Fire Resistance Products, Systems and Designs

We provide training, advisory, testing, verification, inspection and certification services for the fire resistance industry to help you deliver compliant products, systems and assemblies that support safer, code‑conforming buildings. Fire‑rated wall, floor and ceiling assemblies are assessed for their ability to create compartmentation and help limit the spread of fire and smoke. Our third‑party certification evaluates safety and performance so you can demonstrate compliance with building codes.

We test to internationally recognized methods and environmental sustainability requirements, including UL 263/ASTM E119 and BS 476, to establish the hourly rating that Code Authorities rely on as proof of compliance.

Demonstrate market readiness with the UL Certification Mark and region‑specific options such as c‑UL and UL‑EU, alongside Evaluation Reports that provide added assurance to code authorities.  

Support specification decisions with GREENGUARD Certification, Environmental Product Declarations (EPD) and Environmental Claims Validation (ECV) to address environmental requirements for building materials.

UL Solutions provides fire-resistance certification, testing, modeling, and advisory services to help products, systems, and designs meet global fire-safety and building-code requirements.

Our third‑party certification services help demonstrate regulatory compliance and market acceptance for fire‑resistant products and assemblies.

We help verify products meet environmental and emissions requirements for healthier buildings. 

We assess fire performance against UL and industry standards to support code‑compliant designs. 

Model-based performance screening simulates the thermal behavior of gypsum board under UL 263/ASTM E119 fire exposure, using validated material properties and boundary conditions. The service provides comparative temperature and time-to-failure estimates to help identify the strongest design candidates—reducing reliance on costly, iterative full-scale fire tests prior to system-level certification.

We help ensure fire‑resistant assemblies perform as intended through: 

• Building envelope forensic services 
• Building envelope commissioning 

Use Product iQ^® to locate UL fire rated assemblies across walls, partitions, floor‑ceiling and roof‑ceiling constructions, as well as beams and columns. Product iQ supports searches by assembly or design number, category, keywords and more. Access Product iQ or read step‑by‑step guidance on searching UL fire rated walls, floors, roofs, beams and columns. How to use Product iQ 

Our Firestopping, Joint Protection and Perimeter Fire Containment Testing service certifies systems designed to help limit flame and smoke spread through penetrations and joints in ul wall assemblies and other rated constructions, with systems searchable in Product iQ.  Explore firestopping services

For projects requiring protection of structural steel, we test and certify to UL 263 for cellulosic fire scenarios and to UL 1709 for hydrocarbon exposure in petrochemical applications, with optional environmental durability per UL 2431. See structural steel services 

When exterior walls must be rated for fire approaching from outside, Product iQ can help you identify designs evaluated for exterior‑face exposure. See UL’s expert Q&A on locating these assemblies and the conditions of their use.  Read the Q&A

Understand listing requirements for electrical boxes and protective materials used in fire rated wall assemblies so the installation maintains the expected hourly rating.  Membrane penetration guidance

The UL Certification Mark on fire‑resistant products, systems and assemblies is widely relied on to show that regulatory and market requirements are met, helping differentiate solutions in critical applications.

Go beyond testing with engineering evaluations, building envelope commissioning and forensics, and inspection services that help ensure rated designs are specified and installed to perform as intended.