ASTM E1264-23

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: E1264 − 22 E1264 − 23
Standard Classification for
Acoustical Ceiling Products
This standard is issued under the fixed designation E1264; 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 U.S. Department of Defense.
1. Scope
1.1 This classification covers ceiling products that provide acoustical performance and interior finish in buildings. Products used
in performance spaces and other special applications in some cases require more detailed specification than provided by this
classification.
1.2 This classification classifies acoustical ceilings by type, pattern, and certain ratings for acoustical performance, light
reflectance, and fire safety. It does not cover the aspects of acoustical ceilings when used as a component of a system or assembly
tested for fire endurance or floor/ceiling sound transmission.
1.3 This classification does not include physical properties, such as structural hardness, friability, sag, linear expansion and
contraction, and transverse strength, which affect the handling, installation, and use of acoustical ceiling products (see Test
Methods C367).
1.4 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.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
C367 Test Methods for Strength Properties of Prefabricated Architectural Acoustical Tile or Lay-In Ceiling Panels
C423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
C634 Terminology Relating to Building and Environmental Acoustics
E84 Test Method for Surface Burning Characteristics of Building Materials
E413 Classification for Rating Sound Insulation
E795 Practices for Mounting Test Specimens During Sound Absorption Tests
E1110 Classification for Determination of Articulation Class
E1111 Test Method for Measuring the Interzone Attenuation of Open Office Components
E1414 Test Method for Airborne Sound Attenuation Between Rooms Sharing a Common Ceiling Plenum
This classification is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.04
on Application of Acoustical Materials and Systems.
Current edition approved April 1, 2022May 15, 2023. Published April 2022June 2023. Originally approved in 1988. Last previous edition approved in 20192022 as
E1264 – 19.E1264 – 22. DOI: 10.1520/E1264-22.10.1520/E1264-23.
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 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
E1264 − 23
E1477 Test Method for Luminous Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers
3. Terminology
3.1 Terms used in this standard are defined either in Terminology C634 or within this standard. The definition of terms explicitly
given within this standard take precedence over definitions given in Terminology C634. The definitions within Terminology C634
and this standard take precedence over any other definitions of defined terms found in any other documents, including other
documents that may be referenced in this standard.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 acoustical panel, n—a form of a prefabricated sound absorbing ceiling element used with exposed suspension systems.
3.2.2 acoustical tile, n—a form of a prefabricated sound absorbing ceiling element used with concealed or semi-exposed
suspension systems, stapling, or adhesive bonding.
3.2.3 butt, n—a joint detail for acoustical tile, butt bevel, or butt square edge, without kerfing of the edges, intended for adhesive
bonding to solid backing.
3.2.4 cast or molded, n—making ceiling products in a way that the raw materials are mixed with water or liquid binder, then
deposited in a mold or form, and then dried/cured before being de-molded.
3.2.5 dry felted, n—making ceiling products in a way that mixes dry raw materials together and then air laid and cured with heat
to form a fibrous or felted structure.
3.2.6 edge and joint detail, n—various edge and joint details are available in accordance with Table 1 and Fig. 1 for acoustical
ceiling products.
3.2.7 excelsior, n—long, thin wood shavings.
3.2.8 fissured pattern, n—a surface with irregular depressions of varying lengths, widths, and depths extending below the basic
product face.
TABLE 1 Edge and Joint Detail, Types I, II, III, IV, VIII, IX, X, XI,
and XII
Acoustical Unit Edge Detail Joint Detail
Tile Beveled Kerfed and Rabbeted or Tongue
and Groove or Butt
Square Kerfed and Rabbeted or Tongue
and Groove or Butt
Beveled Long Edges, Kerfed and Rabbeted Long
Square Edge Trimmed on Edges Only, Ends Trimmed.
Ends (For Semi-concealed System)
Panels Square
Reveal
Tegular
Flush Reveal
Flush Tegular
Narrow Reveal
Narrow Tegular
Narrow Flush Reveal
Narrow Flush Tegular
Metal Pan Square
Reveal
Tegular
Flush Reveal
Flush Tegular
Narrow Reveal
Narrow Tegular
Narrow Flush Reveal
Narrow Flush Tegular
Metal Strip Varies with Manufacturer
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FIG. 1 Edge and Joint Details
3.2.9 flush reveal edge, n—acoustical lay-in panels are intended for use in direct hung exposed suspension systems with a narrow
exposed edge that is flush with the panel face.
3.2.10 flush tegular edge, n—acoustical lay-in panels are intended for use in direct hung exposed suspension systems with a
narrow exposed edge that is flush with the panel face.
3.2.11 glass fiber base, n—ceilings composed principally of glass in fiber form with appropriate binders.
3.2.12 kerfed and rabbeted, n—joint detail for acoustical tile. Tile with kerfed and rabbeted edges on all four sides, with or without
beveled edges, are intended for concealed suspension system or adhesive bonding.
3.2.13 kerfed and rabbeted long edges, ends trimmed, n—acoustical tile, 2 ft (609.6 mm) or longer, is intended for installation in
semi-exposed, or semi-exposed direct hung suspension systems.
3.2.14 metal facings (pans), n—metal facing (pan) ceiling systems with mineral or glass fiber base backings are intended for use
where sound absorption is needed and where durable and easily maintainable surfaces are a necessity.
3.2.15 mineral base, n—ceilings composed principally of mineral materials such as fibers manufactured from rock or slag, with
or without binders.
3.2.16 nodular, n—ceiling products that contain fiber or filler materials, or both, combined in a way to create small rounded or
irregularly shaped lumps or balls of material.
3.2.17 plenum, n—space between the top (backside) of the finished ceiling and the underside of the floor deck or roof deck above.
3.2.18 reveal edge, n—acoustical lay-in panels with step-down edge are intended for use in direct hung exposed suspension
systems.
3.2.19 square edge, n—acoustical lay-in panels with square edges are intended for use in direct hung exposed suspension systems.
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3.2.20 Discussion—Reveal, flush reveal, tegular, flush tegular, and square edged panels are laid in place and are pushed upward
for removal or access to the plenum above.
3.2.21 textured pattern, n—granular or raised (fine, coarse, or a blend), felted or matted surface as an integral part of the basic
product or superimposed on the product surface.
3.2.22 tegular edge, n—acoustical lay-in panels with step-down edge are intended for use in direct hung exposed suspension
systems.
3.2.23 tongue and groove, n—joint detail for acoustical tile. Tile with tongue and groove edges are intended for stapling, concealed
suspension system, or adhesive bonding.
3.2.24 wet felted, n—ceiling products made in a way that the raw materials are slurried in water to mix them, then agglomerated,
dewatered, and dried to form a fibrous or felted structure.
4. Significance and Use
4.1 This classification is used to classify and aid in the selection of acoustical ceiling products.
5. Basis of Classification
5.1 Acoustical ceiling products described using this classification are one or more of the following types, forms, patterns,
acoustical ratings, light reflectance values, and fire classes, as specified.
5.2 Ceiling Types:
5.2.1 Type I—Cellulose base with painted finish.
Type A – Mineral Base
Form A1 – with painted finish
1.1 Nodular
1.2 Wet formed
1.3 Dry formed
1.4 Cast or molded
1.5 Other
Form A2 – with membrane-faced overlay
2.1 Nodular
2.2 Wet formed
2.3 Dry formed
2.4 Cast or molded
2.5 Other
Form A3 – with a scrubbable pigment or clear finish
3.1 Nodular
3.2 Wet formed
3.3 Dry formed
3.4 Cast or molded
3.5 Other
Form A4 – with plastic or aluminum faced overlay
4.1 Nodular
4.2 Wet formed
4.3 Dry formed
4.4 Cast or molded
4.5 Other
Form A5 – with fabric faced overlay
5.1 Nodular
5.2 Wet formed
5.3 Dry formed
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5.4 Cast or molded
5.5 Other
Type B – Glass fiber base with membrane overlay
Form B1 – Plastic
Form B2 – Cloth
Form B3 – Other
Type C – Aluminum or steel facing pan with mineral or glass backing
Form C1 – Perforated
Form C2 – Non perforated
Type D – Aluminum or steel facing plank with mineral or glass fiber backing
Form D1 – Perforated
Form D2 – Non perforated
Type E – Excelsior bonded with inorganics
Form E1 – with a scrubbable pigment
Form E2 – with a mineral or glass fiber facing
Form E3 – with a mineral or glass fiber backing
Type F – Wood with a mineral or glass fiber backing
Form F1 – Perforated
Form F2 – Non perforated
Type G – Gypsum
Form G1 – Perforated
Form G2 – Non-perforated
Type H – Polycarbonate or Plastic
Type I – Felt including polyester, wool, cotton, and cellulose
Type J – Melamine foam tiles, planks and panels
Type XX – Other type (describe)
5.2.2 Type II—Cellulose base with membrane-faced overlay.
NOTE 1—The facings specified in Type A and Type B shall be separate overlays and not coatings similar to paint.
5.2.3 Type III—Mineral base with painted finish.
5.2.3.1 Form 1—Nodular.
5.2.3.2 Form 2—Wet felted.
5.2.3.3 Form 3—Dry felted.
5.2.3.4 Form 4—Cast or molded.
5.2.3.5 Form 5—Other (describe).
5.2.4 Type IV—Mineral base with membrane-faced overlay.
5.2.4.1 Form 1—Nodular.
5.2.4.2 Form 2—Wet felted.
5.2.4.3 Form 3—Dry felted.
5.2.4.4 Form 4—Cast or molded.
5.2.4.5 Form 5—Other (describe).
5.2.5 Type V—Perforated steel facing (pan) with mineral or glass fiber base backing.
5.2.6 Type VI—Perforated stainless steel facing (pan) with mineral or glass fiber base backing.
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5.2.7 Type VII—Perforated aluminum facing (pan) with mineral or glass fiber base backing.
5.2.8 Type VIII—Cellulose base with scrubbable pigmented or clear finish.
5.2.9 Type IX—Mineral base with scrubbable pigmented or clear finish.
5.2.9.1 Form 1—Nodular.
5.2.9.2 Form 2—Wet felted.
5.2.9
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