Under general guidelines, to paint a 2500 square foot house, you will generally need approximately 18 to 20 gallons or 68 to 75 liters of interior paint and 4 gallons of interior trim paint for approximately two coats. Therefore, an average 1200 to 1500 square foot hiking house would require 12 to 15 gallons of good quality paint for approximately two coats. This number also includes coating paint, overhangs, and ceiling panels. Standard size doors measure approximately 20 square feet.
Add up how many of each are in your project space and subtract those square feet from the square footage of wall painting. Divide the new final number by 400 to get the best estimate of how many gallons of paint you'll need for a coat on your walls and ceiling (minus any doors and windows you're not painting). Skirting boards, windows, doors, and ceiling moldings in a room are usually painted with a different finish or color than the walls and ceiling, so you can calculate your molding painting needs separately. Applying the primer first helps the paint to adhere properly to porous or unpainted surfaces such as new drywall, allows for even application of paint, and covers stains.
If you're doing a dramatic color change, a primer tinted in a similar shade to paint makes it easier to cover. Learn more about choosing the right primer for your project. Per gallon, so you'll need a little more primer than paint. Take the total area above and divide that number by 300 to get the minimum gallons of primer you will need for one coat.
One gallon of any BEHR paint is enough to cover 250 to 400 square feet of surface with a single coat. A gallon can of paint will cover up to 400 square feet, which is enough to cover a small room such as a bathroom. Interior House Paint In general, you will use more interior paint because there is much more surface area inside a house than outside. The paint is expensive and you don't want to overbuy (paint stores will not refund a gallon of already tinted paint).
The main thing to worry about is painting when it's too cold (I think they say never paint below 38 degrees farenheit). Many people remove the arm in the last part of the sweep, which creates an uneven spray job and a build-up of paint in the middle. BEHR paints are available in quarts for painting a small area and in five-gallon buckets for a very large area. While all paint jobs are different, there are some variables that are sure to affect the cost of your project.
However, sometimes you don't have time to make 2 trips to the paint store and you have to take a leap of faith. We recommend buying only about 80% of the estimated paint you need at first and then buying the rest when it's almost finished. Gather how many components of each component are the size of your project space, and then subtract that amount from the square footage of wall painting. Anyone who has their first interior painting project for a house has been left in the paint aisle wondering how many cans they need to bring home.
When you are very close to the finish, you will undoubtedly have a clearer idea of what a domestic painter should actually do. Using the length of each wall as a reference, multiply the number by the height of each floor and ceiling to calculate how much paint is needed. Many people assume you'll need twice as much paint, but since the first coat covers many porous areas that would normally absorb paint, the second coat uses much less paint.