Award Winning Double Glazing Products & Services

Windows double glazing - Test Valley Windows


Double glazing and triple glazing. uPVC and aluminium windows available in a wide range of styles and finishes that will transform the look of your home. Available with Georgian bars, lead designs, etc. More info »

Home Doors


We supply a huge range of uPVC, GRP composite, stable, French, patio, bi-fold and sliding stacking front and back door designs and colours, ensuring there is the right choice for the entrance to your home or garden. More info »

Home Conservateries


Our free bespoke design service will help you choose the perfect conservatory to suit your desire, home and budget. Styles include Georgian, Edwardian, Victorian, Lean-to and combination designs. More info »

conservatory test valley windows

Liv-in Rooms

The Liv-in Room Orangery is the best of both worlds, combining the light and sky of a conservatory with the walls and ceiling of an extension. More info »

Home Orangery compressed


Our traditional Orangeries are very grand and sophisticated extensions with the interior height adding to this spectacular living space. More info »

Bi fold doors

Bi-Folding Doors

Bi-folding and stacking door systems by Test Valley Windows are of the highest quality and are ideal for open plan living or bringing the. More info »



Glazing solutions for offices, schools, showrooms and shop fronts in curtain walling, commercial shop front system and frameless glazing etc. More info »

Porch Design Test Valley Windows


Porches create an entrance into your home that helps to protect your it from the elements and wear and tear. They can be somewhere to store your… More info »

Home Show Conservatories


Our spacious conservatory, window and door showroom in Andover, Hampshire is the perfect place to browse our many quality product options. More info »

Why Choose Us?

We’ve been installing quality bespoke windows, doors and conservatories from our Andover base since 1995.

Test Valley Windows is a double glazing company with a service second to none.

All of our double and triple glazed windows, door, conservatory, orangery, guttering, roofline and commercial installation services are available across Hampshire, Wiltshire, Dorset, Berkshire and Surrey.

What Our Customers Say

  • 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’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
  • 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 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
  • 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
  • With such a professional approach and a first class finish, I wouldn't hesitate to recommend Test Valley Windows.
    Mr Lurcas
  • 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
  • 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 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
  • 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 spend hours in our fantastic new conservatory; we wouldn't hesitate to recommend Test Valley Windows.
    Mr & Mrs Lawrence
  • 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
  • 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
  • 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
  • I'm delighted with my conservatory, the service provided by all at Test Valley Windows was superb.
    Mr Robinson
  • 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
  • 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
  • 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