11.1.7 Structural design checking and certification
MMC systems shall be adequately designed, checked and certified. The design of the MMC superstructure forming home(s) shall be adequately checked by an NHBC registered certifier.
Homes made from MMC systems to form the superstructure require certification confirming that the design of each house or apartment block has been satisfactorily checked by an NHBC registered MMC certifier.
MMC certifiers should:
- be listed on NHBC’s list of MMC certifiers
- be a suitably qualified civil or structural engineer with a minimum of three years’ experience in the use a particular MMC system or in the main components of the MMC system
- not be the designer of the MMC system or from the same firm as the designer of the MMC system
- complete and sign a certificate confirming assessment of structural adequacy for each specific project
- provide the registered builder with the completed and signed certificate to cover the different house(s) or apartment block(s).
The registered builder should ensure that the completed MMC certificate is available on site for inspection and a copy sent to the NHBC project manager.
Contact NHBC Standards, Innovation and Research via operationssupport@nhbc.co.uk
- if you require contact details of MMC certifiers, or
- to apply to become a MMC certifier.
Last updated: 2nd January 2025