Pick up where you left off.
Course Content
External and Below-Ground Waterproofing (AS 4654)
On a balcony, podium or basement wall, a leak is a structural repair, and it carries your name.
Balconies, podiums, planters and basements, installed to AS 4654 and checked against the NCC 2025 Part F1 figures. What to measure on the slab before you open a tin, how to detail the edges and penetrations where external membranes fail, and how to protect and drain what is built over the membrane after the flood test. Then where the Standard stops below ground, and what to ask for before you price.
Secure card checkout. Tax invoice emailed.
4 modules, 2 case studies, final quiz and certificate.
Introduction and objectives
Why an external leak is a structural repair rather than a callback, and the four things you will be able to do by the end.
Falls, drainage and the substrate: getting the water away
Measure the fall, step-down, hob, overflow and joint layout before you price, and give the bed a way out at membrane level.
Upstands, terminations, penetrations and movement
Terminate above the finished surface, sleeve every pipe and post, and build corners and joints so the membrane flexes instead of splitting.
Balconies and podiums: the system over the membrane
Protect the membrane the day the flood test passes, send the sequence note, and tell a drained or bonded finish from a tank.
Planters, roof gardens, below ground and the record
Know where AS 4654 stops, ask for the planter or tanking design in writing, and keep the record that decides whose repair it is.
A balcony and a basement wall
A balcony that passed its flood test and failed the building, and a basement room that leaked from the wall and the planter above it.
Key takeaways
The five checks to take onto your next deck.
Final quiz and certificate
Ten site scenarios. Pass and the certificate goes straight into your dashboard.
Intermediate. For people who already install, supervise or inspect external membranes. Covers balconies, podiums, concrete roofs, planters and roof gardens under AS 4654 and NCC 2025 Part F1, and the questions to ask before tanking below ground. It does not teach below-ground tanking design, which comes from the engineer and the system manufacturer, and it is not legal or insurance advice. Internal wet areas are a separate course.
Written for the trades who put the membrane down and build over it.
Licensed waterproofers and membrane applicators
Your membrane passes its flood test, other trades build over it, and any leak below gets called a membrane failure.
Licensed builders and site supervisors
You sequence the screeder, the tiler and the balustrade contractor over a membrane nobody can see once the bed goes down.
Tilers, pavers and landscape contractors
Your bed, pedestals and planters sit on the membrane, and they decide whether water can leave at membrane level.
Building surveyors and certifiers
You see the slab before the membrane and the claim after it, and need to know what a compliant fall, outlet and hob look like.
Architects and building designers
Your threshold, outlet, balustrade and planter details are the ones the installer has to build to, or write to you asking for.
Where this hour goes on your record.
National Standard of Competency for Architects (NSCA 2021) performance criteria this course aligns with:
Building codes and standards
Documentation installers can check
Materials and performance standards
Document control during construction
Substitutions and late changes on site
| If you are | How it is recorded |
|---|---|
| A licensed waterproofer or membrane applicator | 1 hour of CPD on external and below-ground waterproofing to AS 4654. Your certificate, the learning outcomes, the module outline and your quiz result are kept in your dashboard, so you can show what you studied if your licensing body or a head contractor asks. |
| An architect | 1 formal CPD point. Aligned with NSCA 2021 performance criteria PC12, PC37, PC45, PC55 and PC56. |
| A builder, tiler, surveyor or building designer | 1 hour of CPD on AS 4654 and NCC 2025 Part F1, recorded on your certificate for your registration body or state scheme. |
CPD On Demand is not a registered training organisation and courses are not accredited by any registration body. Each course is aligned with the relevant competency frameworks and gives you the records to evidence it. CPD rules differ by registration body and state, so check with yours if you are unsure.
Pairs well with.
Wet Area Waterproofing in Practice (AS 3740)
The inside of the building: showers, bathrooms and laundries to the wet area Standard.
The Waterproofing Time Bomb: Defending High-Risk Balconies and Podiums
The same decks from the drawing board: what the balcony section has to show before the slab is poured.
Balcony Waterproofing Under NCC 2025: What Has Actually Changed (and What Hasn’t)
What NCC 2025 changed for balconies, and what it left alone.
Before you enrol.
Measure the slab, drain the bed and keep the record, in one self-paced hour.
$99, 60 minutes, certificate on completion.