Generations of architects and specifiers know that Crittall Windows has been a benchmark of British craftsmanship and architectural refinement for more than 175 years. Renowned for manufacturing steel windows and doors that combine elegance with durability, the company has earned its reputation by consistently delivering products that are visually striking and functionally robust.

Today, an ambitious drive for innovation extends this rich tradition. Crittall’s design and engineering teams remain committed to developing products that meet the demands of modern architecture while preserving the iconic aesthetic the brand is known for. This commitment is clearly reflected in the firm’s Corporate W20 TE® and the T60® systems. Both systems offer exceptional thermal performance that meets the needs of energy-efficient design without compromising on style.

The Corporate W20 TE® system is a patent-pending evolution of Crittall’s celebrated W20 profile. It has been designed to answer the growing demand for energy efficiency in both residential and commercial architecture. Achieving impressive U-values of just 1.4 W/m²K, the system complies with Approved Document L and offers a genuine solution for projects where high performance must be balanced with design integrity.

Instead of adopting conventional thermal break technology, Crittall has adapted its trusted steel profile to create a thermal gradient across the section, equivalent to that of a thermally broken steel section. This clever engineering preserves the structural integrity and slim sightlines that define traditional steel windows while significantly improving insulation. Dual weather seals enhance weathertightness and ensure consistent internal comfort throughout the seasons.

Manufactured from 100 percent recycled steel and built to last more than 60 years, Corporate W20 TE® is a sustainable choice that does not compromise on durability or appearance. Available in any RAL, BS or bespoke colour, including textured and metallic finishes, this system offers the flexibility to suit a wide range of architectural styles and project requirements. Its elegant design remains true to the heritage of Crittall windows, while the incorporation of modern performance elements ensures that it continues to meet the stringent requirements of today’s building standards.

The T60® system represents the next generation of thermal innovation in steel glazing. Designed with advanced thermal barrier technology, T60® achieves U-values as low as 0.8 W/m²K, placing it among the most energy-efficient steel systems available today. Finished with an architectural grade polyester powder coating and featuring fully welded frames, T60® windows are built to withstand the test of time. Offering optional multipoint locking systems, double weatherstripping and enhanced acoustic insulation T60 provides a secure, comfortable and quiet interior environment. Particularly well suited to high-end residential developments and sensitive heritage refurbishments, T60® is an ideal solution where replacing original steel windows is necessary without compromising the building’s character.

Crittall’s commitment to innovation extends beyond its in-house product range. The company is investing in new products sourced from Secco Sistemi, an Italian design-led manufacturer of high-end steel windows and doors. While full details of the collaboration will be announced in due course, this strategic move reinforces Crittall’s intent to expand its product offering and consolidate its position in the premium market segment. In partnership with BM Architectural, supplier of Secco systems into the United Kingdom, Crittall will bring these exclusive new ranges to market with the same care, precision and performance-led approach that has long defined the brand.

Whether specified for a period property, a contemporary new build or a commercial redevelopment, Crittall steel systems provide a timeless architectural solution. Architects and developers seeking products that combine traditional style with modern efficiency will find that Crittall delivers excellence, as ever.

For further information on Crittall Windows and to explore the full range of steel systems available, please visit www.crittall-windows.co.uk