Premier Security Ballistic & Blast Ltd: Pushing Passivhaus-Level U-Values in High-Security Doors, Windows and Curtain-Walling

Why U-Values matter in high-security projects

Energy efficiency reduces long-term operating costs: Lower U-values mean less heat loss in winter and less heat gain in summer, cutting energy bills for air conditioning, heating, and ventilation.

Occupant comfort and wellbeing: Consistent indoor temperatures and reduced drafts improve working conditions and occupant satisfaction in secure facilities.

Sustainability credentials: Aligning with Passivhaus or similar standards demonstrates a commitment to green design, which can be important for regulatory compliance, public perception, and lifecycle cost analysis.

Integrated design opportunity: Our systems are designed to integrate security performance with architectural performance, ensuring you don’t have to sacrifice one for the other.

Premier’s approach to achieving Passivhaus-like performance

Insulated, high-strength framing

Our steel profiles are engineered for minimal thermal bridging. Precision manufacturing and rigorous quality control reduce the number of heat transfer pathways.

Multi-chamber, thermally broken profiles help to suppress heat flow while maintaining the essential load-bearing and security characteristics required of ballistic and blast-rated systems.

Advanced glazing technology

Triple and low-emissivity (low-E) glass options are standard, with coatings tailored to reflect heat while preserving natural light and sightlines.

Interlayers and laminated glass constructions provide both security and acoustic performance without compromising thermal performance.

Edge-of-glass and spacer systems are selected to minimise thermal bridging and prevent condensation risks.

Superior seals and gaskets

We’ve invested in high-performance gasket technologies to create continuous, airtight seals around doors and curtain-walls.

Precision-fit hardware and weather-tight thresholds minimise air leakage without sacrificing operability or security.

Thermal breaks in curtain-walls and mullions

Curtain-wall systems are designed with continuous thermal breaks to interrupt heat transfer through framing.

Our mullions and transoms are engineered to maintain structural integrity under load while delivering low U-values.

Rigorous testing and certification

Our products are tested to relevant security standards (ballistic and blast) and tested for thermal performance in controlled conditions.

We work with independent third-party laboratories to certify U-values, ensuring you can reference verified data for building compliance and performance documentation.

What U-values can you expect from Premier’s products?

Doors (steel and composite with glazing): U-values commonly in the range of 0.8 to 1.2 W/m²K, with optimised configurations achieving the lower end of that spectrum. For select higher-performance configurations, especially with triple glazing and advanced thermal breaks, values can approach or dip below 0.8 W/m²K.

Windows (architectural steel-and-glass assemblies): Our systems are designed to deliver U-values around Premier Security Ballistic & Blast Ltd: Pushing Passivhaus-Level U-Values in High-Security Doors, Windows and Curtain-Walling

In the demanding world of high-security architecture, protection must go hand in hand with performance. Premier Security Ballistic & Blast Ltd is leading the way by delivering steel and glass doors, windows and curtain-walling systems that not only meet the toughest ballistic and blast standards but also rival Passivhaus-level thermal performance. Here’s how we achieve this combination of security and energy efficiency, why it matters, and what it could mean for your next project.

Why U-values matter in high-security projects

Energy efficiency reduces long-term costs: Lower U-values mean less heat loss in winter and less heat gain in summer, translating to lower heating, cooling, and ventilation bills over the building’s life.

Occupant comfort and wellbeing: Consistent temperatures, reduced drafts, and improved indoor air quality contribute to safer, more comfortable environments for occupants and staff.

Sustainability credentials: Achieving Passivhaus-like performance demonstrates a serious commitment to green design, lifecycle performance, and regulatory alignment.

Integrated design advantage: Our systems are engineered to deliver security performance without compromising architectural integrity or daylight penetration.

Premier’s approach to achieving Passivhaus-like performance

Insulated, high-strength framing

Steel profiles are engineered to minimise thermal bridging through precision manufacturing and tight tolerances.

Multi-chamber, thermally broken profiles reduce heat transfer while maintaining the structural integrity and security needed for ballistic and blast-rated systems.

Advanced glazing technology

Triple glazing and low-emissivity (low-E) coatings are standard options, optimising solar gains and minimising heat loss.

Laminated interlayers provide security and acoustic performance without sacrificing thermal efficiency.

Edge-of-glass spacers and low-conductivity frame interfaces are selected to minimise thermal bridging and condensation risk.

Superior seals and gaskets

High-performance, continuous seals around doors and curtain walls reduce air leakage and drafts.

Precision hardware and weather-tight thresholds ensure reliable operation in security-sensitive environments without compromising thermal performance.

Thermal breaks in curtain-walls and mullions

Curtain-wall systems incorporate continuous thermal breaks to interrupt heat flow through framing.

Mullions and transoms are engineered for dependable load-bearing performance while delivering low U-values.

Rigorous testing and certification

Our products are qualified against security standards (ballistic and blast) and subjected to thermal performance testing under controlled conditions.

Independent third-party laboratories certify U-values, providing verifiable data for building compliance, energy modelling and lifecycle assessments.