bought a 9 yrs.old log home that had been stained with cwf-uv(redwood) every 3 yrs. and never cleaned or washed. we have owned for 6 yrs. and are going to restain. We appliedbleach and pressure washed. Some natural wood showing most of house still looks stained. Does it matter? What is the best stain?Does it need to be corn blasted?can you use a stripping agent?Can we just restain? Painter wants to strip with pressure washer and just stain over.I need log help in N.C.