What is Certass?

Certass is a competent person scheme that regulates the double glazing industry. The department for communities and the local government set this scheme up in 2006. It's main function is to ensure that double glazing installers follow Building Regulations. It also protects the homeowners interests and installation quality. A company that is registered with Certass will have first proved its quality, as the body insists that all its members follow strict installation standards. Approved tradespeople will need to show knowledge of any compliance with building regulations to ensure all installations are compliant.

Trustmark is the government endorsed quality scheme that covers work a consumer has had carried out in or around their home. When a consumer chooses a Trustmark registered business they are engaging with an organisation that has been thoroughly VETTED to meet required standards and has made a commitment to good customer service.