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Waterproofing Material Calculator

Estimate coating weight for terraces, balconies and wet-area surfaces. Get an instant estimate and review every assumption behind the result.

More than a calculatorFormula + example + sizes + cost guide + FAQs
STEP 1

Enter your measurements

Choose your unit: dimensional fields support inches, millimeters, feet, yards, centimeters and meters with automatic conversion.

Estimated coating material required—kg

Planning estimate: verify site dimensions, product specifications, local requirements and professional drawings before ordering or construction.

Complete planning guide

How to use the Waterproofing Material Calculator

Measure all surfaces to be treated, including upstands where applicable, and enter the product’s consumption for each coat. If the data sheet quotes consumption for the complete waterproofing system, set coats to one and enter the total-system rate. This tool estimates coating weight; it does not determine waterproofing design or treatment thickness.

Material sizes & reference dimensions

Use these as common planning references only. Actual product sizes, structural dimensions and effective coverage can vary by manufacturer, region, design and specification.

ReferenceCommon size / rangePlanning note
Coating consumption0.8 kg/m² per coat assumedUse the selected system’s data sheet.
Area50 m² in the exampleAdd upstands and other treated surfaces.
Material basiskgDo not enter litres per m² as kilograms.

Cost guide

Multiply the result by your current supplier rate per kg. Check packaging and include delivery, installation and accessories separately. The calculator does not include prices or assume a current market rate.

Simple budgeting method

Calculated quantity × current unit rate + labour + transport + taxes + accessories + waste/contingency = preliminary project budget.

Practical accuracy tips

  • Include vertical upstands in the area.
  • Use the product’s required consumption and coat count.
  • Primer, reinforcement fabric, joint treatment and repairs are separate.

Frequently asked questions

Does this include primer and mesh?

No. Calculate primer, reinforcement and joint accessories separately.

Can I use a litre-based coverage figure?

Not directly. This calculator uses kilograms. Use the manufacturer’s stated mass consumption or a documented density conversion.