We are in the process of buying a log house in Southern California. It is a log cabin that has unfortunately been painted on the exterior and interior. We have heard that exterior painting causes rot in the logs. Is there any type of paint that does not cause rot in the logs? We are looking into walnut shell blasting to remove the paint, but it is very expensive, and we want to know if there is a possibility that that exterior paint is ok to just fix and maintain, or if it will defnitely cause r