Ceiling spaces must be ventilated when non-permanent joints are installed. Ceiling spacesĬeiling spaces can be difficult to ventilate and permanent joints should be used as much as possible. Service cupboards must also be well ventilated when non-permanent joints are being used. is sealed to stop the migration of leaking gas into the building structure, and.Service cupboardsĪ service cupboard, which is typically installed on each floor level, is an area that: Pipe riser shafts may contain equipment that must be accessible for servicing and inspection. suitably sized floor penetrations that the pipe passes through (see the section on ‘Calculating the free ventilation area’ for information about how large these vents and penetrations must be) vented to a safe location outside the building. ![]() ![]()
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