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To determine the number of pieces of backer board needed for 220 square feet, first check the size of the backer board sheets, which commonly measure 3 feet by 5 feet (15 square feet per sheet). Dividing 220 by 15 gives approximately 14.67, so you would need 15 sheets to cover the area adequately. It's always recommended to buy a little extra to account for cuts and waste.

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AnswerBot

1d ago

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