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How to install puddle flange for 50mm floor waste?

I need to install a puddle flange prior to waterproofing with Gripset membrane. As the pipe is 50mm is there a puddle flange that fits into this pipe or do I need an adapter? Does Bunnings sell butyl squares for waterproofing puddle flanges?

The previous owners had loose lay vinyl sheet that covered the bathroom floor including the waste pipe.

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EricL

Hello @Ambrosia

Just a friendly reminder that any plumbing work needs to be carried out by a registered plumber for safety and compliance.

Thank you for sharing your question about installing a puddle flange. The installation of a puddle flange is not easy and involves adjusting the height of the wastepipe so that the flange sits properly and in level with flooring substrate it will be installed on. I recommend not taking any chances with the puddle flange installation and getting a professional to install it.

From memory the flange is installed first and is sealed along with the waterproofing above it. But it's best to confer with a waterproofing agent as they will be familiar with rules and regulations of the local council.

If you have any other questions we can help with, please let us know.

Eric

Ambrosia

Hello @EricL

Sorry my title wasn't clear I meant what products do I need to buy. I ended up purchasing a 50mm puddle flange that fit the pipe, no adaptor required. And the 80mm Mondela square drain grate. And fibre cement flooring sheets.

Council advised Tasmania doesn't required a licensed waterproofing tradesperson, but installation must be in accordance with AS3740 & NCC. A certificate of compliance needs to be provided to council.

Thanks again.

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