Basement Waterproofing Melbourne

October 04, 2017

Basement Tanking

Below ground tanking, retaining walls, foundations and basements require best practice waterproofing techniques – the consequences of membrane failure are costly & difficult to rectify.

  • A correctly installed below ground tanking will permanently stop water ingress into below ground structures.
  • Below ground leaks are expensive to rectify and also an extremely challenging job to remedy on the negative side.
  • For commercial buildings, water leaks can ruin expensive equipment and disrupt business and finishes and furnishings damaged in the case of residential buildings.
  • This adds up to lost money, wasted time, upset customers and sometimes expensive litigation.
  • Leaking foundations can even ruin the building structure itself.

PDF Basement Waterproofing Methods, Systems & Products 

Download HERE

What is Below Ground Tanking?

The major waterproofing defence for below ground surfaces is "Tanking"

  • Basement tanking is a traditional term used on older style homes which involves a "slurry" or lining on the basement walls.​
  • Waterproofing products today for externally applied basement membranes include traditional sheet, Torch-On and Liquid Polymer Coatings.
  • Whatever WATERPROOFING PRODUCT is used, all external below ground membranes require adequate access to the foundation base, footings  and external walls dat the  construction stage.
  • Keeping water drained away and preventing water from moving through walls is essential to a successful below ground waterproofing system.


Basement Waterproofing Products 

Basement Waterproofing - Liquid Applied Membranes
Melbourne-Basement Waterproofing - Liquid Applied Membranes

Using Liquid Rubber Membranes for Below Ground Waterproofing

A one coat system saving you time and money, sealing and protecting from water damage

  • Liquid Rubber has a thin, paint like consistency but dries to a seamless rubber membrane with excellent strength, elasticity and adhesion.
  • Liquid Applied Membranes form a permanent water tight  barrier which will not oxidise, craze, crack, loosen or scale over time.
  • Liquid Rubber can withstand soil stresses and resists attack from alkalis, acids, salts and standing moisture.
  • Cures into a continuous self-adhering seamless layer of rubber - providing a durable robust membrane.
  • As a liquid, Liquid Rubber will can conform to any shape, flashing or protrusion-both vertical and horizontal.


Best Basement Waterproofing System 

Of the various waterproofing products available
Findlay-Evans use Liquid Applied Membranes

Advantages of Liquid Applied Membranes for Basements Waterproofing

  • Spray applied  waterproofing creates a seamless membrane – no joins or seams to come apart .
  • Liquid Membranes will bridge cracks, block work contours, and seal around all penetrations, holes etc.
  • Liquid Rubber has crack spanning capabilities  that is resistant to  hydrostatic pressure.
  • FLEXIBILITY with extreme expansion and contraction without cracking or becoming brittle.
  • Can be applied to green (uncured) concrete walls immediately after formwork removed. 
  • Compatible with a wide range of drainage, protection, and insulation boards.

Basement Waterproofing Methods

Basement Waterproofing - Liquid Applied Membranes
Melbourne-Basement Waterproofing - Liquid Applied Membranes

Successful basement waterproofing is a combination of several factors: quality products, knowledge and understanding of problem areas, experience and careful application and most importantly from the builder’s point of view: GOOD SITE PREPARATION

  • Basement tanking or waterproofing requires special care at the weak points of the below ground structure such as the wall to floor junction - this should be completely water tight.
  • Water tends to pool at this "cove joint" and moisture may pond due to ingress from surrounding  soil. 
  • There are many membranes on the market that will break down over time with moisture sitting on the surface.
  • Liquid Rubber can withstand "ponding" water - in fact Liquid Rubber can be used in swimming pools and water features. Ideal for below ground tanking.​

Retaining Wall Waterproofing Systems

Basement Waterproofing - Liquid Applied Membranes
Melbourne-Basement Waterproofing - Liquid Applied Membranes

Below Ground Tanking - Getting It Right

Waterproofing is an area of construction that if it fails, it is very difficult and expensive to fix.

This is especially so with below ground tanking - it is imperative to get it right the first time.

Waterproofing Protection for Exterior Basement Wall 

   Arma-Blue Protection Sheet

  • Protecting a basement waterproofing system from damage is one of the final line of defence.
  • A very common problem we see all too often in the construction industry is the failure of waterproofers and builders not providing adequate protection for a newly installed and perfectly good membrane.
  • A common cause of retaining wall membrane damage is allowing sharp material (such as gravel) to get behind and/or between the protection sheet/s such as the commonly used Core Flute sheet.
  • Stones between the waterproofing membrane and protection sheet have the potential to puncture membrane.
  • However with a bit of due diligence and care required these scenarios can be prevented or at least extensively minimised so a watertight basement / retaining wall is achieved.
  • Protection sheet should always be used PRIOR to backfill.
  • Arma-Blue is a superior means of protecting below ground membranes - tough flexible polymeric board with high strength and excellent puncture resistance.
  • Due to its extreme strength; Arma-Blue has no equal in terms of performance .​
  • Cement Sheet as Protection - If the cement sheet is cracked or broken during aggressive backfilling this will in itself damage the membrane. Cement sheet also costs more and is difficult to handle.
  • Standard drainage systems involving agriculture pipes, often combined with aggregate and geo-fabric.​

Arma-Blue for Basement Waterproofing Membranes

PDF Download Here

DIY Waterproofing - Use Liquid Rubber 

DIY Enthusiasts and Professional Tradesmen!

Safe for DIY Use - Environmentally Friendly - Easy & Cost Effective.

If you can paint you can waterproof !

Easily applied - Roll or Bush-On.DIY Paint On / Roll On or Trowel

DIY Waterproof Liquid Rubber

4 Litre Buckets approx. 3-4m2 @ 2 coats $120.00*

15 Litre Buckets approx. 10-12m2 @ 2 coats $350.00*

* Based on flat metal surfaces. 

Other surfaces ie. old concrete is very porous and will require more product.

We suggest minimum 2 coats of Liquid Rubber to create the waterproof membrane.

Plus delivery if required


How to waterproof a concrete slab?

More information about DIY Waterproofing with Liquid Rubber see: