Preparation is certainly the most time consuming part of a spray painting task. However it is also the most essential part. This is because when spray painting, you want to avoid paint particles diffusing onto areas of the room that you do not want to paint. This means you need to mask any area or object you do not want painted. You can do this with: a masking kit, dust sheets and masking tape. Floors, skirting boards, sockets, doors, door frames, light switches, skinks ,windows and frames and any single surface you do not want painted NEEDS to be masked. You should remove all furniture from the room. To mask properly ensure strong and adhesive masking tape is used and there are no tears in your masking sheets.