Before the scrubdown, protect nearby plants by misting their leaves and saturating the surrounding soil with water, pulling them away from the house, and shrouding them in fabric drop cloths. (Plants will cook under plastic.) Lay more drop cloths along the base of the walls to collect any falling paint debris. Walls should be wet down before getting scrubbed, then washed with a gallon of water mixed with 1 cup chlorine bleach and 1 cup of either a concentrated, phosphate-free cleaner, such as a trisodium phosphate (TSP) substitute, or Jomax House Cleaner. Working in sections, from the bottom to the top, will avoid streaks. Be sure to rinse walls well before the solution dries. Wood siding and trim should be ready to paint after a day or two of dry weather.
The time needed to complete an exterior paint job varies depending on the size of the home, the condition of your home’s exterior, the weather conditions and type of paint used on the job. An average project lasts 3-4 days, while a complex project may take a week or more. Additional time may be needed to fix loose or damaged siding or add primer to areas without coverage. Your painter will provide a timeline that explains how long the project will last and will schedule the job to avoid inclement weather.