01768 254554/ projects@windowsinthelakes.co.uk.
Aluminium Sliding Doors Cumbria. Supply, Install, Free Quote
Slimline Sliding Doors Expertise
We design, survey and install premium aluminium sliding doors for residential projects where light, views and clean detailing matter.
Rather than offering a one-size-fits-all product, we assess each opening and specify the most suitable sliding door system based on size, layout, exposure and architectural intent — including advanced configurations such as corner-pocket sliding doors where entire walls can disappear from view.
From first survey to final installation, every project is professionally managed to ensure accuracy, performance and long-term reliability.
Survey, Supply & Installation | Cumbria & Lake District
A Fully Managed Survey, Supply & Installation Service
Installing aluminium sliding doors is not just about choosing a product. Correct specification, accurate surveying and professional installation are critical to achieving the end result you expect.
Our service includes:
- A professional home survey to assess openings, structure and tolerances
- Guidance on the most suitable sliding door system for your project
- Accurate specification prior to manufacture
- Coordinated supply and installation by experienced teams
We work across Cumbria and the Lake District, supporting extensions, renovations and high-quality home upgrades.
Choosing the Right Sliding Door System
There is no single "best" aluminium sliding door.
The right system depends on several factors, including:
- Overall opening width and height
- Desired sightlines and frame profiles
- Panel sizes and weight
- Exposure to weather and location
- How the doors will be used day to day
Our role is to assess these factors during the survey stage and recommend the sliding doors system that best suits your home and project, rather than forcing a pre-selected option.
Corner Pocket Sliding Doors (Cortizo Systems)
Corner pocket sliding doors create one of the most striking architectural features available in modern glazing design. By allowing large aluminium sliding panels to fully retract into concealed wall pockets, entire corners of a room can be opened with no visible frame, no post, and no visual interruption between inside and out.
We design and install corner pocket sliding door configurations using Cortizo aluminium systems, specified for projects where structural precision, smooth operation, and long-term reliability are essential. These installations require far more than standard sliding doors. Track alignment, panel weight, pocket construction, drainage, and structural support must all be considered at an early stage.
Cortizo systems are particularly well suited to corner pocket applications due to their engineering tolerances, large panel capabilities, and flexible track options. This allows panels to disappear cleanly into the structure while maintaining slim sightlines, excellent thermal performance, and effortless operation.
Because corner pocket sliding doors interact directly with the building structure, early coordination is critical. We regularly work alongside architects, builders, and structural engineers to ensure openings, steelwork, and pocket dimensions are correctly designed before construction progresses. This avoids compromises later and ensures the finished result performs exactly as intended.
If you are considering a corner pocket opening as part of a new build, extension, or high-end renovation, we strongly recommend discussing the glazing design early in the process. Our team can advise on system suitability, opening sizes, and technical requirements before final drawings are signed off.
Cortizo Cor Vision Sliding Door System
Best suited for:
- Replacement and renovation projects
- Extensions requiring adaptable system options
- Homes needing a balance of performance and design flexibility
Key Benefits:
Multiple configuration options across the Cortizo range
- Proven aluminium engineering with strong durability
- Suitable for a wide range of opening sizes and layouts
Cortizo systems are often selected where adaptability and reliability are key, particularly on projects with specific structural or design constraints.
AS-20 Large Span Sliding Door System
Best suited for:
- Wide or tall structural openings
- Properties with panoramic views
- High-end extensions and open-plan living spaces
Key Benefits:
- Capable of handling large glass panels
- Strong aluminium profiles for stability and longevity
- Designed for smooth operation on substantial openings
The AS-20 is typically specified following detailed survey where opening size, structure and panel handling requirements are carefully assessed.
Aluminium Sliding Doors – Technical Comparison
AS-20 Slimline 20mm Smarts Aluminium Sliding Doors
Cortizo Cor Vision Slimline 20mm Aluminium Sliding Doors
Cortizo Cor Vision Slimline 20mm Aluminium Sliding Doors
The AS-20 is designed for large openings and projects requiring substantial panel sizes without compromising performance. it is particularly suited to properties with wide views, garden connections, or architectural designs that demand fewer vertical breaks.
Cortizo Cor Vision Slimline 20mm Aluminium Sliding Doors
Cortizo Cor Vision Slimline 20mm Aluminium Sliding Doors
Cortizo Cor Vision Slimline 20mm Aluminium Sliding Doors
Cortizo sliding door systems offer a highly versatile range of aluminium solutions, suitable for a wide variety of residential applications. Known for engineering flexibility, Cortizo systems can be configured to suit both contemporary and more traditional architectural styles.
Cortizo Corner Pocket Aluminium Sliding Door
Cortizo Cor Vision Slimline 20mm Aluminium Sliding Doors
Cortizo Corner Pocket Aluminium Sliding Door
Corner pocket sliding doors create one of the most striking architectural features available in modern glazing design. By allowing large aluminium sliding panels to fully retract into concealed wall pockets, entire corners of a room can be opened with no visible frame, no post, and no visual interruption between inside and out.
Recent Aluminium Sliding Door Installations
We have installed aluminium sliding doors across a wide range of property types, from rural homes and period renovations to contemporary extensions.
Our installations focus on:
- Accurate alignment and detailing
- Clean threshold finishes
- Smooth operation and long-term durability
These images showcase an AS-20 sliding door we completed in December 2025.
A large span, with 3 glass panels, on a farm down a narrow access route.
Why the Survey Stage Matters
Aluminium sliding doors demand precision. Small inaccuracies at survey stage can lead to installation issues later, particularly on large openings.
During survey we assess:
- Structural openings and tolerances
- Threshold levels and drainage considerations
- Panel sizing and handling requirements
- Suitability of different sliding systems
- How the doors will be used day to day
This ensures the final installation performs as intended and avoids compromise during fitting.
Ready to discuss your project further?
If your project requires aluminium glazing that is designed, surveyed, and installed properly, submit your enquiry or book a design consultation.
Alternatively call us on 01768 254554 to speak to our team
Or email any questions to projects@windowsinthelakes.co.uk
ABOUT WINDOWS IN THE LAKES:
Heritage Windows & Doors Expertise
At Windows in the Lakes, we specialise in the supply and installation of stunning heritage windows and doors. With over 35 years experience, our teams work with only the very best products, featuring slim sightlines and low U-values.
Our full project service is designed to ensure the windows and doors we install in your home give a perfect blend of beauty and energy efficiency for your home.
PRODUCT REVIEWS
It's important that you know what you're potentially purchasing.
Whether it's Aluminium bifolding doors, Aluminium sliding doors, Heritage french doors or our other products, we delve into the products we offer with detailed reviews, covering all Technicals aspects including functionality, design and configuration and much more: