CSJ is one of Scotland’s leading installers of bespoke home improvements. Started in 2003, CSJ has grown continuously over the years and serves customers throughout Scotland.

CSJ Logo

As a provider of home improvements we cover the whole of Scotland and work with a variety of materials including pvc, timber and aluminium.

As one of three companies in Scotland accredited with DGCOS certification (Double Glazing and Conservatory Ombudsmen), every installation we complete is covered by an underwritten ten year guarantee. 

We strive to give customers peace of mind when it comes to undertaking any work within your home. We only employ experienced craftsmen with at least five year’s experience.

Over 97% of our customers would recommend us, and our positive reviews affirm our warm yet professional approach to servicing all home improvement needs. 

Our expanding product range now includes sunrooms, kitchens and hybrid windows. 

Naturally, as well as an established commitment to customer service, our commitment to bringing forth the most advanced technologies follows. We utilise only the best in our installations Secured by Design certified products combined with Warm Edge technology to achieve a Grade A Energy Rating.


Ochilview Business Park
Ochilview Business Park