Pan Waste Connector slightly up hill

[NiccoloC]

The old toilet has been changed for a vanity unit.

There is a soil pipe adapter, very well fitted onto the old cast iron pipe which brings the diameter up to modern standards. This has a deep rubber connector aperture.

The soil pipe attaches about 2cm higher than the toilet outflow which makes it slightly uphill.

When fitted there was a slow leak from the standing water both at the connection to the toilet and at the connection to the adapter.

The toilet connection is unglazed, due to it being a vanity unit style.

I have been advised that upgrading the leaky Viva Slinky-Fit Flexible Pan Connector 200mm to a Macfit Flexible WC Connector Straight 160mm should prevent the leak at the toilet output as the Mac has a much tighter seal there. I am concerned about the connection to the soil pipe adapter.

It is unsuitable to raise the new toilet on a plinth.

Any technical advice?

 

[Riley]

As the old adage goes sh** rolls down hill. Really needs sorting

 

[rpm]

Flexiable connectors are never a good idea in my book, is the other one you mentioned a solid connector and yes you can use a plinth.

 

[NiccoloC]

Flexiable connectors are never a good idea in my book, is the other one you mentioned a solid connector and yes you can use a plinth.

Thank you.
A plinth may ruin the look of the modern system, but may be only way to go.

Flexi connector is due to offset in height and as it is vanity unit. The connector can be observed connecting to both toilet and the soil pipe adaptor before being pushed into place.

A rigid connector may not line up exactly and not sure if I can get one of the correct length to fully insert into the adapter.

 

[JCplumb]

If you cut your plinth to the exact footprint of the pan, i.e. put the pan on the piece of wood and draw round the bottom - you can then paint it up and you'll not notice it unless you're looking for it.

 

[Stigster]

Thank you.
A plinth may ruin the look of the modern system, but may be only way to go.

Flexi connector is due to offset in height and as it is vanity unit. The connector can be observed connecting to both toilet and the soil pipe adaptor before being pushed into place.

A rigid connector may not line up exactly and not sure if I can get one of the correct length to fully insert into the adapter.

Whatever you do, it must flow downhill.

 

[Ben-gee]

Any reason you can’t do it properly and alter the soil stack?

 

[Steve weightman]

Not to much hassle to lower the outlet with it being behind the unit it won't have to be tiled etc the same as before.

 

[Ben-gee]

Steve it’s a cast iron stack, I think that is usually classed as hassle! However why bodge it? Just do it properly - once.

 

[Steve weightman]

It is possible depending on the branch to put plastic 4 inch into cast stack and various fittings get back onto the pan

 

[NiccoloC]

Any reason you can’t do it properly and alter the soil stack?

It is cast iron and going through brick wall with cavity insulation and external render on the 1st floor.
Inside has been heavily cemented in.

 

[Riley]

Plinth required then

 

[NiccoloC]

Going to try plinth 1st.
Measured and 22mm plinth is sufficient to raise toilet outlet above connection to stack.
If this does not work it can be undone without affecting anything else.
Thanks for all the advice.

Photo is toilet lined up on plinth.

 

[Timmy D]

Either raising the pan or knocking out the cast.

 

[ShaunCorbs]

How much of the cast is out the wall ?

 

[NiccoloC]

How much of the cast is out the wall ?

Almost none, the adapter goes into the wall to meet the cast iron.

 

[Steve weightman]

How much of the cast is out the wall ?

I'm guessing it could be lead to the pan connector

 

[NiccoloC]

I'm guessing it could be lead to the pan connector

It appears to be a rubberized adapter pushed directly into the pipe.

 

[WHPES]

Either raise on a plinth or change the outlet height (or buy a WC with a higher outlet)

 

[NiccoloC]

How much of the cast is out the wall ?

None, adapter goes into wall.

 

[NiccoloC]

Used a plinth and mcalpine connector.
Disguised the plint with a sealant strip.
Seems to so the trick.