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Type C Basement Waterproofing Material Calculator (CDM)

Use our Type C (CDM) Material Calculator to estimate the materials required for your basement or cellar waterproofing project. Designed for trade use, it helps you work out membrane coverage and key system components quickly and accurately, so you can order with confidence and avoid unnecessary waste.

Enter your wall and floor measurements below to generate your material requirements. Recommended products will then appear underneath, ready to add straight to your basket for fast, efficient ordering.

✔ Accurate system estimates

✔ Faster ordering

✔ Reduced waste and overspend

Enter your project measurements below to get started.

Type C Basement Waterproofing Material Calculator (CDM)

Area Measurements

Membrane Selection

Additional Options

Required Materials

    How will the system discharge?

    Note: Rolls are rounded up to ensure full coverage. If your layout includes multiple rooms, corners, or penetrations, allow extra for wastage.

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