ASTM E2570/E2570M-07(2019)

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: E2570/E2570M − 07 (Reapproved 2019)
Standard Test Methods for
Evaluating Water-Resistive Barrier (WRB) Coatings Used
under Exterior Insulation and Finish Systems (EIFS) or EIFS
with Drainage
This standard is issued under the fixed designation E2570/E2570M; 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 Sandwich Constructions
D2247 Practice for Testing Water Resistance of Coatings in
1.1 These test methods apply to trowel, roller, or spray
100 % Relative Humidity
applied Water-resistive barrier (WRB) coatings that are applied
D2898 Practice for Accelerated Weathering of Fire-
over exterior sheathing prior to application of EIFS or EIFS
Retardant-Treated Wood for Fire Testing
with drainage wall claddings.
E72 Test Methods of Conducting Strength Tests of Panels
1.2 Test methods for in place wall system and cladding
for Building Construction
related to tests such as fire resistance, wind load capability, air
E96/E96M Test Methods for Gravimetric Determination of
barrier performance, and so forth. should also be considered
Water Vapor Transmission Rate of Materials
but are outside the scope of this document.
E330/E330M Test Method for Structural Performance of
1.3 The values stated in either SI units or inch-pound units Exterior Windows, Doors, Skylights and Curtain Walls by
Uniform Static Air Pressure Difference
are to be regarded separately as standard. The values stated in
each system are not necessarily exact equivalents; therefore, to E331 Test Method for Water Penetration of Exterior
Windows, Skylights, Doors, and Curtain Walls by Uni-
ensure conformance with the standard, each system shall be
used independently of the other, and values from the two form Static Air Pressure Difference
E631 Terminology of Building Constructions
systems shall not be combined.
E1233/E1233M Test Method for Structural Performance of
1.4 This standard does not purport to address all of the
Exterior Windows, Doors, Skylights, and Curtain Walls by
safety concerns, if any, associated with its use. It is the
Cyclic Air Pressure Differential
responsibility of the user of this standard to establish appro-
E2110 Terminology for Exterior Insulation and Finish Sys-
priate safety, health, and environmental practices and deter-
tems (EIFS)
mine the applicability of regulatory limitations prior to use.
E2134/E2134M Test Method for Evaluating the Tensile-
1.5 This international standard was developed in accor-
Adhesion Performance of an Exterior Insulation and
dance with internationally recognized principles on standard-
Finish System (EIFS)
ization established in the Decision on Principles for the
E2485/E2485M Test Method for Freeze/Thaw Resistance of
Development of International Standards, Guides and Recom-
Exterior Insulation and Finish Systems (EIFS) and Water
mendations issued by the World Trade Organization Technical
Resistive Barrier Coatings
Barriers to Trade (TBT) Committee.
2.2 AATCC Standard:
AATCC 127 Water Resistance: Hydrostatic Pressure Test
2. Referenced Documents
2.1 ASTM Standards: 3. Terminology
C297/C297M Test Method for Flatwise Tensile Strength of
3.1 Definitions related to EIFS may be found in Terminol-
ogy E2110 and general terms in Terminology E631.
This test method is under the jurisdiction of ASTM Committee E06 on
4. Significance and Use
Performance of Buildings and is the direct responsibility of Subcommittee E06.58
4.1 This series of test methods provides a means to evaluate
on Exterior Insulation and Finish Systems (EIFS).
Current edition approved April 1, 2019. Published April 2019. Originally performance of the water-resistive barrier coating when sub-
e1
approved in 2007. Last previous edition approved in 2014 as E2570–07 (2014) .
jected to various physical and environmental conditions. The
DOI: 10.1520/E2570_E2570M-07R19.
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 Available from American Association of Textile Chemists and Colorists
Standards volume information, refer to the standard’s Document Summary page on (AATCC), P.O. Box 12215, Research Triangle Park, NC 27709-2215, http://
the ASTM website. www.aatcc.org.
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E2570/E2570M − 07 (2019)
water-resistive barrier coating is applied between the EIFS and 5.5.1 Construct one sample, a minimum of 2438 by 2438
substrate in an EIFS-clad wall assembly and is intended to mm [8 by 8 ft] with either steel studs or 2 by 4 wood studs
provide additional protection to the building and its contents spaced a minimum of 406 mm [16 in.] oc. Attach the sheathing
from incidental moisture intrusion that may occur through the substrate to the framing and include 3.2 mm [ ⁄8 in.] wide
building envelope. Although protected from direct weather vertical and horizontal substrate joints. Flashing shall also be
exposure after the EIFS is installed, the coating must be included in the sample preparation to ensure that the interface
durable and weather resistant as it is subjected to various of the water-resistive barrier coating and flashing will not be
environmental conditions prior to application of the EIFS as affected by various loading conditions. Apply the joint
well as while the system is in service. treatments, if applicable, and water-resistive barrier coating to
the sheathing and cured in accordance with the manufacturer’s
5. Test Specimens
recommendations. The sheathing used in the test shall be the
5.1 Tensile Bond:
least shear-resistant sheathing material to which application of
5.1.1 Prepare five samples for each sheathing substrate, a
the water- resistive barrier coating is proposed for application.
minimum of 152 by 152 mm [6 by 6 in.], that consists of two
5.6 Weathering (Ultraviolet Light Exposure, Wet/Dry
sheathing sections assembled with a 3.2 mm [ ⁄8 in.] wide joint.
Cycling, and Hydrostatic Exposure):
Apply the joint treatment, if applicable, and water-resistive
5.6.1 Prepare five samples, a minimum of 102 by 152 mm
barrier coating in accordance with the manufacturer’s recom-
[4 by 6 in.] containing a 6.4 mm [ ⁄4 in.] wide joint for each
mended instructions.
substrate. Apply the joint treatment, if applicable, and the
5.1.2 Test where the water resistive barrier is a system
water-resistive barrier coating to the substrate according to the
composed of multiple products that overlap, the bond between
manufacturer’s recommended application instructions. Sheath-
water resistive barrier products.
ing specimens shall consist of two sheathing sections as-
5.1.3 Prepare five specimens for each flashing material for
sembled with the 6.4 mm [ ⁄4 in.] wide joint. Seal the sides of
which recognition is sought, a minimum of 51 by 51 mm [2 by
the samples with material impervious to water that need not be
2 in.] by applying the water-resistive barrier coating, and the
the water resistive barrier coating.
flashing treatment, to the flashing material.
6. Apparatus
5.2 Freeze Thaw:
5.2.1 Construct five samples for each sheathing substrate, a
6.1 The description of apparatus in this section is general in
minimum of 152 by 152 mm [6 by 6 in.] that consists of two
nature consequently any set up capable of performing the test
sheathing sections assembled with a 3.2 mm [ ⁄8 in.] wide joint.
is acceptable.
Apply the joint treatment, if applicable, and the water-resistive
6.2 Tensile Bond:
barrier coating in accordance with the manufacturer’s recom-
6.2.1 The apparatus shall be capable of subjecting the
mended instructions. The back and sides of the specimens shall
specimen uniformly to test conditions described in Test
be sealed with an impervious material that need not be the
Method C297/C297M or Test Method E2134/E2134M.
coating. Specimens shall be representative of those used in
actual construction. 6.3 Freeze Thaw:
6.3.1 The apparatus shall be capable of subjecting specimen
5.3 Water Resistance:
uniformly to test conditions and cycles described in Test
5.3.1 Prepare three samples, a minimum of 102 by 152 mm
Method E2485/E2485M.
[4 by 6 in.], and containing a 6.4 mm [ ⁄4 in.] wide joint for
each substrate by applying the joint treatment, if applicable, 6.4 Water Resistance:
and the water-resistive barrier coating to the substrate accord- 6.4.1 The apparatus shall be capable of subjecting the
ing to the manufacturer’s recommended application instruc- specimen uniformly to test conditions described in Practice
D2247 for 14 days.
tions. The back and sides of the samples shall be sealed with
material impervious to water that need not be the water
6.5 Water Vapor Transmission:
resistive barrier coating. Specimens shall be representative of
6.5.1 The apparatus shall be capable of subjecting the
those used in actual construction.
specimen uniformly to test conditions described in Test Meth-
5.4 Water Vapor Transmission: ods E72 and 8.4.1 of these test methods.
5.4.1 Prepare three samples, a minimum of 70 mm [2 ⁄4 in.]
6.6 Durability (Transverse Load, Racking, Environmental
diameter of the water-resistive barrier coating by applying the
Conditioning, and Water Penetration):
water-resistive barrier coating, at the recommended thickness,
6.6.1 Transverse Load:
to a non-adhesive surface. After curing for the time recom-
6.6.1.1 The apparatus shall be capable of subjecting the
mended by the manufacturer, the coating is removed from the
specimen uniformly to test conditions described in Test
non-adhesive surface and the average thickness is determined
Method E1233/E1233M and 8.5.1.1 of these test methods.
from the material density, area, and weight or by using a
6.6.2 Racking:
micrometer or calipers to the nearest 0.025 mm [0.001 in.].
6.6.2.1 The apparatus shall be capable of subjecting the
5.5 Durability (Transverse Load, Racking, Environmental specimen uniformly to test conditions described in Test Meth-
Conditioning, and Water Penetration): ods E72 and 8.5.2.1 of these test methods.
E2570/E2570M − 07 (2019)
6.6.3 Environmental Conditioning: 8.5.1.2 Proceed with 8.5.2 if there is no cracking observed
6.6.3.1 The apparatus for the water spray shall be capable of through visual examination of the water-resistive barrier coat-
ing within the field of the panel, at substrate joints and at the
uniformly wetting the entire panel surface. The apparatus for
radiant heat shall be capable of producing conditions described flashing interface.
in 8.5.3.1 of these test methods. 8.5.2 Racking:
8.5.2.1 Conduct test on the same test specimen as was tested
6.6.4 Water Penetration:
in 8.5.1. Apply load in accordance with Test Methods E72 with
6.6.4.1 The apparatus shall be capable of subjecting the
or without hold downs. Load shall be applied until ⁄2 in. net
specimen uniformly to test conditions described in Test
deflection without hold downs or 3.2 mm [ ⁄8 in.] net deflection
Method E331 and 8.5.4.1 of these test methods.
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