ASTM D6904-03(2013)

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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2013
• ICS: 91.080.30 - Masonry
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.47 - Concrete, Stone and Masonry Treatments

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D6904 − 03 (Reapproved 2013)
Standard Practice for
Resistance to Wind-Driven Rain for Exterior Coatings
1
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 apparatus and exposed for 24 h to continuous water spray and
air pressure or as agreed upon between manufacturer and
1.1 This practice is for the evaluation of the ability of
supplier. Upon completion of the exposure, the blocks are
coatings to resist the passage of water through masonry block
removed, evaluated for visible water leaks or weight gain, or
when exposed to water spray and air pressure.
both.
1.2 The values stated in inch-pound units are to be regarded
4. Significance and Use
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
4.1 Thispracticeismeanttosimulatetheabilityofacoating
and are not considered standard.
system applied to a masonry block to withstand exposure to
continuous water spray (rain) and a dynamic pressure equiva-
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the lent to a 98 mph wind velocity without exhibiting water leaks
or weight gain, or both.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Apparatus
bility of regulatory limitations prior to use.
5.1 The testing box is assembled from transparent plastic
1
2. Referenced Documents
panels ⁄2-in. thick and typically of the dimensions as shown in
2
Fig. 1. Three openings on the side, 6 by 12 in., are provided so
2.1 ASTM Standards:
that the coated side of the three blocks may be positioned for
D1475 Test Method For Density of Liquid Coatings, Inks,
test. The openings on the top of the apparatus for the air inlet
and Related Products
and manometer connection shall not be less than 3 in. apart to
D3924 Specification for Environment for Conditioning and
make certain that air inlet turbulence will not effect the
Testing Paint, Varnish, Lacquer, and Related Materials
manometer readings. A spray tube shall be constructed from
D3925 Practice for Sampling Liquid Paints and Related
4
1
⁄2-in. plastic tubing with three fish-tail nozzles. Attachment to
Pigmented Coatings
the testing box includes a water-filled U-tube manometer,
2.2 Federal Standard:
source of compressed air, clamps and angle irons for securely
TT-C-555B Coating, Textured (For Interior and Exterior
3
fastening the test panels to the box, and a drain outlet. Also,
Masonry Surfaces)
illustrated is a simple air pressure regulator consisting of a
3. Summary of Practice
T-tube with the leg (foot) of the tube placed in a water filled
beakeratadepthofslightlygreaterthan5in.Thissetupisalso
3.1 Typically 8 by 16 by 2 in. masonry blocks are coated
a safety device. Any sudden increase in air pressure will be
with block filler and then coated with the masonry paint and
vented harmlessly. The apparatus outlined above was derived
allowed to cure. The coated blocks are then secured to a test
from that shown in Federal Specification TT-C-555B. Appara-
tus and substrates of other dimensions can be used as agreed
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
upon between manufacturer and supplier. The duration of
Related Coatings, Materials, and Applications and is the direct responsibility of
exposure and water pressure used will also be agreed upon
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
Current edition approved June 1, 2013. Published June 2013. Originally between manufacturer and user.
approved in 2003. Last previous edition approved in 2007 as D6904 – 03 (2007).
DOI: 10.1520/D6904-03R13. 6. Reagents and Materials
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Three 8 by 16 by 2 in. Patio Blocks.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
6.2 Stiff Bristle Brush.
the ASTM website.
3
AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
4
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:// Federal Specification TT-C-555B, Amendment No. 1, dated August 5, 1975,
www.access.gpo.gov. U.S. Government Printing Office.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6904 − 03 (2
...