The transition is obious and not comparable materials used between water based membrane used on wall over poly up turn see 5.06
@terryferuglio58962 күн бұрын
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
@terryferuglio58962 күн бұрын
Has compatibility of materials and manufacturers warranty with these different products utilised in the membrane been considered?
@DavidPrevite-WaterproofExpert2 күн бұрын
hi terry, important consideration. yes all products supplied by one manufactuer in this instance. in Sydney it is common for materials supliers to suport using a polyurethane and acrylic product together like this so long as they are from their range and have tested their compatiblity prior
@robertdilorenzo12452 күн бұрын
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.
@DavidPrevite-WaterproofExpert2 күн бұрын
waterproofing isnt a requirment behind the toilet but very fair point about male kids
@itsandrewwise3 күн бұрын
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.
@DavidPrevite-WaterproofExpert2 күн бұрын
thanks andrew, yeh the plan is for floor to ceiling tiles on all walls
@jarrededwards78544 күн бұрын
Do these tradespeople know what your an expert in ??
@DavidPrevite-WaterproofExpert4 күн бұрын
yeh discussed with them on day 1. i want the series to showcase high quality outcomes but there si always a few things that slip through
@MarioCvetanovski9 күн бұрын
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
@DavidPrevite-WaterproofExpert8 күн бұрын
the intention here is to have the strip drain relatively close to the wall. we will see how it goes
@Building-timelapsebuilding10 күн бұрын
thank you for your content
@DavidPrevite-WaterproofExpert2 күн бұрын
My pleasure!
@Builder913313 күн бұрын
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.
@yiorgosn68373 күн бұрын
Separating with plastic sheet strips would have been satisfactory.
@2ndGenerationBathroom14 күн бұрын
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
@DavidPrevite-WaterproofExpert2 күн бұрын
ill check it out
@2ndGenerationBathroom14 күн бұрын
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
@chrisharlie750214 күн бұрын
Awesome video thanks mate!!!!Below screed membrane with a sleeved floor drain to bypass the screed.... Works for us :)
@robertdilorenzo124515 күн бұрын
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.
@DavidPrevite-WaterproofExpert15 күн бұрын
Thanks for insight @robertdilorenzo1245, i think you are definitely correct on this as it lined up exactly with the edge of the bath lip connect to the stud frame. cheap and effective
@paulshelley351215 күн бұрын
Great job David, really helpful information.
@DavidPrevite-WaterproofExpert15 күн бұрын
Glad you enjoyed it Paul
@josephstratti5218 күн бұрын
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!
@BepoppАй бұрын
JP working the probe
@hotpuppy1Ай бұрын
Have to stop the water at the outside. Water seeping through will eventually damage the concrete to the point of failure.
@DavidPrevite-WaterproofExpertАй бұрын
yeh thinking that reo is already oxidising which can cause the shotcrete to spall and crumble
@JeremyBenda-b9eАй бұрын
So for a 4m by 4 m bathroom you need 40mm of fall to a drain?
@DavidPrevite-WaterproofExpertАй бұрын
@JeremyBenda-b9e it would be 45mm at a 1:80 gradient
@ojwillaАй бұрын
So I guess this solves the before or after screed argument
@DavidPrevite-WaterproofExpertАй бұрын
@ojwilla it certainly does (for external areas) unless you are considering a performance based design
@peterevans1371Ай бұрын
We don't screed bathrooms in Victoria so it's irrelevant
@DavidPrevite-WaterproofExpertАй бұрын
@peterevans1371 im in Sydney but i find that very hard to believe
@peterevans1371Ай бұрын
@@DavidPrevite-WaterproofExpert we only screed shower bases
@DavidPrevite-WaterproofExpertАй бұрын
@@peterevans1371 how to you get falls outside the shower area? in general bathroom
@roland60282 ай бұрын
Thanks this was great. Appreciate putting this video up.
@DavidPrevite-WaterproofExpertАй бұрын
Glad you enjoyed it!
@justinh51252 ай бұрын
Silicone, even if there was a stub out, youde still need to use silicone... Not sure what the problem is?
@DavidPrevite-WaterproofExpert2 ай бұрын
hard to get a suitable seal onto the plumbing body when it it flush or recessed into the wall sheeting like that, Compared to the top bodies that extend out past the wall sheeting
@BHandy0002 ай бұрын
Bout a tube and a half of silicone lol
@DavidPrevite-WaterproofExpert3 ай бұрын
🎯 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.*
@ianycw823 ай бұрын
Great session! thanks for sharing
@DavidPrevite-WaterproofExpert2 ай бұрын
Glad you enjoyed it!
@wade63834 ай бұрын
great record
@DavidPrevite-WaterproofExpertАй бұрын
great to hear you enjoyed it.
@josesuarez57164 ай бұрын
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 ?
@DavidPrevite-WaterproofExpert4 ай бұрын
time to buy up concrete because when this comes in we are going to need alot more of it to get these projects built
@GolkurKiselАй бұрын
Could you expand on this please? I´m not sure I´m following? Much appreciated!
@madirishchef4 ай бұрын
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.
@DavidPrevite-WaterproofExpert4 ай бұрын
i think it is going to take some time to get alignment on such substantial changes. blacklisting screeds is a big pill to swallow
@Woodbutcher004 ай бұрын
Great case study presentation highlighting the value of selecting the correct waterproofing system.Thanks for sharing David.
@burakdincel30404 ай бұрын
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.
@Woodbutcher004 ай бұрын
More great content, Dincel improving their system with great design, innovation and testing, thanks for sharing David
@DavidPrevite-WaterproofExpert4 ай бұрын
thanks Gary, i always appreciate the feedback
@Woodbutcher004 ай бұрын
Excellent presentation, thanks for sharing this valuable information.
@DavidPrevite-WaterproofExpert4 ай бұрын
happy to hear you found it useful @garymclean1513
@dallasdouglas73615 ай бұрын
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.
@DavidPrevite-WaterproofExpert4 ай бұрын
thanks @dallasdouglas7361 ill be sure to keep the content coming
@dallasdouglas73615 ай бұрын
Great video! Keep up the good work.
@DavidPrevite-WaterproofExpert5 ай бұрын
Thanks @dallasdouglas7361
@Woodbutcher005 ай бұрын
Great presentation and demonstration of a sheet membrane system that looks very promising. Thanks for sharing.
@DavidPrevite-WaterproofExpert5 ай бұрын
Thanks for the feedback @garymclean1513
@rio20d6 ай бұрын
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
@DavidPrevite-WaterproofExpert6 ай бұрын
Good point. Ive never seen a tiler willing damage their own work when they are providing the installation warranty for the work.
@ramzi06may326 ай бұрын
An excellent presentation that answers many questions. Thanks David!
@thatoldchevy0016 ай бұрын
Actually, the NCC specifies compliance with the HPS AND AS3740...
@DavidPrevite-WaterproofExpert6 ай бұрын
You are very correct, i forget to mention as i spend most of my time in the Class 2-9 space
@DavidPrevite-WaterproofExpertАй бұрын
But the NCC does overrule AS3740 when they conflict, such as with falls
@Woodbutcher006 ай бұрын
Once again great presentation and content, thanks for sharing
@Woodbutcher006 ай бұрын
Great presentation very informative thank you for sharing.
@DavidPrevite-WaterproofExpert6 ай бұрын
thanks Gary, aiming to do more in the near future
@LennyandVansWorld6 ай бұрын
A great presentation. Just curious regarding considering AS3740.2021 clause 2.3.1 where installing a floor waste, the membrane is shall to be installed to a ‘substrate’ with a minimum fall (NCC overrides with 1:50max/1:80min). Under 3740.2021 substrate is defined as ‘surface to which the membrane is applied’. I may have missed any discussion on this in the presentation but generally speaking and in particular for 2 storey dwellings I would think this would require the membrane be installed on top of the screed (substrate) in many instances. Where a falls to floor wastes are required, waterproofing over the screed wouldn’t be doable under a lot of circumstances subject to AS3740.2021, so I would think Part 10.2 of the Housing Provisions would have to be the most practical choice if intending to waterproof under the screed. I.e AS3740.2021 wouldn’t be a chosen pathway commonly for this reason. Do you know if there are any other considerations to this when choosing which is best, under or over screed? Cheers
@LennyandVansWorld6 ай бұрын
A couple of typos above but the main point is waterproofing under a screed wouldn’t be able to be done subject to AS3740.2021 in a lot of circumstances where falls are required due to the clause and definition of substrate. Therefore surely the overwhelming majority are opting for the Housing Provisions pathway where a membrane doesn’t have to be installed to a substrate that’s has falls (under screed) but not sure if there is other considerations around this?
@DavidPrevite-WaterproofExpert6 ай бұрын
i believe housing provisions has its own pitfalls such as requiring a 25mm step down into the shower area which is also undesirable.