When it comes to sash windows, the type of glazing you choose plays a significant role in your home’s insulation, security, and privacy. Our UPVC sash window glazing options cater to a variety of needs, from energy efficiency and noise reduction to privacy and aesthetic appeal. Whether you’re looking to improve your home’s thermal performance or enhance its overall look, we have the perfect solution.

The 24mm insulated glass units are double glazed with an argon gas insert as standard to reduce the heat conductance between the glass panes. All our sash windows feature 4mm clear glass on the outside and 4mm clear Low E glass on the inside, as well as a warm edge spacer bar.
You have the option of upgrading to acoustic lamination for excellent noise reduction. This upgrade features two 3mm pieces of glass that are put together with a noise reducing interlayer.
Obscure glass is typically utilised in bathrooms, shower rooms and other private areas. Our sliding sash windows can be specified with a variety of different glass patterns and obscurity levels to suit your needs.
Our obscure glass range provides both substance and style. All patterns are classified according to their level of obscurity in relation to each other, with one being least obscure and five being most obscure.
What obscure glazing patterns are available?
“Our range of glazing options allows for flexibility in meeting your home’s specific needs, whether it’s improving thermal insulation, reducing noise, or maintaining privacy. With modern innovations in glass technology, these options also support better energy efficiency, offering long-term benefits for your property. By selecting the right glass type, you’ll improve your living environment while maintaining the traditional charm of your sash windows.”
The standard double-glazing option with 24mm insulated glass units and an argon gas insert helps reduce heat loss in your home, improving energy efficiency and lowering heating costs.
For those living in noisy areas, the acoustic laminated glass upgrade provides excellent soundproofing. The two layers of glass with a noise-reducing interlayer ensure a quieter, more peaceful sanctuary for you to enjoy.
Obscure glass options offer an ideal solution for bathrooms, shower rooms, and other private areas. With various patterns and levels of obscurity to choose from, so you can enjoy both privacy and style.
The diverse range of obscure glazing patterns, from Bark to Westminster, lets you add a decorative element to your windows, combining functionality with aesthetic appeal. Each pattern offers a unique level of obscurity.
Our process starts with a personalised consultation where a door specialist listens to your needs and recommends styles, colours, glazing and hardware to suit your home's character. Once you’ve made your selections, we take precise measurements to ensure a perfect fit and arrange an installation date that works for you. Our experienced team carries out the installation with care and precision, ensuring every door and window is properly fitted, and we'll guide you through how to operate and maintain your new products once the work is complete.
"We are very complementary of the Timber Windows of Horndean & Winchester team. The installation and aftercare has been fantastic, and there was always great communication throughout."
"Could not fault Timber Windows of Horndean, everything as quoted and all on time. The work was done professionally and cleanly."
"We were looking for hardwood and excellent quality which we found here. We loved that it was a family business - the sales personnel and the fitters answered all my questions immediately or found out and gave feedback as soon as they could - amazing!"
"The reason for choosing Timber Windows of Horndean & Winchester was because I was recommended by a friend, who has used the company before and was very pleased with their work. The whole process moved very smoothly, with all the appointments kept on time. All the staff are friendly and courteous. The installation teams were excellent and the clean up at the end was impressive. I would recommend Timber Windows of Horndean & Winchester. "
