Once you have the interior square footage calculated, experts say you’ll want to divide by 350. 350 square feet is the average coverage of a gallon of paint (though some say 250-400 square feet). The average coverage for a gallon of primer is 200 square feet. Your square footage divided by 350 square feet gets you the number of gallons of paint you’ll need. Square footage divided by 200 gets you the number of gallons of primer you’ll need. You can save money by ensuring you don’t buy too much paint.

Keep in mind that color can impact the way a room appears in many ways. Light colors may help brighten a darker space. Cool colors will recede visually from the eye, and make a small space appear bigger. Warm colors contract visually, which can make larger spaces appear smaller or more cozy. Combining cool and warm tones in one room - like with accent walls - can visually change the shape of a room, making rectangles look more like squares. Thornton Home Painting
I hired Israel General Painting to paint the exterior of my house. He helped with color schemes and also getting samples to test. As we decided on the colors he washed and prepared the house then primed and painted. Did a great job. He was very flexible with color changes. He also did a different color around doors and windows with no extra charge. He also primed and painted the porch. He was quite punctual unless my experience with other contractors, which was really good. After the painting was done he also cleaned the roof and around the house and putting back the things in place. We ended up with him painting a room in the house as well (of course that’s with a new quote). I highly recommend Israel General Painting for your painting needs. I plan on hiring Israel again to paint the interior of the rest of my house next year!
Once you have the approximate square footage that you’ll need to paint, remember that a gallon of paint generally covers between 250 and 400 square feet. You’ll need more if you’re painting a rough, porous material, or if you want to paint a dark house a much lighter color. Depending on your color choice, you may need a more expensive tinted primer to help with the color transition. Thornton House Painters