
Premium Aluminium French Doors
Wide openings. Slim frames. Classic proportions. Aluminium French doors combine the practicality of a traditional double-door opening with the slim profiles, strength and low maintenance of modern aluminium — designed for extensions, renovations and properties throughout Cumbria and the Lake District.
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Aluminium French Doors we have designed, surveyed and installed








Why this system exists
01
A wider clear opening
Both leaves open, so a garden room or dining space connects properly with the terrace without the track and stack of a folding system.
02
Slim profiles, large glass
Aluminium carries more glass on less frame than any other material at this scale, so the pair reads as glazing rather than joinery.
03
Contemporary or traditional
Minimal framing for a modern extension, or heritage steel-look proportions with slender glazing bars for a cottage or period elevation.
04
Colour without compromise
Powder-coated architectural colours, dual colour inside and out, and bespoke RAL options on many systems.
05
Durable in an exposed climate
Thermally broken frames, drained thresholds and gaskets selected around the orientation of the elevation rather than one default detail.
06
Secure by specification
Multipoint locking with PAS 24 tested configurations and laminated glass available. Specification varies depending on system and configuration.
Contemporary or heritage — two routes to the same opening
Contemporary aluminium French doors use minimal framing and clean architectural proportions. They suit modern extensions, rendered elevations and rear openings where the glass should do the talking.
Heritage and steel-look French doors reproduce the slender bars and traditional proportions of original steel joinery, which is usually the right answer on cottages, barn conversions and period properties — and often the version a conservation officer will accept. Our heritage French door designs sit within our wider entrance and heritage aluminium offering and remain available in full.
Configuration options
Fully glazed pairs for maximum daylight, Georgian and glazing bar designs where the elevation wants a traditional rhythm, side lights to widen the composition and top lights where the structural opening is tall.
Doors can be configured to open in or open out depending on the room layout, furniture and the level of the terrace outside. We confirm the handing, threshold and swing at survey rather than on installation day.
Coordinated aluminium systems
Selected FrameX door systems allow single doors, French pairs and bifolding doors to be created from the same family of aluminium profiles. Across a project that means consistent frame depth, sightline, hardware and finish from the side door to the rear elevation.
Where a particular configuration falls outside that platform we will tell you, rather than describe a match that is not there.
Colours, handles and thresholds
Anthracite grey and black lead the palette, with contemporary greys, neutrals and bespoke RAL colours available on many systems, and dual colour where the interior wants a lighter reveal.
Lever and lever-pad handles are available in matching and contrasting finishes, and thresholds range from weathered profiles on exposed elevations to low-line details where level access matters. Availability varies depending on system and configuration.
Part of a complete elevation
French doors rarely arrive alone. They sit between aluminium windows, alongside a set of bifolds or a slim slider, and the value of specifying them together is that every frame on the elevation shares one language.
We survey the whole opening schedule, advise where a slider or bifold would serve the architecture better, and install the package as one programme across Penrith, Kendal, Keswick, Windermere and the wider Lake District.

Considered detailing is what separates a fitted window from a finished one.
Recent installs
Recently completed across Cumbria and the North West
Real installations from across Cumbria and the North West — surveyed, specified and installed under our own supervision.
Technical
Specification at a glance
Final performance figures depend on configuration, glass make-up and installation detail. Full data sheets are issued with every quotation.
- System
- FrameX aluminium door platform, including the Aluna range
- Configurations
- Double swing French pair, open-in or open-out, with optional side lights and top lights
- Styles
- Contemporary minimal framing or heritage steel-look with glazing bars
- Glazing
- Double or triple glazed; laminated, solar control and acoustic options
- Thresholds
- Low-line or weathered — specification varies depending on system and configuration
- Finish
- Polyester powder coated, architectural and RAL colours, dual colour available
- Service
- Measured survey, supply and installation across Cumbria and the Lake District
Specify it your way
Colours, glass, hardware and details worth saving
Save anything that appeals and it travels with you — into your Inspiration Collection and then into your consultation.
Frame colours
- RAL 7016 AnthraciteThe contemporary default — quiet against stone and render alike.
- Jet BlackSteel-look elevations and rural conversions.
- Painted CreamTraditional joinery language for cottages and farmhouses.
- Heritage GreenA soft period colour that settles into landscape.
Glass & glazing
- Slim 20mm sliding sightlinesMaximum glass, minimum frame, panes that stack behind one another.
- Steel-look divided lightsAstragal bars and fine profiles echoing original metal windows.
- Flush casementsSashes sitting level with the frame, as painted joinery would.
Hardware
- Monkey-tail handlesForged period detailing for heritage and conservation openings.
- Flush lever handlesMinimal, colour-matched and unobtrusive on modern frames.
- Brushed bronze ironmongeryWarm metal against dark frames — the detail people touch.
Design features
A wider clear opening
Both leaves open, so a garden room or dining space connects properly with the terrace without the track and stack of a folding system.
Slim profiles, large glass
Aluminium carries more glass on less frame than any other material at this scale, so the pair reads as glazing rather than joinery.
Contemporary or traditional
Minimal framing for a modern extension, or heritage steel-look proportions with slender glazing bars for a cottage or period elevation.
Colour without compromise
Powder-coated architectural colours, dual colour inside and out, and bespoke RAL options on many systems.
Start the conversation
If you are planning an extension, renovation or new-build project and want glazing designed and installed without compromise, we would be glad to talk.
Direct
01768 254554projects@windowsinthelakes.co.ukBased in Appleby-in-Westmorland, with installation teams across Penrith, Keswick, Kendal, Windermere and the South Lakes.
Common questions
Aluminium French Doors: your questions answered
Practical answers to what homeowners ask us most about this system. Anything else, just ask.
Ask Us DirectlyVisit the Knowledge CentreNot sure if this would suit your home?
Share a photograph and we’ll show you how this collection works on properties like yours.
Wondering what this collection typically costs?
Plan your project investment with a guide based on comparable completed projects.
Designed with
Frequently paired with this collection.
Solar Control GlassGlass Studio
Brushed Bronze Pull BarHardware Studio
Flush ThresholdsDesign Details
Obscure Glass CollectionGlass StudioDesign Studio
Keep exploring in the Design Studio
Begin
Let’s design something exceptional.
Bring us your drawings, your site photographs or simply an idea. We will tell you what is possible, what it should cost and how long it will take.









































