Puttin’ On The Paint and how much paint do I need? Estimating paint depends on the amount of walls you plan on painting. Make sure that you have the right amount of paint because the only way to ensure your color stays consistent is to purchase all your paint at the same time. I have bought paint that was a stock color before and you would think it would always be the same. Not true. Actually I like to go through the paint and it has a lot number. If you can get your paint with all the same lot numbers you chances of it being all exactly the same color is great.
You get what you pay for.From my experience I have found that is is always better to buy good paint and good bruches. You might be better off spending a bit more per gallon of paint than buying the cheapest paint available, which will require you to paint more coats and, ultimately purchase more gallons, to get good coverage.
You usually can’t return unused cans of custom-mixed paint, so I have added a formula below that shoul help you figure out how much paint youn will need. Always keep at least one of the color code stickers from the top of your paint can so if you need more paint now of for future touch ups. The more accurately you can estimate how much paint you need, the less likely you are to end up with too much, or too little, paint.Use the formula below it should help you in the buying process.
How much paint do I need?
Add together the length of each wall.
[wall] + [wall] + [wall] + [wall] = wall length
For example, 16 + 16 + 20 + 20 = 72 feet.
Multiply the total length of walls by the total height.
72 feet x 9 feet = 648 square feet
Subtract 20 square feet per door and 15 square feet per window.
[wall] – [door] – [window] = square footage
For example, 648 – 20 – 20 – 20 – 15 – 15 – 15 – 15 = 528 square feet.
Divide the answer by 350 (the estimated coverage/gallon) for smooth walls; or divide by 300 for rough or textured walls, which soak up more paint.
[square footage] ÷ 350 = 1.5 gallons for smooth walls per coat
For example, 528 ÷ 350 = 1.5 gallons for smooth walls and 528 ÷ 300 = 1.76 gallons for rough/textured walls.
Add 10 percent for waste.
1.428 x .10 = 0.1428
1.428 + 0.1428 = 1.57or 2 gallons for each coat of paint.
Between paint drying in the pan and mistakes along the way, you’ll want to have this 10 percent cushion. After all, you don’t want to run out.