01768 254554/ projects@windowsinthelakes.co.uk.
01768 254554/ projects@windowsinthelakes.co.uk.


If you’re looking for authentic steel-style French doors without the drawbacks of traditional steel, our AD-55 heritage aluminium French doors are designed specifically for period properties, character homes, and sensitive extensions across Cumbria and the Lake District.
These doors replicate the slim sightlines, proportions, and detailing of classic steel windows and doors, while delivering modern thermal performance, security, and reliability.
They are particularly well suited to:
• Victorian and Edwardian homes
• Georgian townhouses
• Farmhouses and rural properties
• Barn conversions
• Heritage renovations
• Architect-led extensions
• Planning-sensitive projects
Project type
Extension
Renovation
New-build
Replacement glazing
Other
What are you enquiring about?
Aluminium sliding doors
Aluminium bifold doors
Aluminium windows
Heritage aluminium French doors
Corner Pocket Sliding Doors
Approximate opening sizes (if known)
Width (mm)
Height (mm)
Approximate sizes are fine at this stage.
Preferred timeframe
Immediately
Within 3 months
3–6 months
6+ months
Open today | 09:00 – 17:00 |

Traditional steel doors look beautiful, but they come with compromises: poor insulation, condensation risk, corrosion, and complex maintenance.
Our AD-55 aluminium heritage system achieves the same visual effect with:
• Ultra-slim aluminium profiles
• True steel-style glazing bars
• Deep sightlines and authentic proportions
• High-performance double or triple glazing
• Excellent thermal efficiency
• Low maintenance, long lifespan
From the street, they look like steel.
In daily use, they behave like a modern aluminium system should.

We regularly work on projects where appearance matters just as much as performance.
Our heritage aluminium French doors are often specified for:
• Conservation areas
• Listed-building-style renovations (subject to consent)
• Properties where timber or steel would traditionally be expected
• Extensions designed to complement existing architecture
We understand the visual language planners, architects, and conservation officers look for: slim frames, correct proportions, minimal modern intrusion.
Where required, we can support your project with:
• Detailed product specifications
• Section drawings and visuals
• Advice on sightlines and glazing layouts
• Configuration guidance to suit planning constraints

Heritage doors demand accuracy. Small errors in proportion or installation are immediately obvious on steel-look systems.
Every project includes:
• A professional on-site survey
• Careful checking of apertures and structure
• Correct setting-out for heritage sightlines
• Experienced aluminium installers
• Clean detailing, trims, and finishes
We do not “supply only and hope for the best”.
These doors are specified, surveyed, and installed as a complete system.

Our heritage French doors are available with:
• Multiple opening configurations
• Side panels and toplights
• Traditional black or heritage colour finishes
• Internal and external colour options
• Slim glazing bar layouts
• High-performance glazing options
Each door is specified to suit your property, not pulled from a price list and forced into place.
For selected installations, homeowners may be invited to take part in our Capturing Windows in the Lakes project showcase programme.
This involves a professionally produced drone and photography session following completion, used to document high-quality local installations across the region.
As a thank-you for taking part, participating customers receive a £500 project contribution after completion.
Participation is entirely optional and subject to suitability, location and scheduling.

Windows in the Lakes is proudly headquartered in Cumbria, serving homeowners across:
• Penrith
• Kendal
• Carlisle
• Keswick
• Windermere
• The Lake District
• Surrounding villages and rural locations
We are a local specialist business, focused on heritage-sensitive glazing projects where attention to detail, correct specification, and careful installation genuinely matter.
Behind the scenes, we work closely with our sister company, The Fenestration Network, which provides additional technical support, systems, and national manufacturer relationships. This allows us to combine local care and accountability with the processes, experience, and resources more commonly associated with larger national firms — without losing the personal service our customers value.
For you, this means:
• A genuinely local point of contact
• Proper surveys and technical oversight
• Access to premium aluminium heritage systems
• Professional project delivery from start to finish

• Our Heritage Aluminium French Doors are a great fit for you if:
• You appreciate well-considered proportions and fine detailing
• Your property has character you want to enhance, not overpower
• You love the steel-look aesthetic but want modern performance and longevity
• You value accurate surveys and careful, professional installation
• You’re making a long-term investment in your home
They may be less suitable if:
• Your priority is finding the lowest possible upfront cost
• You’re exploring mass-produced uPVC alternatives
• Visual authenticity and architectural detail aren’t key considerations

Simply and easy to install, our Aluminium Doors, French Doors, and Heritage Windows are a dream for any installer and customer.

Expertly crafted using many years of experience and design, our range includes beautifully designed Aluminium Doors, elegant French Doors, and classic Heritage Windows.



If your project requires aluminium glazing that is designed, surveyed, and installed properly, submit your enquiry or book a design consultation.
Professional Surveys and Quality Installations are at the very core of our business.
Putting Glazing into your home has to be done with the utmost precision; we pride ourselves on our knowledge and skill.
First we built ourselves from the ground up, building loyal, experienced teams of skilled surveyors and installers.
Next we brought in Glazing supply. We partnered with the highest quality manufacturers for Heritage windows and doors, aluminium bifolding doors, aluminium sliding doors, aluminium patio doors and other aluminium products across the country so we can offer our customers a single point of contact for Glazing.
Fast forward to now and we are a thriving glazing company in Cumbria offering:
FULL GLAZING SUPPLY, SURVEY AND INSTALLATION USING LOCAL TEAMS AND LOCAL EXPERTS.
Windows in the Lakes are based in the Lake District and are supply and Installation experts in:
Heritage Windows & Doors/ Aluminium Bifolding doors / Aluminium Sliding doors / Aluminium Patio doors / Entrance Doors/ Heritage french doors/ Aluminium Windows/ Garden Studios, Glass Balustrades, Orangeries.
We supply and install in Penrith, Carlisle, Eden, Appleby, Kirkby Stephen, Tebay, Keswick, Grassmere, Ambleside, Windermere, Bowness, Whitehaven, Workington, Kendal, Sedbergh, Ulverston, Kirkby Lonsdale, Barrow-in-Furness.
Our teams have over 35 years experience supplying and installing quality Glazing products across the Lake District and Cumbria.
We have teams of Surveyors, Installers and Technical Experts to help guide you through your project.
We cover all regions on this map with our professional and highly skilled , local surveyors and installers.
01768 254554

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:

Homeowners trust us with supplying and installing quality aluminium bifolding doors, aluminium sliding doors, heritage french doors or other glazing products.
We write full Homeowner Case Studies to showcase these projects:
Windows in the Lakes
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