Browse Forums Bathrooms and Laundry Re: puddle flange needed on new floor waste (Concrete Floor) 2Oct 07, 2020 9:40 pm Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: puddle flange needed on new floor waste (Concrete Floor) 4Oct 07, 2020 10:10 pm Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: puddle flange needed on new floor waste (Concrete Floor) 7Jan 21, 2021 8:03 pm moudzj Absolutely don't need a puddle flange re concrete sections as per AS4654. However, if would be preferred for the reasons chippy listed. Compliance can be achieved by sealing around the pipe seam with a mastic sealant, and waterproofing the floor 100mm or so into the waste. Weakest link however is the pipe seam (joint interface with concrete), which the flange would protect. Can get rubber flanges for only afew bucks for this. If you want to waterproof over the screed, then the flange would also be beneficial for the reasons chippy listed, however below the screed is always better. Goodluck Your calling up the wrong Australian Standard you need to look at AS3740, in that standard it stipulates the follow Membrane to drainage connection requires that all floor wastes installed in an area requiring a WPM are required to have a drainage flange, and the WPM is required to be terminated at or in the drainage flange to provide a waterproof connection. Re: puddle flange needed on new floor waste (Concrete Floor) 8May 03, 2021 11:11 pm chippy Hi Simon. The puddle flange is the interface or joining method between the waterproofing and the drain. You always need it. Technically if you could waterproof all the way into the drain pipe you wouldn't need the puddle flange but in practice that is impossible to achieve without leaving small openings that water will get into. The drain pipe will also move at a different rate to the drain pipe so will crack the waterproofing. The puddle flange gives a large surface area for the waterproofing to interface with the drain and also allows for the new shower grate to sit in such a way that any water that gets to the waterproofing can still escape down the drain. Just jumping on to this thread please as we are currently renovating our ensuite. The builder put a puddle flange in the shower but NOT in the floor waste or toilet drain. My husband is adamant it is required in both due to the movement of the pipe as Chippy mentioned. They have tiled over the screed (waterproof was done on top of screed) already and now the pipe sits 60mm below the top of the screed, then the tiles on top and no flange - they are wanting to put just the metal drain insert and tile piece and polyglot in. This will leave a void below wherethe flange enough have attached the two - should I get them to rip up the tile and insist the flange be installed? Will this ruin the integrity of the waterproofing?? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Hi Geoff Install Puddle Flange prior to any screed. Puddle flange needs to be flush with the surface so you may need to grind away the surface to achieve this. Also as… 2 8371 I had new concrete laid, extended the alfresco and had the sidewalks concreted too. I noticed the concreter didn't put the expansion foam anywhere, there are expansion… 0 8130 |