Windows

We supply and fit a comprehensive range of high-quality windows designed to suit every style of home — from period properties to new builds. All windows are energy efficient, secure and made to measure.

Tilt and Turn Windows

Tilt & Turn Windows

Tilt and Turn windows offer the best of both worlds — tilt open from the top for gentle ventilation, or turn the handle to open the whole window from the side for full airflow and easy cleaning. Ideal for upper-floor rooms and modern homes.

Opens two ways for flexible ventilation
Easy to clean from inside the home
Excellent draught and weather sealing
Multi-point locking for security
Available in a wide range of colours
Get a Quote
Bay Windows

Bay Windows

A Bay window protrudes outward from the main wall, creating a beautiful focal point on the outside and a spacious alcove inside. They flood rooms with natural light and add significant kerb appeal and value to your home.

Creates a stunning architectural feature
Floods rooms with natural light
Adds kerb appeal and property value
Bespoke sizing and angles available
Can incorporate a window seat internally
Get a Quote
Flush Casement Windows

Flush Casement Windows

Flush Casement windows sit completely flush within the frame, giving them a crisp, clean profile. They are perfect for period properties where planning guidelines require a more traditional look, but can also be used with coloured foils for a striking modern finish.

Ideal for period and listed buildings
Timber-look aesthetics in low maintenance uPVC
Available in traditional and contemporary colours
Excellent thermal and acoustic performance
Suitable for both heritage and new build properties
Get a Quote
Aluminium Windows

Aluminium Windows

Aluminium windows offer a sleek, modern aesthetic with slim sightlines that maximise glass area and natural light. Incredibly strong and durable, they're the ideal choice for contemporary homes, large openings and properties where a refined, architectural look is important.

Ultra-slim sightlines for a contemporary look
Stronger than uPVC — ideal for large spans
Thermally broken for excellent insulation
Available in any RAL colour, inside and out
Low maintenance and highly durable
Get a Quote
Sash Windows

Sash Windows

Sash windows are a timeless classic — sliding vertically to open and lending a traditional elegance to any home. Our modern uPVC sash windows replicate the look of original timber sashes while offering far superior thermal performance, security and longevity.

Authentic timber-look in low maintenance uPVC
Spiral balances for smooth, effortless operation
Tilt-in sashes for easy cleaning
Available with run-through horns for period homes
Excellent draught-proofing and thermal efficiency
Get a Quote

Why Choose Windows from Duke Window Services?

Strong & Secure

Every window is built with multi-point locking as standard, so your home stays protected.

Wide Colour Range

Choose from a vast range of colour finishes and foils to perfectly complement your home's style.

Made to Measure

Every window is manufactured specifically for your home ensuring a perfect fit every time.

FENSA Certified

All our window installations are FENSA certified, protecting you legally and financially.

Could new windows cut your energy bills?

Select your property type and current windows to see an estimated annual saving with our A-rated double glazing.

Tell us about your home

Savings shown are the difference between keeping your current windows and replacing them with our A-rated double glazing — some of the most thermally efficient available in the UK.

Your current windows

Replaced with

DWS A-rated uPVC windows

Energy rating A · U-value from 0.66 W/m²K

You could save approximately

£26 – £65

per year on energy bills


Over 5 years £130 – £325
Over 10 years £260 – £650
CO² reduction up to 105 kg/yr

Energy rating upgrade

Get a free quote →

Savings estimates are based on Energy Saving Trust data for a gas-heated home in England, Wales or Scotland, using published fuel price figures. Actual savings will vary depending on your home's size, heating habits and existing insulation. This tool provides indicative figures only — contact us for a personalised assessment.

Recent Installations

A selection of windows we've recently installed across the East Grinstead area.

Bay Window Installation
Flush Sash Window Installation
Sash Window Replacement
Bay Window Installation
Tilt and Turn Window Installation
Window Installation East Grinstead

Interested in New Windows?

We'll come to you, take measurements and give you a no-obligation quote. Free home survey available.