
UL 2079 is the benchmark for cycling and fire testing fire-rated expansion joints. Passing it is no easy feat. Fire rated expansion joints face a tough test
What is UL 2079 certification?
UL 2079 testing encompasses the burn requirements of ASTM E119 and the joint cycling requirements of ASTM E1399 in the same way that ASTM E1966 does. However, UL certification goes beyond just testing.
What are the anansi/ul2079 Assembly ratings?
ANSI/UL2079 CAN/ULC S115 Assembly Rating — 2 Hr F Rating — 2 Hr Nominal Joint Width — 1 in.(25 mm) FT Rating — 2 Hr Class II Movement Capabilities — 25% Compression or Extension FH Rating — 2 Hr FTH Rating — 2 Hr Nominal Joint Width — 1 in. (25 mm) Class II Movement Capabilities—25% Compression or Extension
What size thermocouple pads are used in UL 2079?
The thermocouples used to measure temperature on the wall and the joint assembly are applied to the assembly with 2” x 2” thermocouple pads. The previous version of UL 2079 did not allow for any modification of the thermocouple pad to allow it to be installed within the joint and directly against the firestop material (See Fig. 1).
Are your STI Joint Systems UL 2079 test compliant?
All previous STI joint systems utilizing TTG are in full compliance with the new UL 2079 test standard 5th edition requirements. As a result of the standard change some manufacturers claim their systems did not require any alteration or additional material to comply.
See more

What is ASTM E1966?
ASTM E1966 : Standard Test Method for Fire-Resistive Joint Systems.
What is ASTM E119?
What is ASTM E119? ASTM E119 (UL 263): tests the fire resistance of an assembly. This test evaluates the duration for which building construction materials and assemblies can either contain a fire, retain structural integrity, or both.
What does 1 hour fire rating mean?
A “one-hour” fire rating is given to an assembly consisting of various building materials that can resist the exposure of a standardized fire exposure for one hour.
What is a 1 hour fire rated wall?
According to the Engineered Wood Association, a one-hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures, and support its full load, for at least one hour after the fire begins.
What is ASTM E11?
The ASTM Committee E11 on Quality & Statistics promotes the appropriate use of principles, statistics and quality control methods related to materials production and use. The committee has jurisdiction over 29 approved standards and is mandated to develop, produce and maintain standards that enhance quality assurance.
What is ASTM E136?
Standard: ASTM E136 - Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C. Certification Required: The International Building Code (IBC) and International Residential Code (IRC) prescribes this test for materials that are required to be non-combustible.
What is ASTM E108?
Scope: ASTM E108 is a fire-test-response standard that is used to evaluate roof coverings in both residential and commercial roofing applications for materials used on combustible or noncombustible decks. The evaluation simulates the fire originating outside the building accompanied by wind conditions.
What is UL 10B?
UL 10B is the UL Standard for Safety Fire Tests of Door Assemblies. These fire tests apply to door assemblies of various materials and types of construction for use in wall openings to retard the passage of fire and evaluate the ability of a door assembly to remain in an opening during a predetermined test exposure.
What Are UL 1479 Standards?
UL standards require successful testing of all approved through-penetration firestops designed for use in breaches in firewalls or floor-ceiling assemblies, or both.
Scope of UL 1479 Testing
1.1 These requirements cover through-penetration firestops of various materials and construction that are intended for use in openings in fire-resistant wall, floor or floor-ceiling assemblies, and membrane-type penetration firestops of various materials and construction that are intended for use in openings in fire-resistive wall assemblies.
