First a quick thank you to diynot.com for exisitng, my first port of call for any diy issues!
We had our downstairs bathroom refurbed successfully, and had the same fitter back to put a new one in upstair. It is in the centre of the house so no windows. A bath with shower, WC & sink, small in size. The fitter supplied the fan. Electrics done by a registered sparkie. We have an inline extractor fan in the ceiling which vents through the roof eaves. Early in the job I pointed out it did not run on, but just turns on and off with the light switch. I had assumed it would be on a timer (like the one I had specified for downstairs) but I was reassured the fan was so good it would be fine. Now at the end of the job I have read if there are no windows there needs to be a run on?:
http://www.fantronix.com/acatalog/Product_options_explained.html
I pointed this out to the fitter who got a bit shirty with me and replied
"The building regs for this are a bit of a grey area. The minimum requirement is 15 litres per second. The fan you have extracts at 68 litres per second. So even without an over run this fan would extract more than twice the minimum requirement including the 15 minute over run".
I have tried reading & re-reading Building Regulations part F to no avail. This thread on IET seems to know what it is on about:
http://www.theiet.org/forums/Forum/...ORUMVIEWTMP=Threaded&catid=205&threadid=38986
and to summarise I think it says if no windows there should (not must?) be an over-run for new builds. If it is not a requirement I think I still would want a timer, and will pay to get one fitted/the fan changed. If it is a requirement the fitter should really sort it though, hence my long post! Thanks for any input.
We had our downstairs bathroom refurbed successfully, and had the same fitter back to put a new one in upstair. It is in the centre of the house so no windows. A bath with shower, WC & sink, small in size. The fitter supplied the fan. Electrics done by a registered sparkie. We have an inline extractor fan in the ceiling which vents through the roof eaves. Early in the job I pointed out it did not run on, but just turns on and off with the light switch. I had assumed it would be on a timer (like the one I had specified for downstairs) but I was reassured the fan was so good it would be fine. Now at the end of the job I have read if there are no windows there needs to be a run on?:
http://www.fantronix.com/acatalog/Product_options_explained.html
I pointed this out to the fitter who got a bit shirty with me and replied
"The building regs for this are a bit of a grey area. The minimum requirement is 15 litres per second. The fan you have extracts at 68 litres per second. So even without an over run this fan would extract more than twice the minimum requirement including the 15 minute over run".
I have tried reading & re-reading Building Regulations part F to no avail. This thread on IET seems to know what it is on about:
http://www.theiet.org/forums/Forum/...ORUMVIEWTMP=Threaded&catid=205&threadid=38986
and to summarise I think it says if no windows there should (not must?) be an over-run for new builds. If it is not a requirement I think I still would want a timer, and will pay to get one fitted/the fan changed. If it is a requirement the fitter should really sort it though, hence my long post! Thanks for any input.
