Venting from downstairs loo

[WabbitPoo]

SWMBO wants a loo putting in the new space under the new stairs. This room is slap bang in the middle of the house and a good distance from an outside wall.

Apart from the headaches I will have getting the output from a macerator toilet to the waste stack, I have to put an extractor in too. That means running the pipe in the ceiling space the length of the house (some 10m at least). Will a fan actually work over that sort of pipe run?

Is there a different solution, one which won't need me to drill a large diameter hole in walls to run the vent pipe to the outside?

Beginning to think its a cr@p idea.

 

[JohnD]

barmy idea.

Do a search on macerator.

 

[Richard C]

Even the higher rate toilet extract fans are not recommended for use on ducting lengths over 3m. You can, of course, use a bigger fan, perhaps a hob extractor unit or one of the larger wall mounted kitchen units. My downstairs loo is in the centre of the house & has a large wall mounted fan connected to a 5m timber duct running through the garage to an outside wall (not my installation). It works fine but is quiet large & fairly noisy when operating!

It’s the macerator that’s not a good idea; having no experience of them at all, I looked at fitting one in a new en-suet I was putting in but couldn’t find anyone who had a good thing to say about them, including a builder friend! In the end I put in a new soil stack.

 

[^woody^]

I recall a few years back, that someone had invented a fan which connected to the flush pipe and extracted via the pan rim where the water flushes from.
It was claimed to be the most efficient way to extract smells!!

How it worked or if it eventually got marketed, escapes me

 

[carryoncamping]

Sounds like you want a centrifugal fan e.g.
http://www.screwfix.com/app/sfd/cat...0R1ZL2CSTHZOCFEY?cId=100593&ts=62844&id=13201

Which can handle ducts upto 10m