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ASTM C 1325 : 2021

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Specification for Fiber-Mat Reinforced Cementitious Backer Units

Available format(s)

Hardcopy , PDF

Superseded date

13-10-2023

Superseded by

ASTM C 1325 : 2022

Language(s)

English

Published date

09-07-2021

€67.30
Excluding VAT

Committee
C 17
DocumentType
Standard
Pages
5
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1This specification covers non-asbestos fiber-mat reinforced cementitious backer units manufactured to be dimensionally stable and suitable as either an unfinished substrate (see Note 1) or as a substrate for decoration such as natural stone or tile on walls, floors, or decks in wet and dry areas. It is also suitable to be used as a substrate in the Application of Class PB Exterior Insulation Finish Systems (Practice C1397), the Application of Direct-Applied Finish Systems (Practice C1516), and the Application of Exterior Insulation Finish Systems Class PI (Practice C1535).

Note 1:When used as an unfinished substrate, consult the manufacturer's written installation literature for proper application details.

1.2This specification is not applicable to asbestos-cement flat sheets (Specification C220); non-asbestos fiber cement flat sheets for exterior applications such as claddings, facades, curtain walls, and soffits (Specification C1186); gypsum backing board, coreboard, and shaftliner (Specification C1396/C1396M); water-resistant gypsum backing board (Specification C1396/C1396M); glass mat gypsum backing board (Specification C1178/C1178M); particle boards (Definitions D1554); and discrete non-asbestos fiber cement interior substrate sheets (Specification C1288).

1.3Units—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.

1.4This 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.

ASTM C 1186 : 2022 Standard Specification for Flat Fiber-Cement Sheets
ASTM C 1516 : 2005 : R2017 Standard Practice for Application of Direct-Applied Exterior Finish Systems
ASTM C 1185 : 2008 : R2016 Standard Test Methods for Sampling and Testing Non-Asbestos Fiber-Cement Flat Sheet, Roofing and Siding Shingles, and Clapboards
ASTM C 1397 : 2013 : R2019 Standard Practice for Application of Class PB Exterior Insulation and Finish Systems (EIFS) and EIFS with Drainage
ASTM C 1288 : 2017 Standard Specification for Fiber-Cement Interior Substrate Sheets
ASTM C 1535 : 2005 : R2017 Standard Practice for Application of Exterior Insulation and Finish Systems Class PI
ASTM C 1186 : 2008 : R2016 Standard Specification for Flat Fiber-Cement Sheets
ASTM C 1732 : 2019 Standard Practice for Installation of Concrete Floor Tiles
ASTM C 1780 : 2020 Standard Practice for Installation Methods for Cement-based Adhered Masonry Veneer

ASTM E 84 : 2022 Standard Test Method for Surface Burning Characteristics of Building Materials
ASTM C 1396/C1396M : 2017 Standard Specification for Gypsum Board
ASTM E 84 : 2021 : REV A Standard Test Method for Surface Burning Characteristics of Building Materials
ASTM C 1186 : 2022 Standard Specification for Flat Fiber-Cement Sheets

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