ASTM C406-05

Standard Specification for Roofing Slate

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

• Status: Historical
• Publication Date: 31-Dec-2004
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: C18 - Dimension Stone
• Drafting Committee: C18.03 - Material Specifications

Relations

• Replaces: ASTM C406-00 - Standard Specification for Roofing Slate
• Effective Date: 01-Jan-2005
• Replaced By: ASTM C406-06 - Standard Specification for Roofing Slate
• Effective Date: 01-Jun-2006
• Referred By: ASTM C120/C120M-19 - Standard Test Methods for Flexure Testing of Structural and Roofing Slate
• Effective Date: 01-Jan-2005
• Referred By: ASTM C1721-22 - Standard Guide for Petrographic Examination of Dimension Stone
• Effective Date: 01-Jan-2005
• Referred By: ASTM C1242-23 - Standard Guide for Selection, Design, and Installation of Dimension Stone Attachment Systems
• Effective Date: 01-Jan-2005
• Referred By: ASTM C1528/C1528M-20 - Standard Guide for Selection of Dimension Stone
• Effective Date: 01-Jan-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 406 – 05
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 (e) 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.
taining soft carbonaceous ribbons. The wide variation in
4.2 Expected service life of the various grades, depending
physical properties and composition of such ribbon slates
on geographic location and environmental exposure, is as
render their service life uncertain under some conditions of
follows:
use.
Grade Service Life (years)
Grade S over 75
2. Referenced Documents 1
Grade S 40 to 75
2
2
2.1 ASTM Standards: Grade S 20 to 40
3
C119 Terminology Relating to Dimension Stone
5. Ordering Information
C 120 Methods of Flexure Testing of Slate (Modulus of
5.1 Color—The following color nomenclature is commonly
Rupture, Modulus of Elasticity)
used:
C 121 Test Method for Water Absorption of Slate
C 217 Test Method for Weather Resistance of Slate Black Mottled purple and green
Blue black Green
Gray Purple variegated
3. Terminology
Blue gray Red
3.1 Definitions—Definitions shall be in accordance with Purple Weathering green (changes to buff or brown)
TerminologyC119.
5.2 Standard Roofs—Sloping roofs utilizing a nominal
3.2 Definitions of Terms Specific to This Standard:
3 1
thickness of ⁄16 to ⁄4 in. (4.8 to 6.4 mm), are known as
3.2.1 service life—a period of time over which the slate
standard roofs. These shingles shall be rectangular unless
material is expected to require no repair or replacement due to
otherwise specified. These shingles shall be machine punched
weathering.
or drilled for two nails located for proper headlap.
3.2.2 ribbons—narrow bands of carbonaceous material,
5.3 Textural Roofs—Sloping roofs utilizing various sizes,
darker in color than the surrounding slate. These ribbons are
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
5.4 Graduated Roofs—Sloping roofs utilizing a greater
Dimension Stone and is the direct responsibility of Subcommittee C18.03 on
Material Specifications.
range of sizes, thicknesses, and exposed lengths of shingles,
Current edition approved Jan. 1, 2005. Published February 2005. Originally
are known as graduated roofs. The slates are arranged on the
approved in 1957 as C 406 – 57 T. Last previous edition approved in 2000 a
...