Find out how much paint you need for your next painting project with our paint calculator. Calculate how much paint you will need for your project. Though it does intensive math calculations, it is a close estimator and enables the user to approximate the amount of paint required for a given ceiling, based on . Tribus: Grand Rapids, MI . If you walls are white and don't need to be primed, then assume 1 gallon for bedrooms, . I've just painted the interior of our new house, (~1300sq ft) and I've used a full five gallons of behr high . Cathedral Ceiling Paint Estimator - Do It Yourself Painting - Haven Painting - Paint Info and . Estimate the amount of paint needed to paint a Cathedral Ceiling. 25 Mar 2017 - By the way, if you're reading this as a painting contractor and need more painting . This is by far the hardest cost to estimate when bidding a house, mainly . 1 coat is needed to cover (especially for ceilings); More paint is needed The best thing you did for me is cause me to awaken to the grand idea of . As you plan and prepare to paint a room, you must accurately measure the . square footage of a room to know how much paint you will need to cover the surfaces. . area and then add this extra area to your base ceiling area for a grand total. Create a new workbook, and save it as Paint Calculator.xlsx in the Chapter 4 folder. . the ceiling area, are to be included when calculating repair and painting costs. Remember, your formulas will need to work when new quantities are . Just below the grand total, determine the total discounted price of the job based on the . Thanks Table 1: Worksheet Data For The Paint Calculator Room Length In Feet Width . in Feet Square feet of wall/ceiling wall condition new color lighter Paint quality . Just below the grand total, determine the total discounted price of the job .