F3P1 Weatherproofing Performance Solutions
Clause F3P1 of the National Construction Code (NCC) requires that external walls and roofs prevent water penetration which could create unhealthy conditions, unsafe environments, or damage building elements. Demonstrating compliance is not straightforward—it requires a coordinated process of design documentation, testing, and verification.
We are one of the few engineering teams in Australia able to deliver the full F3P1 compliance pathway, including both the preparation of performance documentation and the execution of on-site verification hose testing (AAMA 501.2). This means builders and certifiers can rely on a single independent consultant to provide both the design rationale and the field evidence of compliance.
Our services include:
- Performance-Based Design Briefs (PBDBs) - setting out the compliance strategy for façade, glazing, cladding, balcony membranes, and roofing systems.
- Final Compliance Reports - documenting evidence of suitability and performance solutions for certifier sign-off.
- Shop drawing and detailing reviews - focusing on thresholds, joints, penetrations, and other high-risk interfaces.
- Verification site hose testing (AAMA 501.2) – replicating in-service weather conditions to demonstrate façade water resistance.
- On-site inspections and photographic reporting – confirming workmanship and system continuity at critical stages.
- Technical support during construction – addressing latent conditions, builder queries, and certifier requirements.
By engaging us, builders gain certainty that weatherproofing compliance has been addressed holistically—
reducing the risk of post-completion leaks, rework, or disputes, and ensuring the building envelope meets its
intended performance.
