ALuK Sliding Doors
Capital Windows have over 40 years experience manufacturing and installing an exceptional range of windows, doors and associated products. Whatever the project, we have the right approach and materials for the perfect finish.
Excellent Insulation & Thermal Performance
AluK aluminium sliding doors are an advanced patio door system. It’s designed to provide a high performance sliding door that’s suitable for residential or light commercial installations. It offers a multi panel inline or lift and slide door product available in a choice of tracks and thresholds for maximum design and sliding door panel choices.
Aluminium profiles feature a three chamber highly insulated design with polyamide thermal breaks. In conjunction with high specification glass you benefit from excellent insulation and thermal performance. The aesthetics of this quality aluminium sliding door creates a stylish and modern door that will complement any type of property.
Architectural Aluminium Sliding Doors
We craft these versatile sliding doors to your exact sizes and specifications.
As standard they come with a host of design features as you’d expect from a latest generation sliding door for today’s modern homes and design requirements.
- Up to six sliding panels possible
- Available double or triple glazed
- Inline or lift an slide options available
- Excellent running gear for reliability and light operation
- Single, double or triple tracks available
The great design of AluK sliding patio doors means floor to ceiling sliding walls can be created. All doors feature slim profiles enabling large glass panels letting in lots of natural light.
Sliding panels can be created 3 metres wide by 3 metres high making these doors one of the largest span doors on the market. Despite their advanced features, they’re affordable premium sliding doors.

Doors can be double or triple glazed with the latest specification glass. Toughened safety glass with warm edge spacer bars, low e coatings and argon gas fill completes the security the thermal efficiency of our sliding doors.
Security Features Of AluK Sliding Doors
As standard our doors come with the latest in multi point locking and highly robust handles and cylinders. Doors have been tested to BS EN 1627 for both inline and lift and slide options. Additionally they’re certified under the Secured By Design scheme.
Locks engage in strong stainless steel keeps with an additional locking facility. Durable anti-bump cylinders, anti lift systems and secure rebates keep sliding panels in place when locked.
Choose From Over 200 RAL Colours
Our doors come in the very latest contemporary shades benefitting from powder coating technology. This provides a long lasting and durable finish. You can choose from our range of stock colours or any of the standard RAL colours. Special metallic finishes are available as well as different colours inside and out.
Contact Your Sliding Door Experts
Capital Windows offer this market leading sliding door in a choice of profiles, upgrades and options. Contact us today to see how this advanced contemporary sliding door could add value to any property or design requirement.