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For building designers, architects and building surveyors

The Waterproofing Time Bomb

Under NCC 2025 the fall, the step down and the hob are set in the slab, not the screed.

Defending high-risk balconies and podiums under the new water management provisions. What NCC 2025 Part F1 now asks of balconies, podiums and concrete roofs in Class 2 to 9 buildings, which edition governs your project in each state, and what your drawings have to show before the structural set is issued.

60 minutes, self-paced
Intermediate level
1 formal CPD point
Certificate on completion
National, NCC 2025 and NCC 2022
Aligned to NSCA 2021
PC12
PC39
PC41
PC46
PC56
$99
inc. GST

Secure card checkout. Tax invoice emailed.

Course content

4 modules, 2 case studies, final quiz and certificate.

Start
5 min

Introduction and objectives

Where the new provisions came from, and the edition dates for every state and territory.

Module 1
11 min

What changed, and what it applies to

Know which balconies, podiums and roofs the provisions reach, and which edition governs the project on your screen.

Module 2
13 min

The structural substrate carries the requirements

Put the 1 in 80 fall, 70 mm step down, 70 mm hob and 20 mm overflow invert on the section, measured at the structure.

Module 3
11 min

Junctions, terminations and penetrations

Detail the threshold, joints, planters and fixings, the places where balconies actually fail.

Module 4
11 min

Drawings, drainage and the record

Settle outlets and membrane choice before the structure is issued, and keep a record of who decided what.

Case studies
3 min

A threshold and a podium

A level threshold carried over from the old edition, and a podium with its falls in the screed.

Summary
2 min

Key takeaways

The habits to take back to your next balcony detail.

Finish

Final quiz and certificate

Ten project scenarios. Pass and the certificate goes straight into your dashboard.

Intermediate. For people who already document or assess balconies, podiums and concrete roofs on Class 2 to 9 buildings. Covers external above-ground waterproofing under Part F1. Internal wet areas are a separate course.

Who it is for

Written for the people whose drawings set the levels.

Building designers

You document balconies and podiums, and a defects claim years later comes back to what your detail showed.

1 CPD point, with audit-ready records

Architects

You lead the design team and carry the coordination between structure, hydraulics and the membrane.

1 formal CPD point

Building surveyors

You assess permit drawings where details carried over from NCC 2022 no longer comply.

1 CPD point

Structural engineers

The fall, the step down and the hob are now slab and formwork decisions, so they land on your drawings.

1 CPD point

Licensed builders

You install to the drawings and approve the substitutions that quietly break compliance.

1 CPD point, state CPD
How it counts

Where this hour goes on your record.

National Standard of Competency for Architects (NSCA 2021) performance criteria this course aligns with:

PC12

Building codes and standards

PC39

Materials with structure and construction

PC41

Coordinating consultant input

PC46

Documentation that complies with codes

PC56

Defects, rectification and substitutions

If you are
How it is recorded
An architect

1 formal CPD point. Aligned with NSCA 2021 performance criteria PC12, PC39, PC41, PC46 and PC56.

A building designer

1 CPD point. 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 CPD is audited.

A building surveyor, engineer or builder

1 hour of CPD on 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.

  • Identify which balconies, podiums and concrete roofs the NCC 2025 water management provisions apply to, and which sit outside them.
  • Confirm which NCC edition governs a project from the staged state and territory adoption dates.
  • Apply the 1:80 fall, 70 mm step down, 70 mm monolithic hob and 20 mm overflow invert to the structural substrate.
  • Distinguish the membrane termination height set by AS 4654.2 from the structural step down at the threshold.
  • Detail exposed joints, penetrations, planters and drainage outlets so the membrane is never compromised.
  • Produce balcony drawings and a coordination record that show who carried each decision.
Keep going

Pairs well with.

Building designers

The other half of Part F: getting water vapour out of the wall.

Builders and designers

The Standard behind the membrane, from the balcony down to the basement.

Builders and designers

The inside of the building: showers, bathrooms and laundries.

Questions

Before you enrol.

My state has not adopted NCC 2025 yet. Is this still for me?

Yes. The course sets out the adoption date for every state and territory, and shows you how to confirm which edition governs a project. The edition follows the approval, not the construction date, so projects you are drawing now may be assessed under NCC 2025.

Start, stop and finish later. Progress is saved and the course stays in your dashboard.

Yes, on passing the final quiz. It is stored in your dashboard alongside your other CPD records.

No. This course covers external balconies, podiums and concrete roofs. Showers, bathrooms and laundries are covered in Wet Area Waterproofing in Practice.

Yes. Team packs start at $579 for six courses shared across your practice.

No. Every course is product neutral. No membrane brands, no sponsor, no sales pitch at the end.

Get the balcony right at the slab, in one self-paced hour.

$99, 60 minutes, certificate on completion.

$99
1 hour, certificate