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More than 500,000 installations

aluk S140 lift and slide door | macclesfield


built from scratch, specified with intention

Not every installation is about replacing what came before. Sometimes it’s about getting the specification right from the very start – choosing glazing that does full justice to a new space before a single tile goes down or a wall gets painted. This Macclesfield extension is exactly that, a brand new build where the glazing was the first major decision and arguably the most important one.

The centrepiece is an AluK S140 lift and slide door in white, a four-pane system with two sliding panels operating in front of two fixed outer panels. The S140 is a premium aluminium lift and slide system – the kind of door that earns its specification. It operates with a reassuring smoothness that you notice immediately, lifting slightly on its track before gliding effortlessly, and the slim aluminium sightlines keep the glazed area as open and uninterrupted as possible. Floor-to-ceiling glass across the full width of the elevation means the garden becomes part of the room – even before the room is finished.

The raked aluminium frame on the corner elevation is a detail that elevates the whole structure. Fixed and fully glazed, it follows the roofline precisely, flooding what will become the interior with natural light from an unexpected angle and giving the extension an architectural quality that sets it apart from a standard box build. In white, it sits cleanly against the red brick without drawing attention to itself, letting the form do the talking.

With interiors still to be completed, these images only tell part of the story – but the glazing alone makes clear what kind of space this is going to be. Light, considered, and properly connected to the garden from the moment you walk in.

frequently asked questions

What is the AluK S140 lift and slide door?

The AluK S140 is a premium aluminium lift and slide door system designed for large openings. Unlike a standard sliding door, the S140 operates by lifting slightly off its track when the handle is turned, then gliding smoothly along the track with minimal effort before lowering back down to create an airtight, weather-resistant seal when closed. This mechanism allows the system to carry significantly larger and heavier glass panes than a conventional sliding door, making it ideal for extensions and new builds where maximising the glazed area is a priority.

What is the difference between a lift and slide door and a standard sliding patio door?

A standard sliding patio door runs directly on its track at all times, which means the seals need to be compressed enough to open and close smoothly – limiting how large and heavy the panels can be. A lift and slide door lifts clear of its seals before sliding, which means the panels can be significantly larger and heavier while still operating effortlessly. The result is a much more expansive glazed opening, slimmer sightlines and a higher level of thermal and acoustic performance when the door is closed.

What is a raked aluminium frame and where is it used?

A raked aluminium frame is a glazed frame where the top or bottom rail follows an angle rather than running horizontally, typically used where a roofline or architectural feature creates a non-rectangular opening. On this Macclesfield extension, the raked frame sits on the corner elevation and follows the pitch of the roof precisely, allowing the space to be fully glazed right up to the roofline. The result is a striking architectural detail that floods the interior with natural light from an unexpected angle while maintaining a clean, minimal appearance from outside.

Why choose aluminium for a new build extension?

Aluminium is the material of choice for contemporary extensions for several reasons. Its strength-to-weight ratio allows for much slimmer frame profiles than uPVC or timber, meaning more glass and less frame in the finished opening. It is also highly dimensionally stable – it won’t warp, swell or discolour over time – and requires virtually no maintenance beyond an occasional clean. For a new build where the glazing specification will define how the space looks and performs for decades, aluminium offers a level of quality, longevity and aesthetic refinement that other materials find difficult to match.


If you’re based in Macclesfield, Prestbury, Bollington or Wilmslow and are thinking about upgrading your doors or glazing, we’d love to help. Get in touch to book a free, no-obligation quote or visit our showroom.

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Alexander Windows Limited is registered with Companies House at Unit 42a Newby Road Industrial Estate, Newby Road, Hazel Grove, Stockport SK7 5DA. In England & Wales. Company number 02599172. Alexander Windows Limited is authorised and regulated by the Financial Conduct Authority FRN 1037109. We act as a credit broker not a lender and offer finance from a panel of lenders.