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.

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Spitfire Doors

Spitfire Doors

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Origin Front Door

Origin Front Door

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Origin Black Aluminium Door Close Up

Origin Black Aluminium Door Close Up

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Door Fingerprint

Door Fingerprint

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Entrance Door

Entrance Door

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Natural effect Residential Door

Natural effect Residential Door

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A modern residential entrance featuring an aluminum door in a dark hue with a vertical glass panel and horizontal metallic details. The door is set within a facade combining wood and stone textures, leading out to a covered porch with a wooden ceiling. A manicured lawn bordered by a row of tall, narrow shrubs and a wooden fence can be seen in the background, under a clear daylight setting.

A modern residential entrance featuring an aluminum door in a dark hue with a vertical glass panel and horizontal metallic details. The door is set within a facade combining wood and stone textures, leading out to a covered porch with a wooden ceiling. A manicured lawn bordered by a row of tall, narrow shrubs and a wooden fence can be seen in the background, under a clear daylight setting.

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Open aluminium bifold door

Open aluminium bifold door

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Veka uPVC Bifold Door

Veka uPVC Bifold Door

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Cantilever bifold 3x2

Cantilever bifold 3x2

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Warmcore Bifold Door Black

Warmcore Bifold Door Black

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Bifold internal view 2

Bifold internal view 2

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Warmcore Bifold Door Closed

Warmcore Bifold Door Closed

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Warmcore Bifold Door Exterior Open

Warmcore Bifold Door Exterior Open

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Warmcore Bifold Door Exterior

Warmcore Bifold Door Exterior

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Black aluminium bifold doors

Black aluminium bifold doors

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french doors

french doors

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White uPVC Patio-Door-1

White uPVC Patio-Door-1

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Eurocell patio door grey

Eurocell patio door grey

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Deceuninck uPVC Patio Slider White Open

Deceuninck uPVC Patio Slider White Open

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Light Grey Patio Door

Light Grey Patio Door

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White patio door under Gable

White patio door under Gable

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Patio aluminium sliding door

Patio aluminium sliding door

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Deceuninck uPVC French Door

Deceuninck uPVC French Door

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Veka uPVC French Door Close Up

Veka uPVC French Door Close Up

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An Origin internal door.

An Origin internal door.

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Green Stable Door

Green Stable Door

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Oak effect Stable Door

Oak effect Stable Door

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Solidor Composite Stable Door Chartwell Green Open

Solidor Composite Stable Door Chartwell Green Open

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Solidor Composite Stable Door Chartwell Green

Solidor Composite Stable Door Chartwell Green

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A black front door.

A black front door.

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Ludlow Composite Door

Ludlow Composite Door

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A black front door.

A black front door.

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Red composite door

Red composite door

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A black front door.

A black front door.

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Blue Entrance Door

Blue Entrance Door

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A black front door.

A black front door.

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Solidor Composite Door Red Close Up

Solidor Composite Door Red Close Up

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Leamore Contemporary Composite Door Anthracite Grey

Leamore Contemporary Composite Door Anthracite Grey

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White Solidor Composite Door

White Solidor Composite Door

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Solidor Composite Door Golden Oak

Solidor Composite Door Golden Oak

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Green Composite Door

Green Composite Door

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Solidor Composite Irish Oak Door

Solidor Composite Irish Oak Door

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A black front door.

A black front door.

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Chartwell green composite front door

Chartwell green composite front door

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Composite Door Chartwell Green

Composite Door Chartwell Green

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Solidor Composite Stable Door Open White

Solidor Composite Stable Door Open White

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Solidor Composite Stable Door Oak Open

Solidor Composite Stable Door Oak Open

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Solidor Composite Door Anthracite Grey

Solidor Composite Door Anthracite Grey

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Solidor Composite Stable Door Chartwell Green Open

Solidor Composite Stable Door Chartwell Green Open

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white casement windows

white casement windows

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grey casement windows

grey casement windows

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White Georgian Casement windows

White Georgian Casement windows

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Veka uPVC Casement White

Veka uPVC Casement White

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VEKA full house casement window pvc great harwood

VEKA full house casement window pvc great harwood

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White casement windows

White casement windows

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White casement windows with bars

White casement windows with bars

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White aluminium casement windows

White aluminium casement windows

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Cream Casement Window

Cream Casement Window

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Veka uPVC Rosewood Casement and Bay Windows

Veka uPVC Rosewood Casement and Bay Windows

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Veka uPVC White Casement and Bow windows

Veka uPVC White Casement and Bow windows

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Veka uPVC White Casement Installation

Veka uPVC White Casement Installation

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Eurocell uPVC Vertical Slider Cream

Eurocell uPVC Vertical Slider Cream

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White Vertical Sliding Bay Window

White Vertical Sliding Bay Window

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Spectus Vertical Slider Kitchen

Spectus Vertical Slider Kitchen

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Spectus Vertical Slider Bedroom

Spectus Vertical Slider Bedroom

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Veka uPVC Vertical Sliders

Veka uPVC Vertical Sliders

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A traditional stone building featuring vertical sliding sash windows with green frames and a subtle green front door, showcasing a blend of historic architecture with modern window design. The windows are complemented by red brick lintels, adding character to the facade, set against a clear blue sky.

A traditional stone building featuring vertical sliding sash windows with green frames and a subtle green front door, showcasing a blend of historic architecture with modern window design. The windows are complemented by red brick lintels, adding character to the facade, set against a clear blue sky.

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Full house installation with flush sash windows

Full house installation with flush sash windows

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Deceuninck uPVC Flush Sash

Deceuninck uPVC Flush Sash

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White Flush Sash Window Installation

White Flush Sash Window Installation

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Oak effect flush sash window

Oak effect flush sash window

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Interior White Flush Sash Windows

Interior White Flush Sash Windows

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uPVC Bow Windows

uPVC Bow Windows

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Veka uPVC Rosewood Casement and Bay Windows

Veka uPVC Rosewood Casement and Bay Windows

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Rosewood UPVC casement bay window

Rosewood UPVC casement bay window

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Golden oak bay window

Golden oak bay window

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Residence 9 Flush sash casement and bow window

Residence 9 Flush sash casement and bow window

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Veka uPVC White Casement and Bow windows

Veka uPVC White Casement and Bow windows

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Veka uPVC Small White Bow window

Veka uPVC Small White Bow window

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Chartwell green residence collection window close up

Chartwell green residence collection window close up

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Residence 9 Flush sash casement and bow window

Residence 9 Flush sash casement and bow window

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Oak effect residence collection window on brick wall

Oak effect residence collection window on brick wall

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Residence Internal Shot

Residence Internal Shot

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Residence Installation Fit

Residence Installation Fit

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Heritage Aluminium Windows

Heritage Aluminium Windows

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White casement windows with bars

White casement windows with bars

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Veka uPVC Rosewood Bay Window

Veka uPVC Rosewood Bay Window

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Chartwell green residence collection window close up

Chartwell green residence collection window close up

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Vertical Sliding Sash Window

Vertical Sliding Sash Window

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Evolve VS Chartwell Green sprayed external front of house

Evolve VS Chartwell Green sprayed external front of house

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Ultraframe Conservatory Roof light

Ultraframe Conservatory Roof light

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Ultraframe conservatory roof

Ultraframe conservatory roof

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Ultraframe glass roof conservatory

Ultraframe glass roof conservatory

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Tiled roof conservatory with glazed panels

Tiled roof conservatory with glazed panels

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Roof Lantern Glass

Roof Lantern Glass

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Black Roof Conservatory

Black Roof Conservatory

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Black lantern roof

Black lantern roof

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Bedroom roof lantern

Bedroom roof lantern

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AluFold Direct Roof Lantern interior view

AluFold Direct Roof Lantern interior view

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Glazed lantern roof

Glazed lantern roof

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Ultrasky Lantern Roof Extensions

Ultrasky Lantern Roof Extensions

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Ultraframe Bedroom Roof Lantern

Ultraframe Bedroom Roof Lantern

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Interior lantern roof

Interior lantern roof

Efficient and Secure Casement Windows in Lancashire

High-Quality Profile 22 Casement Windows for Your Home

Profile 22 casement windows provide a perfect balance of energy efficiency, security, and customisation, making them a popular choice for Lancashire homes. These windows achieve impressive thermal performance, with double glazing reaching 1.2 W/m²K and a Window Energy Rating (WER) of A+, while triple glazing options go as low as 0.8 W/m²K with a WER of A++. The frame and sash feature up to eight thermal chambers with RCM Thermal Inserts, ensuring optimal insulation and structural stability.

Designed for durability and comfort, Profile 22 casement windows include optional centre seals on the frame and sash to improve insulation and weather protection. The secure bead system meets security standards without glazing clips, prepared for future PAS24 enhancements. For added durability, localised wall thickening enhances screw and hardware retention.

With the widest range of glazing options available, these windows allow for energy-efficient, tailored solutions. An extensive selection of cills, bay poles, accessories, and packers ensures every project can be completed to exact specifications, delivering both cost-efficiency and design flexibility.

Cross-section of Profile 22 Casement Window with double-glazing and multi-chamber frame for thermal efficiency.
Transdmen

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

“A prompt and efficient service. The fitter had a good attention to detail noticing a flaw in the glass and arranged a refit. A fabulous service.”

Mr Smith - Accrington

December 6, 2024

“We are extremely happy with the new roof, the immediate difference both visually and warmth wise is outstanding.

The comments from family and friends has been nothing but very positive.

Please convey our sincere thanks to all the different teams/individuals that have worked on our project from start to finish, the standard of work has been of the highest quality. Everyone has also been extremely polite, and respectful of working in someone elses home. At the end of each day or on completion of their work, our home has always been left in a clean and tidy state.

We would definitely recommend GHW Windows.”

Mr Hodds - Clitheroe

November 29, 2024

“Work done was very satisfactory, They were helpful , respectful and have good aftersales service.”

Mr & Mrs Talbot-Smith - Blackburn

October 31, 2024

“GHW Windows fitted new front . Advice given when deciding on choice of door. Communication good and door fitted efficiently without any problems. Very pleased with door and GHW “

Mr Clarke - Great Harwood

August 30, 2024

” Did not sell me anything I didn’t need. Clear information regarding installation and timescales. Fitters exceptional attention to detail.”

Mrs Kirwan - Great Harwood

August 30, 2024

“Great Harwood windows have been very professional and patient with us when you could have taken a different approach.

 

I will recommend your company and team and as and when we require more windows I will be in contact directly not thru a 3 rd party as we have other products from you that have been perfect. “

Mr & Mrs Prior

July 15, 2024

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.