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Waterproofing is the process of making an object or structure waterproof or water-resistant. So that it remains relative unaffected by water. Or resisting the ingress of water under specified conditions.
 
https://en.wikipedia.org/wiki/Waterproofing

Construction Waterproofing is the process of making an object or structure waterproof. Or water-resistant. So that it remains relative unaffected by water. Or resisting the ingress of water under specified conditions. Such items you can use in wet environments or underwater to specified depths.

There are regulations in place that your waterproofing will need to follow. As set out by the Building Code of Australia and Australian Standards (AS 3740-2010). In short, they must need that. In the shower, the whole floor must be waterproof. And the shower walls waterproofed up to 1800mm.

Bathrooms, showers, laundries and toilets considered to be wet areas within a home. And as such, the building elements in these rooms must be waterproof or water resistant. For further details of requirements about waterproofing. Refer to the NCC and Australian Standard AS3740.

Bathrooms, showers, laundries and toilets considered to be wet areas within a home. And as such, the building elements in these rooms must be waterproof or water resistant. For further details of requirements about waterproofing. Refer to the NCC and Australian Standard AS3740.

Balconies and rooftops considered to be external wet areas of a home. And as such, the building elements in these areas must be waterproof or water resistant.
 
Remember the reasons why these areas fail due to Building movement. Poor substrate for membrane to bond to or structure construction. Inadequate drainage or poor substrate gradient fall to drainage. Incorrect application or failure of the waterproofing membrane. Inadequate adjacent flashings, including window or door sub seal flashings.
 
For further details of requirements about external waterproofing. Refer to the NCC and Australian Standard AS3740.
Depending on the products used – most waterproofing takes at least 24 hours to completely dry. This can be at least a 2-day process for 2-3 coats.
 
Be sure to check your product manufacturer or MSDS specifications for more information.
  1. Clean the floor. Before you start waterproofing it’s important that the floor is clean.
  2. Apply the primer.
  3. Joint seal the gaps.
  4. Apply masking tape to the wall.
  5. Apply the waterproofing membrane.
  6. Apply the waterproof membrane to joints.
  7. Waterproof the whole floor and/or perimeter.
  8. Apply the last coat of waterproofing agent.
  9. Allow drying time of at least 24 hours.

An attractive tiled shower can enhance the appearance of a bathroom. And contributes to the appeal of a home to potential buyers or renters. Minor features in a tiled shower. Such as a shower recess, niche, nook or cubby offer desirable conveniences.

Where tiles in bathroom are level to the carpet or floorboards. (There is no step up or step down from hallway to tiled area).

A framed shower has metal trim around the entire structure. Including the door. A semi frameless shower enclosure also has metal trim around the entire structure. But does not have metal around the entire door. Thus the term semi frameless.

A frameless shower screen is a shower screen that has no framing around it in any way. Instead, it’s held in place using special clamps or fixings where the panels meet the wall and/or floor.

Technical

Most modern, good quality, waterproofing membranes should last at least 10 years. And likely much longer than that.
 
Be sure to check your product manufacturer or MSDS specifications for more information.
Waterproofing membranes made from several one or more layer. Materials such as rubber, elastomerpolyethylene, polypropylene, bitumen, polyvinyl chloride (PVC), polyurethanes, ethylene propylene diene monomer (M-class) rubber EPDM, silicate, bentonite clay, fabrics, fiberglass, cementious high-build coatings these to name a few.
 
Be sure to check your product manufacturer or MSDS specifications for more information.

For walls required to be waterproof or water resistant. Gyprock recommends a waterproof membrane and tiles over Aquachek plasterboard. There are no statutory requirements for treatment to ceilings of wet areas. But for superior moisture resistance, Gyprock recommends Gyprock Aquachek or Sensitive.

Gyprock Wet Area Solutions for Homes – Gyprock

www.gyprock.com.au/Pages/Solutions/Homes/Wet-Area.aspx
It’s quite common. In modern construction and has many benefits over sand and cement screeds. But you can‘t tile straight onto it with standard adhesives. If you do, there could be a chemical reaction between the screed and the adhesive. And the adhesive may separate from the screed. Ensure your tiler has the correct adhesive to bond the tile and screed together.
 
Another alternative in the shower area. Is to apply a waterproof primer and waterproof acrylic membrane to the screed. This will stop any body fluids building up in the screed bed over time.