What to with this toilet waste pipe for laying subfloor?

[Joe Fixit]

Hi all,

Just relaying new bathroom subfloor and wondered what I should do with the waste pipe so I can make my cut outs on the flooring. It used to be a long Flexi tube connected to this so is it best to replace it with the same? (If so any recommendations)

Or would it be best to have a sturdy pipe extended to meet new floor level first and then attach the Flexi?

 

[Stuckinarut]

Measure the diameter of it and go from there. I would always advise rigid connections.

 

[Joe Fixit]

Measure the diameter of it and go from there. I would always advise rigid connections.

Thanks, it's about 10.5cm

I think I will need to have a Flexi due to locations of the other waste pipe and water pipes. Be quite hard to position the waste. The actual gap between the smaller waste and water is about 8.7cm

 

[Joe Fixit]

Could I use something like this? Could work as the middle section of the pipe seems slightly smaller. If so, anyone know of this is a simple push fit or best to use glue/silicone?

Viva Extended Straight WC Connector

Extended straight rigid polypropylene WC pan connector for use with 4" (110mm) pipe. Manufactured in high quality polypropylene and suitable for all 4"/110mm PVC-U and cast iron soil pipe.• Length Can Be Cut To Suit• Suitable for all 4"/110mm PVC-U and cast iron soil pipe• 90-107mm inlet fits...

www.toolstation.com

 

[Hugh Jaleak]

Use a Pan Connector extension, then Pan Connector into that.

 

[Joe Fixit]

Use a Pan Connector extension, then Pan Connector into that.

View attachment 376572

Is there no way to use the one in my post as the smaller diameter in the middle would really help my situation?

 

[Joe Fixit]

If anyone could answer the above that'll be great as I was hoping to get this done today

 

[Stuckinarut]

The one that @Hugh Jaleak appears to be the same diameter and would probably work better. If you want to use yours, when you connect the 90 degree connector you'll need a short piece of pipe in between as it may be susceptible to a leak. The other one doesn't.

 

[Joe Fixit]

The one that @Hugh Jaleak appears to be the same diameter and would probably work better. If you want to use yours, when you connect the 90 degree connector you'll need a short piece of pipe in between as it may be susceptible to a leak. The other one doesn't.

Thank you so much. Do you mean same dimensions for both Hugh's suggestion and mine? It seems to be.

I was mainly trying to use the one I found to make the soil pipe rigid (as suggested) below floor level. Then as I'm likely to have a back to wall toilet, I would then use a Flexi to connect the one I found to the toilet.

Will this be ok?

 

[Stuckinarut]

Thank you so much. Do you mean same dimensions for both Hugh's suggestion and mine? It seems to be.

Yes

I was mainly trying to use the one I found to make the soil pipe rigid (as suggested) below floor level. Then as I'm likely to have a back to wall toilet, I would then use a Flexi to connect the one I found to the toilet.

Will this be ok?

It should be ok, but as I say, if you use the one you suggested it may leak unless you put a small piece of pipe in between. I have used plenty of the one like Hugh's and can't remember having an issue. If you search for an extension rigid pan connector if you wanted a more rigid one.

 

[Joe Fixit]

Yes

It should be ok, but as I say, if you use the one you suggested it may leak unless you put a small piece of pipe in between. I have used plenty of the one like Hugh's and can't remember having an issue. If you search for an extension rigid pan connector if you wanted a more rigid one.

Thanks for your help.

Ive managed to chisel out the hole on the joist so that the water feed pipe can move slightly more to create a bigger gap above the waste pipe.

Hopefully I can get the pipe you guys suggested.

Would I need to add any silicone/glue to that pipe or just simple push fit?

 

[Stuckinarut]

Silicone grease would certainly aid the installation but often just push fit. Do not use glue

 

[Joe Fixit]

Silicone grease would certainly aid the installation but often just push fit. Do not use glue

Thank you guys so much for your help. One last question, I was thinking of getting this toilet (see below)

Should I cut the extension pipe so it's just above the finished tile floor level or near the height to be level with the toilet connection point?

Difference would be whether to try and get the flexi doing the near right angled bend or a rigid 90degree and then Flexi being more horizontal (hope that makes sense).

Boston Rimless Fully Back To Wall Close Coupled Toilet With Premium Soft Close Seat

Boston Rimless Fully Back To Wall Close Coupled Toilet With Premium Soft Close Seat

www.bathroommountain.co.uk

 

[Hugh Jaleak]

The one I recommended is designed to allow the finned end of a Pan Connector to fit in snugly, and make a suitable seal. Ideally I would suggest you leave it so it's slightly proud of the new floor, and cut the flooring around it snugly to help keep it in place, then fit your Pan Connector into the extension section above finished floor level.

Use rigid Pan Connectors wherever possible!