I have red cedar log home and have had nothing but problems since built in 1992. the south side catches all the weather and I can’t keep any product on it to last beyond year. The logs just keep checking and sometimes just a small check but in winter when water is within this crack and when it freezes then it’s like another layer comes loose and then when it rains water gets through and travels inside and then runs into other cracks or comes to a knot and water weeps down inside of logs and le