We are fully CERTASS approved for your assurance & total peace of mind.

OUR COVID-19 safety policy

All Certass Certification Scheme member contractors are regularly audited on-site and at the contractor premises.

The contractor’s paperwork is also checked to ensure that his business procedures meet the requirements of government-endorsed standards.

Certass members have direct access to a range of industry experts for immediate clarification and technical advice on building regulations via a technical helpline and online access to a technical manual, which is updated regularly.

1. Before work begins

Certass contractors will provide you with a consumer contract explaining the work to be undertaken.

2.After Completion

All Certass contractors are required to provide all of their customers with a written guarantee to cover the installation work.

Furthermore, Certass contractors are required to provide you with additional peace of mind in the form of an insurance-backed guarantee covering breaches of building regulations if they cease to trade.

3. Registration

Once the work has finished, your contractor will register your installation with Certass within 21 days of completion.

On your behalf, Certass will, where applicable for building regulation requirements, notify your local authority of the installation completed at your property address. Certass will issue you your legally required Building Regulation Compliance Certificate as proof of compliance*.

Certass Certification Scheme membership requires that a contractor must be able to provide customers with:

  • A  guarantee covering the completed installation
  • Financial protection with an Independent Backed Guarantee (IBG) to cover the Building Regulations requirements for 6 years should they cease trading
  • Suitably qualified and assessed site operatives

Certass carries out random audits on a percentage of a contractor’s work to ensure the work has been carried out in accordance with required standards.

The Clearglaze Family

Like the look of our service and products but not based in our catchment area? Take a look at our 2 sister companies in the surrounding area.


Established in Warminster, we cover the following areas: Frome, Westbury, Trowbridge, Melksham, Gillingham, Shaftesbury, and Devizes.