Building science solutions you can trust

Building science solutions you can trust

It is important for buildings to be safe and to operate efficiently, and that is no easy task. It takes a thorough understanding of complex issues such as regional code requirements and hidden maintenance needs. Underwriters Laboratories (UL) covers multiple areas of a buildings construction: from building inspections services and field testing of building envelopes to testing and certification of building materials.

Building inspection

UL’s building inspection services provide building owners and facility managers with the information they need to identify building compliance gaps and where improvements are needed to maintain compliance with fire and life-safety codes, security, and air and water quality requirements. This ultimately delivers confidence in building and occupant safety and the continuity and sustainability of the business. Our menu of services covers all the needs for the life-cycle of the building, including new building inspection and commissioning, training, and annual life-safety reviews while reviewing and recommending building security needs.

Fire, life safety, and security inspections

Gap analysis of building fire, life safety, and security systems through building design, construction, and maintenance helps to reduce risk of fire, life safety, and security failures and breaches that could result in harm to life, property, and litigation.

Indoor air quality inspections and certification

Indoor air quality (IAQ) issues can impact occupant safety and health. This is an assessment of IAQ issues and tools are provided to prevent future problems so that a healthy building can be maintained.

Alarm certificate services and alarm hub

Fire and security alarm companies are certified for their ability to install, maintain, test, inspect, and monitor alarm systems, provide runner service, and communicate with the proper authorities.

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Onsite field testing

Moving from inside to outside, gain confidence that installed windows, curtain walls, skylights, and all building envelope components and assemblies and the joint seals between those components and assemblies meet the performance requirements for airtightness and water penetration. UL’s field testing experts conduct onsite assessments to determine compliance, risk mitigation, and remediation solutions. Testing is conducted during construction at varying stages of installation and after construction to assure proper performance and compliance to requirements. Testing is also conducted on existing structures to identify the source of air and water leakage to allow for remediation of the problems.


  • Air and water field testing is conducted by constructing interior or exterior chambers around assemblies and pressurizing those assemblies while measuring for air and water penetration. Test results allow for contractors and owners to make improvements to achieve performance and compliance expectations.
  • Whole building air barrier/blower door testing is conducted to obtain an overall measurement of the airtightness of a whole building and adjacent spaces to the defined performance requirements resulting in increasing the performance and energy efficiency of a building.
  • Thermographic evaluations are conducted to identify conditions including uncontrolled air leakage, missing insulation, thermal bridges, and moisture presence inside materials.
  • Forensic evaluations are conducted to identify leakage issues using tools to validate precise characteristics including tempering of glass products, fogging of insulating units, argon fill concentration, and low-emissivity (Low-e) coatings on glass products.

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All information listed in this section was submitted by Underwriters Laboratories.
Kenilworth Media Inc. and Construction Specifications Canada (CSC) cannot assume responsibility for errors of relevance,
fact or omission. The publisher nor CSC does not endorse any products featured in this article.

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