Andy did a great job installing our new windows and door, very happy with the quality and fitting service. Would use GM windows & doors again in a heartbeat. Bryony also has been very responsive ov... See more
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George Martindale started G M Windows & Doors Ltd the Bolton-based double-glazing windows and door replacement business in March 2018. He brings a passion for delivering outstanding work and a wealth of knowledge to support it. George started in the industry while working for his father’s window fitting company Martindale’s, in Bolton. There, he gained immense insights into the best techniques and quality of materials and how he began establishing a solid network of contacts within the trade. His natural eye for detail and seeing first-hand how to run a successful business gave George the confidence to venture independently. What started as just George, a van, and word of mouth, is now a business with over 100 5 Star reviews. The first apprentice is now one of the top fitters in the region, and the fleet of vehicles is continuously expanding. You can find various services, from installing new doors and windows to repairing and replacing existing ones. G M Windows & Doors have an extensive range of products, such as the best composite doors, window replacement, casement windows, and double glazing, to find the perfect solution for your home.
Unit 1 Weston Street, BL3 2SB, Bolton, United Kingdom
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Just used G M Windows and doors to replace an old UPVC back door. Excellent company to deal with very good communication from initial contact to works being completed, Works have been finished to a very high standard. I would highly recommend this company to family and friends without a doubt.

Reply from G M Windows & Doors Ltd
From first enquiry to the final fit they were great with communication. The end result (new composite door) is fantastic, all tidy and old door taken away.

Reply from G M Windows & Doors Ltd
Professional service from start to finish.
Very happy with the results. Friendly helpful people, big thanks to Bryony, Paul and Kane.

Reply from G M Windows & Doors Ltd
Really impressed with the workmanship, quick friendly and clean. Most of all really impressed with the results. I love my new front door!

Reply from G M Windows & Doors Ltd
Excellent service once again from G M Windows. The prices are reasonable and the excellent workmanship means I wouldn't use anyone else. Can highly recommend George and all his team.

Reply from G M Windows & Doors Ltd
We have installed many doors supplied by George and the team absolutely top quality products.
The company is very easy to work with responding to any queries we have straight away help and advise on there products was easy to get from them 👌

Reply from G M Windows & Doors Ltd
New cannon back door fitted. GM windows were so easy to deal with from the first phone call to finishing the job. They were highly professional and organised. So much choice in the brochure and it's great how you can see real pictures of the doors through the WhatsApp feature brochure. The finish is perfect, everything was left really clean all rubbish taken away. Would 100% use again and recommend to others.

Reply from G M Windows & Doors Ltd
Highly recommend… we love our new doors. Part of the project wasn’t as straight forward due to the size of the barn door/windows… but everything was completed with great precision….
Not to mention how tidy the property was left. We will definitely use GM Windows & Doors again. Katie

Reply from G M Windows & Doors Ltd
Great service throughout from quotation to installation.

Reply from G M Windows & Doors Ltd
I am very happy with the new front door and its installation. The job was done within the promised timescale by a friendly and professional duo.
I recommend GM Doors.

Reply from G M Windows & Doors Ltd
Lads were very polite and hardworking, completed a tricky job well and cleaned up after themselves

Reply from G M Windows & Doors Ltd
Exceptional service from George and his team. My windows, french doors and front door look amazing. The workmanship was excellent, very professional, courteous and attention to detail was outstanding. I would have no hesitation in recommending GM windows, very competitive and reasonable prices. Bryony was a pleasure to liaise with.
Rekha Patel

Reply from G M Windows & Doors Ltd
Amazing! 🤩 From asking for a quote to fitting and finalising the team at GM have been fantastic. Every query has been answered with eagerness by Bryony and Freya and George himself even called round to discuss parts for our job. The fitters, Steve and Johnnie, completed the job with such ease and energy. And as for the windows and doors, they speak for themselves - gorgeous!! Highly recommend!

Reply from G M Windows & Doors Ltd
Great service from GM Mike & Paul were great and did a very good job very pleased with the windows

Reply from G M Windows & Doors Ltd
We have used G M Windows & Doors Ltd a couple of times now and the service is excellent. Everyone involved has great customer service, George, Bryony and all the lads who have worked at our house. They do a fantastic job and leave everything clean and tidy when they leave

Reply from G M Windows & Doors Ltd
I have just had my upper and lower bay windows replaced by GM Windows and Doors. The job was complex as all the wood work around the bays and the flat roof needed replacing and insulating. I’m so happy with the work that the lads have done. Paul and Ste , the fitters have done a lovely job, taking great care with the internals so that redecoration isn’t needed. Michael Hill who did the flat roof and woodwork did such a good job that neighbours noticed and took his card. All around, care and attention was taken and I am very happy.

Reply from G M Windows & Doors Ltd
The workers did an excellent job. They were very professional, left everything clean and tidy afterwards. They changed my very old windows, in an old house and did not leave any cracks or damage to the walls.
I got brand new, high standard windows in an affordable price!

Reply from G M Windows & Doors Ltd
If I could give more then 5 stars I would!
Exceptional and amazing service from the get go. Communication between Bryony to having the windows fitted by Jack, Paul & Taz.
All of them very polite, friendly and did an amazing job fitting the windows and door.
I got a text message for all 3 days to let me know when they were heading my way and they were here ready to go for 8:30am. Not one day were they ever late.
I would highly recommend G M Windows & Doors!

Reply from G M Windows & Doors Ltd
Seamless experience for getting our new front door fitted. Bryony was fantastic in communicating and liaising before ordering, and was so patient whilst I was so indecisive. She offered great expert advice and knew her stuff.
The lads who came to fit the door, Matt and Jack I believe, were so professional, polite and tidy.
George was also great to deal with who came out to measure the doorway again after I worried about what our finished floor height would be, I felt reassured before placing the order rather than a nuisance, and sure enough it’s perfect.
The door is of fantastic quality, much better than I imagined and I’m so happy with the finished result. The next time I need new windows or doors I’ll be ringing these guys first.

Reply from G M Windows & Doors Ltd
Great company to deal with. A large range of products. Staff friendly and helpful. Great standard of workmanship. Tidy and efficient. Many thanks for my beautiful new porch

Reply from G M Windows & Doors Ltd
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