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Waterproofing

Your home waterproofing starts with the pouring of the strip footings, traditionally no waterproofing is required however a waterproofing admixture can be added to the concrete to make these footings impervious to moisture.

WaterproofingThe concrete slab is then poured onto a waterproof membrane as can be seen on the diagram supplied by aibs.businesscatalyst.com as an acceptable method based on the Building Code of Australia.

The membrane on the edge of the slab is held in place by the stepped flashing, this method ensures that the concrete slab is protected from moisture in the soil.  

Weep holes in the vertical mortar joints of the external brick course marked with an X allows for any water that gets into the cavity to run onto the flashing and drain out. The weep holes also allow air movement and this helps to keep the cavity dry.


Waterproofing Concrete FootingsAny below ground walls, planter boxes and retaining walls will need to have a membrane layer applied to the external surface to stop moisture from penetrating to the other side. The area most prone to failure is the first course of brickwork onto the footings, advisable to have a reinforcing bandage applied along the whole length of the walls to cover this cold joint.

Then depending on the quality of the backfill that is going to be used to bring the soil level back up to ground level, further protection in the form of thick black plastic sheeting to rubber sheeting may be required to protect the membrane layer from building and other rubble from piercing through this membrane layer.

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For more information on home waterproofing, Building Codes, or our products including Admixture and Flexible Waterproofing Membranes please Contact Us.      

Waterproofing Wet Areas

The wet areas of your home require special attention when it comes to waterproofing, any short cuts will result in expensive repairs later on.

The minimum requirements are set out in The Australian Standard - AS 3740—2004. Waterproofing of wet areas within residential buildings.

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Waterproofing Wet Areas
Shower Waterproofing

Waterproofing External Walls

Wall Waterproofing

The external walls of your home are also worth waterproofing to stop moisture from penetrating into the walls from above ground level by rain and sprinklers or from below ground level moisture.

The moisture that gets into the walls will then migrate to the warmest surface of the wall, normally the external face but in the case of a cavity wall can also migrate to the cavity wall surface.

As this moisture migrates to the surface it brings soluble salts to the surface that first appears as fluffy efflorescence that can just be brushed off the surface of masonry surfaces.

The efflorescence just below the surface slowly form salt crystals, as these little salt crystals grow they break up the surface of the masonry and or mortar and can be seen below the affected area as loose sand and masonry particles.

On painted walls, the efflorescence forms in between the masonry surface and the paint or coating and results in the paint or coating bubbling. When these bubbling areas are brushed or scraped they reveal the efflorescence salts that have formed and caused the deterioration. 

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Wall Waterproofing
Sealing Rendered Walls
Balcony Waterproofing
Wall Waterproofing Solution

Waterproofing Internal Walls

Home Waterproofing Products and Information


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