ASTM D7793-21

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7793 − 20 D7793 − 21
Standard Specification for
1
Insulated Vinyl Siding
This standard is issued under the fixed designation D7793; 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*
1.1 This specification establishes requirements for insulated vinyl siding, which is vinyl siding with integral foam plastic
insulating material, where the vinyl siding is manufactured from rigid PVC compound. Compliance with this standard requires
insulated vinyl siding to demonstrate a thermal insulation value of R-2.0 or greater. Other performance requirements and test
methods addressed by this standard include materials properties and dimensions, warp, shrinkage, impact strength, expansion,
appearance, thermal distortion resistance, flame spread, and windload resistance. Methods of indicating compliance with this
specification are also provided.
NOTE 1—Insulated vinyl siding is composed of two major components: the vinyl siding and the insulating material. It is intended that the vinyl siding
portion comply with Specification D3679. Applicable portions of Specification D3679 are included in this specification. Additional requirements that
pertain only to the insulation as a separate material, or to the combination of vinyl siding and insulation as a whole, are also included. For further
explanation, see Appendix X1.
1.2 Insulated vinyl siding shall be tested with the insulation material in place or removed, as specified in the applicable
requirement or test method.
1.3 The use of PVC recycled plastic in this product shall be in accordance with the requirements in Section 4.
1.4 Insulated vinyl siding produced to this specification shall be installed in accordance with Practice D4756. Reference shall also
be made to the manufacturer’s installation instructions for the specific product to be installed.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.6 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
NOTE 2—There is no known ISO equivalent to this standard.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.24 on Plastic Building Products.
Current edition approved Dec. 1, 2020Dec. 1, 2021. Published December 2020December 2021. Originally approved in 2012. Last previous edition approved in 20172020
as D7793 – 17. DOI:10.1520/D7793-20.20. DOI:10.1520/D7793-21.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D7793 − 21
2. Referenced Documents
2
2.1 ASTM Standards:
C297/C297M Test Method for Flatwise Tensile Strength of Sandwich Constructions
C578 Specification for Rigid, Cellular Polystyrene Thermal Insulation
C591 Specification for Unfaced Preformed Rigid Cellular Polyisocyanurate Thermal Insulation
C1199 Test Method for Measuring the Steady-State Thermal Transmittance of Fenestration Systems Using Hot Box Methods
C1289 Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
C1363 Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus
D618 Practice for Conditioning Plastics for Testing
D635 Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position
D696 Test Method for Coefficient of Linear Thermal Expansion of Plastics Between −30°C and 30°C with a Vitreous Silica
Dilatometer
D1042 Test Method for Linear Dimens
...

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: D7793 − 21
Standard Specification for
1
Insulated Vinyl Siding
This standard is issued under the fixed designation D7793; 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.
NOTE 2—There is no known ISO equivalent to this standard.
1. Scope*
1.7 This international standard was developed in accor-
1.1 This specification establishes requirements for insulated
dance with internationally recognized principles on standard-
vinyl siding, which is vinyl siding with integral foam plastic
ization established in the Decision on Principles for the
insulating material, where the vinyl siding is manufactured
Development of International Standards, Guides and Recom-
from rigid PVC compound. Compliance with this standard
mendations issued by the World Trade Organization Technical
requires insulated vinyl siding to demonstrate a thermal insu-
Barriers to Trade (TBT) Committee.
lation value of R-2.0 or greater. Other performance require-
ments and test methods addressed by this standard include
2. Referenced Documents
materials properties and dimensions, warp, shrinkage, impact
2
2.1 ASTM Standards:
strength, expansion, appearance, thermal distortion resistance,
C297/C297M Test Method for Flatwise Tensile Strength of
flame spread, and windload resistance. Methods of indicating
Sandwich Constructions
compliance with this specification are also provided.
C578 Specification for Rigid, Cellular Polystyrene Thermal
NOTE 1—Insulated vinyl siding is composed of two major components:
Insulation
the vinyl siding and the insulating material. It is intended that the vinyl
siding portion comply with Specification D3679. Applicable portions of
C591 Specification for Unfaced Preformed Rigid Cellular
Specification D3679 are included in this specification. Additional require-
Polyisocyanurate Thermal Insulation
ments that pertain only to the insulation as a separate material, or to the
C1199 Test Method for Measuring the Steady-State Thermal
combination of vinyl siding and insulation as a whole, are also included.
Transmittance of Fenestration Systems Using Hot Box
For further explanation, see Appendix X1.
Methods
1.2 Insulated vinyl siding shall be tested with the insulation
C1289 Specification for Faced Rigid Cellular Polyisocyanu-
material in place or removed, as specified in the applicable
rate Thermal Insulation Board
requirement or test method.
C1363 Test Method for Thermal Performance of Building
1.3 The use of PVC recycled plastic in this product shall be
Materials and Envelope Assemblies by Means of a Hot
in accordance with the requirements in Section 4.
Box Apparatus
D618 Practice for Conditioning Plastics for Testing
1.4 Insulated vinyl siding produced to this specification
D635 Test Method for Rate of Burning and/or Extent and
shall be installed in accordance with Practice D4756. Refer-
Time of Burning of Plastics in a Horizontal Position
ence shall also be made to the manufacturer’s installation
D696 Test Method for Coefficient of Linear Thermal Expan-
instructions for the specific product to be installed.
sion of Plastics Between −30°C and 30°C with a Vitreous
1.5 The values stated in inch-pound units are to be regarded
Silica Dilatometer
as standard. The values given in parentheses are mathematical
D1042 Test Method for Linear Dimensional Changes of
conversions to SI units that are provided for information only
Plastics Caused by Exposure to Heat and Moisture
and are not considered standard.
D1183 Practices for Resistance of Adhesives to Cyclic
1.6 This standard does not purport to address all of the
Laboratory Aging Conditions
safety concerns, if any, associated with its use. It is the
D1435 Practice for Outdoor Weathering of Plastics
responsibility of the user of this standard to establish appro-
D2244 Practice for Calculation of Color Tolerances and
priate safety, health, and environmental practices and deter-
Color Differences from Instrumentally Measured Color
mine the applicability of regulatory limitations prior to use.
Coordinates
D2457 Test Method for Specular Gloss of Plastic Films and
Solid Plastics
1
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.24 on Plastic Building
2
Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2021. Published December 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2012. Last previous edition approved in 2020 as D7793 – 20. Standards volume information, refer to the
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