Flush Casement Windows

Llantrisant


Retain or add character to your Llantrisant home with our range of Flush Casement Windows. Leekes has years of experience installing uPVC windows and double glazing in properties across Llantrisant and Rhondda Cynon Taff. Start your quote today for our range of flush casement windows.

The Perfect Timber Replacement

For customers in Llantrisant and Rhondda Cynon Taff wanting to replace old timber sash windows, our Flush Casement Windows offer the perfect upgrade. Unlike timber, our modern uPVC windows are relatively low maintenance by design, providing year after year of great use. These sash windows will continue to retain their quality, even after regular exposure to the South Wales weather.

You can have complete peace of mind you’ve invested in the best quality flush casement windows by choosing Leekes. Our flush sash windows are accompanied by a guarantee of quality. Even after regular exposure to the changeable Llantrisant weather, the frame of the window won’t bow, warp, flake, crack, discolour or twist, and the colour has been imbued into the profile so won’t need repainting. The only maintenance you’ll need to carry out on the frame is to give it an occasional wipe down with a damp cloth to retain the good-as-new look.

Benefits of Our Flush Casement Window Range


You will improve the heat retention capabilities of your Llantrisant home with our flush casement windows. These uPVC sash windows are designed to achieve U-values as low as 1.3 W/m2K as standard, with uPVC significantly more efficient than timber designs. We offer double glazing as standard in these uPVC windows, however, you can upgrade to triple glazing.

The multi-chambered frame of our flush casement windows will trap pockets of warm air within your Llantrisant home. This allows you to rely less upon your central heating for natural warmth. As your energy bills lessen, you can save money to spend on the things you want. With the overall energy consumption of your Rhondda Cynon Taff home lessening, the carbon footprint of your property will shrink.


The security of your Llantrisant home is something we take seriously at Leekes. That’s why we install flush casement windows that will protect your Rhondda Cyon Taff property against 21st-century burglary methods. The multi-chambered uPVC offers a great deal of strength. When combined with the panes of glazing and multi-point locking, it creates a high level of security across the frame, with no weak points to exploit.

For Llantrisant customers wanting to increase the security of our flush casement windows further, we provide the perfect upgrade. The market-leading Yale lock can be added to the design of these uPVC sash windows. This lock is accompanied by a lifetime guarantee, offering unwavering protection for your family.


We fit our flush casement windows with weather seals. These weatherseals work alongside the uPVC frame, eliminating cold draughts that could disrupt the overall comfort of your Llantrisant home. This eliminates the risk of dampness, with the trickle vents carrying standing water away from your Rhondda Cynon Taff property.

The uPVC frame of our flush casement uPVC windows will retain its quality, even after constant exposure to the South Wales weather. The Llantrisant homeowner will not be left facing the same issues that plagued timber sash windows. This means that even in the worse Rhondda Cynon Taff weather, you can have complete peace of mind your flush casement windows are keeping the bad weather out.


By choosing Leekes’ Flush Casement Windows for your Llantrisant home, you can have complete confidence that you’ve invested in the best window for your home. Our uPVC windows are fully accredited and created 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 from 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 Rhondda Cynon Taff customers peace of mind to press ahead with an installation of our flush casement windows.

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uPVC flush casement windows Llantrisant

Leekes' Price Promise

New uPVC flush casement windows for your Rhondda Cynon Taff 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.

flush sash llantrisant

Quality Guaranteed

You want to be sure when purchasing new flush casement windows for your Rhondda Llantrisant 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 Llantrisant

If you’d like to discuss Flush Casement Windows for your Llanstrisant 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 Llantrisant showroom. Call us on 0800 015 7749 to book an appointment.

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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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