Trade & DIY Counter

Keymer Double Glazing have been supplying local installers, builders and the general public with uPVC windows, doors and conservatories for many years now, and in recent years have also supplied PVCu Fascia, More »

uPVC Systems

Keymer are installers of the Duraflex system of PVCu Window and Door Profiles One of the most approved and tested systems available in the United Kingdom and Europe. Windows, doors and conservatories More »

Fascias, Soffits, Guttering & Roofline

At Keymer we use our own specialist installation teams, who will remove your existing fascia, soffits & cladding, then replace it with maintenance free uPVC, which is built to last! Our calcium More »

Secondary Glazing

Keymer Double Glazing are specialists in Secondary Glazing Keymer Double Glazing are Secondary Glazing specialists, established in 1990. Our sales team are always here to help you with any questions or queries More »

Timber Windows

Keymer Double Glazing also sell timber windows. Made from quality timber and double glazed, so you have the best of both worlds. Supply only or supply and fit. Stunning high quality windows More »


A conservatory can really improve the comfort of your home, come spring and summer you can enjoy the scent and tranquillity of your garden to the full. With Keymer’s wide choice of More »

uPVC Windows

Our wide choice of uPVC styles make it so easy to add beauty and character to your home! Whatever your taste you’ll find there’s a wide range of styles & designs to More »

GRP Composite Doors

Enhance the beauty of your home with an exterior door that combines traditional looks with all the benefits of modern materials. Made from glass reinforced polymer (GRP). Customade composite doors provide leading More »

Bi-fold Doors

Visofold sliding and folding aluminium doors can transform rooms into stylish, open plan living areas with stunning panoramic views. Designed for use as doors for single/double (open in or out), sliding and More »

uPVC Entrance Doors

Buy a new uPVC External entrance door from Keymer and you will find the choice absolutely stunning, not to mention the colour options, styles & finishes available to add extra individual character More »


shop[1]Keymer Double Glazing is the premier, established  installer of uPVC / PVCu Windows, Doors, Conservatories and PVCu roofline products for the West Sussex and surrounding areas.
You will find our web site provides details about Keymer as a company and also displays a wide range of styles and design to give you some useful ideas when considering home improvements. Compare our products against Anglian Windows, Everest and Zenith to see how competitive we are.

Unlike most companies in our industry, the images on this site are compiled mainly from our own installations and we would like to thank all our satisfied customers for their personal approval to use them.