It is helpful then to outline your wall with 2 or 3 inches of primer around the edges and frames before priming entirely the wall. Such a technique should help create a professional look by eliminating drips and splatters. A handheld brush is the best choice for this. For the actual primer application, roller paint can provide extra convenience. Spread the primer pain in V or W-shaped strokes. Once the primer has dried, sand down the bumps and wipe the walls down with a damp sponge.
Painting exterior windows depend on the size of the window and the number of panes. To calculate the price for windows larger than 15 sq. ft., add 1’ to each side of the window and then multiply width x length. Add two sq. ft. for each window pane for painting the mullions, muntins, and sash and then multiply your total sq. ft. by $84/100 sq. ft. So a 4’ x 4’ window with 4 panes will come to a total of 44 sq. ft. x $84/100 sq. ft. = $37.
Most of a projects price is the cost of labor at $25 to $75 per hour. However, most contractors bid out based on the entire project which includes all work hours. Hourly rates are only useful if your pro asks to do the job as “time and materials.” However, be wary of this pricing structure, it usually shows the contractor is uncertain how long the project will take.