this summer my son and I scrapped off all the paint on two sides of our 100+ year old house. It is now October and we are still in the process of sanding and repairing the siding prior to painting. All good but it's October and while we probably will get a few more good days of painting I was wondering if putting on a water-repellent preservative as mentioned in Brad Lernley's article "A Pro Confides His Best Tips for Painting Exteriors" would be best at this point and prime / paint next season ?? your advise would be much appreciated, Thanks !!!