QA/QC › Waterproofing › Membrane Thickness Test

Test-report · QC-WPF-TST-002

Membrane Thickness Test Report

6 checkpoints across 3 sections. After waterproofing application; before flood test or finish application

6 Checkpoints

3 Sections

During application (if possible) and post-cure; minimum 5 tests per 100m²

QC Engineer, Waterproofing Contractor

S.No.	Checkpoint	IS Requirement
A. TEST PROCEDURE
A1	DFT (Dry Film Thickness) measured with electronic gauge; typical tolerance ±25 microns Acceptance: Gauge calibrated; substrate and film thickness measured; difference = DFT	Cl. 402 — Measurement method
B. TEST RESULTS
B1	Test point 1: DFT measured (microns); location documented Acceptance: Typical spec: 1.5-3.0mm DFT for single/double coat liquid membranes	Cl. 402 — Individual reading
B2	Test point 2-5: DFT measured at different locations; variations noted Acceptance: 5 test points minimum per 100m²; readings distributed across area; corner/edge samples required	Cl. 402 — Multiple readings
B3	Average DFT calculated; minimum and maximum values recorded; variation noted Acceptance: Average should meet or exceed spec; variation <±20% from average; consistency indicator	Cl. 402 — Statistical summary
C. ACCEPTANCE CRITERIA
C1	DFT compliance: Average measured DFT ≥ specification minimum (typically 1.5mm for single-coat) Acceptance: Single-coat min: 1.5mm; two-coat min: 2.5-3.0mm; all points ≥85% of average acceptable	Cl. 402 — Thickness acceptance
C2	Uniformity: No point more than ±20% below average; indicates consistent application Acceptance: Variation ≤±20% from average = PASS; >±20% = thin spots requiring re-coat; re-test after touch-up	Cl. 402 — Application quality

A. TEST PROCEDURE

A1DFT (Dry Film Thickness) measured with electronic gauge; typical tolerance ±25 microns

Cl. 402 — Measurement method (IS 2645)

✓ Gauge calibrated; substrate and film thickness measured; difference = DFT

B. TEST RESULTS

B1Test point 1: DFT measured (microns); location documented

Cl. 402 — Individual reading (IS 2645)

✓ Typical spec: 1.5-3.0mm DFT for single/double coat liquid membranes

B2Test point 2-5: DFT measured at different locations; variations noted

Cl. 402 — Multiple readings (IS 2645)

✓ 5 test points minimum per 100m²; readings distributed across area; corner/edge samples required

B3Average DFT calculated; minimum and maximum values recorded; variation noted

Cl. 402 — Statistical summary (IS 2645)

✓ Average should meet or exceed spec; variation <±20% from average; consistency indicator

C. ACCEPTANCE CRITERIA

C1DFT compliance: Average measured DFT ≥ specification minimum (typically 1.5mm for single-coat)

Cl. 402 — Thickness acceptance (IS 2645)

✓ Single-coat min: 1.5mm; two-coat min: 2.5-3.0mm; all points ≥85% of average acceptable

C2Uniformity: No point more than ±20% below average; indicates consistent application

Cl. 402 — Application quality (IS 2645)

✓ Variation ≤±20% from average = PASS; >±20% = thin spots requiring re-coat; re-test after touch-up

Inspection Sign-Off

PASSED

FAILED — TOUCH-UP REQUIRED

Test Conducted By

Name / Sign / Date

Reviewed By

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