UL 2079 For
Concrete, Masonry and Gypsum Walls
Can be used alone or behind any joint covers
• Exterior walls
• Suitable to all building types
• Stadiums and arenas
• Military facilities
• Schools, colleges, and universities
(12 - 150mm)
Note: Sizes under 1 1/2"
are manufactured with a single bellows. Larger sizes incorporate multiple
Product Depth for
all sizes is 4-inches
Movement Capability • Total 100% (+50% and -50%) of nominal supplied size.
EMSHIELD WFR2 is a watertight, fire-rated, dual-sided primary
seal for both new and retrofit structural expansion joints in wall
dual-sided silicone sealing surfaces adhered to a fire-retardant
impregnated foam backing. Both sides of the
expansion joint are waterproof and fire-rated.
As a single unit fire-rated expansion joint EMSHIELD
eliminates the need for additional fire stops at the joint gap thereby
eliminating the need for multiple separate products that perform the roles
of sealing, bridging and fire-rating
joints--with EMSHIELD WFR2 one install does it all.
Can be used alone or under any other expansion joint cover, plate or
filler where depth of substrate allows.
EMSHIELD WFR2 provides a
handling, UV stable, non-staining, low-temperature-flexible,
high-temperature-stable, watertight, energy-efficient and fire-rated joint
in a single installation process.
Fire / Energy /
Sound / Movement
EMSHIELD WFR2(Wall, Fire-Rated
2-Hours) is part of the growing EMSHIELD family of fire-rated expansion joints being released by EMSEAL.
WFR2 can be joined
with EMSHIELD DFR2 and DFR3, EMSEAL's horizontal deck
fire-rated expansion joints, to create a continuous, fire-rated watertight expansion
system in both planes as well as at factory-fabricated or field-executed direction changes
between the horizontal and vertical planes.
EMSHIELD WFR2 builds on EMSEAL's track record of over 30
years of innovation in sealing structural expansion joints with impregnated
foam sealants and expands the comprehensive line of
breakthrough, multi-function, structural expansion joint materials being
released by EMSEAL. It has been tested and certified by Underwriters Laboratories (UL),
to the rigors of UL 2079 and is
manufactured under UL's Follow-Up Service--providing the assurance that the
material supplied on your project is manufactured to the same standards of
the product that was submitted for testing. ONLY FIRE-RATED EXPANSION
JOINTS THAT HAVE BEEN UL 2079 TESTED AND CERTIFIED SHOULD BE USED IN A
Watertight — EMSHIELD
WFR2 features EMSEAL's signature tensionless, water resistant, silicone bellows.
Fire-Rated — The
fire-retardant-impregnated foam and intumescent bellows on
both the interior and exterior faces work together to ensure 2-hour fire protection in accordance
Non-Invasive Anchoring — There are no hard metal-to-substrate
connections with EMSHIELD WFR2. This includes embedded pins, anchors,
screws, bolts or tracks, trays or rails, flanges or coverplates. The
system is locked to the joint faces by means of the 1) backpressure of
the foam; 2) the epoxy adhesive, and 3) the injected sealant bands at
the joint face.
Versatility — EMSHIELD WFR2's visible surfaces are available in
standard colors (other colors are optional). Each side can be a separate
color. This allows for color
coordination with surrounding wall colors and in keeping with the structure's
Joint-Size Variation —Uniform bellows appearance, and the
ability to handle variations in joint size through size-switching.
Energy Efficiency -- EMSEAL's foam technology also acts an efficient
thermal barrier. This means that indoor air quality and HVAC
balance can be controlled while insulating the interior space from hot
and cold exterior conditions. The non-metallic, non-invasive
anchoring means that with WFR2 there are no thermal breaks introduced at
structural or other joint openings.
Sound Attenuation -- Walls
sealed with EMSEAL impregnated foam sealants offer exceptional acoustic dampening and
transmission coefficients virtually equal to that of the solid wall. In a
wall with a STC 68 rating, WFR2 was tested to have a STC 62 rating
thereby maintaining the sound suppressing capabilities of the host wall.
It also posted an OITC 52 rating.
A fire-retardant-impregnated foam is
factory pre-coated on both inside and outside faces with an intumescent fire-proofing
material. Each side is then coated with a silicone coating.
This silicone coating is offered in a choice of 26 standard (and additional
custom) colors to coordinate with the surrounding wall colors. The resulting composite is then factory compressed to less than its nominal
size for installation into structural or other openings.
Because WFR2 is coated on both sides it is an effective
fire-barrier from either side in interior demising walls or partitions.
Installed in exterior joints WFR2 can help to prevent wrap-around fires that
exit the building through joint openings, wrap around the outside of
the building and reenter the building through the joint at the next floor
The system is installed into epoxy adhesive field-applied to the
joint faces. Joins between each stick
are executed using a field-applied silicone sealant band at bellows join and an intumescent sealant coating over the remaining foam at the adjoining faces.
The installation of a silicone bead
to the edges of the weather facing bellows ensures a watertight seal.
Sealant beads are optional in interior applications.
U-90's are factory-made transition pieces that ensure continuity-of-seal where expansion joints change plane or direction.
WFR2 is manufactured in straight-run sticks which can be joined in the field to EMSEAL’s patented and patent-pending "Universal-90" transitions.
These factory-fabricated single-piece 90-degree units have a 12-inch long leg and a 6-inch vertical piece on each side of the elbow. Universal-90 transition are symmetrically coated on both faces allowing them to be installed as an inside corner or as an outside corner.
In addition to guaranteeing watertightness, EMSEAL’s "Universal-90's" allow for much faster and secure installation by eliminating field cutting or notching and bending, at angles.
Substrates must be solid, sound, parallel and plumb.
Note: Overall fire-rating of a wall assembly is dependent on the fire-rated characteristics of the supporting
and adjacent wall design by others.
Nominal Material Size
Depth of Seal
( = Joint Size at Mean T)
6.56 LF (2M)Stick
Only UL 2079 tests
expansion joint movement (cycling expansion and contraction) during
fire-rating testing. This is crucial because expansion joints move.
Non-UL tests do not combine movement cycling and fire blocking --- therefore do
not adequately test the integrity of the expansion joint in simulated
real world conditions. Demand UL/ULC UL 2079
testing and certification in any life-safety application where an
expansion joint needs to be fire-rated.
EMSHIELD WFR2 and WFR3 have been tested and certified under
UL 2079 encompassing manufacturing certification, Class II and Class III movement cycling, fire
test, and hose stream test.
EMSHIELD WFR2 and
WFR3 meet the requirements of ASTM
E1966, ASTM E119 and ASTM E1399.
UL 2079, like ASTM E1966, was developed to
encompass the fire testing of ASTM E119 and the movement cycling regime
of ASTM E1399.
This material has been tested to UL/ULC 2079 and is manufactured under
UL’s Follow-Up Service. The material is being supplied as a fire-rated
component of a wall or floor assembly. It has been tested to UL 2079 in
assemblies as depicted in EMSEAL’s various listings in the UL
Online Certifications Directory. Use of this material in assembly
configurations other than depicted in the named UL listings will not
encumber or lower the resistance of the deck or wall assembly but is
done so at the designers’ discretion and responsibility for designing
substrates as part of a fire rated assembly that meet applicable
standards for the project. Similarly, the published information in the
UL Listings cannot always address every construction nuance encountered
in the field. Authorities Having Jurisdiction should be consulted in all
cases as to the particular requirements covering the installation and
use of UL Listed or Classified products or materials. Authorities Having
Jurisdiction should be consulted before construction to ensure that
specific adjacent substrates and assemblies are detailed and constructed
to meet local fire-rating requirements.
video summarizes the rigors of the UL 2079 testing process for EMSHIELD
EMSEAL JOINT SYSTEMS LTD. 25 Bridle Lane, Westborough, MA 01581 EMSEAL LLC. 120 Carrier Drive, Toronto, ON M9W 5R1