Bathtub rim not checked into the vertical wall, not recommended as this may cause moisture to migrate through either the rendered walls or the stud timber frame behind the villa board.


Its recommended that the bathtub rim is to be in the vertical walls by a min of 20mm.

Window in the shower recess Not Recommended, as moisture may migrate throughout the wall cavity and may cause damage to the structure and could have health issues, example Mildew,and dampness

Hot Tips

Figure 1. Re: Bathtub Rim Positioning

Figure 2. Re: Window Shower Recess

Figure 3. Re: Preparations Prior To AAA Australian Waterproofing PVC Membrane in Wet Areas

A short video that shows the correct preparation of wet areas prior to AAA Waterproofing PVC membrane being applied. 

Figure 4. Re: An example of incorrect materials used on balcony construction.  

This photo depicts Ply wood used as flooring on a balcony construction. This is Not Recommended.

Figure 4.1 continued   

The damage its caused by not complying with BCA and Australian Standards, Timber rotting away. 

Figure 4.2 continued   

The end result using proper construction techniques then waterproofed with AAA Australian Waterproofing PVC system.

Figure 4.3 continued   

An example of a great finish; ready for tiling. 

Figure 5. In Relation To PVC Corner Cone 

Figure 6. In Relation to Rear View Of PVC Membrane

This image shows the PVC corner cone installed correctly to ensure flexibility as this is where the pressure movement of structure is high.

This image shows a rear view of where the PVC

membrane is installed. In this case onto a steel structure or timber structure. Our AAA Australian Waterproofing method we use the roof flashing principle. 

Figure 7. Re: Flexible Membrane Installation Application

Figure 7.1 The End Result 

AAA Australian Waterproofing Technology & Solutions enjoys communicating with other trades, thus taking the pressure off the Owner/Builder. Here is an example of the method we use to ensure complete waterproof result when the post of the Balustrade is installed after waterproofing. 


In this scenario we then install a flexible PVC boot and welded down to the main balcony membrane area thus eliminating any moisture entering the house. 

Figure 8. In Relation to High Risk area whereby 

Spigot Pierces PVC Membrane after Installation.

Figure 8.1 Solution.

This is another example on how to waterproof in a high risk area whereby; in this example a Spigot has pierced through a PVC membrane after the membrane had been installed. 

Notice the PVC tape which has been installed around the Spigot and onto the main PVC membrane. In this scenario the PVC welds itself

to the Spigot for a perfect seal.  

Figure 9. Close up of a step-down into the bathroom

The proper way of preparing for waterproofing is to construct a stepdown into all wet areas by 60mm or more. Its recommended of this method.

Figure 9.1 Wide shot of the bathroom

A wide shot of the bathroom floor. This method is best for all wet areas to help waterproofing to achieve it’s goal and be as successful as possible to eliminate any dangers of moisture escaping the bathroom. This also helps tilers to tile level to the outside area.

Figure 10. Niche Soap Box 

The proper way to construct a niche (Soap box) with backing and sealed by the builder, then the waterproofing can be applied or installed with the AAA Australian Waterproofing PVC system to its AAA Australian Waterproofing Specifications using Best Practices


Figure 10.1 Niche Soap Box 

Figure 11.  Frame Tips

The importance of flashing across the door or window frame on a balcony, and a planter box should it be outside your window and the window frame has been installed low


Figure 12.  The Importance of a Fall away from a Building  

This 2017 balcony 

without fall from the substrate. 

The only fall this balcony has is through sand and cement tiling which is not recommended.


This 2008 balcony with fall.


This balcony has got a fall from the substrate at a ratio 1:100