ASTM D6904-03(2022)
(Practice)Standard Practice for Resistance to Wind-Driven Rain for Exterior Coatings Applied on Masonry
Standard Practice for Resistance to Wind-Driven Rain for Exterior Coatings Applied on Masonry
SIGNIFICANCE AND USE
4.1 This practice is meant to simulate the ability of a coating system applied to a masonry block to withstand exposure to continuous water spray (rain) and a dynamic pressure equivalent to a 98 mph wind velocity without exhibiting water leaks or weight gain, or both.
SCOPE
1.1 This practice is for the evaluation of the ability of coatings to resist the passage of water through masonry block when exposed to water spray and air pressure.
1.2 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.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
General Information
- Status
- Published
- Publication Date
- 31-Dec-2021
- Technical Committee
- D01 - Paint and Related Coatings, Materials, and Applications
- Drafting Committee
- D01.47 - Concrete, Stone and Masonry Treatments
Relations
- Effective Date
- 01-Apr-2016
- Effective Date
- 01-Nov-2012
- Effective Date
- 01-Jun-2011
- Refers
ASTM D3925-02(2010) - Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings - Effective Date
- 01-Dec-2010
- Effective Date
- 01-Jun-2008
- Effective Date
- 01-Feb-2005
- Effective Date
- 01-Dec-2003
- Effective Date
- 10-Aug-2002
- Refers
ASTM D1475-98 - Standard Test Method for Density of Liquid Coatings, Inks, and Related Products - Effective Date
- 10-Oct-1998
- Effective Date
- 01-Jan-1996
- Refers
ASTM D3925-91(1996) - Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings - Effective Date
- 15-Sep-1991
Overview
ASTM D6904-03(2022) - Standard Practice for Resistance to Wind-Driven Rain for Exterior Coatings Applied on Masonry is a widely recognized practice used to evaluate the resistance of exterior coatings to the passage of wind-driven rain through masonry surfaces. Developed by ASTM International, this practice simulates real-world conditions in which masonry coatings are exposed to continuous water spray and dynamic air pressure equivalent to a 98 mph wind. The test assesses whether coatings can prevent water infiltration and avoid significant weight gain or visible leaks, ensuring their suitability in demanding weather environments.
Key Topics
- Test Objective: Evaluates the ability of exterior coatings applied on masonry blocks to resist water penetration under simulated wind-driven rain conditions.
- Test Conditions: Continuous water spray is combined with air pressure to mimic driving rain experienced at high wind speeds.
- Specimens: Typically uses 8 x 16 x 2 inch masonry blocks coated with a block filler and then with the targeted exterior paint or coating.
- Evaluation Criteria: After a 24-hour exposure, the blocks are checked for visible water leaks or increased weight, which would indicate water absorption or penetration.
- Test Apparatus: Utilizes a specialized test box with transparent panels, spray nozzles, a compressed air source, rubber gaskets, and a manometer to control and monitor water and air pressure.
- Relevant Safety: Users must establish suitable safety, health, and environmental practices, and ensure compliance with regulatory requirements.
Applications
ASTM D6904-03(2022) is essential for:
- Manufacturers and Suppliers: Used during product development or quality control to demonstrate the wind-driven rain resistance of coatings on masonry surfaces.
- Architects and Specifiers: Provides evidence that specified coatings will perform effectively under severe weather conditions, minimizing the risk of water ingress and related structural damage.
- Building Owners and Contractors: Assures that coatings used in construction projects can withstand real-world environmental exposure, increasing the longevity of masonry structures and reducing maintenance costs.
- Coating Performance Comparison: Enables side-by-side evaluation of different products or formulations, helping stakeholders select the most suitable solution for exterior protection on buildings.
The practice can be adapted by agreement between parties to fit the requirements of specific projects, including variations in test length, pressure, or exposure conditions, making it versatile for a range of construction and renovation contexts.
Related Standards
ASTM D6904-03(2022) is part of a broader family of standards related to building materials and protective coatings, including:
- ASTM D1475: Test Method for Density of Liquid Coatings, Inks, and Related Products.
- ASTM D3924: Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials.
- ASTM D3925: Practice for Sampling Liquid Paints and Related Pigmented Coatings.
- Federal Specification TT-C-555B: Coating, Textured (For Interior and Exterior Masonry Surfaces).
These referenced documents ensure comprehensive evaluation and preparation for coatings prior to wind-driven rain testing.
By adhering to ASTM D6904-03(2022), stakeholders in construction, specification, and materials testing can ensure masonry coatings are robustly tested for water resistance, supporting durable and high-performance exterior surfaces in the built environment. For further information or to obtain a copy of the standard, visit ASTM International.
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Frequently Asked Questions
ASTM D6904-03(2022) is a standard published by ASTM International. Its full title is "Standard Practice for Resistance to Wind-Driven Rain for Exterior Coatings Applied on Masonry". This standard covers: SIGNIFICANCE AND USE 4.1 This practice is meant to simulate the ability of a coating system applied to a masonry block to withstand exposure to continuous water spray (rain) and a dynamic pressure equivalent to a 98 mph wind velocity without exhibiting water leaks or weight gain, or both. SCOPE 1.1 This practice is for the evaluation of the ability of coatings to resist the passage of water through masonry block when exposed to water spray and air pressure. 1.2 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. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.
SIGNIFICANCE AND USE 4.1 This practice is meant to simulate the ability of a coating system applied to a masonry block to withstand exposure to continuous water spray (rain) and a dynamic pressure equivalent to a 98 mph wind velocity without exhibiting water leaks or weight gain, or both. SCOPE 1.1 This practice is for the evaluation of the ability of coatings to resist the passage of water through masonry block when exposed to water spray and air pressure. 1.2 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. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.
ASTM D6904-03(2022) is classified under the following ICS (International Classification for Standards) categories: 91.080.30 - Masonry. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D6904-03(2022) has the following relationships with other standards: It is inter standard links to ASTM D3924-16, ASTM D1475-98(2012), ASTM D3924-80(2011), ASTM D3925-02(2010), ASTM D1475-98(2008), ASTM D3924-80(2005), ASTM D1475-98(2003), ASTM D3925-02, ASTM D1475-98, ASTM D3924-80(1996), ASTM D3925-91(1996). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D6904-03(2022) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.
Designation: D6904 − 03 (Reapproved 2022)
Standard Practice for
Resistance to Wind-Driven Rain for Exterior Coatings
Applied on Masonry
This standard is issued under the fixed designation D6904; 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.
1. Scope 2.2 Federal Standard:
TT-C-555B Coating, Textured (For Interior and Exterior
1.1 This practice is for the evaluation of the ability of
Masonry Surfaces)
coatings to resist the passage of water through masonry block
when exposed to water spray and air pressure.
3. Summary of Practice
1.2 The values stated in inch-pound units are to be regarded
3.1 Typically 8 by 16 by 2 in. masonry blocks are coated
as standard. The values given in parentheses are mathematical
with block filler and then coated with the masonry paint and
conversions to SI units that are provided for information only
allowed to cure. The coated blocks are then secured to a test
and are not considered standard.
apparatus and exposed for 24 h to continuous water spray and
1.3 This standard does not purport to address all of the
air pressure or as agreed upon between manufacturer and
safety concerns, if any, associated with its use. It is the
supplier. Upon completion of the exposure, the blocks are
responsibility of the user of this standard to establish appro-
removed, evaluated for visible water leaks or weight gain, or
priate safety, health, and environmental practices and deter-
both.
mine the applicability of regulatory limitations prior to use.
4. Significance and Use
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.1 Thispracticeismeanttosimulatetheabilityofacoating
ization established in the Decision on Principles for the
system applied to a masonry block to withstand exposure to
Development of International Standards, Guides and Recom-
continuous water spray (rain) and a dynamic pressure equiva-
mendations issued by the World Trade Organization Technical
lent to a 98 mph wind velocity without exhibiting water leaks
Barriers to Trade (TBT) Committee.
or weight gain, or both.
2. Referenced Documents 5. Apparatus
2.1 ASTM Standards:
5.1 The testing box is assembled from transparent plastic
D1475 Test Method for Density of Liquid Coatings, Inks,
panels ⁄2-in. thick and typically of the dimensions as shown in
and Related Products
Fig. 1. Three openings on the side, 6 by 12 in., are provided so
D3924 Specification for Standard Environment for Condi-
that the coated side of the three blocks may be positioned for
tioning and Testing Paint, Varnish, Lacquer, and Related
test. The openings on the top of the apparatus for the air inlet
Materials
and manometer connection shall not be less than 3 in. apart to
D3925 Practice for Sampling Liquid Paints and Related
make certain that air inlet turbulence will not effect the
Pigmented Coatings
manometer readings. A spray tube shall be constructed from
⁄2-in. plastic tubing with three fish-tail nozzles. Attachment to
the testing box includes a water-filled U-tube manometer,
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
source of compressed air, clamps and angle irons for securely
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments. fastening the test panels to the box, and a drain outlet. Also,
Current edition approved Jan. 1, 2022. Published January 2022. Originally
approved in 2003. Last previous edition approved in 2013 as D6904 – 03 (2013).
DOI: 10.1520/D6904-03R22. AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.access.gpo.gov.
Standards volume information, refer to the standard’s Document Summary page on Federal Specification TT-C-555B, Amendment No. 1, dated August 5, 1975,
the ASTM website. U.S. Government Printing Office.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6904 − 03 (2022)
FIG. 1 Dimensions of Test Box
illustrated is a simple air pressure regulator consisting of a 8. Procedure
T-tube with the leg (foot) of the tube placed in a water filled
8.1 Prepare patio blocks by using a stiff bristle brush to
beakeratadepthofslightlygreaterthan5in.Thissetupisalso
remove any loose materials.
a safety device. Any sudden increase in air pressure will be
8.2 Assure that blocks are dried and have been stored in an
vented harmlessly. The apparatus outlined above was derived
area under standard conditions of 73.5 6 3.5 °
...
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