Estimating the paint you ’ll need for a job is easy . Take a few instant at home to evaluate the area to be painted . A gallon of key will typically plow 450 straight foot according to the manufacturer ’s computation . It ’s safe to figure 400 square feet of coverage per gallon of paint . If you ’re corrupt 2 or more gallons of the same color , it ’s a ripe idea to mix them all together at home so color variations do n’t show up in the middle of a wall .
To watch the amount of paint required to cover a wall , multiply the summit of the rampart by its length , then divide by 400 . This mean a gal of key will cover a 10 X 15 - foot elbow room ( two 10 - human foot walls and two 15 - foot walls , 8 feet high ) with one pelage . Two coats will take 2 gallon .
However , there are other factor you should consider when reckon insurance coverage .
Calculating Paint Coverage
Textured Walls
When a paries is textured or rough - trowel , it will require more paint than if it were a smooth wall . This is because the texture represents added surface to be covered , even though it does not contribute to the sizing of the field . Just how much more surface area there is depends on just how textured the aerofoil is , but for medium - jumpy , porous , or antecedently unpainted walls , you could safely estimate 300 to 350 square feet of coverage from a gallon of paint .
Doors and Windows
Most walls have threshold or window or other area that are not painted . If the nonpainted area is a single window or door , disregard it in your calculations . Two or three windows , a door and a window , multiple sliding door , or a open fireplace reduce the paint you ’ll need . By how much ? Multiply the length by the widths of these nonpainted areas to get the entire square footage that you may take off from your overall Earth’s surface figures , or you may subtract about 15 satisfying foot for distinctive windows and 21 straight feet for distinctive doors . ( These figure also can be used to estimate the paint you ’ll need for each if you design to use a different color or aerofoil finish . ) If you ’re paint the cap , figure its square foot surface area at width times length , too .
Speed Factor
Estimating the prison term you ’ll have to put in on any given paint project is less precise . Some people act faster than others , so there ’s no means to estimate individual differences in swiftness . On the average , you should be able to cover about 120 square feet of flat open in about an hr . For desolate Mrs. Henry Wood or plaster , figure about 100 straight feet . In a distinctive 12 X 15 - foundation room , you ’re probable to spend four or five hours on the job , include trim work , for the first coat . The 2d pelage , if it ’s necessary , will go quicker , but you ’ll have to waitress for the first pelage to dry out , anywhere from 2 to 36 hours .
