Our Trade Services

Despite our extensive experience helping residential homeowners fulfil their property ambitions, we’ve managed to lend our services to reliable tradesmen and installers too. With over 30 years’ experience working collaboratively with traders, we’ve provided tremendous products and expert advice, helping them to complete projects on time and on budget. Our trade services offer a variety of durable and efficient products including a trade supply, trade supply windows and secure and robust doors for trade customers.

As trade supply windows and doors experts, we know how important it is for installers to use a product supplier that is reliable and dependable, helping them to get the best end result for installations. Wherever you’re based in the North West, we can offer you a trade supply service second to none. Our trade supply window and door services are fully accredited, with a Certass insurance backed guarantee, keeping your peace of mind that we are a trusted and responsible installer.

High-end trade supply windows and doors designed to meet the strictest project demands

In terms of trade supply products, we supply everything you will need for a hassle-free and smooth installation, all at a very competitive price for trade customers in Lancashire and the North West. From highly durable, sleek aluminium trade supply windows, to trade bifold doors that allow for an abundance of natural light, to contemporary, ultra-efficient composite doors, we supply trade products in any quantity on time, every time. So if you're looking for trade double glazing in Blackburn, Lancashire or the surrounding area, you can trust Great Harwood Window's trade supply service.

We offer an impartial consultancy service, and do not gravitate to any particular product or system – this results in a lot of flexibility to fit client requirements dependent upon budget and specification.

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.