE TESTSS.2.3 THERMAL E MITTANCE TESTSS.2.4 COLOR FAMILY ELEMENTS- INSTRUMENTALLY MEASURED COLOR TESTSS.2.5 FLUID APPLIED ROOFING PRODUCTS-COATING THICKNESS TESTSS.2.6 REQUIREMENTS FOR FIELD EXPOSURE OF ROOFING PRODUCTSS.2.7 REQUIREMENTS FOR LABORATORY SOILING AND WEATHERING OF ROOFING MATERIALSS.2.8 REPORT OF RESULTSSECTION S.3 - TEST SPECIMEN SELECTION779999111213S.3.1 GENERALS.3.2 STANDARD PRODUCTION LINE ROOFING PRODUCT SPECIMENS.3.3 FACTORY COLORED PRODUCTSS.3.4 CUSTOM COLORSS.3.5 VARIEGATED PRODUCTS1313151717SECTION S.4 CRRC-1 TEST METHOD #120APPENDIX A – TILE METHOD TEMPLATE (FIGURE S.2.2 (D.2))21APPENDIX B – SOLAR REFLECTANCE MEASUREMENT CALCULATIONS (NON MANDATORY)22BIBLIOGRAPHY23Advisory note: all referenced documents such as Cool Roof Rating Council Agreements,Applications, Forms, Procedures or other items may be found at http://www.coolroofs.org.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20161
ANSI/CRRC S100Section S.1 - GeneralS.1.1 ScopeThis standard covers specimen preparation and test methods for determining the initial and agedradiative properties of roofing products.S.1.2 Significance and UseThis standard provides a practice and method for testing and reporting the radiative properties ofroofing products before and after a specified test exposure. The tests expose roofing specimensto specific tests, and to the exterior environment, throughout a specified time period. The test(s)provides a relative measure of the roofing product response to the test conditions. The standarddoes not purport to be representative of all conditions that roofing products experience in thefield. Variations of the test conditions or specimen construction also affect the specimenresponse.S.1.3 UnitsThe values are stated in SI units, which are regarded as the norm for this standard. All othervalues shall be shown in parenthesis and are provided for informational purposes only.S.1.4 Advisory NotesThe text of the standard contains references to advisory notes that are provided as explanatorymaterial. These advisory notes shall not be considered part of the standard.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20162
S.1.5 Glossary of TermsUnless otherwise expressly stated, the following words and terms shall have the meanings asindicated in this document.Accredited Independent Testing Laboratory (AITL) - A testing laboratory that is accreditedfor compliance with ISO/IEC Standard 17025 to test roofing products and is completelyindependent from any roofing product manufacturer or roofing product seller. Accredited shallbe defined as achieving third-party evaluation accreditation by an organization accredited to ISO17011.Accredited Manufacturer Testing Laboratory (AMTL) - A testing laboratory affiliated with aroofing product manufacturer or roofing product seller that is accredited to test the radiativeproperties of roofing products. Accredited shall be defined as achieving third-party evaluation bya nationally recognized organization, such as the Cool Roof Rating Council (CRRC), of thecompliance with testing requirements in this standard, competence of testing, and propercalibration of equipment.Batch - A single quantity of product processed at one time as a mixture or combination of rawmaterials.Coating Thickness – The dry film thickness of a coating when applied to a substrate, measuredin accordance with section S.2.5 of this standard.Color Family - A pre-defined range of absolute Hunter “L,” “a,” and “b” color values thatestablishes the color space for a pre-defined set (group) of colors.Color Family Additional Element - A color family element that is not the color familyrepresentative element.Color Family Binder/Resin Technology - General class of factory applied coatings used inmetal roofing products which are defined by the family of related binder/resin chemicals used toformulate such coatings.Color Family Element - A uniquely formulated roofing product that is a member of a colorfamily Group and that is either a factory-applied roof product component that serves as the topcoating on a factory coated metal roofing product or a metal roofing product that has as its topcoating a factory-applied roof product component.Color Family Group - One or more production line factory-applied metal coatings or factorycoated metal roofing products that are rated by roofing company and have the same binder/resintechnology, and that have color properties and radiative properties that fall within the rangesestablished for the respective color family.Color Family Representative Element - A color family element that is used to initiallyestablish a color family group.Compound Product Rating - A product rating for two or more models which share the samesurface formulation and same radiative properties.Cooling Degree Day (CDD) - For any one day, when the mean temperature is more than 100Cor 500F, there are as many degree-days as degrees Celsius or Fahrenheit temperature differencebetween the mean temperature for the day and 100C or 500F. Annual cooling degree-days(CDDs) are the sum or the degree-days over a calendar year. (Source: ASHRAE Standard 169)CRRC Board Approved March 9, 2016ANSI Approved April 26, 20163
Custom Color - A unique roofing product color developed for the owner of a specific buildingor group of buildings on the same site that is produced in limited quantities and for a limitedduration. A custom color is not individually promoted in general product information andmarketing materials.Emittance, Thermal - The ratio of the radiant heat flux emitted by a specimen to that emitted bya blackbody radiator at the same temperature.Estimate of Specimen Mean Standard Error - The specimen (rather than population) standarddeviation divided by the square root of the number of specimens.Factory-Applied Roof Product Component - A material or component made by an OtherManufacturer which is applied to a substrate in a factory or coating facility (i.e. not in the field).Heating Degree Day (HDD) - For any one day, when the mean temperature is less than 180C or650F, there are as many degree-days as degrees Celsius or Fahrenheit temperature differencebetween the mean temperature for the day and 180C or 650F. Annual heating degree-days(HDDs) are the sum of the degree-days over the calendar year. (Source: ASHRAE Standard 169)Heterogeneous - Consisting of dissimilar or diverse ingredients or constituents.Hunter “L,” ”a,” ”b” Color Values - A numeric measurement of a color’s lightness (L),redness/greenness (a) and yellowness/blueness (b).Laboratory Exposure of Roofing Products - A laboratory standard practice that replicates theeffects of three years of natural exposure, including soiling and weathering, on the solarreflectance and thermal emittance of roofing products.Low-Sloped Roofing Product – Roofing products designed for installation with a slope of 2:12or less.Other Manufacturer (OM) - A manufacturer that supplies a roofing product, component or rawmaterial to a Seller, either directly or indirectly. In the case of components or raw materialsprovided by the Other Manufacturer, they solely determine the radiative properties of the finalroofing product. Manufacturers that supply roofing products to others for private label sales arealso within the scope of this definition.Population - A group of specimen values about which conclusions are to be drawn, such as a setof solar reflectance values determined from non-overlapping spots (small regions) that cover anentire test surface.Population Mean - The arithmetic mean of the property values (e.g., solar reflectances)measured for all members of a population.Population Standard Deviation - The square root of the arithmetic mean of the squares of thedeviation from the population mean.Profiled Roofing Products - Roofing products that vary in rise over a given width as can beseen in a cross sectional view.Radiative Properties - The solar reflectance and thermal emittance of a roofing product.Radiative Properties, Aged - The radiative properties of a roofing product tested aftercompleting field exposure, or tested after laboratory exposure if the product has begun, but notyet completed, field exposure.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20164
Radiative Properties, Field Exposed - The solar reflectance and thermal emittance of a roofingproduct after three years of exposure to the weather at a test farm.Radiative Properties, Initial - The solar reflectance and thermal emittance of a roofing productdetermined from a specimen which is prepared or collected for the specific purpose of testing theinitial radiative properties.Radiative Properties, Laboratory Exposed - The solar reflectance and thermal emittance of aroofing product following application of the practice for laboratory soiling and weathering ofroofing products.Radiative Properties, Rated - The solar reflectance and thermal emittance of a roofing product,which is reported by an independent entity. Radiative Properties, Tested - The reported solarreflectance and thermal emittance of a roofing product as determined by an AccreditedIndependent Testing Laboratory.Reflectance, Solar - The ratio of the reflected solar flux to the incident solar flux.Reflectometer - A device that measures reflectance.Relative Humidity (RH) - The ratio of the partial pressure or density of water vapor to thesaturation pressure or density, respectively, at the same dry-bulb temperature, and barometricpressure of the ambient air. (Source: ASHRAE Terminology of Heating, Ventilation, AirConditioning, & Refrigeration)Roofing Product, Fluid Field-Applied - A roofing product that is applied as a fluid in the fieldto a roofing substrate in order to improve the solar reflectance and/or thermal emittance, amongother things.Roofing Product, Production Line - A roofing product material that is not a custom color.production line roofing products are standard color offerings by the manufacturer and arepromoted in general product information and in marketing materials.Roofing Products, Standard - Production line roofing products, excluding color familyproducts.Roofing Product, Variegated - A material with a varied surface color or which has discretemarkings of different colors.Specimen Mean - The arithmetic mean of the property values (e.g., solar reflectances) measuredfor all members of a specimen set.Specimen Mean Standard Error - The population standard deviation divided by the squareroot of the number of specimens.Specimen Set - A subset of the population, such as a set of non-overlapping spots (i.e. smallregions) on a test surface.Specimen Standard Deviation - The square root of the ratio of the sum of the squares of thedeviation from the specimen mean to a number one less than the number of specimens.Seller - A roofing product seller, limited to business entities that package, label and bring theroofing product to market.Spot - A small region of a test surface, such as a 2.54 cm by 2.54 cm (1 inch by 1 inch) square ora 2.45 cm (1 inch) diameter circle, whose solar reflectance can be measured.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20165
Steep-Sloped Roofing Product - Roof products designed to be installed with a slope of greaterthan 2:12.Test Farm Site - One of three locations where a product is placed for weathering exposurebefore the measurement of aged ratings.Test Surface - A flat, opaque, and heterogeneous surface, such as that of a variegated, granulecovered asphalt shingle.Test Surface Mean Solar Reflectance - The ratio of solar energy reflected from a test surface tothe solar energy incident on a test surface, equal to the ratio of area-integrated solar reflectanceto area.Uncharacteristically Damaged - A specimen that is unusable after weathering exposurethrough no fault of sample preparation by the Seller or Other Manufacturer. Unusable refers tothe inability to accurately measure the aged radiative properties of the product sample.Uncharacteristically damaged shall include, but not be limited to, the following: damage duringtransit of the product by improper handling; animal excrement that stained the sample;irreparable damage or destruction due to a natural disaster, such as a hurricane, tornado,flooding, or other disaster; or any other unforeseen event that might harm the sample beyondnormal weather exposure.Variegated - Having discrete markings of different colors.Wood Roofing Products – Roofing products manufactured from various trees, including but notlimited to western red cedar, cypress, pine and redwood.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20166
S.1.6 ReferencesASHRAEAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers1791 Tullie Circle, NEAtlanta, GA 30329-2305www.ashrae.orgANSI/ASHRAE Standard 169-2013– Climatic Data for Building Design Standards.ASHRAE Terminology of Heating, Ventilation, Air Conditioning, & Refrigeration, 1991.ASTMASTM International100 Barr Harbor DriveWest Comshohocken, PA 19428-2959www.astm.orgASTM C1549-09, Standard Test Method for Determination of Solar Reflectance Near AmbientTemperature Using a Portable Solar Reflectometer.ASTM C1371-04a, Standard Test Method for Determination of Emittance of Materials NearRoom Temperature using Portable Emissometers.ASTM D751-06 (2011), Standard Test Methods for Coated Fabrics.ASTM D1005-95 (2013), Standard Test Method for Measurement of Dry-Film Thickness ofOrganic Coatings Using Micrometers.ASTM D1669-07 (2013), Standard Practice for Preparation of Test Panels for Accelerated andOutdoor Weathering of Bituminous Coatings.ASTM D2244-14, Standard Practice for Calculation of Color Tolerances and Color Differencesfrom Instrumentally Measured Color and Coordinates.ASTM D7091-05 (2013), Standard Practice for Nondestructive Measurement of Dry FilmThickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic,Nonconductive Coatings Applied to Non-Ferrous Metals.ASTM D7897-15, Standard Practice for Laboratory Soiling and Weathering of RoofingMaterials to Simulate Effects of Natural Exposure on Solar Reflectance and Thermal Emittance.ASTM E772-05, Standard Terminology Relating to Solar Energy Conversion.ASTM E891-87(1992), Tables for Terrestrial Direct Normal Solar Spectral Irradiance Tables forAir Mass 1.5. Note: Currently a withdrawn standard.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20167
ASTM E903-12, Standard Test Method for Solar Absorptance, Reflectance, and Transmittanceof Materials Using Integrating Spheres.ASTM E1918-06, Standard Test Method for Measuring Solar Reflectance of Horizontal andLow-Sloped Surfaces in the Field.ASTM E1980-11, Standard Practice for Calculating Solar Reflectance Index (SRI) of Horizontaland Low-Sloped Opaque Surfaces.ASTM G7-13, Standard Practice for Atmospheric Environmental Exposure Testing ofNonmetallic Materials.ASTM G147-09, Standard Practice for Conditioning and Handling of Nonmetallic Materials forNatural and Artificial Weathering Tests.ISOThe International Organization for Standardization1, ch. de la Voie-Creuse, Case Postale 56CH-1211 Geneva 20, Switzerlandwww.iso.orgISO/IEC Standard 17025-2005, General requirements for the competence of testing andcalibration laboratories.ISO/IEC Standard 17011-2004, Conformity assessment -- General requirements for accreditationbodies accrediting conformity assessment bodies.NOAANational Oceanic and Atmospheric Administration1401 Constitution Avenue, NWRoom 5128Washington, DC 20230www.noaa.govNOAA, Comparative Climatic Data – Average Relative Humidity.CRRC Board Approved March 9, 2016ANSI Approved April 26, 20168
Section S.2 - Conduct of TestsS.2.1 Product SpecimensAll candidate specimens used for the purposes of testing initial radiative properties and agedradiative properties shall be chosen by the Seller or Other Manufacturer (OM). The Seller orOM shall be responsible for identifying each separate roofing product, material or component.Testing shall be in accordance with this section.Accredited Independent Testing Laboratories (AITL) shall measure the dimensions of each testspecimen. Specimen measurements shall be within 2.54 cm (1 inch) of the minimum requiredspecimen size, and specimens shall be measured to an accuracy of 0.64 centimeters (0.25inches).AITLs shall note if specimens meet size requirements on the Initial Test Results Report (F-2). Ifthe specimen does not meet size requirements, the AITL will notify the licensee and obtain anew sample.S.2.2 Solar Reflectance Tests(A) Solar reflectance tests shall be conducted based upon one of the following test methods,unless the roof product is listed in section S.2.2 (B) or S.2.2 (C).1.ASTM E903 in conjunction with E891, analyzed using factors appropriate foran air mass value of 1.52.ASTM E19183.ASTM C1549, using an air mass value of 1.54.CRRC-1 Test Method #1, using an air mass value of 1.5a. Tile Test Methodb.Tile Template Methodc. Wood MethodAdvisory note: The test procedure for CRRC-1 Test Method #1 is contained inSection S.4.(B) Variegated Roofing Products. Test specimens of variegated roofing products shall betested for solar reflectance in accordance with ASTM E1918 or CRRC-1 Test Method#1.(C) Presumed Non-Variegated Modified Bitumen Capsheets. Modified bitumen capsheetswith non-continuous (particle) top coatings that are represented as non-variegatedproducts shall be tested in accordance with the following requirements:1. When test method E1918 is used to conduct initial testing no confirmation ofnon-variegated status is required.2. When test method E903 or C1549 is used to conduct initial testing, the AITLshall first test the specimen as described below to confirm that the specimen isnot a variegated roofing product, as follows:CRRC Board Approved March 9, 2016ANSI Approved April 26, 20169
a. The AITL shall take a series of five (5) solar reflectancemeasurements approximately equidistant along a diagonal axis of thespecimen. When any of the five solar reflectance measurements variesby more than 0.05 from the arithmetic average of all fivemeasurements, then the product will be deemed to be a variegatedproduct. The AITL shall reject these specimens and new specimensshall be submitted under the terms of Section S.2.2.B.(D) Tile Products. Tile products shall be tested in accordance with Part D1 or D2 below. TheAITL performing the measurements shall mark the arrangement of the tiles and recordthe locations of the measurements in the report developed in accordance with SectionS.2.7. When specimens are tested for both initial and aged results, the measurementlocations shall be the same for both tests.1. CRRC-1 Test Method 1. Tests shall be conducted in accordance with CRRC-1Test Method 1, and the following requirements:a. Six measurements shall be taken randomly chosen and non-repeatedtest cells on each of nine tiles selected. A test cell is an element of agrid of contiguous one inch by one inch squares projected on thesurface of each tile. The aperture of the measure device shall becentered within the cell.b. Following the measurements of all specimens, compute the estimate ofspecimen mean standard error of the measurements.c. If the estimate of specimen mean standard error is 0.02 or less the testis complete, and the measured property is permitted to be reported.d. If the estimate of specimen mean standard error is greater than 0.02the test is incomplete, and an additional test shall be performed at aseventh location on each tile.e. Following the seventh test on each tile, compute the estimate ofspecimen mean standard error. If the estimate of specimen meanstandard error is 0.02 or less the test is complete, and the measuredproperty is permitted to be reported. If the estimate of specimen meanstandard error is greater than 0.02 then repeat D.1.d specimen testingat an additional randomly selected and non-repeated location on eachtile until either:i.the estimate of specimen mean standard error is 0.02 or less isachieved, orii. every test cell on every tile has been measured.If either condition (a) or (b) has been satisfied, the test is complete and both thespecimen mean and the specimen mean standard error shall be reported. Ifcondition (b) has been satisfied it shall be reported that all test cells have beenmeasured.CRRC Board Approved March 9, 2016ANSI Approved April 26, 201610
2. Template Method. The measurements shall be taken in the locations indicated bythe template, in accordance with Figure S.2.2 (D.2.) in Appendix A. Position thetemplate to include the maximum color variegation on the specimens.a. The measurements shall be taken on each of nine tiles selected.b. Following the measurements of all specimens, compute the estimate ofspecimen mean standard error of the measurements.c. If the estimate of specimen mean standard error is 0.02 or less the testis complete, and the measured property is permitted to be reported.d. If the estimate of specimen mean standard error is greater than 0.02the test is incomplete and the specimens will be tested in accordancewith Section S.2.2 Part D.1 (CRRC-1 Test Method 1) above.S.2.3 Thermal Emittance TestsThermal emittance tests shall be conducted in accordance with ASTM C1371. Threemeasurements will be taken on each sample. Any product not on an un-insulated metal substrateshall be tested using the Slide Method. In the Slide Method, the emissometer head should bemoved, without creating a gap between the sample and the emissometer, every 15 seconds duringthe testing procedure.S.2.4 Color Family Elements- Instrumentally Measured Color TestsFor color family elements, only, color family element product specimens shall be tested forabsolute Hunter “L”, “a”, and “b” values in accordance with ASTM D2244, Appendixes X1.1.Color Measurement Equipment Specification: 0 /45 Geometry with 10 observer, D65illuminant.S.2.5 Fluid Applied Roofing Products-Coating Thickness Tests(A) Fluid applied roofing products coating thickness tests shall be conducted based uponASTM D1669, ASTM D1005 or D7091.(B) A thickness measurement shall be taken at five evenly spaced points on each of the nineproduct specimens. The average of the five measurements shall be used to determine thethickness of the coating on each specimen. The average thickness of the measuredcoating for a given specimen shall be within 20% of the manufacturer’s recommendedminimum thickness. A specimen which is not within this range shall not be used forratings.S.2.6 Requirements for Field Exposure of Roofing ProductsThe following criteria shall be met to determine aged ratings:(A) Test Farm Qualifications: A weathering farm shall be accredited for compliance withISO/IEC Standard 17025 to weather and test roofing products, and shall be independentfrom any roofing product manufacturer or roofing product seller.(B) Test Farm Locations: Roofing product specimens shall be exposed in the following threelocations representing three climate zones:1. Hot/Humid climate with:CRRC Board Approved March 9, 2016ANSI Approved April 26, 201611
a. Annual Heating Degree-Day (HDD) @ 18 C of 72 (Annual HDD @65 F of 130), andb. Annual Cooling Degree-Day (CDD) @ 10 C of 5,447 (Annual CDD@ 50 F of 9,805), andc. An average yearly relative humidity of 83% in the A.M. and 61% inthe P.M.2. Cold/ Temperate climate with:a. Annual Heating Degree-Day (HDD) @ 18 C of 3,280 (Annual HDD@ 65 F of 5,904), andb. Annual Cooling Degree-Day (CDD) @ 10 C of,1,662 (Annual CDD@ 50 F of 2,992), andc. An average yearly relative humidity of 80% in the A.M. and 62% inthe P.M.3.Hot/Dry climate with:a. Annual Heating Degree-Day (HDD) @ 18 C of 523 (Annual HDD @65 F of 941), andb. Annual Cooling Degree-Day (CDD) @ 10 C of 5,067 (Annual CDD@ 50 F of 9,120), andc. An average yearly relative humidity of 50% in the A.M. and 23% inthe P.M.The heating degree-day and cooling degree-day shall be determined in accordance withANSI/ASHRAE Standard 169-The average yearly relative humidity shall be determinedin accordance with NOAA comparative climate data. Test farm location climate valuesshall be within plus or minus ten-percent (10%) of those values shown above.Advisory note: Examples of regions of the United States that comply with S.2.6 are, butare not limited to, the following:Hot/Humid climate: Miami, Florida.Cold/Dry climate: Chicago, Illinois; Cleveland, Ohio; Youngstown, Ohio; Pittsburgh,Pennsylvania.Hot/Dry climate: Phoenix, AZ.(C) Specimen Exposure Period: Specimens of each product shall be exposed for a minimumof three continuous years in accordance with specimen preparations in Section S.3.Specimens shall remain untouched for that minimum period, except for removal andreinstallation within the test farm as result of weather conditions that have the potentialfor damaging the test specimens. Said removal and reinstallation shall be in accordancewith the policy and procedures of the test farm responsible for the safekeeping of thespecimens.(D) Specimen Mounting: Exposure for both metallic and nonmetallic materials shall be inaccordance with ASTM G7. Specimens shall be mounted for exposure on plywood inCRRC Board Approved March 9, 2016ANSI Approved April 26, 201612
such a way that there is no run off from one panel to another. Steep-sloped roofingproducts are to be exposed at minimum recommended slope; low-sloped roofing productsat low-slope, and products designated as both low- and steep-sloped are to be exposed atlow-slope only.(E) Exposure Removal: After three-year exposure, the specimens are permitted to beremoved for purposes of testing and reporting aged solar reflectance and thermalemittance results.1. To ensure the proper handling of samples, AITLs and test farms shall adhereto the procedures in ASTM G147, except sections 14.3 through 14.4involving the washing of samples. The test surface of each sample shall not bewashed, cleaned, or wiped in any fashion. Loose dirt, embedded dirt,environmental stains, mold, mildew and any other material that rests on—orhas become incorporated into—the surface of the material shall not be altered.(F) Testing of Exposed Specimens: The specimens shall be tested in accordance with SectionS.2.(G) Exposure Notification: The test farm shall be responsible for notifying the Seller or OMof exposure start and end dates and any other pertinent information about specimendamage or unusual appearance. The test farm is also responsible for accurately labelingexposed specimens to match with exposure location.S.2.7 Requirements for Laboratory Soiling and Weathering of Roofing MaterialsThe following criteria shall be used to determine laboratory-exposed radiative properties:1. Specimen qualifications:a. Each product specimen shall comply with the requirements of ASTMD7897.b. The exposed area of each specimen shall be 10 centimeters by 10centimeters (4 inches by 4 inches).2. Specimen quantity: Three specimens of each roofing product randomlyselected from the routine production for purposes of testing.3. Laboratory soiling and weathering: The laboratory soiling and weathering shallbe conducted in accordance with ASTM D7897, using the soiling mixture foraverage U.S. conditions in accordance with Section 6.1 of the ASTM D7897.4. Reporting: The report for laboratory soiling and weathering of roofingmaterials shall include:(A) Information as required by Section 10 of ASTM D7897.(B) The spraying time τ, and distance from spraying nozzle to specimen, established inaccordance with Section 8 of ASTM D7897.(C) The solar reflectance and thermal emittance of each specimen measured in accordancewith Section S.2, before and after laboratory soiling and weathering.1. The laboratory-exposed solar reflectance value and laboratory-exposed thermalemittance value of the product shall be determined by calculating the arithmeticCRRC Board Approved March 9, 2016ANSI Approved April 26, 201613
means of the corresponding values of the three specimens measured afterlaboratory soiling and weathering.S.2.8 Report of ResultsAITLs shall submit a report of tested radiative properties, both initial and aged, to the Seller orOM for use in compiling a product rating application.The AITL shall report as tested aged radiative properties the field-exposed radiative propertiesof any product that has completed field exposure in accordance with Section S.2.6.If a product has begun, but not yet completed, field exposure in accordance with Section S.2.6,the AITL shall report as tested aged radiative properties the laboratory-exposed radiativeproperties obtained in accordance with Section S.2.7, or report that aged radiative propertieshave not been tested.The AITL shall note in its report whether the tested aged radiative properties are field-exposedradiative properties or are laboratory-exposed radiative properties.For custom colors only, AMTL shall submit a report of tested radiative properties, initial only,to the Seller or OM for use in compiling a product rating application.The report shall contain information as required by the appropriate test method, and shall includethe following information:(A) Name and address of the manufacturer.(B) Name and identification of roofing product.(C) Name and address of the testing agency, and name of person in responsible charge of test.(D) Test method(s) employed.(E) Thickness of top coating or material tested, if applicable.(F) Summary of data.CRRC Board Approved March 9, 2016ANSI Approved April 26, 201614
reflectance and thermal emittance of a roofing product as determined by an Accredited Independent Testing Laboratory. Reflectance, Solar - The ratio of the reflected solar flux to the incident solar flux. Reflectometer - A device that measures reflectance. Relative Humidity (RH) - The ratio of the partial pressure or density of water vapor to the
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