Yes they do. Any wood product, no matter what species it is, when exposed to the elements of nature will have to be taken care of to insure long life and to maintain the beauty of the wood.
Applewood Log Homes utilizes a Sashco product called Transformation with excellent results. Homeowners report that their home is just as beautiful as when it was constructed due to the periodic application of Tranformation.
Transformation is a very user-friendly pre-mixed product and can be applied professionally or by a homeowner with a sprayer or with a brush. It has a proven long life span and mainteneance is minimal with years of beauty between applications.