ASTM C406/C406M-10
(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.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C406/C406M −10
StandardSpecification for
1
Roofing Slate
This standard is issued under the fixed designation C406/C406M; 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 inclusions of the original beds and are softer and less durable
than the surrounding material.
1.1 This specification covers the material characteristics,
physical requirements, and sampling appropriate to the selec-
4. Classification
tion of slate for use as roof shingles.
4.1 Roofing slate shall be classified by grade in accordance
1.2 Slates not included in this specification are those con-
with the physical requirements of Table 1, with the classifica-
taining soft carbonaceous ribbons. The wide variation in
tion limited to the test specimen thickness, or greater thickness,
physical properties and composition of such ribbon slates
as determined under Test Methods C120/C120M.
render their service life uncertain under some conditions of
use.
4.2 When comparing slates of the same grade and equal
thickness, but from various sources, slates which meet the
1.3 The values stated in either SI units or inch-pound units
required breaking load at the lowest specimen thickness will
are to be regarded separately as standard. The values stated in
yield the best performance on the roof in terms of resistance to
each system may not be exact equivalents; therefore, each
impact damage.
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
4.3 Expected service life of the various grades, depending
with the standard.
on geographic location and environmental exposure, is as
follows:
2. Referenced Documents
Grade Service Life (years)
2
2.1 ASTM Standards:
Grade S over 75
1
C119 Terminology Relating to Dimension Stone Grade S 40 to 75
2
Grade S 20 to 40
3
C120/C120M Test Methods of Flexure Testing of Slate
(Breaking Load, Modulus of Rupture, Modulus of Elas-
5. Ordering Information
ticity)
C121/C121M Test Method for Water Absorption of Slate 5.1 Color—The commercial color specified should be pre-
C217/C217M Test Method for Weather Resistance of Slate
ceded by the words “unfading” or “semi-weathering” or
“weathering” to indicate the allowable change in the original
3. Terminology
slate color, over time, upon exposure on the roof.
3.1 Definitions—Definitions shall be in accordance with
5.2 Standard Roofs—Sloping roofs utilizing a nominal
Terminology C119.
3 1
thickness of ⁄16 to ⁄4 in. [4.8 to 6.4 mm], are known as
3.2 Definitions of Terms Specific to This Standard:
standard roofs. These shingles shall be rectangular unless
3.2.1 service life—a period of time over which the slate
otherwise specified. These shingles shall be machine punched
material is expected to require no repair or replacement due to
or drilled for two nails located for proper headlap.
weathering.
5.3 Textural Roofs—Sloping roofs utilizing various sizes,
3.2.2 ribbons—narrow bands of carbonaceous material,
thicknesses, textures, and colors for architectural effects, are
darker in color than the surrounding slate. These ribbons 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
5.4 Graduated Roofs—Sloping roofs utilizing a greater
Material Specifications.
range of sizes, thicknesses, and exposed lengths of shingles,
Current edition approved Sept. 1, 2010. Published October 2010. Originally
are known as graduated roofs. The slates are arranged on the
approved in 1957 as C406 – 57 T. Last previous edition approved in 2006 as
´1
C406 – 06 . DOI: 10.1520/C0406_C406M-10.
roof so that the thickest and longest occur at the eaves and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
gradually diminish in size and thickness toward the ridges.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
These shingles shall be machine punched or drilled for two
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. nails located for proper headlap.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C406/C406M−10
TABLE 1 Physical Requirements
6.4 “Knots” and “knurls” are rounded defects, which affect
Absorp- Depth of the smoothness of split. They are acceptable on the exposed
Breaking Load,
Classification tion, max,
...
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: C406/C406M – 10
Standard Specification for
1
Roofing Slate
This standard is issued under the fixed designation C406/C406M; 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.
1
Asuperscript epsilon (´) indicates an editorial change since the last revision or reapproval. ´ 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.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
2. Referenced Documents
2
2.1 ASTM Standards:
C119 Terminology Relating to Dimension Stone
C120120/C120M Test Methods of Flexure Testing of Slate (Breaking Load, Modulus of Rupture, Modulus of Elasticity)
C121121/C121M Test Method for Water Absorption of Slate
C217217/C217M Test Method for Weather Resistance of Slate
3. Terminology
3.1 Definitions—Definitions shall be in accordance with Terminology C119.
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 C120C120/C120M.
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.
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 Dec. 21, 2006. Published June 2006. Originally approved in 1957 as C406–57 T. Last previous edition approved in 2005 as C406–05. DOI:
10.1520/C0406-06E01.
´1
Current edition approved Sept. 1, 2010. Published October 2010. Originally approved in 1957 as C406 – 57 T. Last previous edition approved in 2006 as C406–06 .
DOI: 10.1520/C0406_C406M-10.
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 ----------------------
C406/C406M – 10
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 [2560] 0.25 0.002 [0.05]
1
Grade S 575 (2558) 0.36 0.008 (0.20)
2
Grade S 575 [2560] 0.36 0.008 [0.20]
2
Grade S 575 (2558) 0.45 0.014 (0.36)
3
Grade S 575 [2560] 0.45 0.014 [0.36]
3
A
See Test Methods C120/C120M.
B
See Test Method C121/C121M.
C
See Test Method C217/C217M.
3 1
5.2 Standard Roofs—Slopingroofsutilizinganominalthicknessof ⁄16to ⁄4in.(4.8[4.8to6.4mm),mm],areknownasstandard
r
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.