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

“Very happy with the installation and service provided by Great Harwood Windows. The work was completed on time by very friendly and professional staff. Any issues we had were quickly resolved and replied promptly when we called or emailed.”

Mr Diwan - Blackburn

May 31, 2024

“Fab! Brilliant job, great lads, looks amazing – thanks. Also appreciate how clean and tidy you’ve left everything!”

Mrs Dawson - Burnley

May 1, 2024

“Just wanted to say a big thank you to the team for all their hard work in ensuring that the product and installation was perfect. We are really happy with the windows and it was a pleasure working with you all. “

Mrs Taylor - Manchester

April 25, 2024

“I just wanted to feedback from today’s installation. From start to finish, we only have compliments. Every contact has been profressional and straight forward, all company employees I’ve met when they measured up, and when installed, have all been an asset to your company. The standard of the fitting of the windows is perfect, and the courtesy of each person has been exemplary. I don’t usually send reviews or emails like this, but I feel that I should on this occasion due to such an amazing positive experience. I’d highly recommend your company to others. Thank you very much.”

Mrs Lunn - Ambleside

April 9, 2024

“the lads came this morning and fitted my new composite door and replaced all my front window glasses a really nice and professional job done two really nice lads thank you very much”

Mr Matthews

March 19, 2024

“Absolutely brilliant service from start to end. GHW are very professional and the products they supply are excellent quality. Can’t recommend this company enough.”

Mrs Morley

March 1, 2024

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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.