Cementitious Waterproofing Calculator

Crystalline waterproofing coverage and application rate.

Surface area (sq ft)

Product (1=crystalline, 2=coating, 3=polymer)

Number of coats

Substrate (1=smooth, 2=broom, 3=block, 4=rough)

Side (1=positive, 2=negative)

Water pressure (PSI)

Tab to move between fields

Material needed (lbs/bags/kits)

Mix water (gallons)0.8

Material cost ($)$77

Total DFT (mils)0

Max pressure rating (PSI)150

Pressure adequateYes

Estimated labor (hours)10

Unit Labellbs

Prep Water (gal)7.5

Cure Time Hours48

How to Use This Calculator

Enter Surface Area (sq ft) — the total concrete or masonry area to be waterproofed.
Select Product (1=crystalline, 2=cementitious coating, 3=polymer-modified) based on your project specification.
Set Number of Coats and Substrate Condition (1=smooth to 4=rough) — rougher surfaces absorb more material.
Choose Application Side (1=positive/exterior, 2=negative/interior) and enter Water Pressure (PSI).
Review Material Needed (lbs/bags) and Max Pressure Rating (PSI) to confirm the system handles your hydrostatic load.
Use Estimated Material Cost and Labor Hours for subcontractor pricing and project scheduling.

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