Floor tiling advice

27 Sep 2011
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United Kingdom
I'm floor tiling a wc/small cloakroom

The existing toilet is being replaced with a 2 in 1 toilet/basin..

After removing the toilet to tile the concrete floor, i noticed that where the toilet sat, it is slightly raised

What i wanted to know is whether i have to leave this and just tile around it or would it be wise to get the SDS out and chisel the protruding parts, then level and tile?


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yes, remove the lumpy stuff - you can use any kind or hammer and chisel or a chisel in a sds drill.

it would also pay you to cut the soil pipe hub off at floor level - doing that would give you room to play when installing your fixture.

always try and tile under fixtures - dont attempt to tile around them.

its possible to probable that the earth cable is redundant - a remnant of old Regs. ask in the elec forum if you can ditch it?
If he cuts the soil pipe hub off at floor level how would you re-position the waste outlet when it’s set in concrete?
I’ve got an issue with mine that the outlet is too far from the wall.
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the OP's soil pipe is centred from any surrounding walls - after removing the hub the soil pipe is still centred.

what kind of WC do you have - old or new?
is your floor outlet old or new?
Last edited:
My soil pipe outlet is about 180mm from the back wall. The soil stack is in the corner to the right of the toilet. The soil pipe connects to the soil stack under the concrete floor then goes outside to the drain.
Currently we have an old low level cistern toilet, but was planning on putting in a back to the wall or wall hung with a slimline concealed cystern.
why dont you post a pic showing the WC & WC spigot - and the floor outlet - and the soil pipe?
Here’s the toilet as it is now.


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The protruding part of the floor was chiseled out with the SDS and the floor was screeded using a self levelling compound.

What i want to know is whether i need to wait for that area to fully dry before tiling?

I am getting impatient as i have been waiting nearly a week and i am keen to finish this job

I have even tried turning up the heat
Is it not dry yet???
I always had the opposite problem with self levelling compound, it dries too quick, while you're pouring it, despite following the manufacturer instructions to the letter.
Found that it's always best to add a further cup of water to the mix so to slow down the drying process without compromising the final strength.
Half of the area is dry. The other half is cold to the touch, slightly damp/dark in colour

Do you have to wait for it to be fully dry before tiling?
Screw it, I'm tiling over it dry or not..

A tradesman wouldn't wait this long

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