Hi,
I have two bathrooms upstairs with two inline extractors in the loft. Ducting from each fan to eternal wall (2 and 3 metres) with a 'Y' junction just before to one duct into one outlet.
BC have told me each fan needs it's own outlet to prevent extracted air being channeled back toward the other fan.
I have read Approved Doc. 'F' but cannot find anything to assist disputing or confirming this.
Has anyone any idea where to find this?
I have two bathrooms upstairs with two inline extractors in the loft. Ducting from each fan to eternal wall (2 and 3 metres) with a 'Y' junction just before to one duct into one outlet.
BC have told me each fan needs it's own outlet to prevent extracted air being channeled back toward the other fan.
I have read Approved Doc. 'F' but cannot find anything to assist disputing or confirming this.
Has anyone any idea where to find this?