What is an ITP in construction?

An Inspection and Test Plan (ITP) is a quality assurance document used in construction to define inspection activities, hold points, and witness points at key stages of work. It specifies what needs to be checked, by whom, and records the results for audit and compliance purposes.

How much does HoldPoint QA cost?

HoldPoint QA charges $45 AUD per active project per month for 1–5 projects, and $35 per project per month for 6 or more active projects. There are no per-seat fees or per-document charges. Projects start as draft (free) until the first document is added.

Can external clients sign ITPs without an account?

Yes. HoldPoint QA sends a secure sign-off link via email. External signatories — clients, principal's representatives, or engineers — can review the full ITP checklist and sign digitally without needing an account or app.

Does HoldPoint generate ITP PDFs automatically?

Yes. When an ITP is approved, HoldPoint automatically generates a branded PDF containing all checklist results, inspection notes, photos, and signatures. PDFs are regenerated if any information changes.

What is the most important hold point for waterproofing?

The flood test is the most critical hold point. A minimum 24-hour standing water test must be conducted and signed off before any tiling or screed is applied over the membrane. This is the last opportunity to detect failures before concealment. The ITP should record the test duration, water level, and result with photographic evidence.

What Australian Standard covers waterproofing ITPs?

AS 4654 (Waterproofing of Internal Wet Areas) is the primary standard for commercial projects. AS 3740 covers domestic wet areas. Both specify substrate requirements, membrane types, application methods, and testing requirements. Most project specifications reference AS 4654 and the membrane manufacturer's installation guide.

Do I need a separate waterproofing ITP for each wet area?

Not typically. A single waterproofing ITP template covers all wet areas on a project, with each area recorded as a separate inspection entry. This ensures consistent criteria while tracking each bathroom, balcony, or podium individually. For complex projects with different membrane systems, separate ITPs may be appropriate.

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Free Waterproofing ITP Generator

Generate a complete Inspection & Test Plan for waterproofing works in seconds. Covers substrate preparation, primer application, membrane installation, detail laps and terminations, flood testing, and protection — with hold points for critical concealment stages.

Waterproofing-specific hold points and witness points
Aligned with relevant Australian Standards
PDF emailed to you instantly — no login required
Ready to use on-site or submit to your principal contractor

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Describe your scope of work

Include trade, materials, key activities, and any relevant standards (e.g. AS 3600). More detail = better ITP.

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Background

What is a Waterproofing ITP?

A waterproofing ITP is a quality assurance document that defines every inspection required during waterproofing works — from substrate preparation through to membrane application, flood testing, and protection layer installation. It records who inspected each stage, the result, and where work must stop for mandatory sign-off.

Waterproofing is one of the highest-risk trades in construction because failures are concealed behind tiles, screeds, and finishes. By the time a leak is discovered, remediation costs are typically 10-50x the original waterproofing cost. A complete ITP register with photo evidence at each stage is your primary defence against defect claims.

In Australia, waterproofing ITPs should reference AS 4654 (Waterproofing of Internal Wet Areas) and any manufacturer-specific installation requirements. Hold points are critical at substrate preparation and pre-tiling flood test stages.

Quality checkpoints

Waterproofing ITP Hold Points & Witness Points

The AI generator automatically includes these checkpoints based on your scope description. Hold points require mandatory sign-off before work proceeds; witness points notify the relevant party but don't stop work.

Hold Points

Work stops until signed off

Substrate preparation sign-off (falls, surface condition, curing)
Membrane application inspection (coverage, thickness, laps)
Flood test verification (minimum 24-hour standing water test)

Witness Points

Party notified, work can continue

Primer application and coverage
Detail work at penetrations, corners, and hobs
Protection layer installation
Tiler pre-start inspection post-waterproofing

Applicable Australian Standards

AS 4654 — Waterproofing of Internal Wet Areas
AS 3740 — Waterproofing of Domestic Wet Areas

Common questions

Waterproofing ITP — Frequently Asked Questions

What is the most important hold point for waterproofing?: The flood test is the most critical hold point. A minimum 24-hour standing water test must be conducted and signed off before any tiling or screed is applied over the membrane. This is the last opportunity to detect failures before concealment. The ITP should record the test duration, water level, and result with photographic evidence.
What Australian Standard covers waterproofing ITPs?: AS 4654 (Waterproofing of Internal Wet Areas) is the primary standard for commercial projects. AS 3740 covers domestic wet areas. Both specify substrate requirements, membrane types, application methods, and testing requirements. Most project specifications reference AS 4654 and the membrane manufacturer's installation guide.
Do I need a separate waterproofing ITP for each wet area?: Not typically. A single waterproofing ITP template covers all wet areas on a project, with each area recorded as a separate inspection entry. This ensures consistent criteria while tracking each bathroom, balcony, or podium individually. For complex projects with different membrane systems, separate ITPs may be appropriate.

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