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  1. Replies
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    Sadly there are no current licensing requirements...

    Sadly there are no current licensing requirements in Victoria - not until about 2022 when the new laws become fully implemented. I'd still use a proper waterproofer though.
  2. Absolute @@@@@@@@. I'd contact Ardex and ask...

    Absolute @@@@@@@@.

    I'd contact Ardex and ask technical people if the WPM300 is suitable for the above application (hint - it's not). Get it in writing from Ardex and then you've got the...
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    Methylene diphenyl diisocyanate (MDI) is the...

    Methylene diphenyl diisocyanate (MDI) is the least hazardous of the commonly available isocyanates, but is not benign.[11] Its very low vapour pressure reduces its hazards during handling compared...
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    Crystal sealer is good - just not for sealing...

    Crystal sealer is good - just not for sealing joints in concrete, which is the problem you have. Either way, you need to get rid of the bitumen first.
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    The bad news is that while that bitumen is there,...

    The bad news is that while that bitumen is there, you won't be able to get anything else to bond to it from a negative tanking perspective...

    If you can completely remove the bitumen, I would try...
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    They may work, but as we don't sell Dunlop...

    They may work, but as we don't sell Dunlop products, it's hard for me to be 100% certain as we've never tested them together.
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    Hi Ren, I wouldn't mix the two products as...

    Hi Ren,

    I wouldn't mix the two products as there's literally no way to know if the two products will work together. Just choose one and then follow the instructions to the letter on their...
  8. There are some good quality negative tanking...

    There are some good quality negative tanking membranes available which will work great unless the wall cracks. Try either Drizoro Maxseal Flex or Gripset C-1P.

    Best of luck
  9. You're probably best to speak to a sandblaster to...

    You're probably best to speak to a sandblaster to be certain, but I don't see why not in general unless the wall is in absolutely terrible condition.
  10. Unfortunately, the only sure fire way to remove...

    Unfortunately, the only sure fire way to remove bitumen from brickwork is sandblasting.
  11. Hi Chony, There are quite a number of products...

    Hi Chony,

    There are quite a number of products that you can use to "negatively" waterproof the inside of your garage wall. The problem is that by "tarring" it (probably bitumen?) you've actually...
  12. Hi debunk, What you should look out for is the...

    Hi debunk,

    What you should look out for is the waterproofing membrane should be tested by CSIRO (or similar) to be AS4858 compliant. A class III membrane (over 300% elasticity) would be ideal for...
  13. Yes, you essentially draw a line straight down...

    Yes, you essentially draw a line straight down from where the shower head comes out of your wall, then draw a line 1500mm from that point - that's the minimum you should be waterproofing outside the...
  14. If it's something like chipboard + tile underlay,...

    If it's something like chipboard + tile underlay, then the entirety of the new "bathroom" floor needs to be waterproofed as well as the insides of the shower area.

    If it's a water resistant...
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    Good news then :)

    Good news then :)
  16. Replies
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    Well that explains the bitumen type of...

    Well that explains the bitumen type of discolouration. Still looks a little on the thin side in some spots though.
  17. Replies
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    Ok, it's difficult to be 100% certain without all...

    Ok, it's difficult to be 100% certain without all the facts, however, a few things to consider.

    1. I've never come across a hybrid polymer modified PU sealant (MS or SMX polymer) which doesn't...
  18. Replies
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    Which membrane did you use?

    Which membrane did you use?
  19. Hi mate, A lot depends on what the...

    Hi mate,

    A lot depends on what the manufacturers instructions say regarding the topic. If you can identify which waterproofing membrane you are using, it should be fairly straight forward to...
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    Those are interesting questions. 1. The...

    Those are interesting questions.

    1. The problem you have is that you cannot obtain an occupancy certificate until such time as all wet areas are waterproofed. Since the verandah won't be changed...
  21. Ok guys, after consulting with the tech experts...

    Ok guys, after consulting with the tech experts at Gripset and several existing customers - this is an ongoing issue with most composite materials. The issue is that the composite materials such as...
  22. Hi Bearmatt, It is possible you may have a...

    Hi Bearmatt,

    It is possible you may have a sub-standard quality batch Villaboard. What appears to be happening is the top layer of the villaboard is completely delaminating from the layer below...
  23. Without closer examination, it also appears as if...

    Without closer examination, it also appears as if the waterproofing stops dead at the smart tile as opposed to terminating onto the leak control flange. End result is if water ends up on the...
  24. Hi rebuildr86 - the products inside the bucket...

    Hi rebuildr86 - the products inside the bucket are identical. Gripset Betta is the "retail" range of the Gripset "trade" brand.

    You can take a look at www.gripsetbetta.com for all their...
  25. If you're following the manufacturers...

    If you're following the manufacturers instructions, then priming prior to using Gripset membranes is 100% required.

    The only thing that may vary is the type of primer used. On porous substrates...
  26. Replies
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    Hi Kenigma, Generally they need to be thick...

    Hi Kenigma,

    Generally they need to be thick enough to allow for a 1:100 fall. A standard screed mix (3:1 sand:cement) needs to be at least about 35mm thick to avoid crumbling. You can add...
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    Beyond the structural aspects of what you're...

    Beyond the structural aspects of what you're trying to do - which may put too much weight on the structure - you've got a second issue. There is no real way of building up the height on that deck...
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    Hi DBR, Have you ever seen any evidence of...

    Hi DBR,

    Have you ever seen any evidence of water ingress prior to these works inside the garage through the bricks or the joint between the bottom course and the concrete? Water ingress may...
  29. Hi world2160, It will work fine as long as you...

    Hi world2160,

    It will work fine as long as you use quality construction materials, coupled with a good builder and an expert waterproofer who is using good quality waterproofing materials.

    The...
  30. Replies
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    You have to be careful with that. Most...

    You have to be careful with that. Most waterproofing membranes have a curing time specified by the manufacturer - not many of them recommend topping on them within 24 hours. If you want to do that,...
  31. Replies
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    Alternately, you can waterproof to above the...

    Alternately, you can waterproof to above the height of where the soil level is going to be with something like Gripset 51. Just make sure to let it cure, then put a protective layer of coreflute...
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    The screed needs to be fully cured. Screeds take...

    The screed needs to be fully cured. Screeds take up to 1 day per 1mm of screed thickness to cure as per Australian Standards.

    Alternately, you can use a polymer modified screed such as RLA Rapid...
  33. Hi Billy22Bob, Gripset 38 types of membrane...

    Hi Billy22Bob,

    Gripset 38 types of membrane (SBR based) shouldn't be left in the sun for longer than a 2-3 weeks prior to tiling. If you have done this, then you'll need to prime with the Gripset...
  34. Hi Billy22Bob, In order... 1: Sounds like...

    Hi Billy22Bob,

    In order...

    1: Sounds like the 11FC wasn't fully cured when the 38 was applied over the top. I'd recommend using a Hybrid Polymer (SMX) type of caulk in future. Alternately,...
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    Great to hear, hopefully that will alleviate your...

    Great to hear, hopefully that will alleviate your issues!
  36. Replies
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    It's a excellent idea if you can do it without...

    It's a excellent idea if you can do it without damaging the waterproof membrane.
  37. Replies
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    Hi Jack620, Ok, I'm editing my original post...

    Hi Jack620,

    Ok, I'm editing my original post because I didn't look at pictures properly.

    Seems the most likely explanation is the leak control flange has been blocked by the tile adhesive and...
  38. Hi Frank2000, The waterproofing generally...

    Hi Frank2000,

    The waterproofing generally isn't taken into the waste pipe, but terminates on the leak control flange. Sometimes people get over-zealous when waterproofing, however, in my...
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    If you do have a floor waste in the toilet room,...

    If you do have a floor waste in the toilet room, then you do need to waterproof. Make sure that there's a leak control flange installed if that is the case.
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    Depends on how many times you expect your toilet...

    Depends on how many times you expect your toilet to leak and/or flood. Personally I wouldn't bother.
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