Flush casement windows combine classic styling with modern performance, creating a clean, understated finish that sits flat within the frame. We supply and install made-to-measure uPVC flush casement windows using the Rehau Rio Flush Fit system.
What Are Flush Casement Windows?
Flush casement windows are designed so the opening sash sits level with the outer frame when closed, creating a smooth, flat finish. This style reflects traditional timber windows while offering the modern benefits of uPVC, including improved insulation, security, and low maintenance.
Fully Customised to Your Requirements
All of our flush casement windows are made to order, giving you complete control over the look, feel, and performance of your installation. Options include:
- Colour: Available in any RAL colour, with dual-colour finishes
- Hardware: Choice of Monkey Tail or Tear Drop handles, plus a range of other modern and traditional finishes.
- Glazing Options: Double, triple, toughened, clear, obscure, decorative lead, bevelled glass, Georgian bars, astragal bars, and integral blinds.
- Optional Features: Fully welded, Mechweld or fully mechanical joints depending on design preference, Radlington cill (uPVC – R7), trickle vents (standard or concealed), marine-grade finish (aluminium), restrictor hooks, and slimline or premium frame options (aluminium).
Every flush casement window is designed to match your home, meet modern performance standards, and offer long-lasting security and efficiency.
Secure & Energy Efficient
Flush casement windows from Wirral Double Glazing are built to the highest standards:
- Multi-point locking as standard
- Upgrade options for PAS 24 and Secured by Design
- U-values as low as 1.2W/m²K with the right configuration
- A minimum B rating for thermal performance
- Fully compliant with current Building Regulations
- FENSA certification included where applicable
Why Choose Wirral Double Glazing for Your Flush Casement Windows?
Decades of Experience
We’ve been serving homeowners across Wirral for over 30 years, combining traditional workmanship with modern technology.
High-Performance Products
All flush casement windows are manufactured using trusted systems from leading UK suppliers such as REHAU.
No Sales Pressure
You’ll receive clear, expert advice with no obligation. Our in-house team manages everything from the survey to the installation.
Fully Accredited
We work to current regulations and best practices, with FENSA certification issued where applicable.
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Roger Dawe
Trustindex verifies that the original source of the review is Google. Another excellent job done by Thextons. We have been involved with them and A W Law previously for decades and a couple of the original units had failed. From contacting them with the issue right through to John coming today to fit them absolutely spot on. Thank you.
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Natalie Papworth
Trustindex verifies that the original source of the review is Google. Excellent service my new stable back door was fitted today. The door is beautiful and the mechanics of the lock mechanism extremely secure and the seals, door handle, locks and hinges are excellent too. It has immediately made a difference to the tempeture in my kitchen with no draughts 🙂 John did an excellent efficient and really tidy job fitting the new door and frame ,everything was left clean and tidy and the old door and frame were taken for disposal. I would thoroughly recommend this company for there excellent service, friendly and helpful staff, there efficency and the superb quality of there products . Thankyou Thextons from a very happy customer 🙂
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Conor Turnbull
Trustindex verifies that the original source of the review is Google. Over the moon with my new Windows, Alan, Luke, Matty and Craig are a really friendly, tidy and well mannered fitting team, would definitely reccomend, thanks lads
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Cathy Foulger
Trustindex verifies that the original source of the review is Google. Would definitely recommend these guys they were so friendly polite and a joy to have in my home.
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Jean Crate
Trustindex verifies that the original source of the review is Google. Amazing bunch of guys very polite friendly and helpful and respectful
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Stephanie Bell
Trustindex verifies that the original source of the review is Google. Polite and efficient team. Very pleased with results. Will use again
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chris parsons
Trustindex verifies that the original source of the review is Google. Such a fantastic process from start to finish for our new double glazing to be fitted, clear, concise communication throughout. Everyone we have dealt with at Thextons has been so helpful, friendly and knowledgeable, from office staff to the fitters and all in between. We did not expect all 13 windows to be completed within two days, everywhere cleaned up and all rubbish taken away, with absolutely zero damage to any plaster/brick work. So very happy. Thank you Thextons, we will certainly recommend to friends and family, and use in the future for any building works we need doing.
Get a Quote for Flush Casement Windows
Looking to upgrade your property with stylish, energy-efficient flush casement windows? Our team is here to help.
Call us: 0151 608 2278
Or use our Contact Form
Get a Quote for Flush Casement Windows
Looking to upgrade your property with stylish, energy-efficient flush casement windows? Our team is here to help.
Call us: 0151 608 2278
Or use our Contact Form
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89 Google Reviews
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6 Facebook Reviews
4.3
8 Trustpilot Reviews
