Fabco, a leading UK manufacturer of external and internal steel windows and doors, introduces W20+, its most advanced and thermally efficient slim steel system to date.
Fabco has worked across a number of years to perfect a modern steel window and door that is visually identical to its original W20 product while encompassing all the benefits of the latest advancements in design and technology.
W20+ represents a significant advancement in hot-rolled steel thermal performance, with all design enhancements carefully concealed to fully maintain the original sightlines of steel and glass. The result is an efficient and secure slim steel system, achieving either a *DSER/ WER of A+, or a U-Value of 1.3 – 1.4, ensuring outstanding thermal performance without compromising on aesthetics.
* DSER = Door Energy Rating / WER = Window Energy Rating / 1.3 = fixed light / 1.4 = doors and windows.
Designed to frame the perfect view, Fabco’s signature steel profiles transform windows and doors into striking architectural features, balancing timeless elegance with contemporary design.
Renowned for bespoke craftsmanship, Fabco works closely with clients to create tailored solutions that elevate both residential and commercial spaces. Its hot-rolled steel framing systems are among the slimmest available, maximising glass area while delivering exceptional performance. Fine sightlines allow natural light to flood interiors, creating bright, inviting and inspiring environments.
Fabco’s commitment to quality engineering sets it apart. All products are manufactured in the UK using advanced CNC machinery, enabling exceptional accuracy and tighter tolerances. Specialist TIG and laser welding techniques deliver stronger joints with a cleaner, less visible finish compared to traditional methods.
Produced in a state-of-the-art facility, Fabco’s windows and doors are manufactured using 99% recycled steel, which is also 100% recyclable, reinforcing the company’s sustainability credentials.
Beyond windows and doors, Fabco undertakes specialist commissions including wardrobes, display cabinets, larder units, shower screens. Known for its problem-solving approach, Fabco embraces complex challenges and forms close working relationships with clients to deliver exceptional results. Exceeding industry regulations for both commercial and residential projects, Fabco offers complete peace of mind alongside uncompromising design and performance.
About Fabco
Fabco is a family run company grown from a background of specialist restoration and preservation of windows and metalwork on many of the finest ecclesiastical and historic buildings. They are recognised as the UK’s leading specialist in this field having worked on over 3,000 projects across Great Britain. Some of their notable work includes Canterbury Cathedral, Windsor Castle, Tower of London, V&A Museum and Harrods. Fabco steel windows & doors are professionally designed to bespoke requirements whilst being engineered to the highest standards. This means its frames exceed expectations whilst performing at unrivalled levels.