To determine the area of a room, use a tape measure to get the length and width in feet. Multiplying these two figures gives the total square footage. For rooms with L-shapes, bump-outs, or closets, divide the space into individual rectangular segments, measure each, and sum the results. It is standard practice to add a 10% waste factor for standard layouts or up to 15% for diagonal installations, intricate patterns, or rooms with many corners. This buffer accounts for cutting errors, board damage, and future repairs, ensuring that you have consistent dye lots of material from the same production run.

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