We are installing ceiling extractor fans in the showers and bathrooms.
I assume the ducting will go through the roof void and outside?
Do we need soffit vents or how is the ducting vented into the outside?
Thanks
Browse Forums Bathrooms and Laundry 1 Aug 02, 2011 7:09 pm We are installing ceiling extractor fans in the showers and bathrooms. I assume the ducting will go through the roof void and outside? Do we need soffit vents or how is the ducting vented into the outside? Thanks Re: where to duct the extractor fans 2Aug 02, 2011 10:26 pm Hi, It seems that our ceiling heat and fans in bathrooms and showers are not ducted to the outside. They just extract humid air to the void below roof. It sounds like your models are designed to be ducted to the outside though. You might want to check that with the builder or installer? “It is good to have an end to journey toward; but it is the journey that matters, in the end” http://www.buildinganewhome.com.au Re: where to duct the extractor fans 3Aug 02, 2011 10:39 pm Jervisbay It seems that our ceiling heat and fans in bathrooms and showers are not ducted to the outside. They just extract humid air to the void below roof. Many builders will only duct into the ceiling space for wet area ceiling fans as well as kitchen rangehoods - you can ask your builder to upgrade them to be ducted to the outside air (it's usually a few hundred dollars extra per exhaust fan/rangehood). Re: where to duct the extractor fans 4Aug 02, 2011 10:51 pm CA3105 you can ask your builder to upgrade them to be ducted to the outside air (it's usually a few hundred dollars extra per exhaust fan/rangehood). In our case we paid extra to have the rangehood ducted to the outside. Didn't want to have food grease and smoke ending up in the ceiling space. “It is good to have an end to journey toward; but it is the journey that matters, in the end” http://www.buildinganewhome.com.au Re: where to duct the extractor fans 5Aug 03, 2011 9:07 am CA3105 Jervisbay It seems that our ceiling heat and fans in bathrooms and showers are not ducted to the outside. They just extract humid air to the void below roof. Many builders will only duct into the ceiling space for wet area ceiling fans as well as kitchen rangehoods - you can ask your builder to upgrade them to be ducted to the outside air (it's usually a few hundred dollars extra per exhaust fan/rangehood). It is illegal (in Vic at least) to have a rangehood ducted to the ceiling cavity. It MUST be dusted to atmosphere or recirculated though the house. If recirc is chosen you MUST fit charcoal filters to the rangehood. If you have built after this was past your builder has broken the law and should be made to fix it at their cost Re: where to duct the extractor fans 6Aug 03, 2011 9:44 am we are owner building and havent got to the fans yet.. so no laws broken (yet) and we are in Qld. As far as the kitchen fan is concerned - havent really thought about ducting that - will probably do re circ with the charcoal, as I dont use the cooker hob very much at all, and only with a pressure cooker.. just looking at the bathroom fans at the moment... I think I would prefer to duct to the outside, dont fancy all the steam etc in the roof cavity Re: where to duct the extractor fans 7Aug 03, 2011 6:50 pm chrisandkate CA3105 Jervisbay It seems that our ceiling heat and fans in bathrooms and showers are not ducted to the outside. They just extract humid air to the void below roof. Many builders will only duct into the ceiling space for wet area ceiling fans as well as kitchen rangehoods - you can ask your builder to upgrade them to be ducted to the outside air (it's usually a few hundred dollars extra per exhaust fan/rangehood). It is illegal (in Vic at least) to have a rangehood ducted to the ceiling cavity. It MUST be dusted to atmosphere or recirculated though the house. If recirc is chosen you MUST fit charcoal filters to the rangehood. If you have built after this was past your builder has broken the law and should be made to fix it at their cost Interesting, I just posted this question (ie, is it legal to duct kitchen exhaust into roof cavity?) in the General Discussion section. After a few posts- and reading these initial ones, I was thinking it must have been ok because it seems a few have theirs done that way and/or had to pay to have to ducted externally. Thanks everyone - you have inadvertently answered my question also. HHCIB Re: where to duct the extractor fans 8Aug 03, 2011 7:23 pm chrisandkate CA3105 Jervisbay It seems that our ceiling heat and fans in bathrooms and showers are not ducted to the outside. They just extract humid air to the void below roof. Many builders will only duct into the ceiling space for wet area ceiling fans as well as kitchen rangehoods - you can ask your builder to upgrade them to be ducted to the outside air (it's usually a few hundred dollars extra per exhaust fan/rangehood). It is illegal (in Vic at least) to have a rangehood ducted to the ceiling cavity. It MUST be dusted to atmosphere or recirculated though the house. If recirc is chosen you MUST fit charcoal filters to the rangehood. If you have built after this was past your builder has broken the law and should be made to fix it at their cost Ahhh, as usual WA is different to everyone else - it's not illegal over here. Having said that, I always recommend to my prestart clients to duct the rangehood to the outside air - ducting to the ceiling space is too much of a safety issue, plus stinks! where to duct the extractor fans 9Aug 03, 2011 8:49 pm From what i can decipher (very loosely) from the the BCA (Building code) it states that mechanical ventilation is required to ventilate a sanitary compartment, laundry or bathroom where there is no natural ventilation (windows, openings etc) present. Where mechanical ventilation is installed or specified, it can however be exhausted into roof cavity where roof tiles (without sarking) are present, open eaves and/or where roof vents are present. On our place, I have a colorbond roof with sarking and closed eaves. Although all my bathrooms/ensuites have windows with natural ventilation and my inclusions stated I was having IXL Tastics with exhaust, they have all been ducted to exterior (eaves), as per BCA. Building NBG Buckingham 320E Eastern Suburbs Melbourne Knockdown & rebuild Build startup 28th October 2010 http://buckingham320e-the4ofus.blogspot.com/ |