Address
{{propApi.title}}
{{propApi.text}} {{region}} Change location{{propApi.title}}
{{propApi.successMessage}} {{region}} Change location Address
{{propApi.title}}
{{propApi.text}} {{region}} Change location{{propApi.title}}
{{propApi.successMessage}} {{region}} Change locationMember and guest login
Enter your email and password to access secured content, members only resources and discount prices.
Did you become a member online? If not, you will need to activate your account to login.
If you are having problems logging in, please call HIA helpdesk on 1300 650 620 during business hours.
Forgotten password
Need some help?
If you are having problems logging in, please call HIA helpdesk on 1300 650 620 during business hours.
If the email address you have entered is registered, you will receive an email with further instructions.
Become part of the HIA community
Enables quick and easy registration for future events or learning and grants access to expert advice and valuable resources.
Create a guest account
Enter your details below and create a login
The Australian Standard 3740:2021 sets out the requirements for the materials, design and installation of waterproofing for domestic wet areas in residential buildings.
Friday, 28th January 2022
What's Included
AS 3740:2021 is broken into 3 sections consisting of:
- Section 1 – provides the scope and definitions applicable to this standard and the other normative reference documents that are specified
- Section 2 - sets out the acceptable waterproof and water-resistant materials to be used in waterproofing systems for walls and floors in wet areas
- Section 3 - sets out the details for the installation of waterproof and water-resistant materials to be used in shower areas, showers over baths, baths and spas, junctions, and penetrations. As well as general requirements in shower areas such as step downs, hob construction and requirements for enclosed and unenclosed showers
This Standard also contains 3 informative appendices consisting of:
- Appendix A - (informative) Design consideration in wet area requirements provides information that should be considered when designing waterproofing systems for wet areas and includes guidelines for dealing with the degree of risk, and the types of materials used and their locations in the construction
- Appendix B - (informative) Falls in floor finishes outlines the primary consideration for falls in floor finishes
- Appendix C - (informative) Extent of waterproofing. The information in this appendix is based on Table F1.7 BCA Vol 1 and Table 3.8.1.1 BCA Vol 2 and provides diagrammatic representation of the extent of the waterproofing specified in the tables
This standard is referenced in both Volume One and Two of the NCC and applies to Class 1, Class 2, and Class 4 buildings and to wet areas within other buildings with a similar level of use including sole-occupancy units within a Class 3 building.
Share with your network:
More articles on:
Find the latest expert advice, guides and much more!
Was this page helpful?
Thank you for submitting your feedback.
Who is it for?
Building Professionals
The primary users of this standard are:
Waterproofing
AS 3740:2021 Waterproofing of domestic wet areas
This Standard set out minimum requirements for the materials, design and installation of waterproofing for domestic wet areas.
Non-member price $ 235
Member/Subscriber price $215
AS 3958.1-2007 Ceramic tiles - Guide to the installation of ceramic tiles
This Standard provides guidance on the preparation of the background and the fixing of floor and wall tiles and mosaic tiles. It also provides information on the application of tiles in swimming pools, gradients of floors, screeds...
Non-member price $ 319
Member/Subscriber price $299
AS 4200.1:2017 Pliable building membranes and underlays, Part 1: Materials
This Standard sets out requirements for materials used as pliable building membranes (also known as ‘sarking’ or ‘underlay’), when used either independently or as a facing to other materials, such as insulation materials, for any ...
Non-member price $ 109
Member/Subscriber price $89
AS 4200.2:2017 Pliable building membranes and underlays, Part 2: Installation
This Standard sets out requirements for the installation of pliable building membranes (also known as ‘sarking’ or ‘underlay’), when used either independently or as a facing to other materials, such as insulation materials, for an...
Non-member price $ 171
Member/Subscriber price $151
AS 4654.1-2012 Waterproofing membranes for external above-ground use, Part 1: Materials
This Standard sets out the requirements for waterproofing membranes that are used for external aboveground applications and installed in accordance with AS 4654.2.
Non-member price $ 171
Member/Subscriber price $151
AS 4654.2-2012 Waterproofing membranes for external above-ground use, Part 2: Design and installation
This Standard sets out requirements for the design and installation of above-ground external waterproofing membranes for use in buildings and structures for example roofs and balconies and is also suitable for landscaped areas.
Non-member price $ 140
Member/Subscriber price $120