Triple and Double Glazed Windows, Winchester

Test Valley Windows is a double glazing company, installing windows, doors, conservatories & orangeries in Winchester, Hampshire since 1995.

When asking us for a quotation, for your new project, you can feel confident that you will be well looked after, as you will be dealing with a which? trusted trader.

“Your Satisfaction is our future”

Our motto is “your satisfaction is our future” which is backed up by being awarded the Plastic Window Federation Certificate of Excellence for the last 19 years!

Customer satisfaction is why we have such a high number of customer recommendations. “The majority of our business comes from personal recommendation and we strive to achieve customer satisfaction at all times. Our customers come back to us again and again and we pride ourselves on being an approachable company with a genuine desire to fulfil customers needs” says sales Director Nigel Gough.

curtain walling winchester college

The above photo is a curtain walling project and one of many we have undertaken for Colleges in Winchester.

Quality Affordability and Peace of Mind

With Test Valley Windows proactive investigation into new products and our buying power, through many years of trading, we are able to offer the highest quality products at an affordable and very competitive cost.

And what does this cost? Initially nothing, using our free design service our professional representatives will compile a quotation based on your requirements and current building regulations absolutely free. Test Valley Windows have a NO PRESSURE SALES POLICY. We will offer a friendly service and will never outstay our welcome.

We offer a 10 Year installation and product, guarantee that is insurance backed through the Plastic Window Federation. So confident, about our product, we also back this up with a 10 Year security guarantee. Visit our guarantee section for more information.

Our skilled installers work to a very high standard, which is evident when you view our customer recommendations. This ensures that our clients are very happy with the end product.

FENSA Registered Company

Fensa was set up in response to new building regulations in England and Wales. Homeowners are required to comply with current thermal performance and building regulations relating to new and replacement windows, doors and roof lights. The work must be certificated by a Company registered to a Competent Persons Scheme such as FENSA or Local Building Control.

A few Recent Windows, Doors, Conservatories and Extensions in and around Winchester, Hampshire

Before & After Photos of recent installations in Winchester

The photos below show before and after pictures of a recent installation of double glazing in Winchester, in grey RAL 7016. The windows are foiled uPVC to look like painted timber windows. The front door is grey PVCu composite door with a lock that automatically locks when the door is shut. The key is only used to open the door. I hope you agree that the new windows and door have completely transformed this property.

Porch Installation in Winchester

The photos below show a porch recently completed in Winchester. Brick and render, to match the house, along with A rated energy efficient white pvc double glazing. The roof is Pilkington Active glass so natural light is not lost from the hall.

Take a look at our new and replacement Porch designs which are all made to measure, creating a beautiful entrance into your home.

Livin Room Conservatory Completed in Badgers Farm, Winchester

Below is a recently completed Livin Room conservatory completed in Badgers Farm, Winchester, Hampshire. It was added as a garden breakfast, dining and reading room. Our customers are extremely happy with the result. This type of extension is designed not to get to cold or hot and is part extension part conservatory with its partially solid roof. With our new Sun Shade Blue glass roof 80% solar rejection can be achieved and can cost less to heat than a typical solid roof extension of the same size.


At Test Valley Windows we love to hear the positive feedback we get from our customers, and we are extremely proud of the quality of our products, services and installations. Please take a look at a selection of the testimonials we have received from our customers.

  • I am so pleased I chose Test Valley Windows to install my new conservatory, the quality of the finished installation is excellent. I will be recommending you to any friends and family who are looking for a top quality installation by a quality local company.
    Mr Farrer
    Picket Piece
  • Very pleased with excellent service and the result. Our new conservatory built on the foundations of our previous is a superb addition to our house.
    Mr & Mrs Smith
  • We spend hours in our fantastic new conservatory; we wouldn't hesitate to recommend Test Valley Windows.
    Mr & Mrs Lawrence
  • We are so pleased with our new conservatory; we always sit in it when entertaining our many friends and family. We would highly recommend Test Valley Windows
    Mrs Gibbons
  • We couldn't be happier with our new conservatory; we use it more than any other room in our home. Everyone comments on how nice it looks, and we always say how happy we are with the service Test Valley Windows provided.
    Mrs & Mrs Kemish
  • Having visited Test Valley Windows' showroom and see their range of products, I chose a combination of black and white uPVC windows to compliment my period property. I am delighted with the finished installation, everyone was very professional and took pride in the job they were doing. I wouldn't hesitate to recommend Test Valley Windows to my friends and family.
    Mr Blackmore
  • We are very pleased with our new porch from Test Valley Windows, the building work has been admired by our neighbours, and the fitter was extremely good in his manner and took pride in his work
    Mr & Mrs Morgan
  • With such a professional approach and a first class finish, I wouldn't hesitate to recommend Test Valley Windows.
    Mr Lurcas
  • I would like to thank Test Valley Windows for such a wonderful conservatory; it has added a wonderful extra room to our home. From the start, everyone was courteous and helpful, and nothing seemed too much trouble. I would only be too happy to recommend Test Valley Windows to anybody interested in a conservatory or replacement windows and doors.
    Mr & Mrs Dawkins
  • We love our conservatory. It's the best room in the house! Like most people, we deliberated for quite some time about whether to invest in a conservatory. It was one of the best decisions we ever made. It has transformed our home. Test Valley Windows did a thoroughly professional job from start to finish, and we would have no hesitation in recommending their services.
    Mr & Mrs O'Brien
  • Thank you very much for my beautiful conservatory. I was very impressed with the quality of workmanship and coordination of all the tradesmen involved. I wouldn't hesitate to recommend Test Valley Windows.
    Mrs Brown
  • We’d like to say a big thank you to the Test Valley Windows team. They helped us realise our vision of extending out our kitchen to create a large, light space that the whole family can enjoy. The team worked hard, were friendly, polite and did everything they said they would.
    Mr & Mrs Dearman
    Eastleigh, Hampshire - 27th November 2017
  • We are delighted with our new conservatory, supplied by Test Valley Windows. First-class service right from our initial enquiry, with no high-pressure selling, right up to completion. Would highly recommend to all our friends and neighbours.
    Mr & Mrs Maddox
    Ludgershall - 26th May 2016
  • We have just had a new conservatory installed by Test Valley Windows (TVW) and are delighted with it. The installation went very much according to schedule with a minimum of fuss and inconvenience to our cats and us.Nothing was too much trouble, and any issues were quickly dealt with. We would heartily recommend TVW for any works involving windows, conservatories etc.
    Mr & Mrs Bainbridge
    Whitchurch - 6th July 2016
  • Just a short note to say how pleased we are with our new style conservatory. The overall look is wonderful and better than we had imagined. This was a large project from the outset but was managed professionally, efficiently and with good verbal and written communication by Malcolm at all stages. The build quality was of a very high standard which was noticeable even at an early stage and whenever an issue occurred which was bound to happen when some different parties were involved on a job of this size; these were always resolved quickly with a positive attitude. The finished product has been seen by friends and family who were all taken aback on initial viewing, which is the reaction we sought from the outset. We would recommend Test Valley Windows to anyone who is looking for a quality product and builds at an affordable price. Thank you once again.
    Mr & Mrs Lee & Debbie Pearson
    11th February 2016
  • Test Valley Windows gave us exactly what we wanted, were extremely helpful and professional and came highly recommended. Our new conservatory is beautiful and is the best room in our house. We wish we'd done it years ago!
    Mr & Mrs Donohoe
    Abbotts Ann - August 2009
  • I'm delighted with my conservatory, the service provided by all at Test Valley Windows was superb.
    Mr Robinson
  • I am writing to thank you for an excellent service and work you gave us in planning and constructing our new conservatory. The time that Malcolm spent in discussing our requirements and adjusting the design to ensure it would achieve all we wanted was particularly useful. The work your personnel produced is of a very high standard, and we were impressed by the efficiency and speed.
    Mr Evans OBE

The Beautiful City of Winchester

Test Valley Windows is proud to provide our services to the beautiful City of Winchester.

Home to 45,000 people, Winchester is popular for its mix of food, festivals and lively modern atmosphere offering a real feel-good factor. It has the largest farmers’ market in the UK and has been praised as the best place to live in Britain with its fantastic Ofsted school ratings and low crime rates.

Winchesters authentic history makes it popular amongst tourists, along with its medieval buildings and one of Europe’s largest cathedrals who’s grounds are extremely popular on a sunny day.

The city dates from 150 BC and was chosen by King Alfred the Great as England’s capital, it has also been suggested that it could have been the real site of King Arthur’s legendary Camelot.

Test Valley Windows has installed windows, doors, conservatories & orangeries in Winchester, Hampshire since 1995.

If you are thinking of buying triple or double glazing windows in Winchester and surrounding areas, contact us today on 01962 670535 for a free design and quotation. Alternatively visit our showroom to find out why so many of our customers wouldn’t hesitate to recommend us.