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Accreditation: Delivering confidence in construction materials, projects and practices

Accredited testing, calibration, inspection and certification provide consumers, suppliers, purchasers and specifiers with assurance that construction projects run efficiently, construction sites are safe and reliable materials are used. They also provide Government and Regulators with reliable evidence that completed projects meet regulatory compliance.

Samples, products, services, or management systems can be evaluated against specified requirements by laboratories, certification bodies, and inspection bodies (collectively known as conformity assessment bodies). Accreditation is the independent evaluation of these conformity assessment bodies against recognised standards to carry out specific activities to ensure their integrity, impartiality and competence.

Accredited Laboratory Testing to ISO/IEC 17025

UKAS accredits construction testing laboratories to ISO/IEC 17025; General requirements for the competence of testing and calibration laboratories against a wide range of scopes. These include the testing and calibration of both raw construction materials and construction products for durability, safety, characteristics, and specification.

Accredited pre-completion testing is also provided for air leakage and noise acoustic and sound-proofing testing.

UKAS also accredits calibration laboratories to ISO/IEC 17025 to provide accurate measurements in the engineering sector. Accreditation covers areas such as temperature and humidity, pressure, vacuum and flow, magnetics, density, dimensional, force, hardness, mass and volume.

Accredited Certification Schemes

UKAS accredits certification bodies to provide certification to ISO 9001 Quality Management Systems (QMS), and ISO 14001 Environmental Management Systems certification (EMS) for construction related activities.

UKAS also accredits organisations to certify construction products and materials, as well as the National Highways Sector Schemes.

Accredited Inspection Programmes

Inspection bodies are accredited to ISO/IEC 17020: Requirements for the operation of various types of bodies performing inspection for construction-related activities such as welding and welding procedures, pressure vessels, piping, and gas, electrical safety, lifting equipment and the carriage of dangerous goods.   

UKAS also accredits organisations providing inspection services in areas such as asbestos surveying and legionella risk assessments. 

Accredited Notified Bodies

UKAS provides accreditation for organisations seeking appointment by a UK competent authority under EC Directives or UK Regulations. UKAS accredits organisations to notify against UK Building Regulations and the European Construction Directives.


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