After you have done the multiplication, subtract about 40 sq feet per window, and about 60 sq feet per door. Divide by 400 (interior paint covers 400 sq feet per gallon). The number that remains, is how many gallons you will need. If doing multiple wall colors, then you should do this process for each room (or sets of rooms) with a particular color. House Painting Denver Colorado If you’re considering adding fresh paint to the exterior of your home or garage, don’t worry about vinyl siding: it can be painted! Be sure to start with clean, dry siding (this may require pressure washing and good weather). Or, you can wash the siding with soap and water instead. But the main thing is to start with a clean, dry surface so the paint won’t peel. Be sure to select a color for the paint that’s not darker than the existing vinyl color: a darker shade will allow the siding to heat up more than it was designed to withstand.
In addition, paint features such as mold and mildew resistance are important cost factors. Many mold-inhibiting bathroom paints, for instance, cost substantially more than ordinary latex-acrylic paint—sometimes close to twice the cost. Also, paints that come with warranties from the manufacturer may be more expensive depending on the length of the warranty. (A two-year warranty is standard.) House Painting Denver Colorado Determine the coverage area for each color and estimate the number of gallons you'll need for each. For odd walls with angled ceilings, make your best guess. If you're not comfortable doing this, measure the wall at its highest height and multiply that by its width. Now subtract the lowest height from the highest height, multiply that number by the width, cut that answer in half, and finally subtract that new number from the original height by width. That should give you the wall area. House Painting Denver Colorado