Flush Casement Windows

Thornbury


Add or retain the character of your Thornbury home with our range of Flush Casement Windows. Leekes has decades of experience installing flush sash windows and uPVC windows in homes across Thornbury and Gloucestershire. Start your quote today for our range of flush casement windows.

A Great Timber Replacement

Our flush casement windows are a great upgrade for Thornbury homeowners looking to replace old timber windows. Unlike timber, these uPVC windows won’t offer any high maintenance headaches, offering year after year of excellent use. Our flush sash windows are designed to continue to retain their quality, even after regular exposure to the Gloucestershire weather.

You can have total peace of mind you’ve chosen the best flush casement windows for your Thornbury home by choosing Leekes. Our flush sash windows are accompanied by a guarantee of quality. Even after constant exposure to the changeable Gloucestershire weather, the window frame won’t bow, flake, crack, twist or discolour, with the colour imbued into the frame. This means you won’t need to repaint it, with the only maintenance required giving the frame an occasional wipe down with a damp cloth to maintain the good-as-new look.

Benefits of Our Flush Casement Window Range


You can improve the thermal performance of your Thornbury home with our flush casement windows. These flush sash windows are created to achieve U-values as low as 1.3 W/m2K, with uPVC significantly more energy efficient than timber windows. We provide double glazing as standard in these uPVC windows, with triple glazing options available.

The multi-chambered uPVC frame works to trap pockets of warm air within your Thornbury home. With our flush casement windows, you can rely less upon your central heating to warm your property. As less energy is consumed, your energy bills will lessen, freeing up money you can spend on the things you want. This means the overall carbon footprint of your property will shrink.


The security of your Thornbury property is something we take seriously at Leekes. That’s why the flush casement windows we install will secure your Gloucestershire home against modern burglary techniques. The multi-chambered frame offers a great level of strength and resistance. When this is combined with the glazing panes and multi-point locking to create a high level of security across the frame, with no weak spots that can be exploited.

For Thornbury homeowners looking to increase the security of our uPVC Flush Casement Windows further, we offer the ideal upgrade. The market-leading Yale lock can be added to the design of these uPVC sash windows. These locks are accompanied by a lifetime guarantee, providing unwavering protection for your family.


Our flush casement windows are fitted with weatherseals across the design. The weatherseals work alongside the glazing panes and uPVC frame to eliminate cold draughts that could disrupt the overall comfort of your Thornbury property. This will eliminate the risk of damp, and the trickle vents carry standing water away from your Gloucestershire home.

Even after regular exposure to the Gloucestershire weather, our uPVC flush casement windows will continue to retain their quality. This means the Thornbury homeowner won’t be left facing the same issues that plagued old timber sash windows. In the very worst weather, our flush sash windows will keep the bad weather out of your home.


By choosing Leekes’ Flush Casement Windows for your Thornbury property, you can have complete confidence that you’ve invested in the best window for your home. Our uPVC windows are fully accredited and designed in line with the latest building regulations and created to PAS24 standards. This provides you with the peace of mind that you’re getting the best window for your home.

Leekes is accredited by the likes of FENSA, TrustMark, as well as a member of the Ultraframe Ultra Installer network. We were recognised in the G19 awards, named as a finalist for Installer of the Year and Sustainability Initiative of the Year. Accreditations are something we hold with great pride as an installer, and we hope it gives our Thornbury customers peace of mind to press ahead with an installation of our flush casement windows.

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flush sash thornbury

Leekes' Price Promise

New uPVC flush casement windows for your Thornbury home aren’t always the easiest thing to fund. At Leekes, we pride ourselves on our product and feel that not only does it represent the best quality but the best affordable price. We’re so confident of this that if you find an equivalent uPVC product cheaper from another company, we’ll match it! Find out more about our guarantee here.

veka flush sash thornbury

Quality Guaranteed

You want to be sure when purchasing new flush casement windows for your Thornbury home that they are built to last and you’re getting good value for money. When customers choose Leekes, they receive a 10-year guarantee as standard with all our windows, doors and conservatories. This guarantee gives customers the confidence to plan and go ahead with their home improvement project.

Flush Casement Window Prices Thornbury

If you’d like to discuss Flush Casement Windows for your Thornbury home, contact our team today. You can call us on 0800 038 5355 or fill out our online contact form.

For those who know which colour Flush Casement Window they want, start an online quote. Just enter a few details and we’ll send a bespoke estimate, with no obligation to book.

Or why not book an appointment to see our Flush Casement windows face-to-face at our nearest showroom which is based at Dobbies Garden Centre, Cuttshead Road. You can book a visit by calling 01454 418 630.

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Our Locations

Home shot Locations

Your Local Stop for Home Improvements

Leekes' coverage area spans right across the South Wales & West England areas. We have seven showrooms right across the region, meaning there's a good chance you're closer to us than you think. Explore our showroom locations today and find the one that is nearest to you. Visit us today to discuss your project with a member of our friendly team.

leekes

Cross Hands

  • Leekes, Cross Hands Department Store
  • Business Park
  • Cross Hands
  • Carmarthenshire
  • SA14 6RB
Store Manager
Charles Larsen
Monday 07:30 - 18:00
Tuesday 07:30 - 18:00
Wednesday 07:30 - 18:00
Thursdy 07:30 - 18:00
Friday 07:30 - 18:00
Saturday 09:00 - 18:00
Sunday 10:30 - 16:30
* Selected departments only, store fully opens at 09:00 DIY, Decorating & Building departments open from 08:00
windows

Hereford

* Selected departments only, store fully opens at 09:00 DIY, Decorating & Building departments open from 08:00
leekes llantrisant

Llantrisant

  • Leekes, Llantrisant Department Store
  • Cowbridge Road
  • Pontyclun
  • Rhondda Cynon Taff
  • CF72 8XU
Monday 07:30 - 18:00
Tuesday 07:30 - 18:00
Wednesday 07:30 - 18:00
Thursday 07:30 - 18:00
Friday 07:30 - 18:00
Saturday 09:00 - 18:00
Sunday 10:30 - 16:30
* Selected departments only, store fully opens at 09:00 DIY, Decorating & Building departments open from 08:00
doors

Melksham

  • Leekes Melksham Department Store
  • Beanacre Road
  • Melksham
  • Wiltshire
  • SN12 8AG
Monday 09:00 - 18:00
Tuesday 09:00 - 18:00
Wednesday 09:00 - 18:00
Thursday 09:00 -18:00
Friday 09:00 - 18:00
Saturday 09:00 - 18:00
Sunday 10:30 - 16:30
* Selected departments only, store fully opens at 09:00 DIY, Decorating & Building departments open from 08:00
conservatories

Swindon

* Selected departments only, store fully opens at 09:00 DIY, Decorating & Building departments open from 08:00
double glazing

Thornbury

* Selected departments only, store fully opens at 09:00 DIY, Decorating & Building departments open from 08:00
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