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Bespoke Sliding Sash Windows Design Your Ideal View

Established over 20 years ago, we at Square Glazing are a leading choice for bespoke sliding sash windows. With our extensive range of energy-efficient windows, we’re confident we’ll have something to suit you. We have manufactured and installed windows for more than two decades. This means that with us, you’re guaranteed expertise that is backed by a friendly team, affordable prices and quality results. Contact us today to book your FREE consultation.

Bespoke Manufacture, Expert Installation

Our made-to-measure windows are of the highest quality thanks to our dynamic team that possesses a range of skills between them. With our experience in the glazing and glass world, we can create state-of-the-art designs and deliver outstanding results. Contact us to book your FREE consultation.

What are sliding sash windows?

Sliding, vertical sash windows retain the traditional design that complements the appearance of a traditional property. They can be kept open in any position, and as standard, our windows include child safety travel restrictors, sash horns and keyed locking mechanisms. In terms of maintenance, sliding sash windows slide up and down, and tilt making them easy to look after. Sliding sash windows are elegant and practical and are chosen by our customers for their convenience and style.

Your Choice of Sash Window Finishes

Our sash windows are available in uPVC with a variety of colour choices and have the option of double or triple glazing. We fabricate our windows using premium quality materials sourced from the leading suppliers in the industry. The benefits of uPVC double-glazed windows include the elegance of timber sash design to maintain the aesthetics of your home design. Once they arrive at your home, our window installers will verify the fit. All windows come with toughened safety glass where required, trickle vents and window restrictors which add value to your new windows.

How does it work?


Get In Touch…

Get in touch with us today to book your FREE consultation. We will discuss your requirements in depth.



Once we have confirmed the specifications of your windows, we will contact you regarding your order.


Home Visit

We visit your home before manufacture to guarantee a perfect finish and to ensure your 100% satisfaction.



We will manufacture your bespoke windows to your specifications to ensure accuracy.



We will visit your home at a time that suits you and our window installers will verify the fit.



We will be on hand from the beginning to the end of the process. If you have any queries, get in touch with us.

What are the benefits of sliding sash windows?


When your windows are closed, they form a tight seal. This helps to keep your home insulated and draught-free – therefore saving you money on your energy bills!

Bespoke Design

Sliding sash windows are attractive features on a property and replacing old or aged windows with new bespoke ones gives you the chance to put your stamp on your home.

Boosts Natural Light

Our sash windows have multiple, large panes of glass, which boost natural light within your home. Additionally, they take up minimal wall space to achieve this effect.

Enhanced Security

As all our sliding sash windows include toughened safety glass and multi-locking points you can enjoy enhanced home security.

Maximum Ventilation

Sash windows can open vertically almost halfway. This allows for far greater levels of airflow and ventilation within your home.


Our sliding sash uPVC windows can last for over 30 years if they’re maintained properly. This means that they are a fantastic investment!

How much do sash windows cost?

The cost of sash windows will vary depending on several factors. We recommend getting in touch with us for a FREE consultation.

Need something else?

Here at Square Glazing, we have also been manufacturers and installers of a range of window types and styles for more than 20 years. With us, you’re guaranteed expertise that is backed by a friendly team, affordable prices and – most importantly – quality results.

  • uPVC & Aluminium Windows
  • Casement & Flush Casement Windows
  • Tilt & Turn Windows
  • Heritage Windows
  • And much more!

Contact us today to book your FREE consultation for your brand-new windows, complete with integrated blinds!

Why choose us?

Most Trusted Sliding Sash Windows Company in Essex


20+ Years of Experience

With over 20 years of experience, you can trust that your project is in safe hands with the experts at Square Glazing and we are dedicated to premium quality results.


Bespoke Design

We aim to design, manufacture, and install bespoke sliding sash windows for you – from start to finish. We make all our windows to individual specifications.


Customer Focused

Being customer-focused is a no-brainer in this trade. With our reputation as a reliable and trustworthy company, you’ll receive a service that is second to none.

If you’re looking for bespoke, made-to-measure sliding sash windows, then you’ve found the company you’re looking for. Get in touch with us to book your FREE consultation!


Send Us a Message Today

    Call 020 8594 8559

    and let’s discuss an appointment and quote for your new windows or doors