Glossary term

Dimpled membrane on basement walls

Dimpled membrane on basement walls. Check outside ground level, drain and sewer levels and condition of the substrate before deciding what to repair. These observations help separate a surface symptom from water, air, drainage or construction conditions.

Relevant real cases

Editorial caseBasement drainage & exterior waterproofing

Basement flooding after heavy rain: pumping and perimeter drainage

A Danish project report describes approximately one metre of water in a basement after a cloudburst in 2024. The case separates emergency pumping from the later work to manage

Denmark

Editorial caseBasement drainage & exterior waterproofingModerator reviewed

Denmark – perimeter drainage, exterior waterproofing and reinstatement

A first-party drainage case documenting excavation, exterior waterproofing, drains and chambers through to reinstated paving.

Denmark · Sjælland