Expansion Joints and Pre-Compressed Sealants
Fire-Rated, Watertight, Seismic and Large-Gap Joint System For
Parking Decks, Car Parks, Stadiums, Floors
Built-in, 1 or 2-hour fire-rating
UL 2079 certified
the requirements of ASTM E1966, ASTM E119
and ASTM E1399
Installs entirely from deck or floor above
No utility lifts or holding labor required
No fire blankets or gutters needed
No obstructions at columns or under-slab obstructions from HVAC,
Installs rapidly in new or retrofit conditions
Fire-rated concrete decks and
• mall bridge
4" to 10"
(100 - 250mm)
100% Total (+50% and -50% of nominal supplied size.)
• Standard cover plate is aluminum with ADA-compliant,
flint-blasted finish. Stainless steel also available.
• Other finishes by request
With SJS-FR One Install Does It All--Fire-Rated,
Watertight, Traffic Bearing, 100% Movement, Quiet, Non-Invasive
Anchoring, UL 2079 Certified for Decks and Floors
• SJS-FR1 (1-hour rated) and SJS-FR2 (2-hour rated) are designed to provide a watertight, fire-rated,
trafficable joint system in 4-inch
joint openings, in decks including parking decks, stadium concourses,
stadium treads and risers, and other horizontal plane applications in
• The SJS-FR SYSTEM features all of the performance advantages of the
standard SJS SYSTEM and adds the
significant advancement of a built-in,
• The SJS-FR SYSTEM is two horizontal fire-rated joints pre-assembled in
parallel adjacent to an extruded composite spline. The spline is designed as
the receptor for the attachment of traffic plates that bear vehicle and
• SJS-FR has been tested and certified by Underwriters Laboratories
(UL/ULC), to the rigors of UL 2079 for both 1-hour (SJS-FR1) and 2-hour
• The silicone-and-impregnated-foam hybrid components act to anchor the
system, ensure watertightness, absorb sound, and dampen vibration.
• Fire-retardant-impregnated foam is factory pre-coated on the underside
with an intumescent fireproofing material. The traffic surface and the
bottom both receive a watertight silicone outer coating. The resulting
composite is then factory compressed to less than its nominal size for
installation into structural or other openings.
• The factory-assembled spline, bellows, and foam, are shipped with
factory-attached installation hanger-bars.
• Epoxy gel adhesive is field-applied to the faces of the joint opening.
• The sealing assembly is lowered into the joint gap where it
self-expands into the epoxy adhesive.
• Consecutive lengths are joined through the field-application of
manufacturer-supplied, low-modulus, high-movement silicone to the spline and
intersecting bellows surfaces. The fire-retardant foam ends are coated with
a full layer of intumescent sealant.
• Friction fit alignment pins prevent the joins from moving during
• A field-applied silicone sealant band is injected at the bellows to
joint substrate interface to complete the waterproofing.
• The SJS-FR joint-sealing assembly installation hanger bars are removed
sequentially as coverplates are lowered over the joint and screwed to the
center spline, completing the installation.
Specify the SJS-FR
- Comply with life-safety requirements
- Eliminate leaks and handle traffic and point loads at large
structural expansion joints
- Reduce noise
- Eliminate hard connections to concrete
- Prevent deterioration of concrete decks
- Reduce tenant complaints
- Reduce maintenance costs
- SJS-FR1 and SJS-FR2 have been tested and certified by Underwriters Laboratories (UL) to the
rigors of UL 2079.
UL 2079, like ASTM E1966,
was developed to encompass the fire testing of ASTM E119 and the
movement cycling regime of ASTM E1399.
SJS-FR meets the requirements of
ASTM E1966, ASTM E119 and ASTM E1399.
As a single unit fire-rated expansion joint it
eliminates the need for additional fire stops or fire blankets or barriers at the joint gap thereby
eliminating the need for multiple products to perform the roles of sealing,
bridging and fire-rating joints.
EMSHIELD SJS-FR1 has been tested in
accordance with UL 2079 in the configurations depicted in UL Systems
and ULC System
JF140. EMSHIELD SJS-FR2 has also been tested and certified in
FF-D-2015 and ULC System
link for all EMSEAL UL and ULC Listings).
Where UL tested listings do not meet your
specific project conditions
EMSEAL for an engineered judgment.
Watertight – The tensionless silicone bellows are
installed flush to the mounting height of the system and just below the
cover plate ensuring watertightness at the traffic surface. This
eliminates the need for ineffective moisture barriers and secondary
Sound Attenuation – The flanking impregnated foam and silicone
hybrid dampens sound and
shock effectively. When installed over EMSEAL-supplied elastomeric
nosing material, the result is arguably the quietest watertight
cover plate system available.
(Click this link to see and hear the SJS difference.)
Rapid Installation – Using non-invasive anchoring the
eliminates hard metal-to-concrete connections as well as intrusive pins,
anchors, screws, bolts or tracks, trays or rails. The system is locked
to the joint faces by the backpressure of the foam and an epoxy
adhesive, and by the weight of the assembly.
(Watch the video of installation
in a parking deck
or a stadium)
because SJS-FR1 installs entirely from the top of the slab, there is no
need for utility lifts and extra holding labor. Furthermore, a
continuous run of SJS-FR1, and therefore continuity of fire protection
and complete compartmentalization, is not complicated by working around
the installation of other under-slab systems like plumbing, electrical,
mechanical and HVAC components.
Self-Locating Cover Plate Screws – The center spline is a
continuous receptor for the coverplate screws that are self-tapped into
the anchor channel. This dramatically reduces the installation-related
problems of locating self-centering, sliding ball devices and
pantographs. The probability of screws being left out is eliminated
ensuring proper anchoring.
Vibration-Dampened Screws – Vibration in systems that rely on metal-to-metal
connections and contact points is the main cause of screw loosening. SJS
by EMSEAL minimizes vibration through the dampening action of the
massive and continuous springs of impregnated foam along the entire
length of the joint. In addition, 30 pounds of force is required to
loosen the screws offering excellent screw tightness without the need
for thread-lock compounds.
Plate Support – Concrete in new and retrofit applications is
inevitably uneven across and along the joint. The SJS-FR is installed over
a leveling-bed of EMSEAL-supplied elastomeric nosing material providing
the ability to fine-tune the support of cover plate sections
reducing rocking and noise caused by unleveled plates. Systems that
attach or utilize intrusive extruded rails to receive sliding ball and
socket devices cannot be adjusted to eliminate unevenness across and
down the length of the joint.
Continuity of Seal
– All EMSEAL expansion joint systems feature
continuity of seal
changes in plane and direction –– an essential performance
differentiator. Fabricated transitions
from deck to wall, at curbs, sidewalks, parapets, tees, and crosses are
available with the SJS-FR.
Analysis (FEA) Compiled Safety Factors – Prior to field trials, the
SJS by EMSEAL was modeled using FEA to determine the suitability of
design to worst case possible parking deck loads. Under the scenario of
a 4,000 lb vehicle skidding across the joint system to full stop once
past the cover plate, FEA modeling
predicted lateral displacement of the cover plate of less than 3/4-inches
(19mm) and safety factors in key components as follows:
Traffic Plate - 5; Screws - 11; Spline Pins - 10; Center Spline - 7
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