ASTM C406-06e1
(Specification)Standard Specification for Roofing Slate
Standard Specification for Roofing Slate
ABSTRACT
This specification covers the material characteristics, physical requirements, and sampling method appropriate to the selection of roofing slate for use as roof shingles. Slates not included in this specification are those containing soft carbonaceous ribbons. Roofing shall be classified either as Grade S1, S2, or S3, wherein each grade shall meet specified breaking load, absorption, and depth of softening requirements.
SCOPE
1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection of slate for use as roof shingles.
1.2 Slates not included in this specification are those containing soft carbonaceous ribbons. The wide variation in physical properties and composition of such ribbon slates render their service life uncertain under some conditions of use.
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´1
Designation: C406 – 06
Standard Specification for
1
Roofing Slate
This standard is issued under the fixed designation C406; 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
´ NOTE—Section 6.1 was revised editorially in December 2006.
TABLE 1 Physical Requirements
1. Scope
Absorp- Depth of
1.1 This specification covers the material characteristics,
Breaking Load,
Classification tion, max, Softening, max,
A
min lbf(or N)
physical requirements, and sampling appropriate to the selec- B C
% in. (mm)
tion of slate for use as roof shingles.
Grade S 575 (2558) 0.25 0.002 (0.05)
1
1.2 Slates not included in this specification are those con-
Grade S 575 (2558) 0.36 0.008 (0.20)
2
Grade S 575 (2558) 0.45 0.014 (0.36)
taining soft carbonaceous ribbons. The wide variation in 3
A
See Test Methods C120.
physical properties and composition of such ribbon slates
B
See Test Method C121.
render their service life uncertain under some conditions of
C
See Test Method C217.
use.
2. Referenced Documents tion limited to the test specimen thickness, or greater thickness,
2
as determined under Test Methods C120.
2.1 ASTM Standards:
4.2 When comparing slates of the same grade and equal
C119 Terminology Relating to Dimension Stone
thickness, but from various sources, slates which meet the
C120 Test Methods of Flexure Testing of Slate (Breaking
required breaking load at the lowest specimen thickness will
Load, Modulus of Rupture, Modulus of Elasticity)
yield the best performance on the roof in terms of resistance to
C121 Test Method for Water Absorption of Slate
impact damage.
C217 Test Method for Weather Resistance of Slate
4.3 Expected service life of the various grades, depending
3. Terminology on geographic location and environmental exposure, is as
follows:
3.1 Definitions—Definitions shall be in accordance with
Grade Service Life (years)
Terminology C119.
Grade S over 75
1
3.2 Definitions of Terms Specific to This Standard:
Grade S 40 to 75
2
3.2.1 service life—a period of time over which the slate
Grade S 20 to 40
3
material is expected to require no repair or replacement due to
5. Ordering Information
weathering.
5.1 Color—The commercial color specified should be pre-
3.2.2 ribbons—narrow bands of carbonaceous material,
darker in color than the surrounding slate. These ribbons are ceded by the words “unfading” or “semi-weathering” or
“weathering” to indicate the allowable change in the original
inclusions of the original beds and are softer and less durable
than the surrounding material. slate color, over time, upon exposure on the roof.
5.2 Standard Roofs—Sloping roofs utilizing a nominal
4. Classification 3 1
thickness of ⁄16 to ⁄4 in. (4.8 to 6.4 mm), are known as
4.1 Roofing slate shall be classified by grade in accordance standard roofs. These shingles shall be rectangular unless
otherwise specified. These shingles shall be machine punched
with the physical requirements of Table 1, with the classifica-
or drilled for two nails located for proper headlap.
5.3 Textural Roofs—Sloping roofs utilizing various sizes,
1
This specification is under the jurisdiction of ASTM Committee C18 on
thicknesses, textures, and colors for architectural effects, are
Dimension Stone and is the direct responsibility of Subcommittee C18.03 on
known as textural roofs. These shingles shall be machine
Material Specifications.
punched or drilled for two nails located for proper headlap.
Current edition approved Dec. 21, 2006. Published June 2006. Originally
5.4 Graduated Roofs—Sloping roofs utilizing a greater
approved in 1957 as C406 – 57 T. Last previous edition approved in 2005 as
C406 – 05. DOI: 10.1520/C0406-06E01.
range of sizes, thicknesses, and exposed lengths of shingles,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
are known as graduated roofs. The slates are arranged on the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
roof so that the thickest and longest occur at the eaves and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. gradually diminish in size and thickness toward the ridges.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
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C406 – 06
These shingles shall be machine punched or drilled for two portion of the top face but on other parts will prevent close
nails located for proper headlap. contact of shingles. Shingles having knots or knurls on the
1
covered portions projecting in excess of ⁄16 in. (1.5 m
...
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.
´1
Designation:C406–06 Designation: C 406 – 06
Standard Specification for
1
Roofing Slate
This standard is issued under the fixed designation C 406; 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
´ NOTE—Section 6.1 was revised editorially in December 2006.
1. Scope
1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection of
slate for use as roof shingles.
1.2 Slates not included in this specification are those containing soft carbonaceous ribbons. The wide variation in physical
properties and composition of such ribbon slates render their service life uncertain under some conditions of use.
2. Referenced Documents
2
2.1 ASTM Standards:
C119 Terminology Relating to Dimension Stone
C 120 Test Methods of Flexure Testing of Slate (Breaking Load, Modulus of Rupture, Modulus of Elasticity)
C 121 Test Method for Water Absorption of Slate
C 217 Test Method for Weather Resistance of Slate
3. Terminology
3.1 Definitions—Definitions shall be in accordance with Terminology C 119.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 service life—a period of time over which the slate material is expected to require no repair or replacement due to
weathering.
3.2.2 ribbons—narrow bands of carbonaceous material, darker in color than the surrounding slate. These ribbons are inclusions
of the original beds and are softer and less durable than the surrounding material.
4. Classification
4.1 Roofing slate shall be classified by grade in accordance with the physical requirements of Table 1, with the classification
limited to the test specimen thickness, or greater thickness, as determined under Test Methods C 120.
4.2 When comparing slates of the same grade and equal thickness, but from various sources, slates which meet the required
breaking load at the lowest specimen thickness will yield the best performance on the roof in terms of resistance to impact damage.
4.3 Expected service life of the various grades, depending on geographic location and environmental exposure, is as follows:
Grade Service Life (years)
Grade S over 75
1
Grade S 40 to 75
2
Grade S 20 to 40
3
5. Ordering Information
5.1 Color—The commercial color specified should be preceded by the words “unfading” or “semi-weathering” or “weathering”
to indicate the allowable change in the original slate color, over time, upon exposure on the roof.
3 1
5.2 Standard Roofs—Sloping roofs utilizing a nominal thickness of ⁄16 to ⁄4 in. (4.8 to 6.4 mm), are known as standard roofs.
These shingles shall be rectangular unless otherwise specified. These shingles shall be machine punched or drilled for two nails
located for proper headlap.
5.3 Textural Roofs—Sloping roofs utilizing various sizes, thicknesses, textures, and colors for architectural effects, are known
as textural roofs. These shingles shall be machine punched or drilled for two nails located for proper headlap.
1
This specification is under the jurisdiction of ASTM Committee C18 on Dimension Stone and is the direct responsibility of Subcommittee C18.03 on Material
Specifications.
Current edition approved June 1,Dec. 21, 2006. Published June 2006. Originally approved in 1957 as C 406 – 57 T. Last previous edition approved in 2005 as C 406 – 05.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
´1
C406–06
TABLE 1 Physical Requirements
Absorp- Depth of
Breaking Load,
Classification tion, max, Softening, max,
A
min lbf(or N)
B C
% in. (mm)
Grade S 575 (2558) 0.25 0.002 (0.05)
1
Grade S 575 (2558) 0.36 0.008 (0.20)
2
Grade S 575 (2558) 0.45 0.014 (0.36)
3
A
See Test Methods C 120.
B
See Test Method C 121.
C
See Test Method C 217.
5.4 Graduated Roofs—Sloping roofs utilizing a greater range of sizes, thicknesses, and exposed lengths of shingles, are known
as graduated roofs. The slates are arranged on the roof so that the thickest and longest occur at the eaves and gradually diminish
insizeandthicknesstowardtheridges.
...
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.
´1
Designation:C406–06 Designation: C 406 – 06
Standard Specification for
1
Roofing Slate
This standard is issued under the fixed designation C 406; 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
´ NOTE—Section 6.1 was revised editorially in December 2006.
1. Scope
1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection of
slate for use as roof shingles.
1.2 Slates not included in this specification are those containing soft carbonaceous ribbons. The wide variation in physical
properties and composition of such ribbon slates render their service life uncertain under some conditions of use.
2. Referenced Documents
2
2.1 ASTM Standards:
C119 Terminology Relating to Dimension Stone
C 120 Test Methods of Flexure Testing of Slate (Breaking Load, Modulus of Rupture, Modulus of Elasticity)
C 121 Test Method for Water Absorption of Slate
C 217 Test Method for Weather Resistance of Slate
3. Terminology
3.1 Definitions—Definitions shall be in accordance with Terminology C 119.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 service life—a period of time over which the slate material is expected to require no repair or replacement due to
weathering.
3.2.2 ribbons—narrow bands of carbonaceous material, darker in color than the surrounding slate. These ribbons are inclusions
of the original beds and are softer and less durable than the surrounding material.
4. Classification
4.1 Roofing slate shall be classified by grade in accordance with the physical requirements of Table 1, with the classification
limited to the test specimen thickness, or greater thickness, as determined under Test Methods C 120.
4.2 When comparing slates of the same grade and equal thickness, but from various sources, slates which meet the required
breaking load at the lowest specimen thickness will yield the best performance on the roof in terms of resistance to impact damage.
4.3 Expected service life of the various grades, depending on geographic location and environmental exposure, is as follows:
Grade Service Life (years)
Grade S over 75
1
Grade S 40 to 75
2
Grade S 20 to 40
3
5. Ordering Information
5.1 Color—The commercial color specified should be preceded by the words “unfading” or “semi-weathering” or “weathering”
to indicate the allowable change in the original slate color, over time, upon exposure on the roof.
3 1
5.2 Standard Roofs—Sloping roofs utilizing a nominal thickness of ⁄16 to ⁄4 in. (4.8 to 6.4 mm), are known as standard roofs.
These shingles shall be rectangular unless otherwise specified. These shingles shall be machine punched or drilled for two nails
located for proper headlap.
5.3 Textural Roofs—Sloping roofs utilizing various sizes, thicknesses, textures, and colors for architectural effects, are known
as textural roofs. These shingles shall be machine punched or drilled for two nails located for proper headlap.
1
This specification is under the jurisdiction of ASTM Committee C18 on Dimension Stone and is the direct responsibility of Subcommittee C18.03 on Material
Specifications.
Current edition approved June 1,Dec. 21, 2006. Published June 2006. Originally approved in 1957 as C 406 – 57 T. Last previous edition approved in 2005 as C 406 – 05.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
´1
C406–06
TABLE 1 Physical Requirements
Absorp- Depth of
Breaking Load,
Classification tion, max, Softening, max,
A
min lbf(or N)
B C
% in. (mm)
Grade S 575 (2558) 0.25 0.002 (0.05)
1
Grade S 575 (2558) 0.36 0.008 (0.20)
2
Grade S 575 (2558) 0.45 0.014 (0.36)
3
A
See Test Methods C 120.
B
See Test Method C 121.
C
See Test Method C 217.
5.4 Graduated Roofs—Sloping roofs utilizing a greater range of sizes, thicknesses, and exposed lengths of shingles, are known
as graduated roofs. The slates are arranged on the roof so that the thickest and longest occur at the eaves and gradually diminish
insizeandthicknesstowardtheridges.
...
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