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Certass registered company

What our customers say...

“Dear Sirs,


We have been very impressed with the service we received from The Green Window Company.


The initial visit from your salesman, the great advice of the surveyor, your fitters and office personnel – was reassuring to say the least!


I would have no hesitation in contacting you again.


Kind regards"


Choosing a Certass registered company offers many benefits;



What about the company?


  • Certass registered companies are continually re-assessed by an independent inspection body to ensure consistency of Building Regulations adherence and service

  • Certass proactively protects consumers from the cowboys – not only by withholding the scheme from those unable to pass Cretass’s independent assessments; but also by reporting to Local Authorities and Trading Standards companies who erroneously claim Certass registration, to enable prosecution


Certass registered companies have to meet certain criteria.


  • Consumer references must be provided

  • Trade references must be provided

  • Financial checks are made

  • Employer's Liability for at least £10M

  • Public Liability for at least £2M

  • Consumer Contract Documents with Terms & Conditions, to include a 7 day cooling off period. (MANDATORY)

  • Any guarantees and warranties must be clearly written

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