uPVC Windows

Double Glazed Windows

If you are looking for replacement double glazed windows locally, look no further than Best Windows and Doors Ltd. We offer window installation services for custom windows, Upvc, Aluminium, Flush sash upvc and or vertical sash windows. Whatever your needs or renovation dreams, we can facilitate your home improvement project with award-winning double glazing.

We install UPVC casement windows and doors across Blandford, Poole, Bournemouth, Canford Cliffs, Sandbanks, Westbourne, Wimborne, Shaftesbury, Gillingham, Sherborne, Dorchester, and surrounding areas.

At Best Windows we supply and install stylish quality UPVC double glazing that will give your home character and shape the atmosphere of the interior. Our new generation of double and triple glazed windows remain functional and retain a Great look without the need for expensive maintenance. The new materials and technologies used to manufacture our windows allow for excellent sound and heat insulation, sustainable performance, easy maintenance, and comfort that lasts.

aluminium double glazing dorchester

Aluminium Double Glazing

Our aluminium windows are built with a thermally broken aluminium frame and polyamide bridge, achieving the best energy performance on the market. This design results in a higher standard of heat retention and guarantees the best standard of energy management throughout.

The energy efficiency of our aluminium windows will also notably increase the standard of central heating. This improved performance means heating will be needed less frequently, therefore reducing heating costs and carbon footprint, simultaneously saving the planet and your wallet!

Smarts Aluminium windows

At Best windows, our strong, durable, and attractive aluminium windows will not only bring value to your home but will increase appearances with their smooth and sleek profiles. Due to their inherent strength, aluminium windows come with elegant, slim frames which allow for more glazing, offering better views and letting in more natural light.

Colour Options

At Best windows, our smart aluminium windows are available in a wide choice of colours and finishes. Our KL colour range offers short lead times whilst our RAL colour options offer a world of choice. We also offer bespoke colour options which include the Sensation range from Smart which features beautiful textured finishes.


Smarts aluminium double glazing Dorchester
energy efficient double glazing dorchester

Energy Efficiency Tripled Glazed Units

Our energy efficient Planitherm double and triple glazed units are manufactured using the latest technology in glass and spacer units, which allows heat generated from inside your home to be reflected back into the room, but also trap heat through solar gain, thus maximising the thermal performance of the windows. The economic and energy-saving properties contribute not only to lower heating costs, but also to reduce air pollution and help to preserve the ozone layer.

The combination of the glazing, spacers, seals and frame design results in a window which reduces noise pollution levels, offers excellent protection from draughts and helps improve thermal efficiency.


Traditional UPVC Sliding Sash Windows

Best Windows and Doors, in conjunction with our partners at Victoria Sliders, offer virtually maintenance free UPVC sliding sash windows.

These reduce noise intrusion and add insulation value performance.

With sculptured frame, bead, Georgian bars and run through horns, you can achieve the appearance of traditional box sash windows.

How Do Our Sliding Sash Windows Work?

Our sliding sashes offer have a very simple way of operation: two sashes within an outer frame that work independently of each other, on a balance mechanism designed to hold them at any height. This is an ingenious design feature, which allows the sashes to tilt from the inside, to facilitate safe, easy cleaning.

Structural strength is enhanced through the use of steel through the internal chambers of the profile, and to further increase stability and strength.

ECOSlide sliding sash bathroom window.

Planning Advice

Additionally, our team can advise on planning, and subtlety for use in conservation and listed building settings.


French doors Wimborne

We install a wide range of stylish French Doors, and Bi-Fold Doors, made from only the best, high-quality manufacturers’ products.  

Composite door Ferndown

Our composite front doors give your home a great look, as well as extra security. Please contact us for more information.

Conservatories Wimborne

Conservatories add comfort, style and elegance to your home living space. For roof lantern enquiries or quotes for the best conservatory prices, contact us today.

Victorian Sliders logo

Victorian Sliders are Europe’s largest specialist manufacturer of PVC-U vertical sliding sash windows.

Victorian Sliders vertical sliding sash windows
ECOSlide sliding sash bathroom window.
Ecoslide logo

ECOSlide PVC-U sash windows: a cost-effective solution for replacing like for like replacement, or as an alternative to other styles.

ECOSlide window.
ECOSlide window.
Sternfenster Window Systems

Established in 1974, Sternfenster is one of the UK's largest trade fabricators of uPVC and Aluminium Windows and Doors.

Sternfenster Window Systems
Sternfenster Window Systems