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Estimating Interior Paint


Any room in the house can be enhanced with paint. But how much?
Any room in the house can be enhanced with paint. But how much?
2009 HowStuffWorks

Estimatin­g the paint you'll need for a job is easy. Take a few minutes at home to measure the area to be painted. A gallon of paint will typically cover 450 square feet according to the manufacturer's calculations. It's safer to figure 400 square feet of cove­rage per gallon of paint. If you're buying 2 or more gallons of the same color, it's a good idea to mix them all together at home so color variations don't show up in the ­middle of a wall.

To determine the amount of paint required to cover a wall, multiply the height of the wall by its length, then divide by 400. This means a gallon of paint will cover a 10 X 15-foot room (two 10-foot walls and two 15-foot walls, 8 feet high) with one coat. Two coats will take 2 gallons.

However, there are other factors you should consider when calculating coverage.

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