Fitting WC pan query

[truman]

Hi all. Fitting new close coupled wc in place of old low level wc. 100 year old cast iron soil pipe comes straight (well slightly sloping) thro the wall with a big useless flange on the end. So a longish straight spigot connector will be ok, no problem there. However carefully measuring the hole centres, the new pan outlet is 1cm lower (at 180mm) than the soil pipe - so the waste will have to flow uphill a bit. Question is, does this small amount really matter, or should I raise the wc pan 1cm with a plywood base or something?

Thanks truman ........

[Andy Hall]

Yes it does because you may find that it will stop the contents of the bowl from being discharged into the soil pipe effectively and create a tendency to blockages.

A base made from (say) 12mm WBP (basically water resistant ply would do the trick as you suggest.

.andy

To email, substitute .nospam with .gl

[John Stumbles]

If the old iron pipe is sloping can you cut it back close to the wall so you can get a long multiquick to give a bit of fall?

[adder]

I'd say try it and see. I doubt 1cm would make much a difference over a short distance with this volume of water.

[truman]

| > Thanks | > truman | > ........ | | I'd say try it and see. I doubt 1cm would make much a difference over | a short distance with this volume of water.

Thanks to all. Just discovered the pan outlet is just a bit too low to enter the cast iron flange, and we've decided not to cut the flange off, so we're raising the pan with 12mm wpb.

truman .......