Also prime the ends of adjoining boards. This step pays off by slowing the moisture penetration that can lead to peeling at the joints. If the new siding is redwood or cedar, buy a special “stainblocking” primer. Both of these woods contain natural chemicals (tannins) that can bleed through paint, causing brownish stains. A stain-blocking primer will seal in the tannins.

Calculate your costs.Having an idea of the cost of paint you need to purchase will help obtain quotes from a contractor. “Paint coverage is based on how many square feet of surface one gallon will cover,” says Bunting. “Most paints will cover approximately 400 square feet. Tally this by multiplying in feet the wall’s height by its width, minus windows and doors.” Determine how much paint is needed to complete the project. “To calculate the cost of a project, factor in the day rates, the size of the property, any architectural features, and the paint finish needed,” says Rance.

Thorough preparation is essential to ensure a good finish. Contractors might have to fill cracks or holes and remove old paint if it is badly worn, peeling or flaking. They remove all paint and apply a suitable primer to the bare surface. If the existing paint is in reasonable condition, they clean it and rub it with abrasive material to provide a key for the new paint. On new surfaces, such as bare wood or fresh plaster, they apply a suitable seal, followed by a primer coat. House Painting Denver CO

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