Supply and Install in the UK

Top UK’s installer for high end composite window systems.

Our work principle

Unwavering Investment in Excellence

ADCO Glazing has continually invested in business development, reflecting our commitment to offering exceptional service.

Since its inception in 2011, our company has continuously grown and consistently invested in research and development to provide high-quality services.

With over 22 years of industry experience, we have crafted an industry-leading reputation for delivering projects to an exceptionally high standard.

No project is too big for us, and as Velfac and Rationell all acknowledge ADCO Glazing’s vast experience installing their products throughout the UK, you can be confident that our work comes highly recommended by industry experts.

highly skilled professionals

What is glazing?

Glazing is the process of covering or replacing a surface with transparent material by combining it with molten
glass, molten polyester resin, or other plastics. The opaque sheet of protection created by glazing protects your windows and doors from natural sunlight, heat, humidity and rain.

When you opt for glazing services, then not only will you have a beautiful aesthetic appeal, but you will also be able to save on your energy bills. Glazing services help regulate heat transfer inside your home as well as outside, so you don’t have to worry about cold drafts coming in through your windows!

Glass ratio (Ff)

The glass ratio is the proportion of glazing to an opaque surface in a wall. Also called window-to-wall ratio, it is expressed in percentage, and it is a key variable in façade design that affects energy performance in buildings.

U-value (Uw – Ug)

A U-value value shows, in units of W/m²K, the ability of an element to transmit heat from a warm space to a cold space in a building and vice versa. The lower the U-value, the better insulated the building element.

For windows, the U-value is denoted Uw, while the U-value of the glass is denoted Ug.The U-value (Uw) of a window depends, among other factors, on the amount of glass in relation to the frame.

Energy balance (Eref)

The energy balance of a window is the most accurate method to assess its energy performance. It is an equation that factors in the heat gains and heat losses and is weighted by the climatic conditions. In other words, Eref is calculated as the difference between the window’s g-value (the ability of the window to utilise solar heat) and U-value (the window’s ability to keep the heat inside): Eref = Gw – Uw.

When Eref is positive, the window lets more heat in than it lets out. In terms of energy, it is, therefore, best to use windows that combine a high g-value with a low U-value so that Eref becomes positive—the bigger, the better. Eref is expressed in kWh/m2/year.

Solar heat gain (Gw, Gg)

G-value (sometimes called a Solar Factor or Total Solar Energy Transmittance) measures how much solar heat is allowed through the window. If the g-value is, for example, 0.65, the window lets 65% of the solar energy pass through into the building. The lower the figure, the less solar heat transfers from outside to the interior, whereas a higher figure allows more in.

Daylight transmittance (LTg)

Daylight transmittance is specified in a percentage measure and corresponds to the amount of daylight that enters through the window. The higher the LTg value, the more visible light passes through the interior.

Edge region temperature

The internal surface temperature of windows is not uniform. The edge region temperature is the surface temperature at the edge of the windows, which is commonly an area where temperatures drop. This can lead to heat loss and condensation, so it’s an element to consider avoiding heat loss.

Linear thermal transmittance (Ψ)

The linear thermal transmittance is a quantity describing the influence of a linear thermal bridge on total heat flow. Once installed, it indicates the heat loss through a window and is measured in W/m²K.

our services

Committed to Excellence Across the Glazing Spectrum

At ADCO Glazing, we take pride in offering a comprehensive suite of services that cater to various customer requirements. We understand that every project has unique demands and expectations, and our service range is designed to meet these diverse needs, ensuring our clients receive the exact support they require.

Tailored Installations

We specialise in a multitude of window installations, including curtain walling, window walling, and punched-hole windows.

Our team of professionals can deliver an installation-only service, seamlessly integrating with existing project plans and ensuring your windows and doors are installed to the highest standards.

End-to-End Solutions

We work with you right from the concept phase, helping design the perfect windows and doors for your project, sourcing them from reliable suppliers, and completing the installation.

Our full-spectrum project management services allow us to take on projects up to an agreed value, ensuring a seamless, stress-free experience for our clients.


We understand that reliable aftercare is just as crucial as the initial installation. To provide you with enduring peace of mind, we supply trained operatives for maintenance contracts.

Our maintenance professional engineers are trained and equipped to handle routine upkeep, emergency repairs, and replacements, ensuring your installations stay as good as new for years to come.

Custom Solutions

At ADCO, we believe in the power of personalisation. We work closely with our clients to understand their unique needs and preferences.

Our services are built on a foundation of integrity, excellence, and a deep understanding of our client’s needs. We are not just a chosen service provider, we are a partner committed to bringing your dream projects to life.

Our projects

Discover the brilliance of ADCO Glazing through our gallery of projects, where innovation meets elegance in every pane of glass. Explore our showcase of architectural masterpieces, each a testament to our commitment to quality and craftsmanship.

our clients & partners testimonals