I have a home built out of Structured Inslated Panels (SIP) with quarter-log siding that is (I believe) cedar. I have no way of knowing what if any treatment the exterior has had in the past, but I have noticed that just in the year I have owned the house, the extreior has darkened considerably. I want to refresh it to the nice, honey color it had when it was originally built, but am unsure how to proceed. Where it is panels and not real logs, I am assuming it will be a different recommendati