QUEENDLAND Standards for Waterproofing Bathrooms:
waterproofing the full floor within the shower recess
the hob or step down in the bathroom floor to be waterproofed
Floor to walls need to be waterproofed to to BCA AS3740:2004 standard & extent
APPLICATOR MUST HAVE COMPLIANT QBCC LICENSE.
Up the walls in the shower need to be waterproofed up to at least 1800mm high minimum and joints in wall junction each side (minimum) or entire shower wall to finished glass
the entire bathroom floor needs to be waterproofed above the ground floor of the house
however Concrete Slab on ground only Walls with Downturn onto concrete (Minimum). Or entire floor optional consult professional for the right advice.
Minimum Requirements are not always recommended each house differs and is strongly Advised you consult a professional for the right JOB.
In QLD it is required that all work be done by a Licensed contractor and to be signed off with a form 16.
Application of Waterproofing:
Not limited to:
AS 3740:2004 & AS/NZS4858:2004 Waterproofing of wet areas
AS 3600 and AS 2870 Concrete
AS 3700 Masonry
AS 2908.2 Fibre Cement Sheet
AS 3958.1 Tiling
AS 2334 and AS 3566.1 Fastenings
PROCESS OF WATERPROOFING
Bathrooms need to be waterproofed correctly by a certified licensed contractor as part of the requirements outlined by QUEENSLAND legislation. If not the risk of structural damage resulting from dampness, water leaks, or condensation can be a major problem leading to very expensive Damage sometimes Structural.
Before beginning the process of Waterproofing it is very important that all the surfaces are correctly prepared and primed with correct primer for the surface. Drains in the floor should be recessed for greater fall Ensure that the surfaces are clean, dry and free of any foreign objects e.g ,steel, silicone,can be a problem for waterproofing membranes. It is recommended you follow manufacturers guidelines and application methods to comply with the exact Australian standard and extent. Then the process is usually a Primer then a Two coat system which requires one coat at a time with the recommended amount of drying time between coats. With the top coat that is a finished product or trafficable it is recommended to apply in a different direction to the first for example, if the first coat was put on vertically, the second should be horizontal. Waterproofing is finished when dry to manufacturers specifications.