🏆 National e-Governance Award Winner · C4C Industry Platform · 2019
Waterproofing / Site problem guide

Basement leakage at construction joint

Continuous wet line follows a wall-slab or lift joint.

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?

Continuous wet line follows a wall-slab or lift joint.

02 / Inspect and test

Evidence to collect

Trace the joint, waterbar position if known, concrete defects and hydrostatic head.

03 / Likely mechanism

Why it can fail

Discontinuous waterbar, poor compaction or joint preparation can create connected voids.

04 / Technical response

Choose the system

Design joint injection, external treatment or another compatible repair for access and pressure.

05 / Site execution

Control the application

Prepare and seal the interface; use approved ports or details and keep an injection record.

06 / Acceptance

Verify the result

Check performance during groundwater rise and inspect adjacent joint sections.

Avoid this shortcut

Patching the inside face may redirect water to the next weak point.

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.

☎