Founded in 1985 by Brian Chelton and Dennis Mitchell, Duration Windows has grown to become one of the UK’s largest manufacturers of premium aluminium windows, doors, and roofs. What began with the creation of our first product – Secondary Glazing, which remains a customer favourite to this day – has evolved into a trusted, family-run business known for exceptional service, cutting-edge design and a comprehensive product range.

With over four decades of industry experience, we offer a true one-stop shop for trade professionals and homeowners alike: one supplier, one delivery, one payment – everything you need, all in one place.

Today, Duration Windows operates from an estate spanning over 60,000 sq ft, comprising 18 factory units, a central head office and a state-of-the-art showroom displaying our latest innovations. Every product is custom-made in-house by our skilled team using advanced machinery, ensuring consistent quality, fast lead times and comes backed by our 10-year guarantee.