Get to know CSJ

Scotland's leading installer of bespoke home improvements

Get to know CSJ

Six reasons to choose CSJ

Our History…


The business was formed as a Limited Company in Scotland.


Construction begins on our purpose-built showroom and depot in Falkirk.


We moved into our new headquarters and showcased our products to the public for the first time.


We were invited to join and become underwritten by the DGCOS.


We completed our 10,000th window installation and 100th sunroom!


We opened our purpose-built design centre

Our approach

We pride ourselves on our professional, yet warm and friendly, approach to providing home improvement services. We are one of three companies in Scotland registered with the official double glazing and conservatory ombudsmen service DGCOS whom underwrite all our work for a ten year period. Furthermore, we are one of the highest rated home improvement companies in Scotland.

With so many firms offering low cost products, it can be difficult picking the right company to supply and install your home improvement(s). Here are a couple more reasons you should consider CSJ…

  • Our upvc home improvements are Grade A energy rated
  • We offer a variety of styles and only use virgin upvc (no sun discolouration)
  • All frames are Police Accredited Secured by Design through our supplier Consort
  • Our products are certified and recommended by the Energy Saving Trust
  • We offer a Triseal Spacer Bar (reduces up to 2dB noise and 70% condensation)
  • We don’t take deposits or up front payments*
  • We offer a variety of payment methods including competitive financing
  • We provide a ten year insurance backed guarantee
  • We have over 12,000 happy customers
  • We cover the whole of Scotland!
  • We are committed to the environment
  • We regularly donate to local charities and non-for-profit organisations

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