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Trusted Traders

KJM Windows and Conservatories

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24 Reviews

Opening Hours
Today - 08:30–17:30
  • Monday 08:30–17:30
  • Tuesday 08:30–17:30
  • Wednesday 08:30–17:30
  • Thursday 08:30–17:30
  • Friday 08:30–17:00
  • Saturday 10:00–16:00
  • Sunday - Closed


KJM Windows & Conservatories an multiple award winning company were formed in 1983. Over the years KJM has become a well established and a reputable glazing company, which has gained the trust of thousands of home owners and businesses alike! To date we have installed over £60,000,000 of glazing products. Our diverse range of materials gives you the options that you require. We don't just sell PVCu, but offer timber and aluminium as well. This is backed up with a comprehensive 10 year warranty (insurance backed) that has a proven record. We have many accreditations, including G11, G13, G14 & G15 Installer of the year finalists, Glass & Glazing Federation (GGF) members, Hampshire Trading Standards approved and of course Which? Trusted Traders. Sales calls are free, without pressure and our pricing is competitive. There is no hype or special "buy one get one free" offers, just good honest pricing. Give us a try, you wont be disappointed.

What we do

  • Glaziers

    • Double glazing installation
    • Timber windows
    • Sash windows
    • Window consultants
    • Aluminium Windows
    • Double glazed units
    • Double glazing repair
    • Replacement window services and repairs
    • Stained glass
    • Triple Glazing
    • UPVC Windows
  • Conservatories

    • Hardwood conservatories and orangeries
    • Sun Lounge
  • Doors

    • Patio doors
    • Timber doors
    • Bi-fold doors
    • ​Aluminium doors
    • Composite doors
    • Front door
    • French doors
    • UPVC doors
    • Door repairs
    • Orangeries

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.

24 reviews
Customer Service
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Great job
Customer Service
Work done to a very high quality. Cleaned after, perfect. Door was a better than thought as heavy but so light on hinges. made so much difference to front of house... bit of class... Windows in house are 25 years plus from KJM so new door had to come from them. So pleased... if they see this thank you...
Customer in Hampshire Posted on 26/11/2020 , work completed 12/09/2020
Excellent double glazing firm
Customer Service
The work was carried out very professionally. The team worked extremely hard in adverse weather conditions. Very pleased with the final product. Have used this firm before and have found their work to be top quality and competitively priced. Also any guarantee work, where necessary, has been carried out promptly and without quibble. Will have no hesitation using them again.
Customer in Hampshire Posted on 22/09/2020 , work completed 19/08/2020
KJM windows are excellent
Customer Service
KJM have fitted all the new doors and windows for our 4 bedroom house and we are absolutely delighted with them. The price was good and work excellent. The porch, doors and bay window were tricky jobs and are now airtight and immaculate. All the windows are beautifully finished off and look lovely. The workers were polite and hardworking, and took care and pride in their work. I couldn't be more pleased and wholeheartedly recommend them.
Customer in Hampshire Posted on 05/09/2020 , work completed 02/09/2020
Door replacement
Customer Service
The door fitting was very efficient, tidy and really good standard. The fitter was very friendly and prompt, ensuring everything was in place and working before leaving. Initial quote process was thorough so no need for any follow up visit. Could have done with an earlier update between quote completion and fitting date.
Customer in West Berkshire Posted on 22/10/2019 , work completed 22/08/2019
The trader replied (on 11/12/2019)
Thank you for taking the time to review KJM. I am more than happy that your overall experience was a positive one. I will ensure that we try and improve the communication with regards fitting dates. Thank you again and Seasons Greetings. Mark and the KJM team
KGM gave excellent service from the initial meeting to discuss our requirements through to efficent installation and prompt problem solving
Customer Service
Our requirement was to replace 4 double-glazed units in two 35-year-old large windows (one with 6 panes & the other with 3). We had 3 quotations and the KGM Sales Manager who visited our home was head and shoulders above the others in his technical knowledge. He recommended that we replace all the glass to avoid a visual difference between the new and old, and that we replace the aluminium frames because of the much better thermal properties of modern frames. It was agreed that we would retain the mahogany frames into which the aluminium frames were mounted. When it came to the installation and the first aluminium frame was removed an unforeseen problem came to light - the sides, top and bottom of the old frames were "stepped" whereas the new ones were flat and would not fit. The installers phoned the office and the MD and Sales Mgr were on site within 40 minutes. They were extremely apologetic and soon decided that either in-situ modification to the wooden frames was required or new frames. The carefully removed frame and glass were reinstalled. Within two days we were told that new mahogany frames, stained to match all the others in the house, would be supplied in 3-4 weeks. The installation was then completed in two days. Aidan and Carl worked efficiently, neatly cleanly and tidily. No touching up was needed inside and very little outside. I have no hesitation in recommending KGM for all aspects of their work but especially for their problem solving skills.
Customer in Hampshire Posted on 23/09/2019 , work completed 17/09/2019
Great service
Customer Service
Arrived on time, very friendly and very, very tidy. Excellent finish to job i.e. edging to wall tiles & floor tiles.
Moya, Hampshire Posted on 08/08/2019 , work completed 08/08/2019
Prompt and professional - 100%
Customer Service
Work done was to replace a new patio door. Everything was carried out in total perfection, from office to workforce we were totally impressed and our new doors are simply great.
Peter, Hampshire Posted on 02/08/2019 , work completed 02/08/2019
Extremely Satisfied
Customer Service
Our requirements were discussed beforehand, the fitters were polite and courteous, the work is to a high standard and extremely satisfactory
Customer in Hampshire Posted on 01/08/2019 , work completed 23/07/2019
Replacement windows and door
Customer Service
We had 2 guys installing windows and a door this week. We live on a main road out of Southampton, and it can get very noisy. The windows are great quality and reduced the noise to a quiet hum. The 2 guys were a pleasure to have in the house. Polite, cheerful, tidy and prompt.
Customer in Southampton Posted on 04/06/2019 , work completed 04/06/2019
Efficient and friendly service
Customer Service
Fantastic service from start to finish. The quality of the workmanship is second to none. They replaced all our windows, our front door, and replaced two windows with French doors as well as bricking up our old back door. Friendly workmen whose attention to detail is incredible. Will be recommending to friends and family.
Customer in Hampshire Posted on 23/04/2019 , work completed 03/04/2019