I have a friend that has a shake roof. The roof is approx. 30 years old. They had a company come out and give them an estimate to clean all of the moss and other debris off, replace any broken or rotten shakes, pressure wash it on a low setting, and then reseal it with linseed oil. The guy told them if they did all this they would get another 20+ years and the shakes would look like they were put on recently.
I have only been dealing with shakes for 10 years so I am not sure if this guy is blowing smoke or what.
I ran a project that consisted of about 26 building that were built in the 70’s. Each building had approx. 70 squares of shakes. They were in pretty bad shape. I gave my friend my opinion on the roof based on my experience.
Do any of you guys have any info. on this?