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ASTM D2626-04

(Specification)

Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing

Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing

ABSTRACT
This specification covers the standard for asphalt-saturated and coated organic felt base sheet with mineral surfacing on the top side, with or without perforations. These sheets are proposed for use as the first ply of a built-up roof and are also suitable for use as vapor retarder. The felt shall be manufactured principally from organic fibers, or mixtures thereof. The surface shall be smooth and uniform and reasonably free of lumps and particles of foreign substances. Physical requirements such as pliability, breaking strength, and water vapor permeance of the materials shall comply with the specifications prescribed herein.
SCOPE
1.1 This specification covers asphalt-saturated and coated organic felt base sheet with fine mineral surfacing on the top side, with or without perforations, for use as the first ply of a built-up roof. When not perforated this sheet may be used as a vapor retarder under roof insulation.  
1.2 The values stated in inch-pound units are to be regarded as the standard.

General Information

Status
Historical
Publication Date
31-Jul-2004
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
D08 - Roofing and Waterproofing
Drafting Committee
D08.04 - Felts, Fabrics and Bituminous Sheet Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D2626-97b - Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing
Effective Date
01-Aug-2004
Replaced By
ASTM D2626/D2626M-04(2012)e1 - Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing
Effective Date
01-May-2012
Referred By
ASTM E108-20a - Standard Test Methods for Fire Tests of Roof Coverings
Effective Date
01-Aug-2004

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ASTM D2626-04 - Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in RoofingASTM D2626-04 - Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing
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ASTM D2626-04 - Standard Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing
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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: D2626 – 04
Standard Specification for
Asphalt-Saturated and Coated Organic Felt Base Sheet
1
Used in Roofing
This standard is issued under the fixed designation D2626; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Materials and Manufacture
1.1 This specification covers asphalt-saturated and coated 4.1 In the process of manufacture, a single thickness of dry
organic felt base sheet with mineral surfacing on the top side, organic felt shall be saturated with hot asphalt, coated on both
with or without perforations, for use as the first ply of a sides with a hot asphaltic material, and surfaced on the top side
built-uproof.Whennotperforated,thissheetissuitableforuse with mineral surfacing.
as a vapor retarder, with a solid mopping of asphaltic material, 4.2 The felt shall be produced principally from organic
under roof insulation or between multiple layers of roof fibers, or mixtures thereof. The surface of the felt shall be
insulation. uniform and relatively smooth. Upon splitting or tearing on the
1.2 The values stated in SI units are to be regarded as the bias,thefeltshallappearreasonablyfreeoflumpsandparticles
standard. The values in parentheses are for information only. of foreign substances.
4.3 The coating shall be a hot-applied asphalt material
2. Referenced Documents
permitted to be compounded with a mineral stabilizer.
2
2.1 ASTM Standards:
4.4 The reverse side of the base sheet may be covered with
D146 Test Methods for Sampling and Testing Bitumen- a suitable material to prevent sticking in the roll.
Saturated Felts and Woven Fabrics for Roofing and Wa-
5. Physical Properties
terproofing
D226 SpecificationforAsphalt-SaturatedOrganicFeltUsed 5.1 The material shall conform to the physical requirements
in Roofing and Waterproofing prescribed in Table 1 and the dimensions and masses pre-
D228 Test Methods for Sampling, Testing, and Analysis of scribed in Table 2 and Table 3. Perforated base sheets shall
Asphalt Roll Roofing, Cap Sheets, and Shingles Used in conform to the same requirements as the plain type but shall
Roofing and Waterproofing also have uniformly spaced perforations.
D1079 Terminology Relating to Roofing and Waterproofing 5.2 The finished product shall not crack nor be so sticky as
E96/E96M Test Methods for Water Vapor Transmission of to cause tearing or other damage upon being unrolled at
Materials temperatures between 10 and 60°C (50 and 140°F).
3. Terminology 6. Dimensions, Mass, and Permissible Variations
3.1 Definitions—For definitions of terms used in this speci- 6.1 The material shall conform to the dimensions and
fication, refer to Terminology D1079. masses prescribed in Table 2.
3.2 Definitions of Terms Specific to This Standard: 6.2 Perforatedmaterialshallalsoconformtothedimensions
3.2.1 lot—for the purpose of sampling, a lot shall consist of and other requirements prescribed in Table 3.
allmaterialofthesametypeandsizeofferedfordeliveryatone
7. Workmanship, Finish, and Appearance
time.
7.1 The felt shall be thoroughly and uniformly saturated,
and shall show no unsaturated spots at any point upon cutting
1
This specification is under the jurisdiction of ASTM Committee D08 on
50-mm (2-in.) wide strips at random across the entire width of
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.04
the sheet and splitting them open for their full length.
on Felts and Fabrics.
Current edition approved Aug.1, 2004. Published August 2004. Originally
7.2 The coating shall be applied uniformly on both sides of
approved in 1967. Last previous edition approved in 1997 as D2626 – 97b. DOI:
the sheet in a continuous, unbroken film that extends to the
10.1520/D2626-04.
2 edgesofthesheet.Thecoatingmaybesmoothorfinelyveined,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM but not coarsely veined.
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 ----------------------
D2626 – 04
TABLE 1 Physical Requirements of Asphalt-Saturated and
protuberances, and indentations, except for intentionally pro-
Coated Base Sheet
vided perforations and the associated protuberances.
Pliability, number of failures, max 2
Behavior on heating no flowing, sagging, 8. Sampling and Test Methods
blistering, or abs
...

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1.1 This specification covers prefabricated, self-adhesive, glass fiber fabric reinforced, polymer-modified asphalt roll roofing, with granule surfacing, designed for steep slope applications. These products use polymer modifiers in their top and bottom coatings. These products have an adhesive bottom layer which is exposed by removal of a peel-away protective release paper or film sheet.  
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