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Convert laundry to shower and waterproofing issue

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  1. #1
    Mr Hadnut-Dade
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    May 2010
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    Sydney
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    Default Convert laundry to shower and waterproofing issue

    Hi. We are converting the downstairs laundry to a room that will have a shower and basin. There's no waterproofing in the existing laundry.

    When we start demolition and constructing the new shower, do the entire walls and all the floor of the entire room need to be waterproofed. OR... is it just the 2 walls adjacent to the shower and the shower floor (ie extent of shower glass) that needs to be water proofed.

    FYI. The existing laundry has entire room with tiled floors. We want to keep the majority of the existing tiles and rip up only under the proposed shower and waterproof that small location-dont know if that's permitted or not.

    Thanks for your help.

  2. #2
    Member wspivak's Avatar
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    Mar 2014
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    Oakleigh, VIC
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    83

    Default

    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 substrate such as concrete, you'd need to waterproof a minimum of 1500mm from the location of the shower head.

    Hope that helps.
    The WaterStop Shop
    waterproofing supply professionals
    Oakleigh, VIC

  3. #3
    Mr Hadnut-Dade
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    May 2010
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    Sydney
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    Default

    Thanks. It concrete floor and villaboard walls. Do you mean 1500mm sideways of the head? Even though the shower is a rectangular 900mm x 1100mm?

  4. #4
    Member wspivak's Avatar
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    Mar 2014
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    Oakleigh, VIC
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    Default

    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 shower. So in your case, say the shower head was 450mm from the edge, you'd be waterproofing 1050mm outside the shower.

    Hope that makes sense...
    The WaterStop Shop
    waterproofing supply professionals
    Oakleigh, VIC

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