Directions for Interior Painting Interior painting is as important as outside painting. It is now possible to paint at any time of year with the arrival of odorless paints. Formerly, interior painting was primarily done in spring or fall. It was possible to open the windows to enable air to circulate the space. Open windows allowed dust to enter the room, which could have a destructive result on the final painted surface. For the best in home painting reach out to the experts at SQP Painting Lynnwood. An interior painting job ought to be 50% preparation and 50% paint. Don't rush to prepare the surfaces, even if you wish to utilize the roller or brush. You'll soon be back utilizing the roller or paintbrush in a couple of months if you don't prepare the surfaces properly.