ENERGY STAR
ENERGY STAR Program Requirements
for Roof Products
Partner Commitments
Following are the terms of the ENERGY STAR Partnership Agreement as it pertains to the manufacture
and labeling of ENERGY STAR qualified products. The ENERGY STAR Partner must adhere to the
following partner commitments:
Qualifying Products	
1.	Comply with current ENERGY STAR Eligibility Criteria, which define performance requirements and
test procedures for roof products. A list of eligible products and their corresponding Eligibility Criteria
can be found at www.enerqvstar.gov/specifications.
2.	Obtain certification of ENERGY STAR qualification from a Certification Body recognized by EPA for
roof products prior to associating the ENERGY STAR name or mark with any product. As part of this
certification process, products must be tested in a laboratory recognized by EPA to perform roof
product testing.
Using the ENERGY STAR Name and Marks	
3.	Comply with current ENERGY STAR Identity Guidelines, which define how the ENERGY STAR name
and marks may be used. Partner is responsible for adhering to these guidelines and ensuring that its
authorized representatives, such as advertising agencies, dealers, and distributors, are also in
compliance. The ENERGY STAR Identity Guidelines are available at www.eneravstar.aov/loaouse.
4.	Use the ENERGY STAR name and marks only in association with qualified products. Partner may not
refer to itself as an ENERGY STAR Partner unless at least one product is qualified and offered for
sale.
5.	Provide clear and consistent labeling of ENERGY STAR qualified roof products.
5.1.	The ENERGY STAR mark must be clearly displayed in product literature (i.e., user manuals,
spec sheets, etc.) and on the manufacturer's Internet site where information about ENERGY
STAR qualified models is displayed.
5.2.	It is also recommended that the mark appear on the product packaging.
Verifying Ongoing Product Qualification	
6.	Participate in third-party verification testing through a Certification Body recognized by EPA for roof
products.
7.	Comply with tests that EPA/DOE may conduct at its discretion on products that are referred to as
ENERGY STAR qualified. These products may be obtained on the open market, or voluntarily
supplied by Partner at the government's request.
Providing Information to EPA	
8. Provide unit shipment data or other market indicators to EPA annually to assist with creation of
ENERGY STAR market penetration estimates, as follows:
8.1. Partner must submit the total number of ENERGY STAR qualified roof products shipped in the
calendar year or an equivalent measurement as agreed to in advance by EPA and Partner.
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Partner shall exclude shipments to organizations that rebrand and resell the shipments
(unaffiliated private labelers).
8.2.	Partner must provide unit shipment data segmented by meaningful product characteristics (e.g.,
type, capacity, presence of additional functions) as prescribed by EPA.
8.3.	Partner must submit unit shipment data for each calendar year to EPA or an EPA-authorized third
party, preferably in electronic format, no later than March 1 of the following year.
Submitted unit shipment data will be used by EPA only for program evaluation purposes and will be
closely controlled. Any information used will be masked by EPA so as to protect the confidentiality of
the Partner;
9.	Report to EPA any attempts by laboratories or Certification Bodies (CBs) to influence testing or
certification results or to engage in discriminatory practices.
10.	Notify EPA of a change in the designated responsible party or contacts within 30 days using the My
ENERGY STAR Account tool (MESA) available at www.eneravstar.gov/mesa.
Training and Consumer Education	
11. Partner shall comply with the following, product-specific requirements concerning training and
education:
11.1.	Through product literature, provide the following information to end users:
¦	A description of the variables that influence the amount of energy savings that can be
realized when an ENERGY STAR qualified roof product is installed on a home or building,
¦	An acknowledgement that the solar reflectance of any roof products over time may
increase or decrease, depending on the product make-up, due to aging and dirt and
microbial accumulation, and
¦	A description of the proper maintenance procedures required to maximize solar
reflectance over the longest period of time possible (e.g., rinsing or power washing each
spring or recoating every five years).
11.2.	Partner may continue to use the following statement to meet the above requirement: "When
installed properly, this product will help reduce energy costs. Actual savings will vary based on
geographic location and individual building characteristics. Consult your product manufacturer,
roofing contractor, or call 1-888-STAR-YES (1-888-782-7937) for more information." This
statement must be placed in close proximity to the ENERGY STAR mark wherever it is
included in product literature and on the manufacturer's Internet site.
Performance for Special Distinction	
In order to receive additional recognition and/or support from EPA for its efforts within the Partnership, the
ENERGY STAR Partner may consider the following voluntary measures, and should keep EPA informed
on the progress of these efforts:
¦	Provide quarterly, written updates to EPA as to the efforts undertaken by Partner to increase
availability of ENERGY STAR qualified products, and to promote awareness of ENERGY STAR and
its message.
¦	Consider energy efficiency improvements in company facilities and pursue benchmarking buildings
through the ENERGY STAR Buildings program.
¦	Purchase ENERGY STAR qualified products. Revise the company purchasing or procurement
specifications to include ENERGY STAR. Provide procurement officials' contact information to EPA for
periodic updates and coordination. Circulate general ENERGY STAR qualified product information to
employees for use when purchasing products for their homes.
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Feature the ENERGY STAR mark(s) on Partner website and other promotional materials. If
information concerning ENERGY STAR is provided on the Partner website as specified by the
ENERGY STAR Web Linking Policy (available in the Partner Resources section of the ENERGY
STAR website), EPA may provide links where appropriate to the Partner website.
Ensure the power management feature is enabled on all ENERGY STAR qualified displays and
computers in use in company facilities, particularly upon installation and after service is performed.
Provide general information about the ENERGY STAR program to employees whose jobs are relevant
to the development, marketing, sales, and service of current ENERGY STAR qualified products.
Provide a simple plan to EPA outlining specific measures Partner plans to undertake beyond the
program requirements listed above. By doing so, EPA may be able to coordinate, communicate,
and/or promote Partner's activities, provide an EPA representative, or include news about the event in
the ENERGY STAR newsletter, on the ENERGY STAR website, etc. The plan may be as simple as
providing a list of planned activities or milestones of which Partner would like EPA to be aware. For
example, activities may include: (1) increasing the availability of ENERGY STAR qualified products by
converting the entire product line within two years to meet ENERGY STAR guidelines; (2)
demonstrating the economic and environmental benefits of energy efficiency through special in-store
displays twice a year; (3) providing information to users (via the website and user's manual) about
energy-saving features and operating characteristics of ENERGY STAR qualified products; and (4)
building awareness of the ENERGY STAR Partnership and brand identity by collaborating with EPA
on one print advertorial and one live press event.
Join EPA's SmartWay Transport Partnership to improve the environmental performance of the
company's shipping operations. The SmartWay Transport Partnership works with freight carriers,
shippers, and other stakeholders in the goods movement industry to reduce fuel consumption,
greenhouse gases, and air pollution. For more information on SmartWay, visit
www.epa.gov/smartwav.
Join EPA's Climate Leaders Partnership to inventory and reduce greenhouse gas emissions. Through
participation, companies create a credible record of their accomplishments and receive EPA
recognition as corporate environmental leaders. For more information on Climate Leaders, visit
www.epa.gov/climateleaders.
Join EPA's Green Power Partnership. EPA's Green Power Partnership encourages organizations to
buy green power as a way to reduce the environmental impacts associated with traditional fossil fuel-
based electricity use. The partnership includes a diverse set of organizations including Fortune 500
companies, small and medium businesses, government institutions as well as a growing number of
colleges and universities. For more information on Green Power, visit www.epa.gov/greenpower.
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ENl-Rl-JY STAR
PARTNER
ENERGY STAR® Program Requirements
Product Specification for Roof Products
Eligibility Criteria
DRAFT: Version 2.2
Following is the ENERGY STAR Version 2.2 product specification for roof products. A product shall meet
all of the identified criteria if it is to earn the ENERGY STAR.
1. Definitions
1.1	General
A.	Roof surface: The uppermost part of the roof system that is in direct contact with solar radiation.
B.	Low-Slope Roofs: Surfaces with a slope of 2:12 or less.1
C.	Steep-Slope Roofs: Surfaces with a slope greater than 2:12.
D.	Low-Slope Roof Products: Products that are typically installed on low-slope surfaces such as
single-ply membranes, built-up-roofs (BUR), modified bitumen, spray polyurethane foam, roof
coatings, metal panels, and standing-seam profiled metal. Some products that are typically
installed on low-slope roofs may also be installed on steep-slope roofs (e.g., single-ply
membranes and roof coatings). For the purposes of this specification, the roof product will
constitute the roof surface.
E.	Steep-Slope Roof Products: Products that are typically installed on steep-slope surfaces such as
composite shingles, clay, concrete, or fiber-cement tile, slate, metal panels, and metal shingles.
Some products that are typically installed on low-slope roofs may also be installed on steep-slope
roofs (e.g., single-ply membranes and roof coatings). For the purposes of this specification, the
roof product will constitute the roof surface.
1.2	Roof Products
F.	Built-Up-Roof (BUR): Traditional hot asphalt or coal tar built-up roofing membrane assembly
consists of alternating layers of felts, fabrics, or mats saturated with bitumen during manufacture,
assembled in place, and adhered with applied layers of hot bitumen. Surfacing for the hot BUR
can be aggregate embedded in hot asphalt; mineral-surface cap sheets; modified bitumen cap
sheets; or smooth-surface applications or coatings.2
G.	Asphalt Shingle: Composed of a base material, either organic felt or glass fiber mat; asphalt; and
surfacing material, generally in the form of mineral granules.3
H.	Metal Roof Component: Metal roof product designed to resemble a traditional steep-slope
residential product such as shingle, tile, shake, or slate.
I.	Metal Roof Panel: Roofing systems using metal panels are divided into two categories:
1	As defined in proposed ASTM Standard E 1918-97.
2	National Roofing Contractors Association Commercial Low-Slope Roofing Materials Guide 1998.
3	Ibid.
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architectural and structural. Architectural metal roofs are applied over a substrate while structural
metal roofs span between structural supports without the need for a substrate to carry the applied
loads. Standing seam roofs can be used on roofs with slopes as low as %:12. Steel and
aluminum sheets are commonly used to fabricate metal roof panels. Steel requires a corrosion
resistant metal coating such as zinc, aluminum, alloys of zinc-aluminum, or tin. Metallic coated
steel includes galvanized steel, aluminized steel, zinc-aluminum-coated steel and terne-coated
steel. Metallic coated steels may also be painted to provide additional corrosion protection, as well
as color.
J. Modified Bitumen: Roll roofing products consisting of asphalt, reinforcing layers, and in some
cases, surfacing. During manufacture, a polymer (APP, or atactic polypropylene, and SBS, or
styrene butadiene styrene, are the most common) is added to the bitumen while heating, which
"modifies," or changes, its properties.4
K. Roof Coating: A material typically applied in the liquid state to the roof surface at the time of
construction or at a later time as a retrofit measure. Roof coatings may include be bituminous,
polymeric, polymer modified, epoxy based, or other formulations. Bituminous roof coatings are
formulated using bitumen. Polymeric roof coatings are formulated using a variety of synthetic
resins such as acrylic, neoprene, styrene butadiene, urethane, polyvinyl acetate, and others.
Polymer modified roof coatings are manufactured by combining a portion of the polymeric
technology with bitumen technology.
L. Roof Tile: May be composed of clay, concrete, fiber-cement, or synthetic materials. A variety of
tile profiles, styles, finishes, and colors are available.
M. Single-Ply Membrane: A term applied to a sheet membrane which is a membrane fabricated in a
controlled factory environment. It is waterproof and weather resistant. It may be a laminate of
one or more materials and may or may not contain reinforcing fabrics.5
N. Spray Polvurethane Foam Roof System: A fully adhered system that consists of a rigid closed-cell
sprayed-in-place polyurethane foam insulation and a protective roof coating. Typical coatings
include acrylic, silicone, or urethane elastomers.
O. Variegated Roof Products: A material with a varied surface color, requiring a larger sample for
measurement of Solar Reflectance.6
P. Factory-Applied Roof Product Component: A material or component made by a licensed Original
Manufacturer (OM) which is applied to a substrate in a factory or coating facility (i.e. not in the
field).
1.3 Roof Product Performance
Q. Solar Flux: The direct and diffuse radiation from the sun received at ground level over the solar
spectrum expressed in watts per square meter.
R. Solar Reflectance: The fraction of solar flux reflected by a surface expressed as a percent or
within the range of 0.00 and 1.00.
S. Solar Spectrum: Radiation originating from the sun, including ultraviolet, visible, and near-infrared
radiation. Approximately 99 percent of solar energy lies between wavelengths of 0.3 to 3.5
micrometers (Fm).
T. Thermal Emittance: The ratio of the radiant heat flux emitted by a sample to that emitted by a
blackbody radiator at the same temperature (Total Thermal Emittance).7
4	National Roofing Contractors Association Commercial Low-Slope Roofing Materials Guide 1998.
5	As found in Single Ply Roofing Industry's Publication, Flexible Membrane Roofing: Professional's Guide to
Specifications. 2003.
As defined in Cool Roof Rating Council, Product Rating Program. CRRC-1, January 8, 2008.
7 Ibid.
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1.4 Color Families
U. Color Family Binder/Resin Technology: General class of factory-applied coatings used in metal
roofing products which are defined by the family of related binder/resin chemicals used to
formulate such coatings.
V. Hunter "L." "a." "b" Color Values: A numeric measurement of a color's lightness (L),
redness/greenness (a) and yellowness/blueness (b).
W. Color Family: A CRRC pre-defined range of Hunter "L", "a", and "b" color values that establishes
the color space for a CRRC predefined set of eighteen colors.
X. Color Family Group: One or more production line of factory coated metal roofing products that
have the same binder/resin technology, color properties, solar reflectance, and thermal emittance
values that fall within the ranges established for the respective CRRC Color Family.
Y. Color Family Element: A uniquely formulated roofing product that is a member of a Color Family
Group and is either: (1) a factory-applied roof product component that serves as the top coating
on a factory coated metal roofing product or (2) a metal roofing product that has a factory-applied
roof product component as its top coating.
Z. Color Family Representative Element: A Color Family Element that is used to initially establish a
Color Family Group.
AA. Color Family Additional Element: A Color Family Element that is not the Color Family
Representative Element.8
2.	Scope
2.1.	Included Products: Products that meet the definition of a Roofing Product as specified herein are
eligible for ENERGY STAR qualification, with the exception of products listed in Section 2.B. To
qualify for ENERGY STAR, roof products shall be:
a)	Tested through the Cool Roof Rating Council (CRRC) Product Rating Program, or9
b)	Evaluated using the test methods referenced in Table 3 in Section 4, below.
2.2.	Excluded Products: Any product types not specifically defined in Section 2.A are not eligible for
ENERGY STAR.
3.	Qualification Criteria
3.1 Significant Digits and Rounding
3.1.1.	All calculations shall be carried out with actual measured or observed values. Only the final result
of a calculation shall be rounded. Calculated results shall be rounded to the nearest significant
digit as expressed in the corresponding specification limit.
3.1.2.	Unless otherwise specified, compliance with specification limits shall be evaluated using exact
values without any benefit from rounding.
8	As defined in Cool Roof Rating Council, Product Rating Program, CRRC-1, January 8, 2008
9	Information on the Cool Roof Rating Council Product Rating Program can be found at vwwv.coolroofs.org
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3.2 Solar Reflectance and Reliability
3.2.1 The average of all solar reflectance values obtained during testing, shall be used to meet the limits
provided in Table 1 (low-slope) or Table 2 (steep-slope), below.
3.2.2 Roof products that may be applied to either low-slope or steep-slope roofs, such as roof coatings
and single-ply membranes, shall meet the Table 1 requirements, below.
Table 1 - Specifications for Low-Slope Roof Products
Characteristic
Performance Specification
Solar Reflectance
Initial Solar Reflectance
Greater than or equal to 0.65.
Maintenance of Solar Reflectance
Greater than or equal to 0.50 three years after installation under
normal conditions.
Reliability
Manufacturer warranty for defects
in materials and manufacturing
Each company's warranty for ENERGY STAR qualified roof products
shall be equal in all material respects to the product warranty offered
by the same company for comparable non-ENERGY STAR qualified
roof products. A company that sells only ENERGY STAR qualified
roof products shall offer a warranty that is equal in all material
respects to the standard industry warranty for comparable non-
ENERGY STAR qualified roof products.
Table 2 - S
pecifications for Steep-Slope Roof Products
Characteristic
Performance Specification
Energy Efficiency Levels
Initial Solar Reflectance
Greater than or equal to 0.25.
Maintenance of Solar Reflectance
Greater than or equal to 0.15 three years after installation under
normal conditions.
Reliability
Manufacturer warranty for defects
in materials and manufacturing
Each company's warranty for ENERGY STAR qualified roof products
shall be equal in all material respects to the product warranty offered
by the same company for comparable non-ENERGY STAR qualified
roof membrane products. A company that sells only ENERGY STAR
qualified roof products shall offer a warranty that is equal in all
material respects to the standard industry warranty for comparable
non-ENERGY STAR qualified roof products.
4. Test Requirements
4.1 Representative Models shall be selected for testing per the following requirements:
4.1.1 For qualification of an individual product model, the representative product shall be equivalent to
that which is intended to be marketed and labeled as ENERGY STAR.
4.1.2 For qualification of a product family, one product shall be designated as the Color Family
Representative Element. The Color Family Representative Element shall be tested for initial and
aged solar reflectance and thermal emittance. Additional products to be submitted into an already
established Color Family Group are called Color Family Additional Elements. Color Family
Additional Elements shall also be tested for initial solar reflectance and thermal emittance, but
aged testing is not required. All Color Family Elements shall be tested for Hunter "L", "a", "b"
values. Color families are defined in Table 1. CRRC Color Families and Characteristics.10
10 As found in Cool Roof Rating Council's Product Rating Program Manual CRRC-1. 2009.
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4.1.3	For Color Family Representative Elements, aged reflectance values are subsequently established
for the Color Family Group as either the measured aged values of the Color Family
Representative Element or the initial Color Family default values, whichever is lower.
4.1.4	After a Color Family Group is established by rating a Color Family Representative Element,
additional products of the same binder/resin technology that fall within the specified Hunter "L",
"a", "b" color range can then be added to the Color Family Group as "Color Family Additional
Elements" by testing each Additional Element's initial solar reflectance and thermal emittance.
Measured values shall be no higher than the average of the initial test results of the Color Family
Representative Element.
Note: No aged testing is required for Color Family Additional Elements. The Color Family
Additional Element shall qualify using the aged solar reflectance value of the Representative
Element of the Color Family Group; either the initial Color Family Group default value or the actual
aged rated value of the Representative Element, whichever is lower.11
4.1.5	When testing roof products, the following test methods shall be used to determine ENERGY
STAR qualification:
Table 3: Test Methods for ENERGY STAR Qualification
ENERGY STAR Requirement
Test Method Reference
Initial Solar Reflectance
ASTM E 903-96 - Standard Test Method for Solar
Absorptance, Reflectance, and Transmission of Materials
Using Integrating Spheres (solar reflectance only, values
for solar absorptance and transmission need not be
obtained), or
ASTM C 1549-09 - Standard Test Method for
Determination of Solar Reflectance Near Ambient
Temperature Using a Portable Solar Reflectometer
Variegated roof products may be tested according to the
CRRC Test Method #1.
Maintenance of Solar Reflectance
ENERGY STAR Test Method for Roof Products:
Maintenance of Solar Reflectance
Emissivity
ASTM C1371-04a - Standard Test Method for
Determination of Emittance of Materials Near Room
Temperature using Portable Emissometers, or
ASTM E408-71(1996) e1 - Standard Test Method for Total
Normal Emittance of Surfaces Using Inspection-Meter
Techniques.
4.2 Initial Solar Reflectance: A 3' x3' flat sample of each product shall be submitted for testing. The
test shall be performed using a black background for the sample. Where appropriate, the sample
shall be prepared according to manufacturer recommendation for thickness used in the field.
11 As found in Cool Roof Rating Council's Product Rating Program Manual CRRC-1, 2009
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4.3	Changes to Product Formulation: If a fundamental element of product formulation occurs, such
as the base latex, the product shall be retested for the solar reflectance of both initially and
according to the Maintenance of Solar Reflectance Test Method. In addition, to ensure other
product formulation changes will not affect the solar reflectance of the product, evidence shall be
provided that shows product formulation or recipe has not changed since the solar reflectance
testing was performed.
4.4	Color Family Element Testing: All Color Family Elements shall be tested for Hunter "L", "a", "b"
values. Color families are defined in Table 1. CRRC Color Families and Characteristics found in
of CRRC Product Rating Program Manual (CRRC-1).
4.5	Emissivity: Initial emissivity results shall be tested according to the test methods listed in Table 3
of this specification. Roof products are not required to meet minimum emissivity requirements for
ENERGY STAR qualification at this time.
4.6	For existing products qualified under previous versions of this roof products specification, retesting
aged solar reflectance on uncleaned samples is not required. These products will be denoted in
some manner on the ENERGY STAR qualifying product list as having been tested on clean
samples.
5. Effective Date
The ENERGY STAR Roof Products Specification shall take effect on August 13, 2009. To qualify for
ENERGY STAR, a product model shall meet the ENERGY STAR specification in effect on the date of
manufacture. The date of manufacture is specific to each unit and is the date (e.g., month and year) on
which a unit is considered to be completely assembled.
6. Future Specification Revisions
EPA reserves the right to change the specification should technological and/or market changes affect its
usefulness to consumers, industry, or the environment. In keeping with current policy, revisions to the
specification are arrived at through industry discussions. In the event of a specification revision, please
note that the ENERGY STAR qualification is not automatically granted for the life of a product model.
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ENERGY STAR
ENERGY STAR® Program Requirements
Product Specification for Roof Products
Test Method: Maintenance of Solar Reflectance
1) OVERVIEW
The following test method shall be used for determining product compliance with maintenance of solar reflectance
requirements in the ENERGY STAR Product Specification for Roof Products.
2) APPLICABILITY
This test protocol is applicable for evaluation to the ENERGY STAR Roof Products Eligibility Criteria.
3) DEFINITIONS
Unless otherwise specified, all terms used in this document are consistent with the definitions contained in
the ENERGY STAR Product Specification for Roof Products.
4) TEST SETUP
Test setup and instrumentation shall be in accordance with applicable test standards, as referenced
herein, unless otherwise noted in this document. In the event of conflicting requirements, this test
procedure shall take precedence.
5) PREPARATION OF PRODUCT UNDER TEST
The test surface of each sample shall not be washed, cleaned, or wiped in any fashion. Loose dirt,
embedded dirt, environmental stains, mold, mildew, and any other material that rests on - or has become
incorporated into - the surface of the material shall not be altered.
6) TEST METHODS
Maintenance of Solar Reflectance shall be measured using test method A, B, C, or D:
A. Field measurement of Solar Reflectance for roof products and coatings installed at least 3-years prior
Low Sloped Roof Products - Applicable Test Standards
Test setup and instrumentation shall be in accordance with applicable test standards, as referenced
herein:
a)	ASTM E 1918-06: Standard Test Method for Measuring Solar Reflectance of Horizontal
and Low-Sloped Surfaces in the Field, or
b)	ASTM C 1549-09: Standard Test Method for Determination of Solar Reflectance Near
Ambient Temperature Using a Portable Solar Reflectometer
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Low Sloped Roof Products - Test Procedure
a)	Identify three (3) existing roofs on which the same product was installed a minimum of
three years prior. At least one of these existing roofs shall be located within a major
metropolitan area such as Atlanta, Boston, Chicago, Dallas, Houston, Los Angeles,
Miami, Minneapolis, New York, Philadelphia, San Francisco, St. Louis, Washington D.C.,
etc. The roof product need not have been installed at the same time on the three
buildings; however, the roofs shall each be at least three years old.
b)	Divide the roof into at least ten (10) equal sections.
c)	Perform measurements in the center of each area.
d)	At least three (3) repetitions shall be made of each measurement (the exact same area).
Note that if a pond or birdbath occurs in the center of the area to be measured, offset the
measurement location so that it is outside of the pond or birdbath.
e)	If testing is performed to ASTM E 1918-06, measurements shall be taken on a clear day
(no clouds) between 10:00 AM and 2:00 PM when the sun is high in the sky and there can
be no obstruction in the field of view.
Steep Sloped Roof Products - Applicable Test Standard
Test setup and instrumentation shall be in accordance with ASTM C 1549-09: Standard Test Method
for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar
Reflectometer.
Steep Sloped Roof Products - Test Procedure
a)	Identify three (3) existing roofs on which the same product was installed a minimum of
three years prior. At least one of these existing roofs shall be located within a major
metropolitan area such as Atlanta, Boston, Chicago, Dallas, Houston, Los Angeles,
Miami, Minneapolis, New York, Philadelphia, San Francisco, St. Louis, Washington D.C.,
etc. The roof product need not have been installed at the same time on the three
buildings; however, the roofs shall each be at least three years old.
b)	Divide the roof into at least ten (10) equal sections.
c)	Perform measurements in the center of each area.
d)	Make at least three (3) repetitions of each measurement (the exact same area). Note that
if a pond or birdbath occurs in the center of the area to be measured, offset the
measurement location so that it is outside of the pond or birdbath.
Test Lab measurement of roof products and coating samples taken from roofs installed at
least 3-years prior
Applicable Test Standards
Test setup and instrumentation shall be in accordance with applicable test standards, as referenced
herein:
a)	ASTM E 903-96: Standard Test Method for Solar Absorptance, Reflectance, and
Transmission of Materials Using Integrating Spheres, or
b)	ASTM C 1549-09: Standard Test Method for Determination of Solar Reflectance Near
Ambient Temperature Using a Portable Solar Reflectometer
Test Procedure
a) Identify three (3) existing roofs on which the same product was installed a minimum of
three years prior. At least one of these existing roofs shall be located within a major
metropolitan area such as Atlanta, Boston, Chicago, Dallas, Houston, Los Angeles,

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Miami, Minneapolis, New York, Philadelphia, San Francisco, St. Louis, Washington D.C.,
etc. The roof product need not have been installed at the same time on the three
buildings; however, the roofs shall each be at least three years old.
b)
Take a minimum of three (3) samples from the each of the existing roofs as identified
above.
c)
Make at least three (3) measurements of solar reflectance from different areas on each
sample.
d)
Ensure that the roof from which samples were taken is properly repaired so as to resume
watertight integrity.
C. Test Lab measurement of roof products and coating samples exposed for three years in
accordance with ASTM G 7-05: Standard Practice for Atmospheric Environmental Exposure
Testing of Nonmetaiiic Materials on commercial or private weathering farms
Applicable Test Standards
Test setup and instrumentation shall be in accordance with applicable test standards, as referenced
herein:
a)
ASTM G 7-05: Standard Practice for Atmospheric Environmental Exposure Testing of
Nonmetaiiic Materials
b)
ASTM E 903-96: Standard Test Method for Solar Absorptance, Reflectance, and
Transmission of Materials Using Integrating Spheres, or
c)
ASTM C 1549-09: Standard Test Method for Determination of Solar Reflectance Near
Ambient Temperature Using a Portable Solar Reflectometer
Test Procedure
a)
Expose panels outdoors on commercial or private weathering farms that are accredited to
ISO/IEC 17025:1999 General Requirements for the Competence of Testing and
Calibration Laboratories.
b)
Prepare panels such that the surface to receive solar radiation goes over the intended
substrate1.
c)
At least three (3) panels with the identical formulation as those that were tested for initial
solar reflectance shall be exposed for three years in accordance with ASTM G 7-05.
d)
Each exposure panel shall be at least 24 square inches (155 square centimeters) in size,
e.g. 4" x 6" or 3" x 8", and shall be mounted so that there is no run off from one panel to
another.
e)
To further avoid runoff onto samples, where possible, the exposure panel shall be
mounted near the top of the test rack.
f)
For low-slope roof products and coatinas and for product that can be applied to either low-
slope or steep-slope roofs, test samples shall be exposed at a slope of 2:12 or less
(1/4:12 is recommended) and facing south.
g)
For steep-slope roof products and coatings, test samples shall be exposed at a slope
between 2:12 and 12:12 (4:12 is recommended) and facing south.
h)
Make at least three (3) measurements of solar reflectance from different areas on each
sample
1 For example, if a coating is intended for BUR, the specimen set needs to be prepared using BUR. If the coating is to
be used over Modified Bitumen, a specimen set needs to be prepared using Modified Bitumen.

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