1. What is Siding Calculation?

The siding calculation determines how much exterior siding material is needed to cover a house. It accounts for the total wall area minus openings like doors and windows, measured in "squares" (1 square = 100 square feet).

2. How Does the Calculator Work?

The calculator uses the siding formula:

Where:

• House Perimeter — Total distance around the house (feet)
• Height — Height of the walls being sided (feet)
• Doors & Windows Area — Total area of all openings (square feet)

Explanation: The equation calculates total wall area, subtracts non-siding areas, and converts to siding squares (each square covers 100 sq ft).

3. Importance of Accurate Siding Calculation

Details: Proper siding calculation ensures you purchase the right amount of materials, minimizing waste and avoiding project delays from insufficient materials.

4. Using the Calculator

Tips: Measure the total linear feet around your house, average wall height, and total area of all doors and windows. Always add 10% extra for waste and cutting.

5. Frequently Asked Questions (FAQ)

Q1: What is a "square" in siding measurement?
A: One square equals 100 square feet of coverage area, which is the standard unit for ordering siding materials.

Q2: How do I measure house perimeter?
A: Measure the total length around your house at the height where siding will be installed, including all walls.

Q3: Should I include gable ends in height measurement?
A: For gable ends, calculate triangular areas separately and add to total square footage before dividing by 100.

Q4: How much extra should I order?
A: Most professionals recommend adding 10-15% to account for cutting waste and future repairs.

Q5: Does this calculator work for all siding types?
A: Yes, the calculation works for vinyl, wood, fiber cement, and other siding types sold by Home Depot.