help with cloak room sink

[benbarbanel]

Please help me, i have a downstairs cloak room in my new build property.
The waste pipe from the pedestal sink goes down in to the floor and there is the most horrendous smell coming from this area as it is not sealed. there is a large gap round the pipe in the hole in thew floor.

how do iseal this? what do i seal it with ?

many thanks

 

[Bahco]

There should not be a smell.
Is your waste pipe going into a trap?
Get your floorboards up and see exactly what is happening.
If possible you should re-route your waste pipework so that it exits outside to the hopper or stack.

 

[benbarbanel]

it goes into a concrete floor! not a wooden floor!

It smells of waste

 

[Bahco]

Is re -routing an option.?
You could then seal up the hole.
Is there a trap fitted to your sink?

 

[benbarbanel]

cannot re-route.

whats a trap? Cant i just seal it with some sort of sealant like mastic?

 

[kevplumb]

Please help me, i have a downstairs cloak room in my new build property.

get the builders back

 

[benbarbanel]

that would be best, but what will they do? mastic it? is that safe?

 

[Bahco]

Kev's right.

If it is a new build it is not your responsibility.
Phone the builders NOW

 

[brumylad]

measure the diameter of the pipe buried in the concrete and the diameter of the waste pipe from the sink. There should be an adaptor to couple the two so a seal is formed.

Take the measurements to a local plumbers merchants. Or post them here with a picture if possible.

 

[lord nicon21]

do you have one of these http://www.readersdigest.co.uk/diy/webpages/318_319.htm
http://www.readersdigest.co.uk/diy/icons/IMG_319_6.jpg/$FILE/IMG_319_6.jpg

 

[kevplumb]