The design of flush uPVC windows takes inspiration from traditional 19th century timber joinery, allowing the sash to sit flush in the frame. They are ideal for homeowners looking to bring a traditional charm to their home. We also provide aluminium windows if you require an alternative to uPVC windows for your home. Many homes in conservation areas or period properties need a traditional timber-style window to meet planning rules. Our UPVC flush casement windows offer the perfect alternative. The sash sits flush within the frame for a clean, seamless look—just like traditional timber. Choose from woodgrain foils to mimic timber or opt for smooth, modern finishes to suit contemporary homes. Get the classic look without the hassle.

Double glazed upvc flush windows, like the rest of our upvc window range, are A rated as standard. They offer a lower cost upvc window with higher thermal benefits than timber – in addition to being completely secure. Flush sash casement windows are the latest generation of uPVC windows. They offer the realism of a traditional pre-1932 timber window combined with 21st-century thermal benefits.
Bypassing their timber alternatives, our flush sash windows are created using our market-leading uPVC profile. This means that they can achieve an A+ standard of thermal efficiency.
Timber frames tend to be expensive, need regular maintenance and can be difficult to replace. Our Flush uPVC window system naturally replaces traditional timber windows with all the benefits of modern technology.
Slim sight lines and symmetrical in design coupled with either period or contemporary hardware options to suit any project as well as our extensive composite door range.
South Yorkshire Windows provide 10 standard colours and 100’s of RAL colours, the choice is yours.
Add style and personality to your home with our range of coloured uPVC window frames. Whether you’re after something classic or contemporary, we offer a wide choice of colours to suit any property. Popular options include soft tones like Agate Grey, Chartwell Green, and Cream—perfect for traditional homes or period-style properties. For a more modern look, Anthracite Grey and Black offer a bold, clean finish that pairs well with new builds and minimalist designs. All our coloured uPVC frames are expertly installed and finished with durable, weather-resistant coatings. This ensures long-lasting colour that won’t fade, peel, or crack—keeping your windows looking great for years to come. Customise your window frames to complement your exterior and create a look that’s truly yours.

White

Cream

Agate Grey

Chartwell Green

Slate Grey

Anthracite Grey

Rosewood

Black-Brown

Golden Oak

Irish Oak
Available in 70mm and 80mm options with a choice of both double and triple glazed units, our flush windows all come internally glazed as standard. Our supreme energy efficient EnergyPlus 6-chamber profile offers A+ window energy rating with ease – together with a wide choice of colours, finishes, hardware and glazing options.

Level 1 Flemish
Level 1 Warwick

Level 2 Chantilly

Level 2 Minster

Level 2 Pelerine

Level 2 Sycamore

Level 3 Autumn

Level 3 Digital

Level 3 Taffeta

Level 4 Charcoal Sticks

Level 4 Contora

Level 4 Florielle

Level 4 Mayflower

Level 4 Oak

Level 4 Stippolyte

Level 5 Arctic

Level 5 Everglade

Level 5 Satin
At South Yorkshire Windows, we supply and install high-quality uPVC flush windows that combine the charm of traditional timber with the benefits of modern materials. Each window is made to measure in our Yorkshire factory, ensuring a perfect fit and a clean, seamless look where the sash sits flush within the frame.
Our flush casement windows are crafted using durable, low-maintenance uPVC that won’t warp, crack, or discolour over time. You’ll get the appearance of timber without the upkeep, making them ideal for period homes, conservation areas, or anyone who wants a classic style with modern performance.
With a wide choice of colours, woodgrain finishes, and glazing options, you can customise your windows to suit your home perfectly. Backed by trusted reviews and years of experience, we make it easy to upgrade your windows with confidence and quality.