Surface Fall Gradient Testing
Surface Fall Gradient Testing is a quantitative assessment of the slope or gradient of horizontal building surfaces to confirm compliance with waterproofing and drainage requirements.
Why Surface Gradient Matters
Water should always flow away from structures—not sit and cause damage. Our Surface Fall Gradient Testing service accurately measures slope levels across wet areas, balconies, podiums, and rooftops to confirm compliance with AS 3740, AS 4654.2, and NCC water‑shedding performance requirements.
How It Works
Using high‑precision digital levelling instruments and laser mapping systems, our technicians measure gradients across the surface to confirm that falls direct water efficiently toward drainage outlets. Results are captured, analysed, and presented in a report clearly identifying compliant and non‑compliant areas.
Benefits for You
Verifies compliance with Australian waterproofing and drainage standards
Prevents ponding, deterioration, and leak risks
Identifies workmanship or design issues early
Provides defensible documentation for certification or dispute resolution
Request Surface Fall Gradient Testing
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