The primary difference between interior ($15 to $70 per gallon) and exterior paint ($25 to $60 per gallon) is the resin. The resins used in exterior paints are softer, making them resistant to flaking, chipping, and sun damage, whereas interior paint uses more rigid resin that resists marking and staining. Many exterior paints use a resin that causes outgassing, an emission of volatile organic compounds. Common to many manufactured products, it is what causes that “new car smell.” The outgassing from exterior paint resins can continue for many years, even after the odor dissipates. It is a major reason professionals don't use or allow homeowners to use exterior paints indoors. Louisville Home Painting
On average, expect to pay $0.60–$1.60 per square foot for exterior painting. The average for painting labor across the country is $30–$40 per hour before you pay for paint, painting supplies, location costs, and equipment. To get a very general estimate, though, painting contractors will take into account the square footage of your home and the number of stories and also factor in normal prep work. House Painters Louisville
Priming - $30–$40/hour for labor. Many of the materials above need to be primed, but not all do. If you’re changing paint colors from dark to light or light to dark, use a color similar to the top coat. That way you’re less likely to need extra coats over the standard two. Prime with a flat or eggshell paint. You can ask your paint store to add tint to the primer to match it with the top coat color. Hammer in exposed nails and spray them with a metal primer to prevent rust. House Painters Louisville
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