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Exterior Shell Calculators

Calculate breather membrane, cladding, flashing, and seam tape for your home’s exterior envelope.

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How many rolls of breather membrane do I need? Free calculator by wall area — covers standard roll widths with overlap.

Vinyl cladding calculator: Estimate panels by wall area in square metres. Free tool that accounts for doors, windows & 10% waste.

How many HardiePlank boards do I need? Free fibre cement cladding calculator — with waste included.

Window flashing tape calculator: Estimate linear metres for all openings. Free tool for self-adhesive flashing tape.

Other Calculator Categories