Certass Certification – The specialists in installer certification for the building fabric refurbishment industry

Certass Limited is a UKAS approved certification body for the operation of a Competent Person Scheme under a Department of Communities and Local Government (DCLG) license and a Green Deal Certification Body under licence from the Department for Energy and Climate Change (DECC).

Membership of the Certass Competent Person Scheme enables contractors to self-certify that their installations adhere to current Building Regulations as an alternative to submitting a building notice to the local authority or using an approved inspector.

Membership of the Certass Green Deal certification scheme enables contractors to self-certify installations to the requirements of PAS2030, which is the standard for work under Green Deal.

Membership of the Certass TrustMark Scheme demonstrates a company's dedication to consumer protection.

Certass Certification scope for Installers
Competent Person SchemeGreen Deal MeasuresTrustMark
  1. Replacement windows, doors, rooflights and roof windows to existing domestic property
  2. Replacement windows, doors, rooflights and roof windows to existing non-domestic property
  3. Installation of insulating material to the external walls of a building, not including insulation of demountable-clad buildings
  4. Installation of insulating material to the internal walls of a building.
*Scheme start date to be confirmed
  1. Energy efficient glazing
  2. External Wall Insulation
  3. Internal wall insulation
  4. Loft insulation
  5. Floor insulation
  6. Draught proofing
  1. Glaziers
  2. Conservatories
  3. Insulation (Cavity / Internal / External Wall)
  4. Loft Insulation Installers
  5. Builders
  6. Carpenter & Joiners
  7. Damp, Timber & Underground Waterproofers
  8. Leadwork Specialists
  9. Painters & Decorators
  10. Plasterers & Renderers
  11. Plumbers
  12. Roofers
  13. Floor Covering Installers
All Certass Limited UKAS accredited Certification Body activities are funded solely by certified members fees. Scheme charges are listed in scheme application packs.

Membership of the Certass certification scheme is not automatic. Member companies are assessed inline with the standards laid down in EN45011 and specific license requirements of DCLG and/or DECC. This means that Certass financially and technically assesses its members to ensure they meet required standards.

In addition to initially assessing every member each year, Certass will inspect a sample of work submitted by the member for scheme compliance.

Where appropriate, Certass notifies the local authority and issues a Building Regulation Compliance Certificate to the homeowner.

Certass also manages a product certification scheme called Thermal Rating Register, which ensures the thermal compliance of replacement windows and doors.

Certass and the Thermal Rating Register pride themselves on delivering a fair, friendly and cost effective service to both the industry and homeowners.

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Insulation Contractors

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Glazing Contractors

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CE Mark

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We want to know what our members think about us so that we can continually improve our services. Our members were asked to rate us as follows: Very satisfied, satisfied, neither satisfied nor unsatisfied, Dissatisfied, Very dissatisfied. Our latest member satisfaction survey results speak for themselves!