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New Aluminium Casement Windows for Your Next Installation

Especially in residential properties, there is a growing awareness of the need to improve energy efficiency. Our team at D&I wants to promote our windows in light of the fact that the government is planning to introduce more regulations on the thermal practicability of products. Aluminium casement windows are thought to be one of the home improvement industry’s most energy efficient models. Aluminium is also widely recognised as the material that is the most long-lasting. When we use each material together, we can create a thermal barrier that is superior to anything that has come before.

As residents of the UK, we are familiar with the variable nature of the weather. Condensation and chilly draughts can be intolerable, so get in touch with our staff so that we can help you select the most appropriate materials for your upcoming home renovation. If you want your Harrogate property to remain warm and dry throughout the year, aluminium casement windows, either top hung or side hung, are the way to go.

Tight Corners

We are pleased to promote the cutting edge craftsmanship of Sheerline, which entails placing each screw inside the mitre joints to produce angles that are exactly 90 degrees and free of any protrusions. Because of their adjustability, the aluminium casement windows that we offer are an excellent choice.

These corners are so uniquely designed that they create what is known as a “beadless” window, which makes it significantly more difficult for unauthorised individuals to break the window’s glass. With our aluminium casement windows, you’ll have a solution that is both secure and flawless.

Ultra Secure

One of the most important qualities of a good aluminium casement window is how secure it is. Our staff makes it a point to ensure that we have a multipoint locking system in stock so that we can supply your loved ones and your home with the most modern materials and the most secure locks.

These aluminium casement windows have been designed with additional space within the frame so that the locking mechanisms can be installed more quickly and easily. The window’s incredible sightlines will not be compromised in any way by the locks because they will never protrude from the frame. Instead, you will have an aluminium casement window installed in your Harrogate home, which will both look beautiful and keep your family safe.

Energy Efficient

As window installers, we are aware that products with a single pane of glass are not only antiquated but also inefficient. Because of this, all of our products feature double glazing as an option. Your overall U-values can be as low as 1.4W/m2K with double glazed aluminium casement windows, which is a value that is approved by government standards!

Investing in our upgraded aluminium casement windows is a great way to ensure that your Harrogatehome will remain dry and free from draughts. We are able to help ‘break’ the amount of heat loss and provide you with the very best insulation.

Sleek Sightlines

Aluminium casement windows are known for their high thermal efficiency and low maintenance requirements, and are among the best materials currently available. Every homeowner in Harrogate has the opportunity to achieve the ultra modern look of their dreams thanks to frames that are both smaller and more streamlined.

If you want to keep the classic look of your home, select one of our woodgrain finishes. You will be able to achieve both the thermal efficiency and the aesthetic allure that you have always desired in this manner. Simply installing aluminium casement windows in your Harrogate home is all it takes to give it a facelift and make it more appealing to potential buyers.

double glazing barnsley

Aluminium Casement Window Prices in Harrogate

Aluminium is considered a premium material within the industry as a result of its resistance to the elements, its efficiency in terms of thermal conductivity, and its incredible strength. We promote options that have lower sightlines and that are fully recyclable. We can provide you with a long lasting solution for your Harrogate home in the form of aluminium casement windows that are both cost effective and have the potential to last for many years to come.

What are you holding out for exactly? Learn more about our online quoting engine to get an estimate on the cost of new aluminium casement windows right away. 

Contact us through the online form or by phone if you need some assistance choosing the next solution for your home improvement project, and we will be happy to discuss the possibility of installing aluminium casement windows in your home today!

Check Out The Extra Options




We offer aluminium casement windows in 8 different powder coatings. There are also dual colour options with a high gloss white exterior.

White Grain Casement Window

White Grain

Golden Oak Casement Window

English Oak

English Oak Casement Window

Irish Oak

Irish Oak Casement Window

Golden Oak

Classic Cream Casement Window

Classic Cream

Chartwell Green Casement Window

Chartwell Green

Agate Grey Casement Window

Agate Grey

Grey Aluminium Colour Casement Window

Grey Aluminium

Black Ash Casement Window

Black Ash

Anthracite Grained Casement Window

Anthracite Grained

Anthracite Smooth Casement Window

Anthracite Smooth

Nut Tree Casement Window

Nut Tree

Rosewood Casement Window


Trade Door


D&I supplies to trade in South Yorkshire. If you are a tradesperson looking for aluminium casement windows, get in contact with our friendly team so that we can talk today.

Frequently Asked Questions

We hope that our frequently asked questions help you resolve any problems you might have. If you have more questions, contact our team today through form or phone. 

Where does D&I install?

D&I works in South Yorkshire, from our base all the way up to Leeds. You can get in contact with us to see if we install aluminium casement windows in your area.

What’s the difference between aluminium and uPVC?

What is a mitre joint?


Aluminium Casement Windows Brochure

Our brochures offer more technical specifications, like sash size, glazing, U-values and more. Take a look at the aluminium casement windows specifications.

Contact Us

Get in Touch

If you need help deciding or have any questions, our friendly team would be more than happy to help. Contact us by online form or phone, so we can talk to you about installing aluminium casement windows today.

Online Quote

Start Your Quote

Now that you’ve read through the benefits use our quoting engine to get an idea of the project ahead. Try our quoting engine for a comprehensive quote of your aluminium casement windows.


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