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Quality & Verification / Site problem guide

Waterproofing membrane below specified thickness

Coverage looks complete but dry film is too thin.

A practical decision sequence

Diagnose the cause, then verify the repair.

Use the site evidence to agree a project-specific method with the responsible engineer, concrete producer, manufacturer or specialist applicator.

01 / Symptom

What is happening?

Coverage looks complete but dry film is too thin.

02 / Inspect and test

Evidence to collect

Review area, material consumption, wet-film readings and substrate roughness.

03 / Likely mechanism

Why it can fail

Uneven application or underestimated consumption can leave thin spots.

04 / Technical response

Choose the system

Apply compatible corrective coat after checking recoat window and substrate condition.

05 / Site execution

Control the application

Use batch and area logs, calibrated gauges and hold points for each coat.

06 / Acceptance

Verify the result

Measure film thickness by approved method and record repairs before concealment.

Avoid this shortcut

Visual colour uniformity is not proof of specified thickness.

These guides are editorial starting points, not a project specification. Confirm the design, product data, substrate conditions and inspection plan for the actual site.
Technical references

References inform the topic; they do not endorse a specific product for this project.

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