Measure the room, then inspect what the new floor will cover

Square footage is the easy part. Flatness, moisture, transitions, and product-specific installation limits determine whether the finished floor behaves.

Quantity formula

Break irregular rooms into rectangles, total the square footage, and add waste. Use about 7–10% for a straightforward rectangular layout, more for diagonal patterns, complex cuts, damaged replacement pieces, or future repair stock. Divide the final square footage by the coverage per carton and round up.

Before ordering

• Read the manufacturer’s flatness tolerance and installation instructions.
• Check moisture using a method appropriate for wood or concrete.
• Identify high spots, low spots, movement, squeaks, and damaged subfloor.
• Measure total finished height at doors, appliances, stairs, and transitions.
• Confirm whether an attached pad, separate underlayment, or vapor control layer is allowed.
• Order matching stair noses and transitions early; colors can disappear.

Tool buying rule

Rent or borrow a specialty cutter when the project is small. Buy only when the tool reduces dust, improves repeat cuts, and will be used again. Always make test cuts and follow the flooring manufacturer’s edge and expansion requirements.

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