When planning a bathroom renovation or upgrade in Australia, one of the most important elements you’ll need to consider is the shower base. Although often overlooked, the shower base plays a critical role in functionality, water drainage, durability, and the overall look and feel of your bathroom.
In this guide, we’ll walk through:
A shower base (also called a shower tray or shower pan, USA and internet only) is the floor of your shower. It forms the foundation that sits directly on the bathroom floor and connects to your plumbing to ensure effective drainage.
Quality matters here because a poorly chosen or badly installed shower base can lead to water leaks, mould problems, structural damage, and ongoing maintenance issues.
A good shower base should be:
Choosing the right shower base is not just a design choice — it affects performance, maintenance and even resale value.
Key Functions of a Shower Base
Water Drainage & Waterproofing
The most important job of a shower base is to direct water to the drain and prevent leaks into your subflooring or bathroom below.
Safety
The surface texture and slope of the base can affect safety — especially important in households with elderly residents or children.
Comfort & Style
Shower bases contribute to the bathroom’s style. With different colours, finishes and profiles, they can make your space feel modern, classic, or spa-like.
3. Types of Shower Bases in Australia
Australia’s housing styles are diverse — from traditional bathrooms in older homes to ultra-modern wet room designs. Here are the most popular shower base types:
1) Pre-Formed Shower Bases Polymarble and Acrylic
These are the most common off-the-shelf shower bases.
Advantages:
Considerations:
Good choice for: Standard bathroom renovations, rental properties, budget-friendly builds.
Acrylic premade shower bases are no longer recommended due to longevity
Low profile premade polymarble shower bases are available in Australia.
2) Tiled Shower Bases
With this style, a waterproof base is built and then tiled to match your bathroom floor.
Advantages:
Considerations:
Excellent for: Luxury bathrooms, ensuite renovations, boutique builds. Pretty much most Bathrooms these days
3) Linear or Channel Drains with Custom Bases
Instead of a central drain, water flows into a sleek channel drain at one end or side or Middle
Advantages:
Considerations:
Best for: Contemporary designs, barrier-free showers.
4) Premade Stone Bases
A composite stone made base of pre determined sizes, similar to a pre made base but high end. They can be installed to tile floor level.
Advantages:
Considerations:
Perfect for: Ultra-modern bathroom renovations or accessible housing.
Each material influences performance, durability, look, and cost.
Acrylic
Common in: Pre-formed shower trays.
Fibreglass / Resin Composites (polymarble)
Common in: Budget-friendly bases
Stone composite pre made
This is common in high-range shower bases in Australia.
Ceramic or Porcelain Tile
Used in custom bases and bathroom designs.
Australians commonly use the following shower base sizes — but you should plan based on your bathroom size and use:
Common Size (mm) | Ideal For |
900 x 900 | Standard family bathroom |
900 x 1100 | Custom tiled sizes |
1200 x 900 | premade or tiled |
1500 x 900 | Spacious walk-in shower |
Custom sizes | Unique, irregular |
Australian Standard Considerations
Drainage type affects water flow and bathroom design.
1. Centre Drains
Classic and easy to install. Most recommended for water flow.
Pros:
Cons:
2. Linear / Channel Drains
Pros:
Cons:
3. Side Drains
A compromise option — not fully centre or fully linear.
Pre-Formed Shower Bases
Average time: 2–4 hours (plus drying)
Custom Tiled Bases
Time: 1–2 days, requires skilled trades
Waterproofing is non-negotiable. In Australia, shower bases must be installed with compliant waterproof membranes (AS 3740 Standard). Penalties for non-compliance include warranty issues, insurance refusal, and long-term damage.
Waterproofing Essentials
Ask your builder or tiler for waterproofing certificates.
Popular tile options for shower bases in Australia:
Important: Choose tiles** rated for wet areas** and pair with appropriate grout and sealers.
If you need an accessible shower:
No step entrance (level access)
Linear drain for smoother slope
Slip-resistant floor
Space for a shower seat
These are especially valuable in homes with elderly or mobility-challenged residents.
Australia’s environment can mean soaps, hard water and humid conditions — so maintaining your base matters.
Daily/Weekly Care
Monthly
Avoid
Estimated costs (AUD) — vary by city, supplier, and installer:
Component | Typical Range |
Pre-formed shower base | $250 – $800 |
Custom tiled base installation | $1,000 – $2000+ |
Linear drain | $99 – $500 |
Waterproofing membranes | $800 – $1,500 |
Trades installation (tiler + plumber) | $1,000 – $3,000 |
Total renovation with shower | $6,000 – $9,000+ |
Note: Costs can change depending on materials, bathroom size, and finishes.
Pre-Formed Shower Base
Pros: Budget-friendly, quick install
Cons: Limited design customisation
Custom Tiled Base
Pros: Premium look, matches floor
Cons: Higher cost, longer install
Linear Drain with Custom Base
Pros: Modern aesthetic, accessible
Cons: Requires precision install
Stone Base
Pros: Seamless – no grout, Luxury design
Cons: Most complex install
Ask yourself:
Then match your answers to your preferred base type. A smaller bathroom may benefit from a compact pre-formed tray, while a luxury ensuite could call for a custom tiled base with a linear drain.
Choosing a base without measuring shower space first
Skipping professional waterproofing
Ignoring drain position and slope direction
Picking tiles not rated for wet zones
Overlooking slip resistance
DIY is possible only with pre-formed trays — but waterproofing and plumbing must meet standards. Professional installation is strongly recommended.
A quality base with proper installation can last 10–25 years or more.
It depends on style preference and budget. Tiled bases look more customised but cost more.
Yes — chips or cracks in pre-formed bases can sometimes be repaired. Grout and silicone can be refreshed too.
The shower base is more than just a floor — it’s a functional cornerstone of your bathroom. Choosing the right type, material, size, and installation method will improve everyday comfort, protect your home, and enhance resale value.
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