EMSEAL’s EMSHIELD WFR2 and SecuritySeal SSW2 are single-install expansion joints with unequaled performance. They are first of their kind wall expansion joints that serve every function required of structural expansion joints in a single product. These functions include:
Relevant to any exterior wall design, ASTM tests E-283, E330, and E331 define the performance ability of a wall assembly in regard to air leakage, water penetration, and static air pressure difference (wind gust loading).
All wall and window assemblies contain joints--either to seal the assembly to the rest of the wall or to seal movement joints within the assembly.
It makes sense then to have data on how the building sealant or expansion joint material that seal these penetrations will perform. Why not, then, test the expansion joint sealant to the same three tests?
The results provide performance data that ensures that the sealant does not compromise the performance of the wall assembly.
|Figure 1: Test pressure chamber showing pressure/vacuum pipe and WFR2 at max joint opening (7/12"). During ASTM E-331, a vacuum is pulled on the airspace in front of the material while water is sprayed from behind. The material showed no leaks. In ASTM E-330, the air space is both evacuated and pressurized and deflection of the samples is measured on the back side. In all cases the deflection measure was so small as to be within the margin of error of the instrumentation. This means that at both negative and positive pressures beyond hurricane strength, the WFR2 expansion joint sealant does not deflect.||
More than 25
years ago, EMSEAL applied this standard to its precompressed joint sealants
BACKERSEAL. More recently we had an
independent laboratory run the
same tests on SEISMIC COLORSEAL
In short, EMSHIELD WFR2 (and by extension SecuritySeal SSW2 by virtue of its identical build except that is features pick-resistant polyurethane bellows instead of silicone), has the following capabilities:
permeability that is 2 1/2-times lower than ABAA requirements
2) No water leakage at well beyond hurricane force, wind driven rain--500, 1000, or 5000 Pascals (ASTM E331-00 (2009)
3) Resists wind loading well-beyond hurricane-force with essentially no deflection at both positive and negative pressures up to 4854 Pascals--equal to 200 mph winds (ASTM E330-02-procedure A)
You can download a .pdf of the independent test report or read it below:
EVALUATION OF EMSEAL CORPORATION’S “WFR2 (6" EXPANSION JOINT MATERIAL FOR AIR LEAKAGE, WATER PENETRATION RESISTANCE AND STRUCTURAL PERFORMANCE
Report to: Emseal Corporation
Attention: Mr. Bill Witherspoon
At the request of Emseal Corporation, Exova was retained to conduct a performance evaluation of the air leakage resistance, water penetration resistance and the structural performance properties of a specimen identified as “ expansion joint material as outlined in Exova Proposal Number 09-006-9188.
Upon receipt, the specimen was assigned the following Exova Specimen Number:
Note: the specimen was tested at its maximum movement capability of +25% or 7.5" expanded.
Note: SI Units are the Primary Unit of Measure
As outlined in Exova proposal number 09-006-9188, a steel test fixture was constructed which comprised of a 191 mm (wide) x 152 mm (deep) x 1000 mm (long) gap for the installation of the specimen. A fabrication detail of the test fixture is located in Figure 1.
The expansion joint material (Exova Specimen: 09-06-M0446) was installed in the test fixture’s gap by a representative from Emseal at Exova’s Mississauga testing facility on November 2, 2009. Photographs of the specimen’s installation are located in Appendix A.
Upon installation, the specimen was allowed to cure in the test fixture for five (5) days minimum at ambient laboratory conditions prior to any testing.
Testing was conducted on January 11, 2010 and the following testing protocol was requested by Emseal:
i. Initial air leakage measurements taken at 25, 50, 75,
100, 150, 250 & 300 Pa (ASTM E238); Infiltration case.
Note: Prior to testing the actual specimen leakage, extraneous air leakage measurements were taken at successive pressures as per ASTM E283-04
* Air Leakage measurements at all differential pressures listed above were below 2 SCCM. Based on the perimeter (crack) length and square area the air leakage measured is less than 0.000014 L/s·m or 0.00017 L/(s·m2).
* Note: To ensure the worst case, testing at 5000 Pa was conducted after completion of ASTM E-330-02 structural testing
Notes: '-' denotes
exfiltration airflow direction (simulated negative wind loading)
Last Modified: May 06, 2013