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Perimeter drainage quote checklist

Use this checklist before you decide

Updated 2026-08-30

Short answer

Use the checklist to document outside ground level and drain and sewer levels. The more specific the documentation, the easier it is to choose the next investigation or solution step.

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Sources and evidence

Method & sources →

Source types stay separate: technical and authority-adjacent sources support rules and risk topics, while project sources document practical experience.

1 technical/authority sourcesUpdated 2026-08-30
□outside ground level
□drain and sewer levels
□water pressure and groundwater
□future inspection and maintenance
□condition of the substrate
□changes after rain
□pipe and cable penetrations
□intended use of the room
Not every point applies to every building. Structural and regulated work can require local professionals and approvals.

Assessment

Basement drainage & exterior waterproofing

A perimeter drain works as a system: water source, drain level, filter layer, inspection access, outlet and exterior waterproofing all matter. A new drain cannot compensate for an outlet that is too high or a wall detail that still admits water.

Evidence & moderation

Editorial policy →
Eurocode 7: Geotechnical designEuropean Commission Joint Research Centre↗

Technical terms

Perimeter drainHydrostatic pressure

Guides

Perimeter drainage around a basementExterior basement waterproofingMaintaining perimeter drainage

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Continue in the same topic

Related guides, problems, checklists, cases and technical terms from the same knowledge area.

GuideExterior basement waterproofing→GuideMaintaining perimeter drainage→GuidePerimeter drainage around a basement→CaseDenmark – perimeter drainage, exterior waterproofing and reinstatement→ProblemDamp or wet wall→ProblemWater on or through the floor→ScenarioWater at exterior basement stairs→ChecklistChecklist: Exterior basement waterproofing→Technical termPerimeter drain→CaseBasement flooding after heavy rain: pumping and perimeter drainage→
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