Key Considerations for Your Bathroom Drainage Project

Key Considerations for Your Bathroom Drainage Project

Dependable drainage is indispensable to good building design. Knowing which system will best work for your needs will not only provide long-term cost and time-saving benefits, but essential provisions for the health, amenity and safety of building occupants. Here are some of the key considerations for your bathroom drainage project to help architects, specifiers, builders and skilled DIY practitioners select and implement the best drainage solutions. 

1. Unique Design Concerns: Traditional vs. Linear

One of the most important decisions when considering bathroom drainage is how it will be incorporated into an existing room layout.

Traditional bathroom setups are designed with a single, fixed- positioned, primary drainage trap, which typically houses the central floor waste outlet (or overflow gully) for the entire bathroom. It is from this centralised drainage point that all other waste outlets from the bathroom’s fixtures (showers, basins, bathtubs etc.) are connected, forming the bathroom’s interconnected pipe system.

An increasing number of bathrooms are plumbed with separate traps for each fixture, allowing for a more flexibility in your drainage system layout - ideally suited to lineal systems.

While traditional floor waste systems require 4-way grading of floors, and a separate hob to contain water flow, linear grates can be located anywhere within the bathroom/shower area, requiring a simple 2-way floor grading towards the channel.

2. Waterproofing Requirements

Recent changes to the Australian Standards to AS-3740 (‘Waterproofing of wet areas within residential buildings’) introduced in 2010, means builders and designers must abide by strict waterproofing compliance measures to ensure interior spaces are protected from unwanted water incursions.

Your choice of surface material(whether tile,timber,stone or vinyl) will significantly impact your waterproofing requirements and requisite application of water-resistant membranes. Likewise, your building substrate material (whether wood or concrete) will ultimately determine the type of waterstop required for full BCA compliance (for specific waterproofing guidelines, please refer to AS- 3740.)

3. Exposure to the Elements

Seldom considered for interior surfaces, properties located in areas exposed to high airborne salinity (e.g. near breaking surf beaches) require extra precautions to protect drainage systems from corrosion.

Electropolishing offers one of the most effective means to protect grates from harsh or corrosive environments, passivating rust-sensitive iron concentrations in stainless steel grates most prone to oxidation. 

Stormtech works proactively with plumbing advisory services to ensure drainage is not only fit for purpose, but meets stringent Building Code of Australia (BCA) compliance measures. 


Choose from our collection of White Papers produced for Stormtech products and services.


How Proper Planning can stop your project going down the drain

Drains are a vital element of any residential or commercial project. When properly installed, they are effectively out of sight and out of mind, and ensure that important everyday activities including bathing, cooking, and washing can be done safely and efficiently. Unfortunately, drain planning is an often-overlooked element of the construction process. In this whitepaper, How Proper Planning Can Stop Your Project Going Down the Drain, we take a closer look at the importance of planning drain installations. The whitepaper outlines the main factors that must be taken into account when planning a drain: location, drainage style, timing of construction, and regulatory compliance and details the complex regulatory framework surrounding drainage products in Australia.

Drainage Selection Guide: 15 Common Applications Areas

The bathroom, and specifically the shower, is often thought of as the most important space to ensure good drainage. However, there are many other spaces that require consideration in relation to adequate drainage. This whitepaper addresses 15 different potential drainage application areas into clear sections, and highlights the importance of ensuring proper drainage in each area. In each section, potential safety hazards, installation shortfalls, and area-specific challenges are identified. The paper goes on to explain how in most cases, Stormtech’s linear drainage systems offer the best solution to these problems.

Compliance of Regulations and Why It Matters

The issue of non-conforming and non-compliant products affects every stakeholder in the building industry. By ignoring regulations, building professionals endanger, not only their own reputation, but also the status of the entire industry. The plumbing industry has a number of regulations that are important to adhere to. Aspects like minimum size requirements, load restrictions and accessibility are vital for the success of plumbing and drainage systems. In this white paper, we examine why it is important that everyone plays by the rules.

The Pitfalls of Investing in Low Grade Drainage

The importance of choosing compliant and conforming products in construction is regularly discussed in the media and within the industry. The most dramatic examples of the failure of substandard products – such as the Melbourne Docklands fire and the Infinity cable recall – are widely broadcast, yet the range of implications involved in choosing cheaper products remain largely underreported. For building professionals, it is important that the hallmarks of sub-standard drainage systems are easily identified so informed decisions can be made. Products demonstrating reduced flexibility can signal low quality, as they are only relevant for general applications. A cheap solution also suggests a lack of testing, or a short research and development period, which could lead to problems later down the line.    

Specifying Balcony Drainage Systems

Balcony design, and in particular drainage systems are a critical design consideration for multi-residential developments. Balconies are an external element of the building that must be properly integrated to work with the internal elements of the building. Balconies require appropriate drainage and isolation from the internal elements of the building.  

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The Pacific Bondi Case study

In December 2015 Bondi’s newest development, Pacific Bondi, was completed, taking the areas luxury living to a whole new level. To meet the requirements of the hostile beachfront environment, as well as the expected high-traffic hotel and public areas, Stormtech supplied 316 marine grade stainless steel linear drainage for the bathrooms, balconies and panoramic atrium areas.  

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Specification Guide To Pool Area Drainage

A review of specification of drainage products for architects, landscape architects and garden designers to sustainably design for high capacity water flow.

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The Experts Guide to Waterproofing

The Stormtech guide to ensuring your linear drainage waterproofing is installed correctly.

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Meet the Threshold

A Seamless Solution for Your Drainage Project

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Grate Expectations

The Essential Guide for the Modern Drainage Project

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