Exterior walls are scrubbbed thoroughly to remove algae, fungi and mildew using steel wire brush. Mild solution (like bleaching powder in water) can also be used to get rid of mildew and algae from the walls. Walls need to dry completely. High pressure water jet can also be used to wash away dirt and any old paint flakes///It would be a lot easier to identify whether or not it’s time for a new exterior paint job if your next-door neighbors painted their home. Their nearby fresh coat of paint would naturally put the spotlight on the faded quality of yours. There could be a lot more important reasons for painting than keeping up with the Joneses or (if you are selling) improving the chances that your exterior will attract buyers,/ The paint on your exterior trim, walls, and other surfaces will protect your home from extreme weather and excessive moisture, which can lead to wood rot and other damage. If your home has permanent marks or stains that are putting a blemish on the looks of your home, exterior paint can usually cover them. A great way to give your home a high-impact make-over is with a high-quality paint job, particularly if you carefully select paint colors that create the whole new look you’re going for. Giving your home a beautiful exterior paint job is a money-saving option, especially as compared to making structural modifications. The overall real estate value of your home is increased with a fresh exterior paint job, though an interior paint job may be just as important for that purpose.