See the UL Classification document, rating and rating definition for each of our UNIQUE Fire Stop Products systems. All have been tested to UL 1479 standards.

The UL 1479 tests required by Underwriters Laboratories determine the ability of a firestop system to stop the spread of fire, smoke, and water through a fire-rated barrier in the event of a fire and for how long a period of time.

These model codes provide fire and life-safety for both building occupants and emergency first responders during fire emergency operations.

Our in-house lab conducts firestop testing in accordance with ASTM E814 / UL 1479 for through-penetration firestop systems and ASTM E1966 / UL 2079 for construction-joint firestop systems. That means you can trust the F-rating and T-rating for each Hilti firestop system assembly.

Jun 29, 2021 · The standard tests ASTM E814 and UL 1479 evaluate how fire and smoke penetrate to the other side. Let’s talk about these two standards in more detail as part of evaluating how fire ratings work for building materials.

ICC-ES accredited laboratories perform fire safety testing to the UL 1479 test standard method for penetration firestops

UL Standard for Safety Fire Tests of Through-Penetration Firestops These requirements cover through-penetration firestops of various materials and construction that are intended for use in openings in fire resistive wall or floor-ceiling assemblies, or both. The...

Apr 1, 2011 · UL 1479 prescribes the pressure and duration of the hose-stream exposure, which depends on the hourly rating being tested. For example, in order to achieve a 2-hour fire rating the assembly must withstand a hose stream of 30 pounds per square inch (psi) for 0.9 seconds per exposed square-foot area.

Jun 10, 2015 · An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose: A revision of a single or multiple requirement(s). A complete new edition of an existing Standard or Outline.

Jan 13, 2025 · UL 1479 and UL 2079 are standards for through-wall firestop systems issued by Underwriters Laboratories (UL), but they target different types of fire conditions and applications. TST CABLES will take you to understand the difference between these two standards.