Changes to Standards | Surface Falls

In this week's episode of SealedForGood we continue our look at the latest AS3740 wet area standard and we'll be focusing on surface falls as it represents one of the more notable changes and a rethink of the waterproofing design and installation 🎥⁠
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0:00 In this Episode
1:03 AS3740 Appendix B
1:58 Requirements for Fall
2:30 Changes From Previous Standard
3:40 Ungraded Surface Risks
4:01 Relationship Between Membranes & Falls
5:04 Amendments to Installation
5:46 Considerations for Builders & Architects
7:27 GAPP Training Testimonials
The views and opinions contained in this presentation are informative only, and does not constitute professional advice.
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- Australia, S., 2021. Waterproofing of domestic wet areas. [pdf] Australia: Australian Standards, (www.standards.org.au/) [5 July 2023].
- (Standards, 2021, Appendix B).
- (Standards, 2021, 2.3 Requirements for Fall).

[@andreaksenov8397]

Thanks for the video it was very well well done. I think the new 3740 is going to assist with things being sealed for good, i get that some may opt for no voluntary waste with the associated costs but those costs are no worries for the serious builders, the high end. I think the more serious wont have a issue with fall to waste wherever theres a chance for water to encroach for whatever reason and membrane to 1500 from the shower if its not fully enclosed and why not the whole floor, in any case get the water stops in, all that, and if your enclosed its fully enclosed as required and in any case if water is around after 5 hours in normal conditions its deemed pooling, even with a enclosed shower water can get out from containment but at least make it unlikely if you have that situation you can have a flat floor and no waste just be able to address the 5 hour rule and your right under normal conditions. I got lots from this, great video Gripset as usual.

[@GripsetIndustriesPTYLtd]

Hi Andre!
Really thanks for your contribution! Great points keep them coming! Have you registered for next months webinar? lnkd.in/gdD8FMMX
Let us know what other topics you would like covered. Also stay tuned we still have a few more AS3740 update episodes on there way.
Sincerely appreciate your support!

[@andreaksenov8397]

@@GripsetIndustriesPTYLtd Yes I have registered for sure, was really easy, totally easy. Cant wait for it 19th July 5pm. Quality Control and Industry Update, what you need to know. Thats really exciting. I just wish to be able to take detailed notes, part 1 was very impressive great content.

[@Adrian-pi4zu]

Builder i do work for their wetsealer does not recess puddle flanges anywhere. Trying to achieve fall to a smart waste is very difficult. Is there anything in the national code that states puddle flanges must be recessed on the 2nd story bathroom floors

[@GripsetIndustriesPTYLtd]

Hi Adrian, the current AS 3740 2021 wet area standard under section 4.3.1 requires leak control flanges to be recessed level or below the substrate. Under Part 10.2 of the ACBC Housing provisions states that membrane drainage connections in concrete floors, flanges can be cast in or set into the top surface of the slab/tile bed, and for all other floors, the flange may be set into the substrate or the tile bed. Both imply the flange is set into the substrate, not on top. I hope this helps and thanks for watching! :)