Achieve optimal performance and market access for building envelope components and systems with UL Solutions’ testing, certification and advisory services, delivered by built environment experts worldwide. In our laboratories, we simulate wind‑driven rain, hurricane and tornado winds, and hot and cold extremes to assess envelope products and systems before, during and after construction.
Architects, manufacturers, contractors, consultants, building owners and authorities rely on us to assess performance, navigate complex regulations and protect brand value.
Local support with global reach to help you meet international, national and regional requirements efficiently.
Design assistance during concept development and accredited field testing during construction help optimize installed performance and validate compliance.
A single provider for testing, advisory, certification and training, with bundled solutions tailored to your building envelope engineering needs.
UL Solutions combines building science expertise with state‑of‑the‑art facilities to deliver a broad range of building performance testing, certification and advisory solutions for your exterior envelope and building envelope system. Explore the services below to match your project phase and objectives.
Evaluate envelope and façade performance before construction to help save time and costs, identify potential leakage or structural concerns, and demonstrate compliance to project specifications.
Our teams test to AAMA, ASTM, CWCT, CSA and EN requirements, covering air infiltration, water penetration (static and dynamic), wind loads and impact, across systems such as curtain walls, window walls, precast concrete, sloped glazing, masonry, rainscreens and metal cladding.
Mitigate risk and verify in‑place performance with on‑site assessments throughout construction and the building lifecycle, including existing structures, against key standards (e.g., ASTM E1105, E2128; AAMA 501.1/501.2/501.3; ASTM E779/E783/E1186).
Our North American laboratories are staffed by field testing experts, and UL LLC is accredited by IAS (ISO/IEC 17025) and the AAMA Laboratory Accreditation Program.
For windows, doors, curtain walls and skylights, we provide the breadth of testing needed, Air/Water/Structural (AAMA/CSA), air barrier (CAN/ULC S741/S742), windstorm impact (ASTM/TAS), thermal (ASTM E1363) and acoustical, plus support for certifications recognized by AAMA, WDMA, NFRC, CSA, Miami‑Dade, Florida Validation Services and TDI.
In the U.K. and Europe, we offer certification schemes and associated testing designed to satisfy requirements from industry bodies and insurance underwriters, covering enhanced window/door security (SBD), general performance (BS 644, BS 7412, BS 4873, BS 8529), curtain walling and rainscreen cladding (NHBC Chapter 6.9, Premier Guarantee 7.7.5), and cladding support systems (NHBC Chapter 6.9).
Our building envelope consultants provide commissioning, design peer reviews, construction reviews, and field performance testing to help reduce long‑term operating and repair costs while improving in‑service performance.
For existing buildings, we perform forensic investigations (e.g., water leakage, condensation, air leakage, thermal comfort, glass failure, corrosion, pest issues) and technical assessments to plan renewals and address health/safety hazards.
Evaluate envelope and façade performance before construction to help save time and costs, identify potential leakage or structural concerns, and demonstrate compliance to project specifications.
Our teams test to AAMA, ASTM, CWCT, CSA and EN requirements, covering air infiltration, water penetration (static and dynamic), wind loads and impact, across systems such as curtain walls, window walls, precast concrete, sloped glazing, masonry, rainscreens and metal cladding.
Mitigate risk and verify in‑place performance with on‑site assessments throughout construction and the building lifecycle, including existing structures, against key standards (e.g., ASTM E1105, E2128; AAMA 501.1/501.2/501.3; ASTM E779/E783/E1186).
Our North American laboratories are staffed by field testing experts, and UL LLC is accredited by IAS (ISO/IEC 17025) and the AAMA Laboratory Accreditation Program.
For windows, doors, curtain walls and skylights, we provide the breadth of testing needed, Air/Water/Structural (AAMA/CSA), air barrier (CAN/ULC S741/S742), windstorm impact (ASTM/TAS), thermal (ASTM E1363) and acoustical, plus support for certifications recognized by AAMA, WDMA, NFRC, CSA, Miami‑Dade, Florida Validation Services and TDI.
In the U.K. and Europe, we offer certification schemes and associated testing designed to satisfy requirements from industry bodies and insurance underwriters, covering enhanced window/door security (SBD), general performance (BS 644, BS 7412, BS 4873, BS 8529), curtain walling and rainscreen cladding (NHBC Chapter 6.9, Premier Guarantee 7.7.5), and cladding support systems (NHBC Chapter 6.9).
Our building envelope consultants provide commissioning, design peer reviews, construction reviews, and field performance testing to help reduce long‑term operating and repair costs while improving in‑service performance.
For existing buildings, we perform forensic investigations (e.g., water leakage, condensation, air leakage, thermal comfort, glass failure, corrosion, pest issues) and technical assessments to plan renewals and address health/safety hazards.
Validate the performance and compliance of fenestration products prior to final installation onsite using lab-based testing and modeling.
Opening the door to opportunity by providing testing and certification for various standards.
Demonstrate the health and wellness of your buildings with a Verified Healthy Building Mark.
Fostering confidence in the safety, performance, reliability, durability and sustainability of exterior wall assemblies.
Testing is performed in the laboratory and in the field across the project lifecycle, pre‑construction mock‑ups, during installation and after occupancy.
In laboratories, we subject assemblies to simulated extreme conditions (wind‑driven rain, hurricane/tornado winds, temperature extremes) and evaluate air, water, structural, thermal and impact performance to applicable AAMA/ASTM/CWCT/CSA/EN standards.
In the field, our experts use standardized methods (e.g., ASTM E1105 for water penetration; AAMA 501.2 for dynamic water; ASTM E779/E783 for air) to assess installation quality and compliance, and to diagnose sources of leakage or infiltration for remediation.
From Toronto and Montréal, our teams deliver field testing, performance mock‑ups and fenestration services, helping owners and architects build quality and, where applicable, secure enhanced commissioning points from programs such as BOMA Best, LEED and Net Zero. The Montréal laboratory spans 52,000 square feet and includes more than 360 feet of interior/exterior reaction wall, accommodating mock‑ups up to 60 feet tall.
Our Telford, England performance mock‑up laboratory tests façade systems to British, European and North American requirements, including CWCT Sequence B, BS EN 13830, AAMA 501.2, and more, and supports CE/UKCA marking for windows and doors alongside PAS 24 and BS 6375 testing.
From Toronto and Montréal, our teams deliver field testing, performance mock‑ups and fenestration services, helping owners and architects build quality and, where applicable, secure enhanced commissioning points from programs such as BOMA Best, LEED and Net Zero. The Montréal laboratory spans 52,000 square feet and includes more than 360 feet of interior/exterior reaction wall, accommodating mock‑ups up to 60 feet tall.
Our Telford, England performance mock‑up laboratory tests façade systems to British, European and North American requirements, including CWCT Sequence B, BS EN 13830, AAMA 501.2, and more, and supports CE/UKCA marking for windows and doors alongside PAS 24 and BS 6375 testing.
Learn about third-party certification, including the different ways to demonstrate that products comply with standards and code requirements.
Learn about evaluation reports provided by UL Solutions to support guidance in determining compliance with code regulations.
Leverage our technical training for the building envelope industry. We provide the educational resources needed for you to develop, manufacture, install and deploy safer products throughout the global marketplace.
Laboratory mock-up testing is like the rehearsal before the big show. Assess the design, materials and performance of your building facade before construction to help reduce project costs and time.
Moisture can alter building envelope durability. Unwanted humidity can weaken building structures and compromise human health and safety. Learn how to avoid such harmful consequences in buildings.
Fenestration product testing and certification can be a challenging hurdle to overcome, all before your fenestration products enter the market. We can guide you to the right path in your journey to market.
Talk with UL Solutions about your next project, whether you need a building envelope company for pre‑construction mock‑ups, a building envelope inspector for field performance verification, or certification support for specific markets. Our team can align services to your specifications and timeline.
In UL Solutions content, “building envelope” refers to the exterior enclosure systems and components, such as windows, doors, curtain walls, window walls, precast concrete, sloped glazing, masonry, rainscreens and metal cladding, whose performance is verified for air, water, structural, thermal and impact resistance.
Yes. Our commissioning services support owners throughout design and construction with peer reviews, mock‑up testing, construction reviews and field performance testing to reduce risk and enhance durability and in‑service performance.
Yes. UL Solutions conducts field testing on existing structures to identify sources of air and water leakage, assess installation quality and support remediation.
Depending on scope and region, we test to AAMA, ASTM, CWCT, CSA and EN standards. Examples include ASTM E1105 (field water), ASTM E283 (air leakage), ASTM E547 and AAMA 501.1/501.2 (water), and ASTM E330 (structural).
Building envelope centers of excellence include Canada and the U.K., with facilities such as our 52,000‑sq‑ft Montréal lab (mock‑ups to 60 ft) and a performance mock‑up lab in Telford, England.
Yes. In North America, our services can help owners and architects increase confidence and, where applicable, secure additional points for enhanced commissioning from programs such as BOMA Best, LEED and Net Zero.
