Cloakroom Basin Plumbing

typeractive

Hi all,

I'm looking to buy a very small basin for my en suite. Ideally it needs to project less than 230mm from the wall. The thing is - it's going to be onto a exterior brick wall, though the waste needs to run along a boxed section to connect into the shower waste and further onto a saniflo system.

Now, I looked at space saving sinks that are wall hung with these lovely chrome bottle traps suspended below - like this:



(That's just an example). My worry is I have a 'boxed' section that will rise up to meet the basin height, to allow the waste to be plumbed against the wall and I'm thinking the actual plumbing of a sink like this will be tricky compared to a conventional waste out?

Therefore, I thought I could look at basins built into a vanity unit, that would allow me to 'hide' the inside pipework and it could run into the boxed section 'neatly' and away on it's route. One of these basically:



Obviously it means cutting a hole into the side of the unit, but that would be ok to feed my pipe through, like this:



So my questions before buying such a vanity unit -

1. Do people think such a vanity unit would be less hassle to install?
2. Will I still need a waste 'trap' or can my pip come straight down from the sink?
3. If I do need a waste trap, is it possible to get tight fitting ones, so it can go on it's side - as opposed to project from the wall?

I may be fidgeting over the minute details here, though the last thing I want to do is order the thing and then have to try and send it back because it won't be appropriate.

Any suggestions would be great!
Cheers
:j

keystone

Can the waste go straight out through the wall an it's route to an appropriate drain be dealt with on the exterior of the building? It doesn't have to join up to the saniflo.

Oh yes it must have a water seal in a trap especially if its going into the soil pipework.

bungle4by4

with no water trap you will smell the sewer or soil pipe mate,

stinky

sgoode

You can get flexible traps which may help. A bit like corrgated plastic tube that you can bend into any shape. You can bend it to form a trap/ubend and then join it up to your waste pipe. I had to use one as I couldn't find any traps that would line up my new sink to the old waste pipe, and I didn't want to cut another hole in the wall. I got mine in B&Q.

27col

That is exactly what I did in our downstairs toilet. False wall to hide the pipes and a semi pedestal to hide the sink waste and tap connections. In any event it is always better to use a vanity unit of some sort to provide extra storage.

typeractive

keystone wrote: »

Can the waste go straight out through the wall an it's route to an appropriate drain be dealt with on the exterior of the building? It doesn't have to join up to the saniflo.

Sadly not - there's no pipes out the front of the house - otherwise I wouldn't be using a saniflo anyway.

You could have a false wall to basin height (or just above so you get a shelf behind basin level) with at least 32mm depth within which would be just enough to run the waste pipe. Waste pipework and other pipework can all run through it. Provide suitable access in case of leaks!

Gives you a useful shelf to put the usual bathroom clutter on at a height that would be more useful than boxed in pipes at skirting level. Then actually also looks like it should be there rather than be obviously hiding pipes! Could also run other pipes for towel rail down there and any necessary cables.

Sadly due to the depth being so tight this won't be possible behind the basin. Here's a photo that shows a basic timber frame. I'll be cutting into the frame to put the vanity unit in. Then the pipes will run round the walls. Not ideal though sadly due to the layout and space it's the most suitable option - unless I remove the toilet.

The vanity unit should fit in nice and snug against the wall - which is 228mm deep.

Here's a pic to try and help visualise:



I plan to bring the boxed saection up to the window sill height to make it look less like it's hiding pipes.

You can get flexible traps which may help. A bit like corrgated plastic tube that you can bend into any shape. You can bend it to form a trap/ubend and then join it up to your waste pipe. I had to use one as I couldn't find any traps that would line up my new sink to the old waste pipe, and I didn't want to cut another hole in the wall. I got mine in B&Q.

That sounds the likely way forward. I'll just have to get it and give it a go I guess. It's a fiddly job this en suite, but it is possible and it will be useful to me. The alternative is to scrap the idea and make it a walk in wardrobe, but still - I'd rather have a little bathroom there instead - the pipes are all set in place ready (with a bit of tweeking).

It's all good fun!

keystone

typeractive wrote: »

Sadly not - there's no pipes out the front of the house - otherwise I wouldn't be using a saniflo anyway.

OK but, not ideal, taking it out running along the outside with the proper fall then bringing it back in again to join the saniflo might be an option?

Cheers

Edit just seen that Andrew got there first.

typeractive

andrew-b wrote: »

Where is the saniflo relative to this ...am i right it's still on completely the opposite side to the vanity unit (what's the current design after the other nights moving things about as i'm losing the plot!) and the waste pipes is heading under the window to the corner near the window then around the corner?

Hiya

Yes - that's correct. After redesigning, on paper things fit - though in reality they were awkward, so the original idea is what I'm sticking with. So yes - the toilet and saniflo are opposite the sink.

This seems quite quirky, and undoes some of the work already done.... but what if you were to remove your framework from the walls on the basin side and not take the wastepipe around under that window on the inside at all....but instead route the waste pipe straight through the wall..run it along outside under the window then bring it back inside into the framework on the wall in that far corner by the window.

Is the frame fixed to wall yet though? If it is you might have to remove it again to get your waste pipe in..just looks like it could be an issue to me!

Funnily enough - after I had posted I did think of this idea. I also think it sounds quite fun. I don't mind a small pipe running on the outside of the wall and coming back in. Only the top and bottom of the framework is fixed - the 'uprights' are not fixed in yet. So this idea is possible. I think I will need to work backwards - i.e. from the saniflo, up to the shower, then round the outside of the wall and along to the basin. It sounds quite a fun idea too. I'd be happy with either option really, though this would make it 'feel' like there is a wee bit more space.

I just need to get the fall ratio correct. Can anyone advise upon that?

typeractive

keystone wrote: »

OK but, not ideal, taking it out running along the outside with the proper fall then bringing it back in again to join the saniflo might be an option?

Cheers

Edit just seen that Andrew got there first.

Thanks to everyone for the ideas and input when thrashing ideas out - but a special thanks to AndrewB and Keystone as you always give me input on these threads and I appreciate it takes time to feedback. It REALLY is appreciated, and please do continue to chip in when and where you have the time.

I'd buy you both a beer, though these cyber ones are the best I can offer at the moment!

:beer::beer:

Cheers!! :j