What is Certass?

Certass is a UKAS accredited certification scheme for the installation of replacement windows, doors, and associated glazing products.

Certass installers are empowered to self-certify their work and ensure it complies with all the local Building Regulations. This means they can work on your home without the need for an inspection from local authorities, saving both time and money.

As a Certass competent persons scheme member, we are regularly audited, both on-site and at your premises.