Innovative Thermlock® multi-chamber technology keeps you and your property well insulated against the worst of the UK weather. U-values (The better-insulated a product is, the lower the U-value will be) for windows are as low as 0.9W/(m2K) on our Prestige system when specified with triple glazing. Double glazed performance is 1.3W/(m2K) exceptional for an aluminium system.
Sheerline aluminium windows are available in a choice of two opening sash styles; ‘Stepped’ – inspired by traditional steel windows – and ‘Contemporary’ with a more modern minimalist aesthetic. Both styles are available in either our standard outer frame, or as a ‘Flush’ option that brings both the perimeter and the opening sash perfectly in-line with each other. With sightlines as slim as 59mm on our innovative Classic window system, Sheerline products can help bathe your home in light.
Our patented corner jointing method creates exceptionally strong frames, maximising the inherent strength of Sheerline’s aluminium construction. Features such as unique hinge protectors and Classic's beadless design mean Sheerline products are amongst the most secure available, helping keep you and your home safe. Secured by Design upgrades are also available on appropriate products.
All our windows and doors are stocked in eight powder coated matt colours, as well as a high gloss white, with the option of choosing a different colour for the interior on standard leadtimes. A further three anodised finishes are available for the ultimate durable and stylish finish. Bespoke colours are also available - subject to minimum order quantities.
Made from the most recycled and abundant metal in the Earth’s crust and produced in the most energy efficient aluminium window facility in the UK, all Sheerline products are manufactured in the most sustainable way possible. Our state-of-the-art, energy efficient SMS HYBREX press delivers energy savings of up to 55% compared to traditional presses.
With a shared design philosophy, and built around the same ingenious and unique engineering principles, Sheerline’s various systems are designed to be used seamlessly together. So rest assured, safe in the knowledge that aesthetics, colours, styles and sightlines will match perfectly across your home.
Our patented corner jointing method drastically reduces manufacturing waste and improves quality. We’ve also designed out the stepping of misaligned corners, allowing each Sheerline window to be individually hand tuned to improve quality. Every aspect of every product has been custom designed to offer you the best performing, best looking products possible, free of the legacy issues that some traditional systems suffer from.
Our unique Thermlock® closed-cell, insulating chamber, hidden away inside every Sheerline window and door act as a thermal break, creating products with class leading thermal performance. Sheerline’s cills, ancillaries and corner posts, also feature this same technology coupled with innovative in-built weather sealing that keep draughts and rain safely outside. No element of the Sheerline system has been overlooked, which helps reduce condensation issues caused by cold bridging.
We’ve invested over £15m in our state-of-the-art factory. This investment ensures quality is built into our very foundations. With a 170-tonne aluminium press (the same weight as a fully-grown blue whale) sitting at the heart of our production facility. ISO9001:2015 accredited, we are passionate about UK sourcing and manufacturing.