Waterproofing and Membranes

A watertight structure is essential to protect the assets inside – but also to protect the structure itself. Water ingress through a roof or wall can cause untold damage to machinery, stock, parked cars, office fitouts and other items that a building is supposed to protect. The same water ingress can also start corrosion in the concrete or steel structure, until the building itself is compromised.

Australasian Specialty Coatings uses a range of materials for waterproofing steel and concrete surfaces.

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Liquid Applied Membranes

Liquid Applied Membranes are seamless coatings for waterproofing and tanking applications. The liquid material is spread evenly over the surface where it hardens to a flexible or semi-flexible continuous membrane layer.

The benefit of liquid applied membranes is the continuity of the material, with no breaks or weak points, covering all the contours of the surface below.

Liquid applied membranes can be hand applied or sprayed. The flexible or semi-flexible nature means substrates with movement remain protected as they expand and contract.

These materials are often used for:

  • Concrete rooftops
  • Rooftops with poor drainage
  • Balcony areas
  • Car park decks
  • Under other floor finishes

Synthetic Roof Membranes

Sheet applied, multi-layer synthetic roof membranes are at the very forefront of waterproofing. The rolls of tough synthetic waterproof fabric are bonded to the substrate and welded together by pre-programmed robot or manually.

These waterproof membranes have long guarantees (15 years plus) and can be specified with reflective properties that assist in keeping the building cooler in summer and warmer in winter.

Synthetic membranes form a seal over the complete roof and can be made tough enough to plant a garden bed on top. In many cases these systems can be applied over existing waterproofing coatings or bitumen sheets, making for considerable savings compared to coating systems.

Acid Resistant Membranes

Acid resistant membranes are used in areas that require and spills or leaks to be contained, such as bunded areas where chemicals are stored. The bund is there to catch spills, leaks, and to guard against the possibility of the container failing.

Depending on the type of chemical the substrate is being protected from there are a range of membranes specifically designed to contain any accidents and prevent chemical loss. These membranes can be hand applied or sprayed depending on the level of protection required.