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Method Statement: Inverted (Protected) Membrane Roof (PMR) Assembly inspection and test plan example.

Inspection and Test Plan for Method Statement: Inverted (Protected) Membrane Roof (PMR) Assembly

AI-assisted inspection and test plan connected to a method statement, with PDF and Excel export.

Published 04 Oct 2026 Rev. 00 1 views
About this ITP: Defines inspection points and acceptance criteria for each PMR activity from substrate checks to final handover. Includes testing frequencies and records.

More than a static template

Unlike a downloadable Word or PDF template, this ITP is an AI-assisted editable starting point directly connected to its method statement. Every inspection activity, hold point, and acceptance criterion is structured and ready to adapt to your project.

  • AI-assisted customization — Tailor inspection activities and acceptance criteria to your specific project scope.
  • Linked method statement — This ITP is connected to the corresponding method statement describing the work sequence.
  • Multiple export formats — Download as a formatted PDF or editable Excel spreadsheet.
  • Editable starting point, not a final document — Review and verify all content against your project specifications and standards before use.

What you can customize

When you save this ITP to your account, every inspection row becomes editable. You can add, remove, or modify:

  • Inspection activity — Description of what is being inspected.
  • Inspection type — Hold point (H), Witness point (W), Review (R), or Monitor (M).
  • Responsibility — Contractor, subcontractor, engineer, or client.
  • Frequency — How often the inspection occurs.
  • Acceptance criteria — Referenced standard or specification requirement.
  • Records — Forms, test reports, or checklists required as evidence.

Why this ITP is used

To control quality and verify compliance of each PMR construction stage before concealment and handover.

Who uses this inspection and test plan

Contractor QA/QC, roofing supervisor, and Consultant/Client representatives.

When this ITP is prepared and submitted

From material delivery through substrate preparation, membrane installation and testing, to final ballast placement and acceptance.

Who receives or approves this ITP

Engineer/Consultant for approval before works commence.

Inspection scope

Materials verification, substrate readiness, membrane seams and adhesion, watertightness testing, XPS/geotextile installation, ballast placement, and final inspection.

Typical hold, witness, and review points

Hold: substrate readiness, membrane completion, flood test results, ballast at edges/corners, final inspection. Witness: primer, seams, XPS/geotextile, pavers.

Typical inspection records

Material certificates, inspection checklists, seam test logs, flood/ELD reports, photographic evidence, as-builts, completion certificate.

Important approval note

This ITP is an AI-assisted editable starting point, not a pre-approved document. Before use on any project, all inspection activities, hold points, and acceptance criteria must be reviewed and approved by the relevant parties (superintendent, principal contractor, or client representative) in accordance with your contract and project quality plan.

Always verify acceptance criteria against your applicable drawings, specifications, and regulatory requirements. Hold points must be confirmed with the relevant authority before work proceeds past that point.

Inspection and test plan

Activity Inspection / Test Acceptance Criteria Responsibility Record
Materials receipt and verification Check against approved submittals Materials match approvals; undamaged; within shelf life. QA/QC Engineer Material inspection form
Substrate readiness inspection Moisture meter; level survey Dry, sound; falls ≥ 1:80; adhesion pull-off ≥ 1.5 MPa if required [Verify]. QA/QC + Consultant Substrate checklist, photos
Primer application Visual; touch/tack test Uniform coverage; tack per IFU; no pooling. Supervisor/QA Daily log
Membrane seams and adhesion Prob­ing 100%; hand-peel tests Side laps ≥ 80 mm; end laps ≥ 100 mm; continuous bleed 5–8 mm; peel test pass (no delam). QA/QC + Supervisor Seam inspection sheet
Detailing at upstands/penetrations Visual; fixings torque if applicable Upstands ≥ 150 mm; neat terminations; secure fixings; no fishmouths. QA/QC + Consultant Detail inspection record
Flood test or ELD ASTM D5957 (24–48 h @ 25–50 mm) or ASTM D7877 ELD Zero leaks; all defects repaired and retested until pass. QA/QC + Consultant Test report with plan
XPS installation Visual; board checks Correct class and thickness; joints ≤ 5 mm; layers offset ≥ 300 mm (if double). QA/QC XPS checklist
Filter geotextile Visual; measure overlaps Continuous coverage; overlaps ≥ 150 mm; upturns ≥ 100 mm. QA/QC Geotextile record
Ballast – gravel Mass/depth spot checks; visual for fines Meets design kg/m² [Verify]; uniform spread; drains clear. QA/QC + Consultant Ballast log
Ballast – concrete pavers Straightedge; pedestal seating ±3 mm under 2 m straightedge; consistent joints; stable seating. QA/QC Paver QA sheet
Final inspection and handover Function check of drains/overflows Clean, defect-free; documentation complete; access maintained. QA/QC + Consultant Completion certificate, as-builts

This table is a read-only public reference. Download the PDF or Excel version, or customize this ITP to edit it for your project.

Frequently asked questions

Yes, if approved by the Engineer and suitable for the membrane type. Follow ASTM D7877 and provide a calibration/coverage map.

Typically at least one hand-peel per 200 m² or per manufacturer guidance. Increase frequency in critical areas or if defects are found.

Related method statement

This Inspection and Test Plan is associated with the Method Statement: Inverted (Protected) Membrane Roof (PMR) Assembly method statement, which describes the step-by-step construction sequence, resources, materials, equipment, safety controls, and environmental controls for this activity.

View the Method Statement: Inverted (Protected) Membrane Roof (PMR) Assembly method statement →

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