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Why choose
G M Windows & Doors Ltd

Perfectionist | Attention To Detail | Communication

G M Windows & Doors team

Who we are

Home is where you build a future and create memories that last a lifetime. That’s why it is so important to make sure every aspect of your home will stand the test of time for you and your loved ones. At G M Windows & Doors, you can rely on expert installation by a team of professionals who truly care about the work they provide their valued customers. If you’re looking for quality window and door installation across Bolton and the greater Manchester area at a reasonable price, this is the team you can count on for exceptional service.

When you’re ready to get started on your next window or door installation project, set up a consultation to learn more. You can reach out through WhatsApp Business at 01204 866508 for fast, dependable service you will feel confident entrusting your home with.

George Martindale Director of Bolton based window company

Company history

George Martindale started this Bolton-based business in March of 2018. He not only brings a passion for delivering outstanding work, but also a wealth of knowledge to support it. George first started in the industry while working for his father’s window fitting company. It was there that he gained immense insights into the best techniques, quality of materials, and how he began to establish a solid network of contacts within the trade. His natural eye for detail accompanied with seeing first-hand how to run a successful business gave George the confidence to venture out on his own.

What started out as just George, a van, and word of mouth, is now a booming business with more than 100 5 Star reviews from the community they serve. The first apprentice hired on is now one of the top fitters in the region, and the fleet of service vehicles is continuously expanding. With more clients added to the list daily, G M Windows & Doors is growing quickly and consistently brings on more highly trained individuals. This is all thanks to the incredible team for putting their focus on reliable, quality craftsmanship and top-tier service.

George Martindale winner of Bolton ironman 2022

George Martindale: Transforming Windows and Doors, Redefining Excellence

Introducing George Martindale, the driving force behind G M Windows and Doors, a Bolton based company, where excellence meets craftsmanship.

Meet George...

From his schooling at Rivington and Blackrod high school, Bolton born George worked at Martindales Ltd as a window installer. With a strong work ethic and a proven background in installing, George took the plunge and started G M Windows and Doors in March 2018.

Now entering their 5th year in business, G M Windows and Doors are going from strength to strength. George has a relentless pursuit of excellence to the world of windows and doors. With a meticulous approach and a keen eye for detail, George has transformed G M Windows and Doors into a trusted name in the industry as well as being Bolton’s leading windows and doors fitter.

“George, you are an Ironman…WINNER”

Not only is George’s work meticulous, but his sporting pedigree is also off the scale. As well as running a full-time business, George also trained like a professional athlete with his greatest triumph winning Ironman UK in 2022.

Those not familiar with an Ironman competition, an individual will complete a 2.4-mile swim, 112-mile bike ride and then complete a 26.2-mile run (full marathon). This is all done within a 17-hour time frame with intermediate cut offs to also contend with.

George smashed the notoriously difficult course, running down the red carpet in his familiar colours of orange and black in an eyewatering 9hrs 38 mins and 30 seconds.  If you want to feel humbled, look at some of his past results.

Now concentrating on growing G M Windows and Doors, completing triathlons has been put on pause - a big relief to his competitors!

Windows and Doors Redefined...

Based in the heart of Bolton, G M Windows and Doors is more than just a business; it's a reflection of George Martindale's dedication to elevating the aesthetic and functional aspects of homes and businesses alike. With an unwavering commitment to quality, G M Windows and doors are addicted to perfection, seamlessly blending style, durability, and energy efficiency.

G M Windows and Doors - The Socials Edit…

If you would like to see how a brick out is done, or watch a composite door being installed or even want a bit of a giggle (yes we are talking about the falling over video) check them out on TikTok, Facebook or Instagram.

G M Windows and Doors - What’s Next…

2024 is looking to be a big year for G M Windows and Doors as they continue to grow, taking their windows and doors fitting beyond Greater Manchester, plus the offering of new services.


Customer care

Each step of this process you will experience just how much the G M Windows & Doors team puts into customer care. From the first consultation until installation day, you will receive thorough information delivered in a way that is easy to understand and catered to the unique needs of your home. Each project requires individual attention, which is exactly what G M Windows & Doors is respected for. George is personally known for quickly responding to clients with clear direction and trustworthy feedback and that commitment is shared by his employees. Your satisfaction is truly their highest priority, and this strong work ethic makes a noticeable difference.


Our services

You can find a wide range of services, from the installation of new doors and windows to the repair and replacement of existing ones. G M Windows & Doors have an extensive range of products to choose from, such as composite doors, window replacement, casement windows, and double glazing, so that you can find the perfect solution for your home.


Premium installations

Not only will your window and door installation be navigated by leaders of the industry who love what they do, but you will also notice the impeccable level of work they create. These are premium installations that look great and are done in a timely manner so that your life won’t be put on hold for long. You will also notice the transparent pricing is extremely competitive, especially for the professionalism you’ll experience when working alongside the G M Windows & Doors team. This is installation made easy, at a price you can feel good about.

When you’re ready to get started on your next window or door installation project, set up a consultation to learn more. You can reach out through WhatsApp Business at 01204 866508 for fast, dependable service you will feel confident entrusting your home with.

Get a quote

Locations we serve

Bolton Blackrod Westhoughton Farnworth Horwich Kearsley Little Lever South Turton


G M Windows & Doors Ltd is a reputable, local firm providing professional window and door installation services in Bolton and Manchester. With our well-established presence in Bolton, we take pride in delivering top-notch quality for all aspects of windows and doors. As specialists in domestic full-house window installations, composite doors and Bi-folding doors, we value customer feedback and recommendations to ensure the best service possible.

About Us

Our company is a leading provider of innovative solutions in the industry. With a dedicated team of experts and a solid commitment to excellence, we strive to deliver exceptional results to our clients. From our cutting-edge technology to outstanding customer service, we are proud to be your trusted partner in success.

Home Survey

With the help of a home survey, we can discuss and recommend the right products for your home.

It is perfectly fine to prefer an estimate via message instead of a home survey.

Qualified Surveyors, NOT PUSHY SALESMEN
Surveys are FREE of Charge

Premium Installation

Providing high-quality installation services in Bolton & Manchester

Our trained team makes the installation process seem easy! You can be sure your house will be left in the same condition we found it.

Attention To Detail

Customer Reviews

Our customers love, take a look and see what they had to say about our products and services.

Decided to go ahead with G&M because of the professionalism

I had received quotes from a few different company’s, G M Windows & Doors Ltd was reasonably priced and they were by far the most professional and took their time to discuss through all the options explaining everything in detail. I decided to go ahead with G&M because of the professionalism they showed and from their 5 star reviews.Throughout placing the order and installation, there was good communication and updates sent on a regular basis and any questions I had were responded to promptly. (I had a lot of questions but was never made to feel like I was mithering them)I had new front and back doors and all my windows replaced. One window needed a new lintel, and this was all arranged by the company ( I had the option to use my own builder). I decided to use their associated builders. He also was very professional taking videos and photos of everything he had completed.The team were professional and arrived on time each day with a courtesy text before arrival.They worked hard to ensure everything was completed to a high standard.


A fantastic company!

A fantastic company! So pleased with the new windows, back door and composite front door which I have had fitted.From the first appointment George was extremely knowledgeable and helpful. His attention to detail was second to non.I needed so much advice and he had an endless amount patience answering all of my questions. From recommending the best window design most appropriate for the age of my terrace house right down to the finer detail of choosing a font displaying the house number in the double glazed fanlight above the front door!He has a great team. Ashley and co were all professional, friendly and hard working. Their workmanship was to an extremely high standard.So pleased with all the new windows and doors fitted and highly recommend

Caroline Taylor-Smith

What Happens Next

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