Thread: Bathroom Drainage

the ac sheet is only to isolate your tiles from the timber floor below ,if you want a fall to the waste you will have to screed a bed over the ac sheet

I have exactly the same issue ahead of me ozpom. Several people have told me not to worry too much about a slope to a drain. I'm going to make sure my floor is level and just put the drain in the middle. If there's a flood it'll drain out. Small amounts of water sitting around for short periods of time aren't too much of drama. Of course I might be talking complete rubbish...hopefully someone here will confirm this (or otherwise) as a viable option.

Alternatively, someone gave me the great idea (although I'm not going to do it) of slightly sloping the whole floor using spacers under the villaboard and have a drain along one wall.

I'm not keen on the hassle of laying a scree (which I expect I would probably bugger-up).

cheers, Brett

Would have to agree with you Bretts, would only mess up any screeding, probably end up sloping away if anything!

Originally Posted by brettsyoung

I have exactly the same issue ahead of me ozpom. Several people have told me not to worry too much about a slope to a drain. I'm going to make sure my floor is level and just put the drain in the middle. If there's a flood it'll drain out. Small amounts of water sitting around for short periods of time aren't too much of drama. Of course I might be talking complete rubbish...hopefully someone here will confirm this (or otherwise) as a viable option.

Alternatively, someone gave me the great idea (although I'm not going to do it) of slightly sloping the whole floor using spacers under the villaboard and have a drain along one wall.

I'm not keen on the hassle of laying a scree (which I expect I would probably bugger-up).

cheers, Brett

i hope you have home and contents insurance, but then again they wouldnt pay you out if they find youve built your bathroom floor without fall!

guys ya gotta put fall in your bathrooms

Several people have told me not to worry too much about a slope to a drain.

Check Australian Standards and the repercussions

In practical terms as well. If you don't have a fall, you will get ponding and associated issues - potential leaks, deterioration of joints, etc.

I intentionally make sure the fall is MORE than the typical falls done in toilets, esp. for shower areas.

Originally Posted by brettsyoung

Small amounts of water sitting around for short periods of time aren't too much of drama.

The previous owner of our house did our bathroom floor which doesn’t drain properly. It's really annoying and stains the tiles over time. I would give it a really good go to get the level right if I was you.

Originally Posted by brettsyoung

I have exactly the same issue ahead of me ozpom. Several people have told me not to worry too much about a slope to a drain. I'm going to make sure my floor is level and just put the drain in the middle. If there's a flood it'll drain out. Small amounts of water sitting around for short periods of time aren't too much of drama. Of course I might be talking complete rubbish...hopefully someone here will confirm this (or otherwise) as a viable option.

Alternatively, someone gave me the great idea (although I'm not going to do it) of slightly sloping the whole floor using spacers under the villaboard and have a drain along one wall.

I'm not keen on the hassle of laying a scree (which I expect I would probably bugger-up).

cheers, Brett

hey sorry i didnt read yer post properly the first time, yea could do that, put packing on top of the joists under ya fc sheets to get the fall and use a shower channel.. they are quite expensive if you get them custom made but you can get these ones made by mizu available through reece a bit cheaper(standard sizes). Will give your bathroom a real classy look, this system is usually done if your laying big tiles in a small area and the rqd fall cant be achieved

can i add a question to this, our old bathroom floors are tassie oak with lino over the top. Come summer i'll be pulling the lino off, putting down 6mm cement sheet and tiling over it. Now, as there has never been a floor drain or any form of fall do i have to put one in (plumber) or can i simply tile the floor that has survived the last 40 years?
got an uncle that will take care of waterproofing, room has vanity, dunny and shower over tub.
Help appreciated.

A renovation may warrant you putting one in, in a bathroom a floorwaste can only be omitted where there is a WC and a Basin only and these two fixtures must have internal overflows. It doesnt have to be connected to the sewer, you can run a dry floorwaste which simply is a normal grate, reduced to 2" under the floor and run out so it just pokes out past the external wall with a flap valve on it.

Had the plumber in yesterday and he said the bathroom floor waste was optional. I said I wanted an emergency flood drain and he suggested the isolated flap-drain mentioned by wonderplumb. Wasn't worried about fall (floor is level), and advised against laying a mud floor on timber because it will eventually cause the tiles to crack (but maybe that's a cold climate thing). After talking to two plumbers and a builder ozpom I think it's safe to assume it is possible to get away without laying a screed .

cheers
Brett

thanks wonderplumb. seems an interesting one. some people saying it doesn't need to be there and you telling me it 'may' need to be there. I really don't want one there. 40 years with no problem i doubt with improvements to the place that it'll warrant needing one now.
Are you a plumber? What makes it possible to go without one? keeping in mind there isn't one there and hasn't been on there for the life of the house....

Originally Posted by vlv8vic

thanks wonderplumb. seems an interesting one. some people saying it doesn't need to be there and you telling me it 'may' need to be there. I really don't want one there. 40 years with no problem i doubt with improvements to the place that it'll warrant needing one now.
Are you a plumber? What makes it possible to go without one? keeping in mind there isn't one there and hasn't been on there for the life of the house....

Mate go for it, a lot of older homes where built with only a bath in the bathroom, with bits and pieces added on here and there, creature comforts such as an indoor flushing toilet!
It may have something to do with victorian legislation over the national code, each state has a seperate code of practice.
One of the houses I grew up in in the central west had carpet in the bathroom, and a lot of older homes in colder climates did have.
I was simply refering to the national code (AS 3500) where a bathroom shall (when the code says shall it means must) have a floor waste, UNLESS it is a powder room type of set up with a toilet and hand basin only and these two fixtures must have internal over-flows, but a floor waste is till desirable in these instances.

LOL I can't imagine carpet in a bathroom. Our place has always had the shower over bath, toilet and basin in teh one room without a floor waste. Any places i rented were the same so it must be something to do with the Victorian codes. These things are never meant to be easy to find out are they!?!