Prices starting from only

£102.56

All our prices include VAT

Flush UPVC Windows

Discover our range of made-to-measure flush casement UPVC windows and get an instant price today.

Design your UPVC flush windows

Prices starting from only

£102.56

All our prices include VAT

Choose your flush casement window style and get an instant price

French

How to order your UPVC flush casement windows

Designing and ordering your new flush windows direct to your UK address is quick and easy with our intuitive online tool.

1. Select your style and enter the measurements

Choose your flush casement window style and input your dimensions.

2. Customise and get an instant price

Pick your frame colour, handles and glazing to get an accurate price right away.

3. Easy checkout and fast delivery

Confirm your choices at secure checkout and choose fast, convenient UK delivery.

What are flush casement windows?

Unlike standard casement windows with protruding sashes, flush casement windows feature sashes that sit completely level with the outer frame. This creates a smooth, flat surface and a clean, streamlined finish.

Built using the premium Heritage 2800 profile, which replicates classic timber windows, they are ideal for both period and modern homes. Our flush fit windows provide excellent energy efficiency, with A+ double glazing as standard and optional A++ triple glazing that locks in heat and lowers energy bills.

Not sure which style is right for your home? Read our Flush vs Casement Windows Guide to compare your options.

Why choose flush fit casement windows?

Create a seamless look: Flush casement windows sit level within the frame, giving your home a clean and refined appearance.

Enhance kerb appeal: Their elegant, understated design can elevate the look of your property from both inside and out.

Maximise natural light: Slim frames and large glass areas allow more daylight to flow into your living spaces.

Benefit from low maintenance: Available in durable materials and finishes, flush casement windows are designed to look great with minimal upkeep. Plus, the lack of external overhangs means there's nowhere for were dirt and water to collect.

Suit any property style: Their timeless design complements both period homes and contemporary properties.

Expert Insight

Flush UPVC windows designed for style and performance

Flush casement windows are designed to give homeowners the best of both worlds: the sleek, elegant lines of classic timber and the durable, energy-saving benefits of modern UPVC. Our online tool lets you fully customise the frame colours, glazing and hardware to match your home's character perfectly.

By including premium security features and maximum insulation as standard, we ensure you get a premium product without the premium price tag. Plus, with a guarantee on every order, you have total peace of mind from checkout to delivery.

Design your flush window

Dan Richards

Operations Director

at Modern UPVC Windows

______

Dan works closely with the manufacturing and installation teams, bringing hands-on knowledge of window and door performance, product quality and practical specification requirements.

Why choose us for UPVC flush casement windows?

Energy efficiency

Flush casement windows deliver excellent energy efficiency with A+ rated double glazing as standard. Argon gas-filled units and a heat-reflective coating help retain warmth in winter and block excess heat in summer, reducing energy costs.

Compared to aluminium or timber, UPVC offers better insulation and requires less maintenance. For even higher performance, upgrade to A++ triple glazing with an extra pane of Pilkington KS glass for greater comfort and efficiency.

++ Rating

View certificate

Quality craftsmanship

Our flush casement UPVC windows are precision-made to your exact specifications, ensuring a flawless fit for your home. Built using the durable and stylish Deceuninck 2800 Heritage profile, they combine traditional aesthetics with modern performance.

We also offer a 10-year guarantee on all of our windows, giving you added peace of mind.

Over three decades of proven expertise

With more than 30 years of industry experience, we've become a trusted UK manufacturer of high-quality windows. Our team delivers windows that exceed expectations in both performance and appearance. Homeowners and trade professionals across the country choose us for our reliability, attention to detail and long-standing reputation for excellence.

Find out more about us

Advanced security

Our flush windows are built with security in mind, meeting PAS24 standards for enhanced protection. Each window includes a robust multi-point locking system from Yale, featuring shootbolt locks for even greater resistance against forced entry.

Designed to offer peace of mind without compromising on style, our windows keep your home safe and secure.

Competitive pricing

We're committed to offering top-quality windows at competitive prices. Use our easy online designer tool to customise your windows and get an instant, no-obligation price.

If you find a like-for-like product for less elsewhere, let us know and we'll match it to ensure you're getting the best value without compromising on quality.

*Terms & conditions apply.

What are the delivery and installation options?

We provide fast, reliable delivery throughout the UK, along with professional installation services in selected postcodes.

Choose from:

Delivery only: Get your flush casement windows delivered directly to your home.

Professional installation: Comprehensive service including survey, removal and recycling of old windows.

Collection: Conveniently collect your order from our local warehouse.

How to customise your flush casement windows

Match your flush fit UPVC windows to your home with our wide range of custom options, from glazing and blinds to hardware finishes. We also have a range of Flush French window styles to choose from.

Glazing: Our windows come standard with ultra-efficient A+ rated double glazing, with the option to upgrade to A++ triple glazing. Toughened, laminated and acoustic safety glass options are also available to suit your requirements.

Integral blinds: Blinds are sealed inside your windows and available in cordless, dual-sided and corded styles for safe, hassle-free operation.

Handles & accessories: Personalise your windows with a variety of stylish hardware finishes.

Obscure glazing options: Select from frosted, textured, patterned or decorative glass for added privacy without losing access to natural light.

Decorative bars: Add character with Georgian, Astragal or traditional lead bars, offered in multiple layouts to complement your home.

Selection of external cills: Choose from various external cill options to enhance the look and weather protection of your windows.

Window restrictors: Restrictors increase safety by limiting how far your windows open, providing peace of mind for families and busy households.

What colour options are available for flush windows?

Our flush casement windows come in a range of stylish colours and authentic woodgrain finishes to suit any home, with dual-colour and custom RAL colour matching options available.

Flat White

White Grain

Cream

Chartwell Green

Agate Grey

Anthracite Grey

Anthracite Grey - Matt Smooth

Black - Matt Smooth

Black Grain

English Oak

Irish Oak

Golden Oak

Nut Tree

Rosewood

Bespoke Colours

All sprayed finishes are professionally applied using an advanced coating system and come with a 10-year guarantee for long-lasting colour and durability.

Frequently Asked Questions

Why are flush windows suited to conservation areas?

Flush casement windows replicate traditional timber, making them ideal for period homes and suitable for many conservation areas. They offer a classic look with all the benefits of modern UPVC, low maintenance, energy efficiency and durability. We always recommend checking with your local planning or conservation officer before installation.

Are flush windows more expensive?

UPVC flush windows can be slightly more expensive than standard casement windows due to their more intricate design and traditional detailing. However, the added aesthetic appeal, energy efficiency and suitability for conservation areas often make them a worthwhile investment. Use our online designer tool for an instant, competitive price.

How long does delivery take for flush windows?

We offer fast delivery across the UK, with lead times depending on your selected design options. For the most up-to-date estimates, visit our delivery page.

Can I install flush casement windows myself?

Yes, DIY installation is possible, and we offer delivery or collection to suit your needs. For a hassle-free option, we also provide professional installation in selected UK postcodes.