Expansion Joints and Pre-Compressed Sealants

Single-Unit, 2-Hour, UL2079 fire and water resistant expansion joint system for floors and decks.
Click here for 3-hour DFR3



US Patent: 8,739,495
Patents Pending

Tech Data

Install Data


Guide Spec





UL/ULC Listings

en español


For Floors and Decks
Interior and open air
Traffic Durable
2-Hour Fire Rated to UL 2079
Non-Invasive Anchoring
Installed entirely from the deck or floor above--No utility lifts or holding labor required
No obstructions columns or underslab obstructions from HVAC, electrical, plumbing or mechanical materials
Eliminates the need for fire blankets and gutters
Meets the requirements of ASTM E1966, ASTM E119 and ASTM E1399
One Install Does It All--Fire-Rated, Watertight, Traffic Bearing, 100% Movement, Quiet, Non-Invasive Anchoring, UL 2079 Certified for Decks and Floors

Parking Decks
Stair Tower Perimeters
• Deck-to-Deck
• Bridge Expansion Joints
• Floors
• Stair/Elevator Tower Perimeters
• Deck-To-Wall
Interior Floors Under Joint Covers

Standard Sizes
 1/2" to 4" (12 - 100mm)

Note: Sizes under 1 1/2" (40mm) are manufactured with a single bellows. Larger sizes incorporate multiple bellows. (Above 4" (100mm), see SJS SYSTEM or contact EMSEAL)

Depth of Seal for all sizes: 4" (100mm)

Movement Capability
• Up to 100% Total (+50% and -50% of nominal supplied size)

Standard color is gray (for other colors contact EMSEAL)
Standard underside silicone color is also gray.  Alternate color coating on bottom side is available as an option--consult EMSEAL.

Product Description
EMSHIELD DFR2 is a watertight, fire-rated,
traffic-durable primary seal for repair, retrofit, and new installations of structural expansion joints in horizontal-plane applications.

EMSHIELD DFR2 eliminates the need for additional fire blankets, mineral wools, liquid sealants, cover plates, or other fire stopping materials.

Can be used alone or under any other expansion joint cover, plate or filler where depth of substrate allows.

EMSHIELD DFR2 builds on EMSEAL's track record of over 30 years of innovation in sealing structural expansion joints with impregnated foam sealants and is part of a comprehensive line of breakthrough, multi-function, structural expansion joint materials offered by EMSEAL. It is tested and certified by Underwriters Laboratories (UL), to the rigors of UL 2079 for deck and floor expansion joints.


Where UL tested listings do not meet your specific project conditions ask EMSEAL for an engineered judgment


EMSHIELD DFR2 (Deck, Fire-Rated 2-Hours)
2-hour fire-rated watertight expansion joint for use in a deck or floor with a 2-hour (or lower) fire rating. Used in deck-to-deck applications or deck-to-wall applications.

EMSEAL’s EMSHIELD DFR2 has been tested in accordance with UL 2079 in the configuration depicted in UL Systems:
 # FF-D-0075, # FF-D-1086, # FW-D-0052, #FW-D-1073, and ULC Systems: #JF130, #JF133.

EMSHIELD DFR3 (Deck, Fire-Rated 3-Hours)
3-hour fire-rated watertight expansion joint for use in a deck or floor with a 3-hour (or lower) fire rating. Used in deck-to-deck applications or deck-to-wall* applications.

EMSEAL’s EMSHIELD DFR3 has been tested in accordance with UL 2079 in the configuration depicted in UL Systems:
# FF-D-0078, # FF-D-1090,
FW-D-0053, FW-D-1075, and ULC Systems: #JF137, #JF138.

EMSHIELD WFR2 and WFR3 (Wall Fire-Rated 2 or 3-Hours) for wall and vertical rise applications is available. It can be connected to with EMSHIELD DFR2 or DFR3 using factory-fabricated Universal-90's (or custom 90's) to create a completely fire-rated horizontal and vertical system.

EMSHIELD DFR2 and DFR3 provide a watertight, clean handling, UV stable, non-staining, low-temperature-flexible, high-temperature-stable, watertight, traffic durable and fire-rated joint seal in a single installation process.

EMSHIELD DFR2 features a traffic-grade silicone sealing surface adhered to a fire-retardant impregnated foam backing and another silicone bellows on the bottom (fire) side.

Fire-retardant-impregnated foam is factory pre-coated on the traffic surface, as well as on the underside, with a traffic-grade silicone coating.  The resulting composite is then factory compressed to less than its nominal size for installation into structural or other openings. 


The system is installed into epoxy adhesive field-applied to the sides of the the joint face.  A field-injected silicone sealant band seals the bellows to the substrate. (Note: A sealant band of intumescent caulk from the underside is NOT REQUIRED enabling the installation to be done entirely from the top side).  Joins between each stick are executed using a field-applied silicone sealant band at the top of the join and an intumescent sealant coating over the remaining foam at the adjoining faces.

Features Explained

Watertight — EMSHIELD DFR2 is installed with the tensionless traffic-grade, fuel-resistant bellows facing the traffic ensuring that watertightness is achieved.

Fire-Rated — The fire-retardant-impregnated foam ensures 2-hour (DFR2) fire protection in accordance with UL-2079.

Non-Invasive Anchoring -- There are no hard metal-to-substrate connections with either EMSHIELD DFR2. 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 — The standard EMSHIELD DFR2 top surface and underside color is gray (other colors are optional).  At the designer's option, an different silicone color coating can be applied to the underside.

Joint-Size Variation —Uniform bellows appearance, and the ability to handle variations in joint size through size-switching.

Sound Attenuation -- Floors sealed with EMSEAL impregnated foam sealants offer exceptional acoustic dampening and feature sound transmission coefficients virtually equal to that of the solid slab.

Performance Limitations:

DFR2 is capable of +50% and -50% movement for nominal material up to 4”, for vehicular and pedestrian trafficked conditions.  For applications in larger joints (3-inches and above) where full extension movement and  high point load, small-diameter-wheel conditions (shopping cart, luggage carts, etc.), designer should consider use of a cover plate over the DFR2 or instead specify the SJS-FR system.

Factory-Fabricated Terminations and Transition

Universal-90 Upturn Termination

Universal-90 Flipped-Over as Downturn Termination

Universal-90 Upturn Transition

Universal-90 Flipped-Over as Downturn Transition


Universal 90's
(US Patent 9,200,437
Patent Pending)

U-90's are factory-made transition pieces that ensure continuity-of-seal where expansion joints change plane or direction.

DFR2 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.

Consult EMSEAL.

(More on Universal-90's



Supplied DFR2 Product  Nominal Material Size Depth of
Length Code ( = Joint Size at Mean T) Seal
6.56 LF (2M)Stick DFR2-0050 1/2"  (12mm) 4" (100mm)
DFR2-0065 5/8"  (15mm)
DFR2-0075 3/4"  (20mm)
DFR2-0100 1"  (25mm)
DFR2-0125 1 1/4" (30mm)
DFR2-0150 1 1/2" (40mm)
DFR2-0175 1 3/4" (45mm)
DFR2-0200 2" (50mm)
DFR2-0225 2 1/4" (55mm)
DFR2-0250 2 1/2" (60mm)
DFR2-0275 2 3/4" (70mm)
DFR2-0300 3" (75mm)
DFR2-0325 3 1/4" (80mm)
DFR2-0350 3 1/2" (90mm)
DFR2-0375 3 3/4" (95mm)
DFR2-0400 4" (100mm)

Testing and Standards

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. 

Where UL tested listings do not meet your specific project conditions ask EMSEAL for an engineered judgment

Engineered Judgments are based on our actual UL 2079 test data extrapolated using Finite Element Analysis modeling.

EMSHIELD DFR2 has been tested and certified under UL 2079.

EMSHIELD DFR2 meets 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.

Design/System/Construction/Assembly Usage
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.



EMSEAL JOINT SYSTEMS LTD. 25 Bridle Lane, Westborough, MA 01581
EMSEAL LLC. 120 Carrier Drive, Toronto, ON M9W 5R1



1-800-526-8365 -- 508-836-0280 --  techinfo@emseal.com -- Fax: 508-836-0281

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