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Based in Appleby-in-Westmorland

Kendal, Windermere & South Lakes Installation Teams

Teams in Penrith, Keswick & The North

Our central Cumbrian headquarters, providing local accountability and expert-led site surveys for every project.

Teams in Penrith, Keswick & The North

Kendal, Windermere & South Lakes Installation Teams

Teams in Penrith, Keswick & The North

Local installers familiar with the unique architectural requirements and weather-sealing needs of Northern Lake District homes.

Kendal, Windermere & South Lakes Installation Teams

Ultra-Slim Sliders & Heritage Aluminium French Doors

Dedicated regional crews providing high-speed service and professional project management across the South Lakes area.

Ultra-Slim Sliders & Heritage Aluminium French Doors

Architectural systems including slim-line sliding doors and heritage French doors designed for maximum glass and minimal sightlines.

Timber-Look, Sashes & Aluminium-Look uPVC

Ultra-Slim Sliders & Heritage Aluminium French Doors

Timber-Look, Sashes & Aluminium-Look uPVC

Our full suite of high-performance alternatives, from vertical sliding sashes to R7, R9 & R2 designer frames that replicate the look of metal or wood.

10-Year Manufacturer Backed Guarantee

Ultra-Slim Sliders & Heritage Aluminium French Doors

Timber-Look, Sashes & Aluminium-Look uPVC

Total peace of mind with a robust guarantee that positions you as a premium authority and protects your home investment.

Just Some of Our Recent Installs

**Slim 20mm Sliding Door Set**
**Installed in Windermere in May 2026**

**Heritage French Door Set**
**Installed in Barrow in May 2026**

**Single Door and Window**
**Installed in Windermere in May 2026**

**External Balustrade Glass and Base Channel**
**Installed in Keswick in May 2026**

AB60 Smart French Doors
Installed in Bowness in May 2026 — **AB60 Smart French Doors**
**Bowness - May 2026**

Heritage Alunet Bifold Doors
Lancaster - May 2026 — **Heritage Alunet Bifold Doors**
**Lancaster - May 2026**

Internal Balustrade Glass - Post and Rail System
Installed in Keswick in May 2026 — **Internal Balustrade Glass - Post and Rail System**
**Installed in Keswick in May 2026**

AS20 Smart Slimline Sliding Doors
Carlisle - January 2026 — **AS20 Smart Slimline Sliding Doors**
**Carlisle - January 2026**

Farmhouse Extension Aluminium Windows
Carlisle - January 2026 — **Farmhouse Extension Aluminium Windows**
**Carlisle - January 2026**

Full House Aluminium Windows
Kirkby Stephen - August 2025 — **Full House Aluminium Windows**
**Kirkby Stephen - August 2025**

Our Glazing Services

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

Classic French door proportions reimagined in aluminium, offering durability, slim frames and dependable everyday performance.

GO TO ALUMINIUM FRENCH DOORS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM WINDOWS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

Slim-profile aluminium glazing designed to replicate traditional steel and Crittall-style designs, suitable for period homes and planning-sensitive projects.

GO TO ALUMINIUM WINDOWS

TIMBER LOOK UPVC

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

ALUMINIUM LOOK UPVC

Expertly crafted timber look and aluminium look upvc, as well as timber look upvc vertical sliding sash windows.

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ALUMINIUM LOOK UPVC

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

ALUMINIUM LOOK UPVC

Designed and created to look like Aluminium windows, Aluminium look uPVC gives homeowners the same aesthetics as Aluminium windows without the price tag.

GO TO Aluminium look UPVC

GS20 Sliding Doors | Windows in the Lakes

SLIM SLIDING DOORS - ALUMINIUM

Large-format sliding doors designed to maximise light and create clean, contemporary openings between indoor and outdoor spaces.

GO TO ALUMINIUM SLIDING DOORS

AB-60 Bifolding Doors| Windows in the Lakes

BIFOLDING DOORS - ALUMINIUM

SLIM SLIDING DOORS - ALUMINIUM

Flexible folding door systems that fully open elevations, combining slim profiles with smooth operation and strong thermal performance.

GO TO ALUMINIUM BIFOLDING DOORS

CASEMENT UPVC

SLIM SLIDING DOORS - ALUMINIUM

COMPOSITE DOORS

Clean, angular lines; Casement windows provide an elegant finish to any property.

GO TO Casement UPVC

COMPOSITE DOORS

SLIM SLIDING DOORS - ALUMINIUM

COMPOSITE DOORS

Whether you want a traditional cottage-style entrance, a modern anthracite statement door, or a heritage-inspired design with decorative glazing, we offer a huge range of styles, colours and hardware options to suit.

GO TO COMPOSITE DOORS

glass balustrades | Windows in the Lakes

FRAMELESS GLASS BALUSTRADES

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

ALUSPACE INTERNAL DOORS AND SCREENS

Minimalist glass balustrade systems providing safety without visual obstruction, ideal for balconies, staircases and terraces where uninterrupted views and a clean architectural finish matter.

GO TO Frameless Glass Balustrades

Aluspace internal doors | Windows in the Lakes

ALUSPACE INTERNAL DOORS AND SCREENS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

ALUSPACE INTERNAL DOORS AND SCREENS

Slimline aluminium internal doors designed to divide spaces without blocking light, offering steel-look aesthetics, clean sightlines and flexible configurations for modern and industrial-style interiors.

GO TO Aluspace Internal Doors and Screens

CORTIZO CORNER POCKET ALUMINIUM SLIDING DOORS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

Large-format aluminium sliding doors that slide discreetly into wall pockets, creating fully open corners with minimal visible frame and uninterrupted views when doors are open.

GO TO ALUMINIUM CORNER POCKET SLIDING DOORS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

We provide professional glazing repairs and double glazed unit replacements across Penrith, Cumbria and the surrounding areas.

GO TO GLASS REPAIRS

Why Homeowners Choose Windows in the Lakes

• Local surveyors and installation teams
• Premium aluminium and timber look uPVC systems with slim sightlines
• Planning-aware, heritage-sensitive designs available
• Fully managed process from first enquiry to final sign-off

We focus on a carefully selected range of aluminium windows and doors chosen for performance, aesthetics and long-term reliability.

Whether you are opening up a modern extension or replacing glazing in a period property, we help match the right system to your home and budget.

Get a Free no obligation quote

7 Mistakes Homeowners Make When Choosing Aluminium Glazing.

Download our free guide to learn:

• Why some “slimline” doors aren’t actually slim

• The structural mistake that limits glass sizes

• Why the cheapest quote often becomes the most expensive

• The one question every homeowner should ask before ordering

Planning an extension or replacing your doors and windows? Most homeowners make expensive glazing mistakes before they even get a quote.

Alternatively message us for quick advice.

Most homeowners send us photos of their openings / drawings.

SEND US YOUR PLANS OR PHOTOS

Serving Every Corner of Cumbria & the Lake District

We provide aluminium and timber look uPVC glazing supply and installation across the whole of the Lake District, including:

- Ambleside

- Bassenthwaite

- Coniston

- Grasmere

- Rydal

- Hawkshead

- Keswick

- Langdale

- Ullswater

- Penrith

- Carlisle

- Windermere

- Bowness

- Kendal

- Appleby-in-Westmorland

- Kirkby Stephen

- Kirkby Lonsdale

- Barrow-in-Furness

- Ulverston

- Carlisle

- Whitehaven

- Maryport

- Cockermouth

If you are unsure whether we cover your area, our team will be happy to confirm.

Email us to Check Availability in Your Area

Start the conversation

Adding Details such as the below into your enquiry form helps us to understand your project fully.

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

Windows in the Lakes

Hours

Today

Closed

Frequently Asked Questions

Please reach us at projects@windowsinthelakes.co.uk if you cannot find an answer to your question.

What areas does Windows in the Lakes cover?

Windows in the Lakes supplies and installs premium aluminium and uPVC windows and doors across Cumbria and the Lake District, including Penrith, Kendal, Keswick, Windermere, Carlisle, Appleby, Kirkby Stephen and surrounding areas. We also work on selected projects across North Yorkshire and the North West.

What products does Windows in the Lakes specialise in?

We specialise in aluminium sliding doors, heritage-style aluminium doors, bifold doors, aluminium windows, flush uPVC windows, composite doors, rooflights and bespoke glazing systems for modern homes, extensions and renovation projects. Our focus is on slimline, high-performance glazing designed for design-led homes.

Do you offer aluminium sliding doors in Cumbria?

Yes. Windows in the Lakes supplies and installs slimline aluminium sliding doors throughout Cumbria, including systems such as Cortizo Cor Vision and Smart Systems AS-20. These doors are ideal for creating large glazed openings with minimal sightlines and excellent thermal performance.

Are heritage-style windows and doors available?

Yes. We offer heritage aluminium windows and French doors designed to replicate traditional steel-look glazing while providing modern insulation, security and low maintenance. These are particularly popular in period homes, barn conversions and conservation-sensitive properties across the Lake District and Yorkshire.

How long does it take to receive a quotation?

We aim to provide quotations within 48 hours for most enquiries. More complex projects involving structural glazing, large extensions or architectural drawings may take slightly longer to ensure accuracy and specification checks are completed properly. Revolutionary concept in construction: actually replying to people.

Do you provide both supply only and installation?

Yes. Windows in the Lakes offers both supply-only and full survey-and-installation services. We work with homeowners, builders, architects and developers on projects ranging from single replacement windows to full-house glazing packages.

What makes Windows in the Lakes different from other glazing companies?

Windows in the Lakes combines local service with structured project management and premium product expertise. Customers benefit from detailed surveys, dedicated communication, technical support, professional installation teams and a focus on slimline architectural glazing rather than standard off-the-shelf products.

Are your windows and doors energy efficient?

Yes. Our aluminium and uPVC glazing systems are designed to achieve excellent thermal performance, helping reduce heat loss and improve home comfort. We offer double and triple glazing options depending on the project requirements and desired energy efficiency levels.

Can Windows in the Lakes help with modern extensions and renovations?

Absolutely. We regularly work on contemporary extensions, renovations, barn conversions and self-build projects across Cumbria. Our team can advise on large-format glazing, corner sliding doors, rooflights, thresholds, structural considerations and overall glazing design.

How do I get a quote from Windows in the Lakes?

You can request a quote through the Windows in the Lakes website, call the office directly, or send architectural drawings and inspiration images by email. The more detail provided, the more accurate and useful the quotation process becomes.

Do you install windows and doors in conservation areas?

Yes. Windows in the Lakes regularly works on properties in conservation areas across Cumbria and the Lake District. We can advise on heritage-style aluminium systems, flush sash windows and glazing designs that maintain traditional aesthetics while improving thermal performance and security.

What are the benefits of aluminium windows and doors?

Aluminium windows and doors offer slim sightlines, modern aesthetics, excellent durability and low maintenance. They are ideal for large glazed openings, contemporary extensions and homeowners wanting a premium architectural look with long-term performance.

Can you replace old uPVC windows with modern flush styles?

Yes. We supply and install modern flush uPVC window systems designed to replicate traditional timber aesthetics while offering improved energy efficiency, security and reduced maintenance. These are especially popular in villages, rural homes and character properties throughout Cumbria.

Do you offer rooflights and fixed glass installations?

Yes. Windows in the Lakes installs aluminium rooflights, fixed frame glazing and bespoke glass feature systems for kitchens, extensions and open-plan living spaces. These products are designed to maximise natural light while maintaining thermal efficiency and clean architectural lines.

Are your glazing products made to measure?

Yes. Every window and door system we supply is manufactured to suit the specific property and project requirements. We carry out detailed surveys to ensure accurate sizing, specification and installation coordination.

Aluminium & Timber Look uPVC Windows & Doors in Cumbria

Aluminium & Timber Look uPVC Windows & Doors in Cumbria

Based in Appleby-in-Westmorland

Kendal, Windermere & South Lakes Installation Teams

Teams in Penrith, Keswick & The North

Teams in Penrith, Keswick & The North

Kendal, Windermere & South Lakes Installation Teams

Teams in Penrith, Keswick & The North

Kendal, Windermere & South Lakes Installation Teams

Kendal, Windermere & South Lakes Installation Teams

Ultra-Slim Sliders & Heritage Aluminium French Doors

Ultra-Slim Sliders & Heritage Aluminium French Doors

Ultra-Slim Sliders & Heritage Aluminium French Doors

Ultra-Slim Sliders & Heritage Aluminium French Doors

Timber-Look, Sashes & Aluminium-Look uPVC

Ultra-Slim Sliders & Heritage Aluminium French Doors

Timber-Look, Sashes & Aluminium-Look uPVC

10-Year Manufacturer Backed Guarantee

Ultra-Slim Sliders & Heritage Aluminium French Doors

Timber-Look, Sashes & Aluminium-Look uPVC

Local Expertise. Professional Standards.

Local Expertise for Cumbrian Homes

Get a Quote - Our Team Will Call You Back

uPVC Windows & Doors in Appleby | Slimline & Heritage Glazing

Windows in the Lakes

Just Some of Our Recent Installs

Our Glazing Services

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM WINDOWS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

TIMBER LOOK UPVC

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

ALUMINIUM LOOK UPVC

ALUMINIUM LOOK UPVC

STEEL LOOK/ HERITAGE/ CRITTALL STYLE ALUMINIUM FRENCH DOORS

ALUMINIUM LOOK UPVC

SLIM SLIDING DOORS - ALUMINIUM

SLIM SLIDING DOORS - ALUMINIUM

SLIM SLIDING DOORS - ALUMINIUM

BIFOLDING DOORS - ALUMINIUM

SLIM SLIDING DOORS - ALUMINIUM

SLIM SLIDING DOORS - ALUMINIUM

CASEMENT UPVC

SLIM SLIDING DOORS - ALUMINIUM

COMPOSITE DOORS

COMPOSITE DOORS

SLIM SLIDING DOORS - ALUMINIUM

COMPOSITE DOORS

FRAMELESS GLASS BALUSTRADES

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

ALUSPACE INTERNAL DOORS AND SCREENS

ALUSPACE INTERNAL DOORS AND SCREENS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

ALUSPACE INTERNAL DOORS AND SCREENS

CORTIZO CORNER POCKET ALUMINIUM SLIDING DOORS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

REPLACEMENT DOUBLE GLAZED UNITS & GLASS REPAIRS

Why Homeowners Choose Windows in the Lakes

7 Mistakes Homeowners Make When Choosing Aluminium Glazing.

Download our free guide to learn:

Download the guide

Trusted by Homeowners Across Cumbria

Serving Every Corner of Cumbria & the Lake District

Start the conversation

If you’re planning an extension, renovation, or new-build project in Cumbria and want aluminium or timber look uPVC glazing designed and installed without compromise, we’d be happy to talk.

Adding Details such as the below into your enquiry form helps us to understand your project fully.

Windows in the Lakes

Hours

Ready to discuss your project further?

Alternatively call us on 01768 254554 to speak to our team

Or email any questions to projects@windowsinthelakes.co.uk

WHAT CUSTOMERS THINK OF US:

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