High Performance Windows in Both Aluminium and UPVC

Great Harwood Window’s range of aluminium and UPVC windows can be promptly supplied to suit a wide variety of property applications, whether for a client’s project or your own. Actively working with market leading fabricators such as Veka and Residence 9, in any required style our suite of windows excel in delivering excellent efficiency, security, and style.

Cream Casement Windows


The UK’s most popular choice of window style, casement windows have remained a simple yet effective aperture solution in many homes for centuries. Modern variants combine flexible performance with bold design, to add value to any type of property.

Casement Windows

Eurocell uPVC Vertical Slider Cream

Vertical Sliders

Immediately capable of ventilating a room, our range of vertical sliders make use of a sash that slides effortlessly upwards to help all feel closer to the outside. Regardless of shape or size, vertical sliders add heritage charm while remaining highly efficient.

Vertical Sliders

Deceuninck UPVC Flush Sash Window Close Up

Flush Sash

Making the most of clean and sleek profile sightlines within a sash that sits completely flush in the frame, flush sash windows evoke a classic style but excel at providing modern efficiency, security, and heat retention.

Flush Sash Windows

Tilt and turn windows interior

Tilt & Turn

Providing users with the ability to enjoy great flexibility, tilt & turn windows do exactly what they say on the tin, turning outwards in the conventional manner, as well as tilting inwards for better safety. Ideal for those living in high-rise builds, tilt & turn windows are very innovative.

Tilt & Turn Windows

Veka UPVC Georgian Bay Window

Bay & Bow

The optimal choice for those hoping to let the light shine in from multiple angles as well as subtly extend the home, bay & bow windows provide the same benefits as casements with added elegance and charm.

Bay & Bow Windows

Residence 9 Green

Residence 9

Successfully recreating the traditional aesthetics of 19th century timber but without any of the high maintenance drawbacks, Residence 9 windows make use of 9 internal chambers for enhance efficiency alongside an entirely flush sash for the perfect finishing touch.

Residence Collection

What's the difference?

Double vs Triple Glazed Windows

A double glazed window has two panes of glass separated by a vacuum containing either air or an odourless gas. This heat-trapping chamber slows the rate of thermal transfusion, preventing heat from infiltrating in Summer and escaping in Winter. Triple glazed windows, with their extra pane of glass and extra chamber, greatly enhance this effect.

As well as fantastic levels of thermal performance, both double and triple glazing can also achieve higher standards of noise insulation and UV ray resistance.

triple glazing
White aluminium casement windows
Which should I choose?

Aluminium or UPVC windows?

UPVC is Lancashire's most popular window material. It's beloved for its versatility and compatibility with a range of colours and woodgrain effects.

Aluminium, meanwhile, exhibits exceptional strength. Aluminium windows, therefore, can support very large panes of glass with only the thinnest of frames. It's this that gives aluminium windows their sleek, minimalist and modern appearance.

Both materials also only require minimal maintenance, with only the occasional wipe down with soapy water required.

Full house installation with flush sash windows

A huge thank you to Scott and Damien for doing an amazing job installing my windows. They were prompt, attention to detail and cleaned up after themselves. Nothing was too much trouble. I have no hesitation in highly recommending the team at GHW – thank you. 😃

February 6, 2024

“We had an old set of wooden garage/workshop doors replaced with a set of aluminium framed bi-folding doors. Communication throughout was great and it was quick and easy to get a quote and then set a date for the work to be carried out. The installers were extremely friendly and professional, and we couldn’t be happier with the work they carried out.”

Mr Pilling

February 2, 2024

“It has been a brilliant experience and we will definitely be return customers when we are replacing all the remaining windows in our house refurbishment.”

Mr Pilling

January 10, 2024

“All of the installation team were great. A special mention goes to Chris who was there throughout and who’s skills, professionalism and courtesy was second to none.”

Mr Green

January 10, 2024

“Fantastic service including after sales from start to finish. Definitely recommend GHW to anyone plus , will use them again when we replace some windows”

Mr Inge - Oswaldtwistle

November 21, 2023

“Great service and great customer service from the fitters and good quality product.All round excellent experience”

Mrs Buck

November 21, 2023

Get in Touch

Based in the heart of Lancashire

Situated in the very heart of Blackburn, we are readily capable of providing the people of East Lancashire and surrounding areas with a range of UPVC, composite and aluminium products. Whether for personal or trade purposes, realising your aspirations are only one step away with Great Harwood Windows team.