I had e-mail you a couple of weeks ago with questions but now 1 is answered..no power washing. Our 18 yr old cedar log home needs help. Some of the logs seem a little ”tender” and have lost all their sheen..cabin looks dull.The original owners used Wolmann’s..I can’t find that here and wonder if we could use Sikkens Retol..no color just natural top coat. We have some mildew..how do I remove that if we can’t power wash? We love our home and want to make it look so much better. We live o