How much siding do I need?

Multiply your wall area by a waste factor (10% for simple homes, 15% for cut-up ones). Siding is sold by the square, which covers 100 square feet.

What is a 'square' of siding?

A square covers 100 square feet of wall. Siding and roofing are commonly ordered by the square.

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Square footage and squares of siding for a home.

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Wall area (sq ft)Waste

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How much siding do I need?: Multiply your wall area by a waste factor (10% for simple homes, 15% for cut-up ones). Siding is sold by the square, which covers 100 square feet.
What is a 'square' of siding?: A square covers 100 square feet of wall. Siding and roofing are commonly ordered by the square.