I have just purchased an old Victorian Home with a plaster exterior wall finish. There are some hair line cracks in the plaster. From your articals I have a good understanding of how to repair the cracks. Thankyou. The orginal owners painted the plaster some time ago and it is pealing. I plan to power-wash the walls first to remove the paint then after drying...paint. Do I need to prime the plaster first ? Will power-washing disturb the plaster ? What type of paint should I use ? I would really appreciate your input.