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AS 3740:2021 Waterproofing of Domestic Wet Areas

Self-Assess
Australia
vAS 3740:2021 (published 2021, supersedes AS 3740-2010); no amendment found in the held material
6 domains
58 controls

AS 3740:2021, the Australian Standard for waterproofing domestic wet areas: risk categories for showers, bathrooms and laundries, falls to wastes, approved waterproof and water-resistant materials, membrane installation and curing, termination heights, waterstops, door openings, bond breakers, junctions, penetrations, baths, spas, shower bases and screens, vinyl, polished concrete and floor heating, and membrane continuity testing.

Verified

AS 3740:2021 Waterproofing of Domestic Wet Areas is a compliance framework from Australia with 6 domains and 58 controls. The largest domains are Section 4: Installation - penetrations, baths, shower bases, screens and floor finishes – AS 3740:2021 Waterproofing of Domestic Wet Areas (15 controls), Section 4: Installation - terminations, waterstops, openings and junctions – AS 3740:2021 Waterproofing of Domestic Wet Areas (14 controls), Section 4: Installation - substrates, drainage connections and membranes – AS 3740:2021 Waterproofing of Domestic Wet Areas (11 controls). Every control below carries what it requires and what an assessor expects to see.

Maintained by Gerard Blokdyk

Framework summaries on this platform are AI-assisted interpretations for educational and compliance planning purposes. They do not reproduce or replace the official standards. Refer to the authoritative source for the definitive text. Framework names and trademarks belong to their respective organisations.

Framework Domains (6)

Appendices – AS 3740:2021 Waterproofing of Domestic Wet Areas

1 controls
Controls in the Appendices – AS 3740:2021 Waterproofing of Domestic Wet Areas domain of AS 3740:2021 Waterproofing of Domestic Wet Areas — 1 controls
CodeTitle
as-3740-2021-waterproofing-of-domestic-wet-areas::APP-CAppendix C (normative) Membrane continuity testing methods

Section 2: Design – AS 3740:2021 Waterproofing of Domestic Wet Areas

9 controls
Controls in the Section 2: Design – AS 3740:2021 Waterproofing of Domestic Wet Areas domain of AS 3740:2021 Waterproofing of Domestic Wet Areas — 9 controls
CodeTitle
as-3740-2021-waterproofing-of-domestic-wet-areas::2.1.12.1.1 Design principles: retaining water in the Category 1 area
as-3740-2021-waterproofing-of-domestic-wet-areas::2.1.22.1.2 Material selection: compatibility and resistance to movement and exposure
as-3740-2021-waterproofing-of-domestic-wet-areas::2.2.12.2.1 Enclosed showers: screen prevents water spreading
as-3740-2021-waterproofing-of-domestic-wet-areas::2.2.22.2.2 Unenclosed showers: Type 1 and Type 2 classification
as-3740-2021-waterproofing-of-domestic-wet-areas::2.3.12.3.1 Falls in the substrate under the membrane
as-3740-2021-waterproofing-of-domestic-wet-areas::2.3.22.3.2 Falls in shower floor finishes (Category 1)
as-3740-2021-waterproofing-of-domestic-wet-areas::2.3.32.3.3 Falls in Category 2 floors next to a shower where a floor waste is fitted
as-3740-2021-waterproofing-of-domestic-wet-areas::2.3.42.3.4 Category 3 floors without a floor waste
as-3740-2021-waterproofing-of-domestic-wet-areas::2.3.52.3.5 Whole bathroom designed as an unenclosed shower

Section 3: Materials – AS 3740:2021 Waterproofing of Domestic Wet Areas

8 controls
Controls in the Section 3: Materials – AS 3740:2021 Waterproofing of Domestic Wet Areas domain of AS 3740:2021 Waterproofing of Domestic Wet Areas — 8 controls
CodeTitle
as-3740-2021-waterproofing-of-domestic-wet-areas::3.23.2 Compatibility of system components
as-3740-2021-waterproofing-of-domestic-wet-areas::3.3.13.3.1 Materials deemed waterproof
as-3740-2021-waterproofing-of-domestic-wet-areas::3.3.23.3.2 Water-resistant substrates for walls and floors
as-3740-2021-waterproofing-of-domestic-wet-areas::3.3.33.3.3 Water-resistant surface materials
as-3740-2021-waterproofing-of-domestic-wet-areas::3.43.4 Preformed and prefinished shower bases and enclosures
as-3740-2021-waterproofing-of-domestic-wet-areas::3.53.5 Sealants
as-3740-2021-waterproofing-of-domestic-wet-areas::3.63.6 Fastenings for substrate sheet linings
as-3740-2021-waterproofing-of-domestic-wet-areas::3.73.7 Adhesives

Section 4: Installation - penetrations, baths, shower bases, screens and floor finishes – AS 3740:2021 Waterproofing of Domestic Wet Areas

15 controls
Controls in the Section 4: Installation - penetrations, baths, shower bases, screens and floor finishes – AS 3740:2021 Waterproofing of Domestic Wet Areas domain of AS 3740:2021 Waterproofing of Domestic Wet Areas — 15 controls
CodeTitle
as-3740-2021-waterproofing-of-domestic-wet-areas::4.12.14.12.1 Penetrations in shower areas
as-3740-2021-waterproofing-of-domestic-wet-areas::4.12.24.12.2 Horizontal surface taps at baths and spas
as-3740-2021-waterproofing-of-domestic-wet-areas::4.12.34.12.3 Other penetrations in Category 1 areas
as-3740-2021-waterproofing-of-domestic-wet-areas::4.12.44.12.4 Niches, inlaid soap holders and footrests
as-3740-2021-waterproofing-of-domestic-wet-areas::4.13.14.13.1 Baths and spas: general
as-3740-2021-waterproofing-of-domestic-wet-areas::4.13.24.13.2 Baths without a shower over them
as-3740-2021-waterproofing-of-domestic-wet-areas::4.13.34.13.3 Baths with a shower over them
as-3740-2021-waterproofing-of-domestic-wet-areas::4.13.44.13.4 Freestanding baths
as-3740-2021-waterproofing-of-domestic-wet-areas::4.13.54.13.5 Bath end walls abutting a shower
as-3740-2021-waterproofing-of-domestic-wet-areas::4.13.64.13.6 Spa baths
as-3740-2021-waterproofing-of-domestic-wet-areas::4.144.14 Preformed shower bases
as-3740-2021-waterproofing-of-domestic-wet-areas::4.154.15 Placement of enclosed shower screens
as-3740-2021-waterproofing-of-domestic-wet-areas::4.164.16 Vinyl floor and wall coverings
as-3740-2021-waterproofing-of-domestic-wet-areas::4.174.17 Waterproofing beneath polished concrete
as-3740-2021-waterproofing-of-domestic-wet-areas::4.184.18 Floor heating

Section 4: Installation - substrates, drainage connections and membranes – AS 3740:2021 Waterproofing of Domestic Wet Areas

11 controls
Controls in the Section 4: Installation - substrates, drainage connections and membranes – AS 3740:2021 Waterproofing of Domestic Wet Areas domain of AS 3740:2021 Waterproofing of Domestic Wet Areas — 11 controls
CodeTitle
as-3740-2021-waterproofing-of-domestic-wet-areas::4.24.2 Membrane position relative to tile bed or screed
as-3740-2021-waterproofing-of-domestic-wet-areas::4.3.14.3.1 Membrane to drainage connection at leak control flanges
as-3740-2021-waterproofing-of-domestic-wet-areas::4.3.24.3.2 Linear drainage connections
as-3740-2021-waterproofing-of-domestic-wet-areas::4.4.14.4.1 Surface preparation and substrate falls
as-3740-2021-waterproofing-of-domestic-wet-areas::4.4.34.4.3 Moisture content of substrates
as-3740-2021-waterproofing-of-domestic-wet-areas::4.4.44.4.4 Wall sheeting preparation
as-3740-2021-waterproofing-of-domestic-wet-areas::4.4.54.4.5 Render preparation
as-3740-2021-waterproofing-of-domestic-wet-areas::4.5.14.5.1 Installing an external membrane
as-3740-2021-waterproofing-of-domestic-wet-areas::4.5.24.5.2 Curing of membranes
as-3740-2021-waterproofing-of-domestic-wet-areas::4.5.34.5.3 Membrane inspection before overlay
as-3740-2021-waterproofing-of-domestic-wet-areas::4.5.44.5.4 Additional membrane continuity testing (when carried out)

Section 4: Installation - terminations, waterstops, openings and junctions – AS 3740:2021 Waterproofing of Domestic Wet Areas

14 controls
Controls in the Section 4: Installation - terminations, waterstops, openings and junctions – AS 3740:2021 Waterproofing of Domestic Wet Areas domain of AS 3740:2021 Waterproofing of Domestic Wet Areas — 14 controls
CodeTitle
as-3740-2021-waterproofing-of-domestic-wet-areas::4.104.10 Fillets and bond breakers for bonded membranes
as-3740-2021-waterproofing-of-domestic-wet-areas::4.11.14.11.1 Types of junctions, transitions and terminations
as-3740-2021-waterproofing-of-domestic-wet-areas::4.11.24.11.2 Vertical flashing at shower wall junctions
as-3740-2021-waterproofing-of-domestic-wet-areas::4.6.14.6.1 Membrane termination at shower waterstops
as-3740-2021-waterproofing-of-domestic-wet-areas::4.6.24.6.2 Membrane termination at showers with hobs
as-3740-2021-waterproofing-of-domestic-wet-areas::4.6.34.6.3 Vertical membrane termination heights
as-3740-2021-waterproofing-of-domestic-wet-areas::4.74.7 Hob construction
as-3740-2021-waterproofing-of-domestic-wet-areas::4.8.14.8.1 Waterstops: general
as-3740-2021-waterproofing-of-domestic-wet-areas::4.8.24.8.2 Waterstops for unenclosed showers
as-3740-2021-waterproofing-of-domestic-wet-areas::4.8.34.8.3 Waterstops for enclosed showers
as-3740-2021-waterproofing-of-domestic-wet-areas::4.8.44.8.4 Waterstops for enclosed showers without hobs or set-downs
as-3740-2021-waterproofing-of-domestic-wet-areas::4.8.54.8.5 Showers within 200 mm of an exit from the wet area
as-3740-2021-waterproofing-of-domestic-wet-areas::4.9.14.9.1 Perimeter flashing and waterstops at floor-level door openings
as-3740-2021-waterproofing-of-domestic-wet-areas::4.9.24.9.2 Protecting door frames and architraves

What is AS 3740:2021 Waterproofing of Domestic Wet Areas and who does it apply to?

AS 3740:2021 Waterproofing of Domestic Wet Areas is a compliance framework from Australia with 6 domains and 58 controls. AS 3740:2021, the Australian Standard for waterproofing domestic wet areas: risk categories for showers, bathrooms and laundries, falls to wastes, approved waterproof and water-resistant materials, membrane installation and curing, termination heights, waterstops, door openings, bond breakers, junctions, penetrations, baths, spas, shower bases and screens, vinyl, polished concrete and floor heating, and membrane continuity testing. It is used by organisations to establish and maintain compliance with industry standards and regulatory requirements.

What does AS 3740:2021 Waterproofing of Domestic Wet Areas actually require?

AS 3740:2021 Waterproofing of Domestic Wet Areas has 58 controls organised across 6 domains. The largest domains are Section 4: Installation - penetrations, baths, shower bases, screens and floor finishes – AS 3740:2021 Waterproofing of Domestic Wet Areas (15 controls), Section 4: Installation - terminations, waterstops, openings and junctions – AS 3740:2021 Waterproofing of Domestic Wet Areas (14 controls), Section 4: Installation - substrates, drainage connections and membranes – AS 3740:2021 Waterproofing of Domestic Wet Areas (11 controls). Each control defines specific requirements that organisations must implement to achieve compliance.

If I already comply with another framework, how much of AS 3740:2021 Waterproofing of Domestic Wet Areas do I already cover?

AS 3740:2021 Waterproofing of Domestic Wet Areas does not currently have cross-framework mappings in our system. Check back as we continuously expand our mapping database.

How do I implement AS 3740:2021 Waterproofing of Domestic Wet Areas?

Start your AS 3740:2021 Waterproofing of Domestic Wet Areas compliance journey by running a self-assessment on our platform to identify your current compliance posture. Our AI advisory can answer specific questions about AS 3740:2021 Waterproofing of Domestic Wet Areas requirements, and cross-framework mapping helps you leverage existing controls from other frameworks you may already comply with. Create a free account to access all 58 controls and track your progress.

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