Hello, first post so don't throw things please

I am planning to relocate a bathroom across the hall to what is currently a bedroom.

I have shuffled bathrooms around before, but never actually moved the whole lot. Also, I have never installed a toilet and am not sure what the soil stack issues will be. (The toilet is moving 10ft away from where it is now).

Any early stage thoughts or things to consider?

You have to consider the soil pipe where and how it connects to the drain, with running through the middle of the lounge ceiling.

A drawing may help

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Also, this work is subject to building control, who will insist on everything being done correctly...

Thanks for the replies. Here are the floorplans with the stack marked as red and the current location of the pan as "A".

As I said it would be a major problem without cutting and trimming joists to get the soil back to it's present location, unless you can box it in below or have false ceilings.

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So a challenge! In terms of routing the soil back to the stack, what sort of limitations are there for turns, angle of fall, distance etc.?

Obviously it depends on where the toilet will be sited but what about dropping the new pipe down from the new bathroom, behind the sitting room door (boxed in) and down in to the lower ground, then run across the ceiling and connect up underground outside the kitchen door. (See my revised pic)

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Cheers,
Darren

Property Refurbishment & Maintenance Dorset

You'll be looking at a minimum of 1-40.

Looking at the plan, if the joists run left to right you maybe able to get access from the kitchen to turn it into the existing stack.

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The revised pic routing looks like it would work well, but if I can I want to avoid disturbing so many ceilings and keep things simpler.

The joists do run from right to left. So a fall of 1 inch for every 40 traveled...

Are there also guidelines for the number of turns and curves the connection takes or as long as it drops sufficiently can it go anywhere?

Also, does it have to be a particular kind of pipe?

Perhaps it is time to go buy a book...

Why would you need a book.

The minimum fall is 1-40.

Standard pipe is 110mm plastic, and until you investigate whether it can go under the floor, or you have a route back to the main soil pipe we can't help any further.

Approved Document H may give you a few ideas as to how it has to be.

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Thankyou, I'll check out the document and have a poke around under the boards next week. Was just curious to know how much of a snakey path I can take with this extension pipe - most of the examples I have seen are short straight lines to the soil.

You can cut the waste pipe size down using a macerator. It will allow you to be much more flexible in locating your new bathroom.

I don't have any experience using this method and I'd avoid it if possible. However, if it means you can have your bathroom where you want it instead of not at all, it might be worth considering it.

Click here

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At least one Wc must be connected to the soil stack.

A macerator can only be use for an additional toilet.

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