ASTM D7254-07

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7254 −07 AnAmerican National Standard
Standard Specification for
Polypropylene (PP) Siding
This standard is issued under the fixed designation D7254; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4101 Specification for Polypropylene Injection and Extru-
sion Materials
1.1 This specification establishes requirements and test
D4226 Test Methods for Impact Resistance of Rigid Poly-
methods for materials, impact strength, appearance, surface
(Vinyl Chloride) (PVC) Building Products
flame spread, and windload resistance of siding products
D5033 GuideforDevelopmentofASTMStandardsRelating
manufactured from polypropylene material. Methods of indi-
to Recycling and Use of Recycled Plastics (Withdrawn
cating compliance with this specification are also provided.
2007)
1.2 The use of polypropylene recycled plastic in this prod-
D5206 Test Method for Windload Resistance of Rigid Plas-
uct shall be in accordance with the requirements in Section 4.
tic Siding
E84 Test Method for Surface Burning Characteristics of
1.3 Siding produced to this specification shall be installed in
accordancewithmanufacturer’sinstallationinstructionsforthe Building Materials
E631 Terminology of Building Constructions
specific product to be installed.
NOTE 1—Information with regard to siding maintenance shall be
G147 Practice for Conditioning and Handling of Nonmetal-
obtained from the manufacturer.
lic Materials for Natural and Artificial Weathering Tests
1.4 The values stated in inch-pound units are to be regarded
2.2 ASCE Standard:
as the standard. The SI units given in parentheses are for
ASCE7-02 MinimumDesignLoadsforBuildingsandOther
information purposes only.
Structures
1.5 The following precautionary caveat pertains to the test
method portion only, Section 6 of this specification: This 3. Terminology
standard does not purport to address all of the safety concerns,
3.1 Definitions are in accordance with Terminologies D883,
if any, associated with its use. It is the responsibility of the user
D1600, and E631, unless otherwise specified.
of this standard to establish appropriate safety and health
3.2 Definitions of Terms Specific to This Standard:
practices and determine the applicability of regulatory limita-
3.2.1 polypropylene siding—a shaped material, made prin-
tions prior to use.
cipally from polypropylene homopolymer, or copolymer,
NOTE 2—There is no known ISO equivalent to this standard.
which in some cases may contain fillers and/or reinforcements,
that is used to clad exterior walls of buildings.
2. Referenced Documents
3.2.2 self-supporting specimen—a specimen that remains in
2.1 ASTM Standards:
place by its own structural characteristics both before and
D883 Terminology Relating to Plastics
during the fire test.
D1435 Practice for Outdoor Weathering of Plastics
3.2.3 temperate northern climate—in weather testing,a
D1600 Terminology forAbbreviatedTerms Relating to Plas-
North American metropolitan area testing site located within
tics
73 to 100° W longitude and 37 to 45° N latitude.
D3679 Specification for Rigid Poly(Vinyl Chloride) (PVC)
Siding
4. Materials and Manufacture
D3892 Practice for Packaging/Packing of Plastics
4.1 The siding shall be made principally of polypropylene
compound, prepared from polypropylene homopolymer or
This specification is under the jurisdiction of ASTM Committee D20 on
copolymer.
Plastics and is the direct responsibility of Subcommittee D20.24 on Plastic Building
Products.
Current edition approved Jan. 1, 2007. Published January 2007. DOI: 10.1520/
D7254-07.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
Standards volume information, refer to the standard’s Document Summary page on Available from American Society of Civil Engineers (ASCE), 1801 Alexander
the ASTM website. Bell Dr., Reston, VA 20191.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7254 − 07
4.2 Where polypropylene recycled plastic as defined in 6.2 Impact Resistance:
Guide D5033 is used, the siding containing the polypropylene 6.2.1 Conditioning and Test Conditions—Condition the test
recycled plastic shall meet all the requirements in the sections specimen in accordance with Specification D4101 and test
on Terminology (Section 3), on Materials and Manufacture under those conditions unless otherwise specified herein.
(Section 4), and on Physical Requirements (Section 5). Conditioning time for tests shall be at least 4 hours.
6.2.2 Impact Test—Test impact resistance of siding in ac-
4.3 The polypropylene compound shall be compounded so
cordance with Test Method D4226, Procedure A, impactor
as to provide the heat stability and weather exposure stability
head configuration H.25.
required for the siding market application.
6.3 Weatherability—Expose test specimens with a plywood
5. Physical Requirements
backing at an angle of 45° South in the northern hemisphere in
5.1 Color—The color of the siding shall be within the
accordance with Practices D1435 and G147 for two years in at
defined color parameters for the specific color agreed upon
least three widely different climatic areas. A hot, dry climate,
between the purchaser and the seller.
such as Phoenix,AZ; a hot, humid climate such as Miami, FL;
and a temperate, northern climate are suggested sites.
5.2 Impact Resistance—Siding shall have a minimum im-
6.3.1 Specimens shall be a minimum of 2 by 3 ⁄4 in. (51 by
pact strength of 35 in-lbf when tested in accordance with 6.2.
95 mm).
5.3 Weathering—The siding shall be free of any visual
6.4 Windload Resistance—Conduct the test on windload
surface or structural changes such as peeling, chipping,
resistance of the finished siding in accordance with Test
cracking,flaking,orpittingwhentestedinaccordancewith6.3.
Method D5206.
5.4 Windload Resistance—The siding panel(s) shall be able
6.5 Surface Flame Spread—Conduct the test on surface
to withstand a minimum static test pressure of 15.73 lbf/
flame spread characteristics in accordance with Test Method
ft (753 Pa) when tested in accordance with 6.4.
E84. The test specimen shall either be self-supporting by its
5.4.1 The static pressure of 15.73 lbf/ft (753 Pa) was
own structural characteristics or held in place by added
established to withstand structural loading conditions that
supports along the test specimen surface.
occur in 110 mph (177 km/h) wind-zone areas for elevations of
30 ft (9.1 m) and less in exposure category B, and is equivalent
2 7. Product Marking
to 29.12 lbf/ft (1394 Pa) design pressure.
5.4.1.1 The design-pressure values can be negative (suction
7.1 In order for purchasers to identify siding conforming to
loads) or positive. The negative values are the largest in all requirements of this specification, producers and distribu-
magnitude and are the values used for this specification.
tors shall include a statement of compliance in conjunction
5.4.1.2 Refer to Annex A1 for an explanation of how the with their name and address on product labels, invoices, sales
negative design pressure was established and for applications
literature, and the like. The following statement is suggested
where the effective negative design pressure as specified in when sufficient space is available: This PP siding conforms to
ASCE 7-02 is greater tha
...