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How to Use Siding Calculator

Estimate the siding needed for a house in squares from wall and gable areas, minus doors and windows, with waste and cost per square.

About this tool

Estimate the siding squares needed for a house, minus doors and windows.

How to use Siding Calculator

  1. Enter the house perimeter and wall height.
  2. Add gable ends, doors and windows.
  3. Read the squares of siding and cost.

Worked example

A house with a 140 ft perimeter and 10 ft walls needs about 15 squares of siding after openings and waste.

What is a square?

100 square feet of siding or roofing.

Is trim included?

No. Corners, J-channel and soffits are ordered separately by length.

Put this guide into practice

  • Siding Calculator — Estimate the siding squares needed for a house, minus doors and windows.

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