ASTM D5401 - 03(2009)

    Standard Test Method for Evaluating Clear Water Repellent Coatings on Wood

    Active Standard ASTM D5401 | Developed by Subcommittee: D01.42

    Book of Standards Volume: 06.02


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    ASTM D5401

    Significance and Use

    Water is known to penetrate wood substrates, causing dimensional instability and eventual deterioration. Clear water repellent coatings are designed to protect wood from damaging effects of water. This test method is used to evaluate the effectiveness of water repellent coatings on wood soon after application or after long-term exterior exposure.

    1. Scope

    1.1 This test method evaluates the effectiveness of clear water repellent coatings on wood before or after exterior exposure.

    1.2 Intralaboratory results with this test method can be used to compare the effectiveness of clear water repellent coatings. The agreement between results obtained in different laboratories may be less satisfactory unless a known water repellent is used as a reference.

    1.3 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.

    1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D358 Specification for Wood to Be Used as Panels in Weathering Tests of Coatings

    D1006 Practice for Conducting Exterior Exposure Tests of Paints on Wood

    D1193 Specification for Reagent Water

    D3924 Specification for Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials


    ICS Code

    ICS Number Code 79.040 (Wood, sawlogs and sawn timber)

    UNSPSC Code

    UNSPSC Code 46181533(Protective coats)


    DOI: 10.1520/D5401-03R09

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