About Us

Composite Windows UK specialise in high-end composite, timber and aluminium windows and doors.

We have partnered with the DOVISTA Group to offer both Rationel and VELFAC brands. We also supply Solarlux folding and sliding doors, glazed extensions and Spitfire entrance doors.

Both the VELFAC and Rationel composite product ranges bring together the best of both worlds. They offer the durability and versatility of aluminium, together with the beauty and warmth of natural wood.

Rationel windows and doors are also available as fully timber product. All Rationel windows and doors have an iconic Scandinavian design that’s driven by detail. The result is something that truly stands out from the rest.

The VELFAC 200 system aluminium/wood windows and doors deliver contemporary styling. The slim 54 mm sightlines maximise natural light. Opening and fixed lights have the same sightlines, providing a consistent aesthetic across window units.

Rationel and VELFAC products are designed for the future. Using sustainably-sourced timber and exceptional craftsmanship, they’re built to last for decades and to be enjoyed for generations. Both the Rationel and VELFAC brands have a commitment to high performance and thermal efficiency. As a result, they promise a cosy and optimal indoor climate every time.

Solarlux is one of the leading manufacturers of premium glass system solutions. Composite Windows UK offer Solarlux bi-folding and sliding doors as well as thermally insulated and non-thermally insulated glazed extensions and canopies. Solarlux products are manufactured in Germany and have a commitment to high quality production. The company stands for excellent service and the desire always to be one step ahead.

Glazing Specialists

Composite Windows UK glazing specialists, forms part of the Westcott Group of Companies established in 2013. We have a vast experience of installing Rationel, VELFAC and Solarlux products throughout Hampshire, Surrey, Sussex, London, Oxfordshire and Berkshire.

We are proud to deliver excellent customer service. Our installers are highly trained, multi-skilled, clean and respectful. As a result, our reputation for offering a superior service has grown rapidly. We pride ourselves on building strong and lasting relationships with our clients.

Our location ensures that we can cover Bath, Bournemouth, Brighton, Chichester, Guildford, Lewes, London, Oxford, Petersfield, Portsmouth, Reading, Salisbury, Southampton, Winchester.

Featured in numerous house and home publications, we thrive on challenging projects, unique designs and difficult access. We are always happy to talk about your dream project. Please don’t hesitate to get in contact with us here.