I want to replace the cast iron soil pipe in my bungalow, with PVC. The
junction for the toilet is a couple inches above ground level, and I'd
thought that I could remove the junction, clean up the socket, and seal
the PVC pipe and new junction (I want to raise it slightly) into that.

But I've realised that my soil pipe is 3 1/2" so presumably this
technique isn't going to work? Can I get an adapter - preferably via
internet or mail order somewhere?
--
Steve Loft

"Steve Loft" wrote in message
...
I want to replace the cast iron soil pipe in my bungalow, with PVC. The
junction for the toilet is a couple inches above ground level, and I'd
thought that I could remove the junction, clean up the socket, and seal
the PVC pipe and new junction (I want to raise it slightly) into that.

But I've realised that my soil pipe is 3 1/2" so presumably this
technique isn't going to work? Can I get an adapter - preferably via
internet or mail order somewhere?

Steve Loft

What else is connected to the stack. Soil pipes are normally 110 mm (4'') so
the remaining stack above the WC branch may only be venting pipe to above the
roof. That is unless you have other appliances like baths and basins connected
above the WC branch.

If there is nothing else on the stack then all you need is smaller diameter uPVC
pipe. They come in the same sizes as cast pipe so you should be able to pick it
up at B&Q.

BigWallop wrote:

What else is connected to the stack. Soil pipes are normally 110 mm (4'') so
the remaining stack above the WC branch may only be venting pipe to above the
roof. That is unless you have other appliances like baths and basins connected
above the WC branch.

There's nothing else on the stack, the bath and basin have a separate pipe.


If there is nothing else on the stack then all you need is smaller diameter uPVC
pipe. They come in the same sizes as cast pipe so you should be able to pick it
up at B&Q.

Ah, didn't realise, I thought only 110mm was available. And I was in the
Parkhead B&Q last night too. Blast.

My basic problem is that I'm replacing the WC and the outlet from the
new one will be higher than the old one - I've worked out that the
vertical distance between the centres of the outlet and the existing
soil pipe will be about 90mm, and the horizontal distance between the
ends of the pipes about 105mm. I can't seem to find a pan connector to
fit that. The flexibles ones all seem to require a minimum distance
greater than what I'll have (about 140mm in a straight line, I think).

So I thought it was probably time to replace the CI soil pipe and
connect the PVC replacement through the (wooden) wall a bit higher up to
make connection to the WC easier.
--
Steve Loft

"Steve Loft" wrote in message
...
BigWallop wrote:

What else is connected to the stack. Soil pipes are normally 110 mm (4'')
so
the remaining stack above the WC branch may only be venting pipe to above
the
roof. That is unless you have other appliances like baths and basins
connected
above the WC branch.

There's nothing else on the stack, the bath and basin have a separate pipe.


If there is nothing else on the stack then all you need is smaller diameter
uPVC
pipe. They come in the same sizes as cast pipe so you should be able to
pick it
up at B&Q.

Ah, didn't realise, I thought only 110mm was available. And I was in the
Parkhead B&Q last night too. Blast.

My basic problem is that I'm replacing the WC and the outlet from the
new one will be higher than the old one - I've worked out that the
vertical distance between the centres of the outlet and the existing
soil pipe will be about 90mm, and the horizontal distance between the
ends of the pipes about 105mm. I can't seem to find a pan connector to
fit that. The flexibles ones all seem to require a minimum distance
greater than what I'll have (about 140mm in a straight line, I think).

So I thought it was probably time to replace the CI soil pipe and
connect the PVC replacement through the (wooden) wall a bit higher up to
make connection to the WC easier.

Steve Loft

I don't know the whole layout of where the pipes are in relation to the pan, but
there are numerous ways to take up height adjustments and length changes without
having to dig out the old pipes.

Could you describe the layout in a bit more detail please. You say the soil
pipework comes in through a wooden wall (stud partition ?), but where is this
wall in relation to the WC ? I was under the impression that the soil pipe was
outside the house, is this correct ?

In which direction does the WC face ? Does the waste outlet from the pan point
toward the outside wall and go through to the outside stack ?

More information would be most helpful please.

BigWallop wrote:


Could you describe the layout in a bit more detail please. You say the soil
pipework comes in through a wooden wall (stud partition ?), but where is this
wall in relation to the WC ? I was under the impression that the soil pipe was
outside the house, is this correct ?

The house is timber framed and timber clad, i.e. entirely 'wood' - but
the internal walls seem to be constructed of a cardboard/hardboard type
material.

The soil pipe is outside the house.


In which direction does the WC face ? Does the waste outlet from the pan point
toward the outside wall and go through to the outside stack ?


The rear of the WC points straight at the outside wall, behind which is
the soil pipe, there's a junction just above the ground outside which
branches off into the bathroom to connect to the WC. So the soil pipe is
on the other side of the wall, immediately behind the WC.

More information would be most helpful please.

The existing WC fits OK for two reasons - first, its outlet is lower
than the new one. Second, whoever installed it dug into the concrete
floor to lower it an inch or two. I guess they did this because they
were faced with the same problem as me. I want to fill the hole in the
concrete and level the floor.

So I'm faced with a drop of about 90mm between the WC outlet pipe and
the CI pipe which comes through the wall from the soil stack. In other
words, the bottom of the WC outlet pipe is 140mm off the floor, and the
bottom of the pipe coming through the wall is about 50mm off the floor.
And there's only about 105mm horizontally between the ends of the pipes,
which seems to rule out the use of a flexi pan connector. I can't bring
the WC out from the wall due to lack of space.

--
Steve Loft

"Steve Loft" wrote in message
...
BigWallop wrote:


Could you describe the layout in a bit more detail please. You say the soil
pipework comes in through a wooden wall (stud partition ?), but where is
this
wall in relation to the WC ? I was under the impression that the soil pipe
was
outside the house, is this correct ?

The house is timber framed and timber clad, i.e. entirely 'wood' - but
the internal walls seem to be constructed of a cardboard/hardboard type
material.

The soil pipe is outside the house.


In which direction does the WC face ? Does the waste outlet from the pan
point
toward the outside wall and go through to the outside stack ?


The rear of the WC points straight at the outside wall, behind which is
the soil pipe, there's a junction just above the ground outside which
branches off into the bathroom to connect to the WC. So the soil pipe is
on the other side of the wall, immediately behind the WC.

More information would be most helpful please.

The existing WC fits OK for two reasons - first, its outlet is lower
than the new one. Second, whoever installed it dug into the concrete
floor to lower it an inch or two. I guess they did this because they
were faced with the same problem as me. I want to fill the hole in the
concrete and level the floor.

So I'm faced with a drop of about 90mm between the WC outlet pipe and
the CI pipe which comes through the wall from the soil stack. In other
words, the bottom of the WC outlet pipe is 140mm off the floor, and the
bottom of the pipe coming through the wall is about 50mm off the floor.
And there's only about 105mm horizontally between the ends of the pipes,
which seems to rule out the use of a flexi pan connector. I can't bring
the WC out from the wall due to lack of space.

Steve Loft


Brilliant Steve, that's the information I needed to know. Can you tell me how
much of the CI pipe is sticking through the wall into the bathroom please ?

Could you make the connection between them using two 90 degree bends ?

Using two of these:

http://tinyurl.co.uk/c93d (short version)

which can be cut to length so they fit together and form an "S" sort of shape
from the pan to the CI pipe may help, and be a lot cheaper.

http://www.diynot.com/shop/Plumbing/...R_90_BEND/6856 (long version)