Building Regulation Part F

Means of Ventilation

New dwellings will now require post-completion testing of ventilation equipment for dwellings.

All domestic ventilation systems should be tested from a basic extract fan in the toilet to the supply and extract valves in a mechanical ventilation with heat recovery system.

Testing comprises of the following:

• Checking correct size and number of background ventilators.
• Ensuring internal doors have sufficient undercut to allow air transfer  between rooms i.e. 10mm over and above final floor finish.
• Ducted systems have been installed to reduce air resistance and leakage.
• Ensure there is sufficient access for routine maintenance.
• Confirmation that each fan unit meets the minimum flow rate standards in the Domestic Ventilation Compliance Guide.
• A report is require for each installed address for Building Control approval.
• Ensuring ventilation ductwork within unvented spaces is suitably insulated