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Surprised they cut the angle considering rest of bathroom isn’t falling. Would have pushed to stop the floor heating before shower. Really liked the double puddle flange and thanks for the video’s

You've put a lot of thought into that puddleflange set up David, too no avail I think. You can't seal that top flange from the bottom so a strong flush of water will rise back up into the screed and more a less flood the under screed before re draining as its a flat floor. We all know the negastatic effects of moisture on the underside of a membrane and that's why my opinion is its a waste of time with the under and over system. But that's only my opinion, cheers they are great video's though !

4:15 I don't think the NCC or AS has provision for sandwiching the screed between waterproofing. I hope you use a moisture meter before applying the upper coat after the shower screed is completed. Otherwise looking great David and terrific progress 👍

That detail work is as ruff as guts

The transition is obious and not comparable materials used between water based membrane used on wall over poly up turn see 5.06

Hi David, I assumed as much, particularly with your involvement. Personally I'm not a fan of the polyurethane, due to compatibility issues from tile glue manufacturers. Also l probably would have gone a sheet membrane system on the floor and used joint band system on all wall and floor junctions including collars and penetrations

Has compatibility of materials and manufacturers warranty with these different products utilised in the membrane been considered?

No primer behind the toilet. Let's hope they don't have male kids. Why not use plaster external angles and plaster those recessed shelves fully before fully waterproofing it.

Coming along very quickly! There’s also no need to set the internal corners with base coat on the villaboard (according to James Hardie manual) if you’re going to do floor to ceiling tiles. They can just be left with the 6mm expansion gap, and that gap filled with a compatible gap filler.

Do these tradespeople know what your an expert in ??

It will help if you move the puddle flange at least 250mm or more away from the wall for better waterproofing better screed falls etc

thank you for your content

Putting that new timber against that old rotten timber is a big mistake, and would have taken literally half an hour to remove. I have seen multiple times over the years the new timber rotting because of the fungus in the old rotten timber . Your old timber had either dry rot or wet rot both are a fungus and will transfer to the new timber if not removed.

I did a video on waterproofing following AS3740 for my potential customers.. Would really appreciate if you can watch it if I did anything wrong any how can I improve it

Hey.. I’m doing the exact type of work every day. Nice to see someone have great understanding about waterproofing doing it. Will watch the whole series

Awesome video thanks mate!!!!Below screed membrane with a sleeved floor drain to bypass the screed.... Works for us :)

If seen worse then that. It's held up really well. No damage to the Oregon studs. That plastic "flashing" I've seen used at the base of timber windows in the hope that any water that gets there doesn't rot the stud frames. Without seeing exactly where it was during the demo, my guess is it was used in a similar manner to prevent stud rot at the height of the bath frame.

Great job David, really helpful information.

All very well but no one inspects the water proofing and ones the tiles are down the inspector cannot see underneath the tiles and gives a certificate of compliance without no way of knowing.Bodgy inspectors don’t even have ladders to get in the roof!

JP working the probe

Have to stop the water at the outside. Water seeping through will eventually damage the concrete to the point of failure.

So for a 4m by 4 m bathroom you need 40mm of fall to a drain?

So I guess this solves the before or after screed argument

We don't screed bathrooms in Victoria so it's irrelevant

Thanks this was great. Appreciate putting this video up.

Silicone, even if there was a stub out, youde still need to use silicone... Not sure what the problem is?

Bout a tube and a half of silicone lol

🎯 Key points for quick navigation: 00:00 *🚧 Big changes are coming in NCC 2025, especially in waterproofing and water shedding; guide provided for submitting comments.* 00:15 *📝 Public comments must be submitted through the consultation Hub; submissions should focus on proposed changes.* 00:28 *🌐 Access the Consultation Hub via consultation.abcb.gov.au for the National Construction Code 2025 draft.* 00:58 *💧 One major change involves improving waterproofing and water shedding provisions.* 01:13 *📄 Download the standard response form, a Word document to fill out with comments.* 01:26 *🧩 Response should include technical issues, content simplification, editorial corrections, and support for proposed changes.* 01:54 *✅ Indicate the relevant volume, nominate clause/figure/table, provide recommended changes, and justify them.* 02:35 *📌 Multiple responses can be included in one document; ensure clarity before submission.* 03:04 *🚀 Begin the submission process on the website by clicking the appropriate link.* 03:32 *🖋️ Provide your name, email, and organisation details during submission.* 03:47 *⬆️ Upload the completed response template; add additional files if needed.* 04:13 *🔄 Review and submit your response; receive a response ID via email.* 04:44 *🎉 Congratulations for submitting your comments and contributing to the NCC 2025 draft discussion.*

Great session! thanks for sharing

great record

Now, how to achieve minimum 200mm slab for fire rating, without having a ridge 1:80 (12.5mm per meter) higher than the empire state building ?

Goodbye screeds indeed. 70mm stepdown, about time. Structural falls 1:80-concreters will hate this. I just hope that those responsible for the soon to be revised AS4564 are on the same page.

Great case study presentation highlighting the value of selecting the correct waterproofing system.Thanks for sharing David.

Thanks David. Self Compacting Concrete (SCC) use is important because; it eliminates the need for vibrator use ( which is the cause of majority problems associated with concrete placement) and the supplied concrete quality cannot be compromised ( ie adding water in the site, correct aggregate use and correct slump/spread). Air Voids can be avoided by using SCC which is important for durability, structural, fire and acoustic compliance. AIR VOIDS ARE ALSO THE BIGGEST OBSTACLE TO ACHIEVE WATERPROOF WALLS WITHOUT SCC. I recommend all to read Concrete Inst. of Australia article; volume 50, issue 1, page 47 which states "Cracks in some concretes containing certain permeability-reducing admixtures were found to heal at widths of up to 0.3 mm" How can we ensure that crack widths cannot exceed 0.3 mm (some argue 0.5mm). AIR VOIDS ARE MUCH BIGGER THAN 0.3 or 0.5mm cracks under any circumstances. Therefore the question is begged to be answered; how is it possible to offer waterproofing warranty with just admixtures on concrete walls without bonded membrane wall protection, without SCC and without providing an Air Void Free Warranty.

More great content, Dincel improving their system with great design, innovation and testing, thanks for sharing David

Excellent presentation, thanks for sharing this valuable information.

Thanks for continuing to share these videos. They’ve been such a massive help for us. There is such a shortage once you go beyond the standards and product specs.

Great video! Keep up the good work.

Great presentation and demonstration of a sheet membrane system that looks very promising. Thanks for sharing.

I think its always better if the licensed waterproofer is also licensed tiler so you wouldnt have this conflict of interest where the Tiler is riping up those membrane off just so he could get his tile installed the way he wanted it. We were lucky to have some renovation at our place and the tiler and the wateproofer is the same guy. Btw great presentation and very informative

Actually, the NCC specifies compliance with the HPS AND AS3740...

Once again great presentation and content, thanks for sharing

Great presentation very informative thank you for sharing.