Why Choose Flush Casement Windows?

A+ Rated for Energy Efficiency

Our windows are designed with energy efficiency in mind, ensuring a comfortable temperature inside your home while reducing energy consumption.

Environmentally Friendly

We are committed to sustainability. Our flush casement windows are 100% lead-free and fully recyclable, making them an eco-conscious choice.

Low Maintenance

Unlike traditional timber windows, our flush casement windows require minimal upkeep, giving you more time to enjoy your home without the hassle.

Enhanced Security

Feel at ease knowing that our flush casement windows are internally beaded and fully secure, deterring potential intruders while keeping your loved ones safe.

Variety of Options

From opening configurations, colours, and finishes to hardware and glazing choices, we offer a wide range of customisation options to suit your style and preferences.

Ideal Compatibility

Whether you want to bring a touch of traditional charm to your home or need to comply with planning or environmental restrictions, our flush casement windows are the ideal solution.

Cream flush sash windows uPVC

Timeless Elegance with a Modern Twist with Liniar Original Flush Sash Windows

Our Liniar Original flush sash windows are renowned for their timeless appeal and exceptional performance. Crafted to mimic the appearance of traditional timber windows, the Liniar flush sashes boast a flush finish on the external faces, adding an unmistakable touch of elegance to your home.

These stunning windows offer more than just aesthetics. They come in A+ rated energy-efficient options and can achieve an impressive U-value as low as 0.8 W/m²K with triple glazing. You'll not only enjoy a comfortable home but also contribute to reducing your carbon footprint.

With hassle-free maintenance and a wide range of colours and finishes to choose from, these windows truly exemplify the perfect blend of classic charm and contemporary convenience.

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The Epitome of Innovation and Elegance with Our Liniar Resurgence Flush Sash Windows

Experience the best of modern window technology with our Liniar Resurgence flush sash windows. These uPVC windows retain the aesthetic appeal of traditional timber windows while providing superior energy efficiency, security, and durability.

The Resurgence range features a 70mm sash incorporated within an 80mm frame, eliminating any overlap commonly seen in standard uPVC windows. This innovative design ensures a sleeker profile while maximising both weather resistance and thermal insulation with its double-rebated weather seal and co-extruded bubble gasket.

To further enhance security, the Resurgence series has passed rigorous BSI security testing, obtaining prestigious accreditations such as PAS24 and Part Q compliance. The A+ energy rating guarantees optimal efficiency, contributing to lower energy bills while keeping your home comfortably warm.

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Brown uPVC flush casement windows

Optima Flush Casement Windows for the Timber-Look Solution

Boasting a flush design that perfectly emulates the traditional timber frames, Optima Flush Casement Windows add an authentic touch to heritage homes and buildings. Equipped with exceptional thermal performance, these windows can achieve an incredible U-value of 0.8 W/m²K along with an A++ energy rating.

The mechanical jointing ensures a seamless finish, while the inclusion of a dummy sash creates a balanced and symmetrical look. With its deep bottom rail, authentic hardware such as monkey-tail handles and dummy peg stays, plus a wide array of colour options including period and dual colours, our Optima Flush Casement Windows can be tailored to suit your aesthetic and practical needs.

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Use our online window and door designer to create the perfect quote and get exactly what you want!

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Blue flush casement window

Frequently Asked Questions

Explore our FAQs to find answers to additional questions you may have about our products or services. If you can't find the answer you're looking for, contact us and we'll get back to you as soon as we can.

Are your flush casement windows suitable for period properties?

Absolutely! Our flush sash windows seamlessly blend modern performance with traditional charm, making them perfect for period properties and conservation areas.

What glazing options do you offer for flush casement windows?

We provide a range of high-quality glass options, including double glazing, triple glazing, and acoustic glass options supplied by industry-leading brand Pilkington.

Can your flush casement windows enhance the security of my home?

Certainly! Our flush casement windows are internally beaded, ensuring maximum security against potential intrusions.

Do you offer installation services in the South West region, including Devon and Cornwall?

Absolutely! DNA Window Solutions covers the entire South West region, providing professional installation services to customers in Devon and Cornwall.

Can I customise the hardware and finishes of my flush casement windows?

Yes! We offer a wide range of hardware styles, colours, and finishes, allowing you to personalise your flush casement windows to effortlessly match your home's aesthetics.


What do our customers say?

Good competent and helpful people

We had all our guttering replaced in our large house in Yelverton. Good competent and helpful people from quotation, administration and getting the work done at a very good price. Well done and thanks.

Roger Putt

August 2023

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Brilliant service

Brilliant service from start to finish, so happy to have a door where there used to be a window. This is an absolute game changer for our household. Thank you so much.

Hayley Carter

August 2023

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Highest praise

What a fantastic company! Great communication, outstanding work and service. Dave and Sam managed to fix our broken window frame quickly and efficiently. Highest praise.

Jana W

20 July 2023

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Very professional and reliable

Very professional, easy to work with, very reliable and standard of workmanship is exemplary. Would highly recommend to anyone looking to have work carried out on their property.

Marlon Johnson

21 March 2023

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Attention to detail

The work done and the attention to detail was of a very high standard. I will certainly be using them in the future.

John Minhinnick

15 April 2023

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Porch installation

Had porch installed more than pleased with it looks great Dave and Sam worked there socks of they never stopped even for a break friends and neighbours also love it would highly recommend this firm

Plymouth Customer

September 2023

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