Double Glazing Installers in Lancashire and across the North West

From our Blackburn base, Great Harwood Windows operate throughout the Lancashire area, Merseyside, Cheshire, Greater Manchester and West Yorkshire to lend our services to homeowners and installers alike. We’ve been serving towns, cities and villages in these counties for over 30 years, building an excellent reputation for reliable customer service, exceptional quality products and unrivalled installation expertise.


As we’re based in Lancashire, we spend the majority of our time serving the towns and villages in this region. The places we serve in Lancashire includes Preston, Accrington, Burnley, Blackpool, Chorley, Haslingden, Rufford, Ormskirk, Great Harwood and Blackburn.

VEKA full house casement window pvc great harwood
Deceuninck UPVC French Door

Greater Manchester

As the region of Greater Manchester is only a short distance away from Blackburn, we work throughout the region. The areas we serve here includes Rochdale, Bolton, Wigan, Leigh, Bury, Ashton-under-Lyne, Stockport, Warrington, Sale, Stretford & Salford.


Due to our proximity to West Yorkshire, our expert team has supplied numerous installers and homeowners across the region with a selection of our products. Taking us to historic towns like Keighley and Halifax, quaint villages such as Haworth, Greetland and Slaithwaite as well as the larger cities of Bradford and Huddersfield.

Front Door and Windows
Deceuninck uPVC Flush Sash Windows


Although Merseyside is a little bit further away for us, we still operate in towns such as Southport, St Helens, Crosby, Kirkby & Formby. We also serve plenty of villages in the area like Rainford, Haydock, Thornton & Lydiate.

Installations across the North West

At Great Harwood Windows, we have successfully completed a wide range of glazing installations across North West England. Click on the links below to find out more about our work across the area.

Aluminium glazing for Ribble Valley new build property

Aluminium bifold doors for Blackburn DIY SOS project

Commercial aluminium project in Rawtenstall

Patio with large patio doors
black aluminium bifold doors

Why Choose Great Harwood Windows?

We're committed to providing Lancashire homeowners with the highest quality service. Here are just a few ways we excel beyond the standards of other glazing installers.

Highly experienced teams with over 30 years trading

We value customer satisfaction above all else

Free no obligation quotes with no pressure selling

Fantastic trade support with free skip use

Highly trained dedicated installation teams

Experienced fitters with many years working in the industry

Efficient installation - usually 4-8 weeks from survey

All products are designed for maximum efficiency and energy saving

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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

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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.