Endorsed by Which?

Alex Dobson Windows & Doors Ltd

5.0

100 Reviews

Opening Hours
Today -
  • Monday 08:00–18:00
  • Tuesday 08:00–18:00
  • Wednesday 08:00–18:00
  • Thursday 08:00–18:00
  • Friday 08:00–18:00
  • Saturday 08:00–18:00
  • Sunday - Closed

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

Organisations and Awards

May 2020

About

Based in Knaphill, Surrey, we are a local, friendly company with over 25 years’ experience in windows and doors, from double glazing to composite and bi-folding doors.

As a local company, we take great pride in the work we carry out through the area. Attention to detail and high standards are paramount to our work, and result in customer satisfaction in everything we do. Much of our work comes from recommendation and repeat business, which speaks to our high standards.

Our tradesmen are fully trained and qualified in both traditional methods and the latest techniques, so you can rely on the quality of our work.

For more information, or to discuss your requirements, contact us today.

What we do

  • Glaziers

    • Replacement window services and repairs
    • Double glazing installation
    • Sash windows
    • Aluminium Windows
    • Double glazed units
    • Double glazing repair
    • Triple Glazing
    • UPVC Windows
  • Double glazing

    • Double glazing installation
    • Double glazing repairs
    • Double glazing suppliers
  • Doors

    • Bi-fold doors
    • Patio doors
    • Composite doors
    • Front door
    • UPVC doors
  • More Services

    • upvc sliding sash windows

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

5.0
100 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
New front door.
Customer Service
Quality
Value
We received very good service from Alex, from start to finish. There were plenty of doors to choose from! He quoted a price and kept us informed of the time frame. The door was fitted and the site left clean and tidy afterwards. Happy to recommend.
Customer in Surrey Posted on 10/12/2025 , work completed 24/11/2025
REPLACED FRONT DOOR
Customer Service
Quality
Value
This is the second time we've engaged Alex. The first time was to replace blown double glazing, this time to replace our front door, both times the work was carried out to a very high standard and my wife and I are very pleased with the results of the professional work carried out by Alex and his men
Customer in Surrey Posted on 01/09/2025 , work completed 01/09/2025
Replacement of all windows and doors
Customer Service
Quality
Value
All 18 windows and 5 doors (including front and French doors) in my house needed replacement. Alex impressed me immediately with his knowledge and attitude when he came to quote for the work. He offered to move any furniture and alarm sensors out of the way while work was taking place and replace them after finishing. Alex answered all my queries and, shortly after his visit, I received a detailed and very competitive quotation for the work. The installation work commenced within the delivery date promised, and Alex and his two-man team were always "on site" at or before the agreed time of 8 a.m. All three of them carried out their work to the highest standard and were very courteous and pleasant towards me. As promised, they moved my furniture and alarm sensors carefully and always thoroughly cleaned up the room they had been working in. They finished the work well within the time scale quoted, and I had no problems whatsoever with their work or the communication between us. I am extremely happy with the finished job and would have no hesitation in recommending them wholeheartedly to anyone considering this type of work.
Customer in Surrey Posted on 17/08/2025 , work completed 15/08/2025
Installation of a new front door
Customer Service
Quality
Value
The work was carried out very efficiently, and I am pleased with the result. The work was done to a good standard, and everything was left neat and tidy. Highly recommended.
Customer in Surrey Posted on 16/07/2025 , work completed 11/07/2025
Highly recommend
Customer Service
Quality
Value
I have not used the company before but all previous reviews were very good . We had 2 windows replaced and a front window converted to a bay window. Alex , jay & Gary carried out the work on time , quickly , professionally and to an excellent standard. I have already passed on their details to some of my neighbors who commented on how good the job looked.
Customer in Surrey Posted on 09/07/2025 , work completed 09/07/2025
Excellent work Great team
Customer Service
Quality
Value
Alex Dobson and his team, replacement of three windows, and a foggy fan light window. all worked very well. Nice clean finish. Great work, and team. We are really happy with the lovely windows. We would use them again. Thank you Alex
Customer in West Sussex Posted on 12/06/2025 , work completed 10/06/2025
Highly Competent & Professional
Customer Service
Quality
Value
Alex Dobson fitted a new front door and surround to our home in Virginia Park. He is knowledgeable, reliable, with a friendly and competent team. Everything worked as expected and we are very happy with the finished installation. We would definitely use him again.
Customer in Surrey Posted on 09/06/2025 , work completed 21/05/2025
Successful transformation!
Customer Service
Quality
Value
This is the second time I've engaged Alex for window replacement. It was an easy decision based on the previous positive experience. This time round Alex and his colleague swapped an old bow window for a plant-on bay window making a huge difference to our property. Alex was helpful and patient during the design decision-making process and once a date was set for the work, it didn't change. Their work was top notch - from the thorough application of dust sheets and floor protection, care with the old window removal to minimise disruption and the ensuing making-good, to the final touches and clean up at the end. We will be using him again for future jobs that we have planned. Highly recommended!
Customer in Surrey Posted on 24/05/2025 , work completed 23/05/2025
All done professionally professionally and as per agreed schedule
Customer Service
Quality
Value
The team deserve a five star review on all counts. Built credibility right from the contact stage to quotation and enquiries, and then finally to installation. Cost was very competitive . Quality of work was excellent.
Customer in Surrey Posted on 30/04/2025 , work completed 15/04/2025
Excellent
Customer Service
Quality
Value
Alex & his team supplied & fitted 2 Cortizo sliding doors. They removed French doors and a further large window. The work was skilfully completed in a day. Dobson Windows & Doors are professional, reliable polite & tidy. We have used them before & recommended them on many occasions. I would use the again without hesitation.
Customer in Surrey Posted on 05/04/2025 , work completed 31/03/2025
Recommended
Customer Service
Quality
Value
Had previously approached other people to undertake a number of jobs to secure windows and doors. The fIrst was only interested in selling security devices and the second created more problems than he solved. Called in Alex on my daughter’s recommendation. Alex recommended some sensible and cost effective solutions to a number of problems including installing a new door. The work was completed on schedule by Alex and his team and they cleared up thoroughly on completion.
Customer in Berkshire Posted on 25/03/2025 , work completed 07/03/2025
5* Service from start to finish!
Customer Service
Quality
Value
Alex was extremely professional, kind and courteous throughout the whole process. From the initial survey, he took time and care to explain everything in detail and was patient in explaining how windows and door differ. We had 16 windows, a utility room door and front door with Alex. He allowed us to send pictures of windows and doors we liked and he then matched them for us. His team always arrived before the given time and were methodical with their approach to what needed to be completed. They honestly highlighted any snags and were quick to fix any problems that were not their fault. Alex was always available via call or text throughout the process. Highly recommended and we were extremely happy to use a local tradesman.
Customer in Surrey Posted on 06/03/2025 , work completed 06/03/2025
Excellent work
Customer Service
Quality
Value
Excellent service provided by Alan and his team. We needed quick turnaround for a new slide door. Alan was speedy, professional and highly efficient throughout. Cost was accurate and value for money given the high standard of workman ship and professionalism given to the job. Highly recommend and I will definitely use again!
(your username) Posted on 10/02/2025 , work completed 31/01/2025
First time user
Customer Service
Quality
Value
This is our first time using Alex Dobson Windows. Alex was recommended by a colleague. The quotation for the replacement window frame and extras came very quickly. The lead time to installation was much quicker than we expected. On installation day the team were at our front door exactly at the time agreed. Very friendly and obliging; the job was done quickly, all the debris removed everything cleared away and the debris removed. We will definitely ask Alex again for any future jobs
Customer in Surrey Posted on 04/02/2025 , work completed 04/02/2025
Great quality secondary glazing fitting
Customer Service
Quality
Value
We are very pleased with our noise cancelling secondary glazing. The team arrived on time, took care to keep everything clean and tidy and carried out the work to a high standard. Thank you.
Customer in Surrey Posted on 01/12/2024 , work completed 21/11/2024
Great work, great price, great team
Customer Service
Quality
Value
Two new UPVC windows installed to replace old wooden windows along with UPVC soffits above these windows at BTL. Tenants were over the moon with Alex and the team who also reinstalled the plantation shutters saving the handyman returning, leaving everything spotless. Have used Alex before so was not in doubt. Triple AAA+++. Highly recommend.
Customer in Surrey Posted on 17/10/2024 , work completed 15/10/2024
Thoroughly Recommend
Customer Service
Quality
Value
Alex has done 4 jobs for me and on my recommendation 3 for a friend of mine. We have both been very happy with his service, from competitive quote through to prompt and tidy installation. We have had no complaints when he and his crew have worked in our house as they are very courteous and tidy.
Customer in Surrey Posted on 05/09/2024 , work completed 03/09/2024
Brilliant Window Replacement
Customer Service
Quality
Value
This is the second time I have used Alex and his team because I had such a good experience the first time when they replaced my large kitchen window and back door. They have now replaced every window in my house and I am absolutely delighted with the results. Alex and his team were always prompt, worked diligently and went above and beyond the norm to ensure that the end result was everything I could have wished. I don't use the word craftsmen lightly, but I can do so in this case because of their meticulous work. I have absolutely no hesitation in recommending Alex and his team if you are looking for the best.
Customer in Surrey Posted on 31/07/2024 , work completed 31/07/2024
Replacement window
Customer Service
Quality
Value
Alex Dobson communicated clearly the process and timescales in relation to replacing a window in our bathroom. The work was completed efficiently, with care and the guys cleared up after themselves. We were very happy with the window they put in and found the whole process stress-free.
Customer in Surrey Posted on 27/07/2024 , work completed 26/07/2024
High standard of work
Customer Service
Quality
Value
This is the second time I've used Alex. He fitted a new front door last year. This time he fitted 3 new windows. The team arrived on time and carried out the work to the usual high standard. The quote he provided was very competitive. The team cleaned up thoroughly before they left. As we continue with our house project we will not hesitate to use Alex again.
Customer in Surrey Posted on 10/06/2024 , work completed 10/06/2024
Fantastic work from a great, friendly and professional team.
Customer Service
Quality
Value
Alex provided and installed a complete house replacement of all our windows and doors. The work was outstanding. Communication from the start was always prompt and very helpful. Having had several quotes for this work I can categorically say he was very competitive in his pricing and we were very pleased with the professionalism of his and his teams work throughout the process. Alex gave a time scale for the work to be done and was carried out to schedule. The property was always left clean and tidy at the end of their work day. We would be very happy to use Alex and his team again and have no hesitation in recommending him. The whole process was very easy. They were a pleasure to have around, hard working, friendly and considerate of our home. We did have a very minor problem with a patio door that was resolved within 2 days of communicating with him. Excellent. A really great team.
Customer in Surrey Posted on 31/05/2024 , work completed 29/04/2024
Replacement of kitchen window and back door
Customer Service
Quality
Value
Alex and his team arrived right on time and worked diligently and carefully to remove a difficult Crittall window and a worn out back door. It took me some time to choose the company to do this work and I am very glad I did so and chose Alex Dobson. When he came to do the quote it was obvious that he was very experienced and knowledgeable and the confidence he expressed regarding replacement of the window was very refreshing and reassuring. I am absolutely delighted with the results and plan on using him again in the near future to do further work. I would give Alex Dobson my highest recommendation.
Customer in Surrey Posted on 01/05/2024 , work completed 30/04/2024
Usual High Standard
Customer Service
Quality
Value
Alex and his team fitted a door and window to our new porch. I have used Alex before and this job was completed quickly and to a high standard, similar to other work he has done for me in the past. His team are very business-like, but friendly and approachable. I have some more window replacement work coming up and I will certainly be using Alex.
Customer in Surrey Posted on 18/04/2024 , work completed 18/04/2024
Supplied and installed new backdoor.
Customer Service
Quality
Value
Alex and his team supplied and installed a new back door. They were very efficient and the quality of workmanship was excellent. I would highly recommend them.
Customer in Berkshire Posted on 04/04/2024 , work completed 04/04/2024
Great job
Customer Service
Quality
Value
I have used Alex several times and as before punctual, friendly, polite and did a great job with no dramas and all left tidy and neat.
Customer in Surrey Posted on 14/02/2024 , work completed 13/02/2024