Uneven bath outlet
Drainage and wastage systems and plumbing help, advice and answers

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Uneven bath outlet

by jrterror » Thu Sep 08, 2022 11:01 pm

Hi. This is an issue that I may not be able to explain very well. The pictures may not help either.
Just installing the the Mcalpine bath trap and outlet. I needed it because it gave me the height that I needed to enable the pipes to run.
Anyway, when I attempt to tighten it up, the top section keeps pulling up at at angle. When I look at the bath outlet, it's nothing like even. The thickness of the bath is greater at one side of the hole than at the other.
I cut a spare rubber in half (the one that sits underneath the bath) and placed it on top of the whole rubber that is to be compressed under the bath. This helps a great deal, but I'm not sure if it will do. I thought about building up the underside of the outlet opening (at its thinnest point) with plumbers mate to even it out. And then perhaps plenty of silicone instead of the supplied rubber under the flange that sits over the opening within the bath (to seal it to the bath. But I worry about using silicone. Should I really be trying to use the supplied TPE seal?

Can't seem to add photos. Sorry

Did any of that make sense?

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Re: Uneven bath outlet

by stoneyboy » Sun Sep 11, 2022 10:05 pm

Hi jrterror,
Unless you make the flange an even thickness you will always have problems. Suggest you buy some epoxy car body filler or epoxy wood filler and use this on the underneath to even it out. Clean and sand with coarse sand paper before you start.
Regards S

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