Quality windows and doors

At SJ Window Installations we offer a range of stylish windows and doors to suit your property type and individual taste.

Closing the door on draughts in Marlborough and Trowbridge

SJ Windows offer an unrivalled service and great products throughout the Marlborough and Trowbridge. We have set ourselves apart from the typical " double glazing installers" by doing things a little differently. We only install highly Energy Efficient, Eco-Friendly, Sustainable uPVC products for home improvements and ew build projects. We have the breadth of product range, style and colour to match any project. By specialising in Triple Glazing, all windows and doors supplied by us are ‘A ,B or C rated as a minimum energy performance rating. These also offer significant acoustic advantages and security as the centre pane has toughened glass as standard.


Whether it is a new front door, rear door or side door, we have the design, style and colour to suit your property. Our range of uPVC and composite doors are fitted with the Ultion Diamond Secure Lock ensuring you not only have a great looking entrance but one of the most secure. Evermore popular today the conservatory offers a room with many uses. Whether that's a space to relax, entertain or provide you the additional room that a young family needs to grow.


All work undertaken by us is done to stringent quality processes to guarantee a high quality installation that will last for years to come. In addition, we work to a number of trust marks including Maco Secure Plus, which offers you a number of unique benefits on the hardware provided with your installation, Planitherm approved installer, giving all the assurances and confidence of the glass installed and all delivered to and installed within the strict guidelines of the Fensa registration.


Enjoy the Benefits


We've been installing in the area for many years, ask for our testimonials.


A professional installation from fully trained and qualified installers.

No pressure

No pressue selling, we'll give you our best price and leave you to think.


10 year guarantee with all products supplied.