
Aluminium Windows
Based in Chalfont St Giles, Buckinghamshire, OpenSquare Glazing are installers of stunning aluminium windows. Working with new build projects, developers, architects and other contractors, we operate throughout London and the home counties, including local areas such as Amersham, Henley, Marlow and Beaconsfield. Request a free online aluminium window quote today.
The Benefits
Full Design Service
Our team can produce full CAD drawings for your new build project, wherever it is across London or Buckinghamshire. You can see your development come to life with our aluminium windows. Our process is comprehensive, taking the hassle away at your end and instilling peace of mind.
Expert Installation
We use our own team of fitters to complete efficient installations of your aluminium windows. Many of our team have worked in the double glazing industry for decades, making window installations second nature. We take a duty of care with every development project we work on.

Aluminium Window Prices Buckinghamshire & London
Request a quote for a set of aluminium windows today. We have an online quoting engine you can use to request pricing for the aluminium window design you’re after. You can also contact our team if you have any enquiries about our prices or our services here in Buckinghamshire.

Smart Heritage Aluminium Windows
Smart’s Alitherm Heritage window range lead in both design and performance. Available as both casement and as tilt and turn profiles, they offer slim sightlines with a framework that can accommodate both double and triple glazing. This allows these aluminium windows to provide a great energy performance for your new build’s end users.
With casement or fixed casement profiles, these aluminium windows can be tested to PAS 24:2016 security standards. With multi point locking systems as standard, these aluminium windows deliver the right standard of durability and home protection your new builds deserve. They are also fully weatherproof, adhering to various Kitemark certifications.

AluK Slimline Aluminium Windows
We are also proud to stock and install AluK’s range of slimline casement aluminium windows. Like the Smart windows, they deliver a blend of style and substance, making them a versatile option for any new build development. They achieve a Window Energy Rating of ‘B’, making them a thermally efficient addition to any new homes or apartments.
They come with PAS 24:2016 certification, and can additionally be tested to Secured by Design. This makes them one of the most durable aluminium windows on the market. All the while, ultra slim sightlines allow the maximum amount of light transfer. As a client of ours in London or the home counties, you can specify the exact colour of your AluK aluminium windows as well.
Technical Specifications
Performance
Value
U-Value (W/m²K) (Double glazing)
Up to 1.4
U-Value (W/m²K) (Triple glazing)
Up to 1.0
Kitemark
KM 81543 & KM 81580 available
Security
PAS 24 & Secured by Design available
Start Your Quote Today
Use our quoting engine here to request a price for the aluminium windows we can install. We work with new build developers, as well as architects, contactors and other specifiers. We even have a sister company we can point you in the direction of if you’re after replacement windows or doors. If you have any questions about our aluminium windows, contact us via our online form.
Frequently
Asked
Questions
Find the answer to a few selected FAQs here. If you have anything else to ask about our aluminium windows or our service, speak to our team in Chalfont St Giles, Buckinghamshire today.
Are aluminium windows thermally efficient?
They are! Our aluminium windows can come with a polyamide thermal break, ensuring they deliver an outstanding thermal performance.. The end users can enjoy outstanding, long term energy efficient in their new build. They can enjoy lower carbon footprints.
Are aluminium windows better than uPVC?
We certainly believe so. Aluminium offers sleeker, high end aesthetics, without compromising on performance. The slimmer sightlines allow more natural light into the room, which is excellent for making your new build properties feel brighter, warmer and more spacious. As a lightweight material, aluminium is also incredibly easy for us to install.
What area do OpenSquare Glazing cover?
We are based in Chalfont St Giles, which is in south east Buckinghamshire. As a result, we are well placed to serve the home counties, as well as those in and around the city of London.
If you believe you’re in our coverage area but would like confirmation, simply get in touch. If you are, we can begin our discussions regarding your new build development and our aluminium windows.