When did waterproofing become compulsory in Australia?

When did waterproofing become compulsory in Australia?

Since 1996, waterproofing of wet areas has been governed by the relevant Australian Standard AS:3740 (Waterproofing of Wet Areas). During construction any work to wet seal an area must be done by a QBCC licensed contractor (Waterproofer).

Does the whole bathroom need to be waterproofed?

Bathrooms are the main wet area in the house. Therefore, you need to waterproof the area so that water does not get into the substructure of the house and cause major structural damage. It involves setting up a waterproof barrier around the floor and walls of the bathroom, including the shower.

When should I waterproof my bathroom?

At least 1800 millimetres up the walls inside the shower walls must waterproofed. Other walls must be be waterproofed up to 150 millimetres. If you intend to lay timber flooring, plywood or particleboard, or the bathroom is above the ground floor of the house, then the entire floor needs to be waterproofed.

Which Australian standard outlines the minimum requirements for waterproofing a residential bathroom?

The Building Code of Australia
Requirements for waterproofing bathrooms The Building Code of Australia and the Australia Standard (AS 3740-2010) outline the minimum requirements for the waterproofing in residential bathrooms. These requirements include: waterproofing the full floor within the shower recess.

Can you do waterproofing yourself?

Can I do my own waterproofing? In Queensland and NSW, you can only do your own waterproofing if you’re licensed to do so (i.e. the work must be done by someone with a licence).

What is the Australian standard for waterproofing?

Said professionals must provide a statement of compliance once the job is done. This is an indication that the work they have done complies with the Australian Standard AS 3470 – Waterproofing of domestic wet areas.

How do you waterproof a bathroom floor in Australia?


  1. 1Clean the floor. Before you start waterproofing it’s important that the floor is clean.
  2. 2Apply the primer.
  3. 3Silicone the gaps.
  4. 4Apply masking tape to the wall.
  5. 5Apply the waterproofing agent.
  6. 6Apply the waterproof membrane to joints.
  7. 7Waterproof the whole floor.
  8. 8Apply the last coat of waterproofing agent.

How do I know if my bathroom is waterproofing?

Be sure to inspect your bathroom and shower tiles closely. Inspect tiles in the shower floor and walls, the general standing area, tiles near the bathtub and around the basin. If you see any signs of damage have the tiles immediately repaired or replaced.

Can you waterproof your own bathroom?

If you do your own waterproofing, it needs to be done to the Standard and must be able to pass muster with a building inspector. Waterproofing is one area of your home that absolutely has to be done right to prevent serious damage from water and damp further down the track.

How do I waterproof my bathroom walls?

  1. Step 1: Check surface adhesion.
  2. Step 2: Clean work area.
  3. Step 3: Apply corner pieces.
  4. Step 4: Apply tape for corners and edges.
  5. Step 5: Waterproof plumbing fittings.
  6. Step 6: Apply membrane on walls.
  7. Step 7: Correction and finishing.
  8. Step 8: Apply membrane of floor for bathroom sealing.

How much fall should a shower have Australia?

The recommended ratio of fall within showers is between 1:60 and 1:80.

Can tilers do waterproofing?

Do Tilers Do Waterproofing? Yes, some related tradies such as tilers, bathroom renovators and even builders are licensed to carry out waterproofing work.

How long should waterproofing last?

How long does waterproofing last? A quality waterproofing sheet membrane professionally installed should last for a very long time. Most waterproofing products come with a minimum 7 year warranty but correctly applied (pending on which membrane is chosen), a membrane should last much longer than that.

What is a Class 2 waterproofing membrane?

Waterproofing Membranes. Dampfast is a grey, flexible, 2 part Class II waterproofing membrane ideal for areas susceptible to ponding such as swimming pools and spas. Dampflex is a ready to use, white, acrylic based, non-trafficable Class III waterproofing membrane suitable for interior and exterior applications.

How do you waterproof a shower Australia?

There are two options to fix a bad waterproofing application.

  1. An epoxy treatment can be applied to the tiles on the floor and wall to create a protective barrier to moisture and water.
  2. Demolish the bathroom by ripping up tiles and clearing the wall and floor surfaces so the waterproof membrane can be applied again.

What is the best waterproofing membrane for showers Australia?

1 Best Waterproofing Membrane for Shower:

  • 1.1 Laticrete Hydro Barrier.
  • 1.2 CUSTOM BLDG PRODUCTS LQWAF1-2 Redgard Waterproofing.
  • 1.3 USG DUROCK Brand Liquid Waterproofing Membrane.
  • 1.4 Mapei Mapelastic AquaDefense.
  • 1.5 Laticrete 9235 Waterproofing Membrane Roll.
  • 1.6 Schluter Kerdi 108 Sq Ft Waterproofing Membrane.

How do you know if waterproofing has failed?

Check the material to see if it’s mouldy, crumbly or has holes. Touch the grout to find out if it’s soft and powdery… or hard like it should be. Don’t be fooled, even the slightest signs of damage can increase the risk of a leak if left for too long.

Can shower water leak through grout?

Leakages in the shower are most often the result of grout failure. Leaky tiles can be found anywhere where there is water. If the shower water leak is not too much then it may be possible to repair the grout without having to remove the tiles.

Can I do waterproofing myself?

How much does it cost to wet seal a bathroom?

As a rule, professional waterproofing costs around $500 to $650 for an average bathroom. If the waterproofing is done in more than one bathroom or as part of a complete bathroom renovation, the cost may be a little lower.

Do bathrooms have to be waterproofed?

In Queensland and New South Wales, a bathroom must be waterproofed by a technician with a current and valid waterproofing license. When it comes to waterproofing a bathroom, it should be done by a qualified waterproofer even if local requirements state you can apply it yourself.

Can a tiler do waterproofing?

Do Tilers Do Waterproofing? Yes, some related tradies such as tilers, bathroom renovators and even builders are licensed to carry out waterproofing work. Qualified specialists will typically have a Certificate III in Construction Waterproofing.

The recommended ratio of fall within showers is between 1:60 and 1:80. However, the ratios may not be achieved due to: (a) The size of the tiles used – falls become more difficult to achieve with larger tiles.

Quality waterproofing systems should last for at least 10 years. However, this is largely dependent on the type of waterproofing materials used as well as the workmanship of the waterproofing contractor. Statistics have shown that faulty waterproofing is among the top building defects.

Do you need to waterproof your bathroom in Australia?

Waterproofing is very important in wet rooms. There are regulations in place that your waterproofing will need to comply with, as set out by the Building Code of Australia and Australian Standards (AS 3740-1994). In short, they require that:

Do you need a licence to waterproof a bathroom?

To become a qualified waterproofer, a person must be properly trained in how to apply waterproofing according to the Australian Standard. In most cases, this will involve doing a Certificate III training course in waterproofing. You will need a qualified and licensed waterproofer to waterproof your bathroom.

Are there waterproofing standards in the building code of Australia?

Like Part 3.3.4, Part 3.8.1 has highly detailed and specific standards for waterproofing within structures. At Projex Group our products comply and exceed the standards set by the Building Code of Australia. If you have any questions regarding our products, please feel free to contact us on (02) 8336 1666.

Is the Australian bathroom standard the same as the Australian standard?

This is covered by Australian Standard AS 3940-1994, which was updated in 2004, and is the same across all states. The basic standards remain, but new standards stipulate the types of waterproofing materials you need to use.