Pick up where you left off.
Course Content
The Breathable Wall: Understanding Condensation Risks in NCC 2025
Condensation stays hidden behind the lining until the mould call, two winters after handover.
Understanding condensation risks in NCC 2025. How warm, moist air turns to water inside Class 1 walls and roofs, when a drained and ventilated cavity is mandatory, which membrane class Table 10.8.1 asks for in each climate zone, and what a certifier needs to see on the wall section and in the specification.
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4 modules, 2 case studies, final quiz and certificate.
Introduction and objectives
Which edition applies where you practise, and what NCC 2025 changed about condensation.
Reading the Risk: How Condensation Forms in Homes
Explain dew point and vapour drive, and find where moisture collects inside a well sealed, well insulated home.
The Ventilated Cavity: Designing Walls That Drain and Breathe
Know when a drained and ventilated cavity is mandatory, and the depth, openings and roof ventilation that make it work.
Choosing the Membrane: Vapour Control by Climate Zone
Read Table 10.8.1 and pick the membrane vapour permeance class for the climate zone and the wall.
Documenting for Approval: Details That Pass First Time
Put the cavity, the membrane class, the openings and the Standards on the section and in the specification a certifier reads.
A cavity at certification and a mould call
A zone seven wall caught at certification, and a cool zone home sealed on both faces. Both are illustrative.
Key takeaways
Understand the risk, design the cavity, choose by climate and document to approve.
Final quiz and certificate
Ten project scenarios across the four learning objectives. Pass and the certificate goes straight into your dashboard.
Beginner. For people who document, build or assess Class 1 homes under Volume Two. Covers condensation physics, drained and ventilated cavities, membrane selection by climate zone, roof ventilation and exhaust discharge, and the documentation a certifier needs, with each figure labelled NCC 2025 or NCC 2022. It does not cover Class 2 to 9 buildings under Volume One Part F8, or energy rating.
Written for the people whose wall section decides whether the house can dry.
Building designers
You document Class 1 homes in Volume Two, and the wrap and cavity on your section decide where moisture goes.
Architects
You carry a standard wall detail across climate zones and need to know where it stops complying.
Building surveyors
You check the cavity, the membrane class and the openings against Part 10.8 before the frame goes up.
Residential builders
You build the cavity and fix the membrane, and a mould call after handover lands on you first.
Energy assessors
Tighter, better insulated homes hold more moisture, so the star rating and the wall have to work together.
Where this hour goes on your record.
National Standard of Competency for Architects (NSCA 2021) performance criteria this course aligns with:
Advice under building codes and standards
Building science applied to design performance
Integrating thermal and other environmental systems
Performance standards for materials and systems
Documentation that complies with codes
| If you are | How it is recorded |
|---|---|
| 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. |
| An architect | 1 formal CPD point. Aligned with NSCA 2021 performance criteria PC12, PC28, PC33, PC45 and PC46. |
| A building surveyor, builder or energy assessor | 1 hour of CPD on condensation management under NCC 2025 and NCC 2022, recorded on your certificate for your registration body, state scheme or accreditation body. |
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.
The Waterproofing Time Bomb: Defending High-Risk Balconies and Podiums
The other half of Part F: keeping water out of balconies, podiums and concrete roofs.
Insulation Documentation That Gets Approved: What Reviewers Actually Look For
How reviewers read the insulation that sits behind your membrane.
Bio-Based Building Materials: Risks, Benefits & Compliance
The same wall provisions applied to hempcrete and straw bale walls.
Before you enrol.
Design a wall that drains, breathes and passes certification, in one self-paced hour.
$99, 60 minutes, certificate on completion.