Thanks for reaching out. Deteriorated outer log siding is one of the most common repairs we handle, and it’s very fixable if caught before it spreads further into the structure.
Since cost depends on how many logs are affected and the scope of the damage, the next step is to get you an estimate. You can request one from American Log Restoration here:
logrepair.com/request-a-log-home-repair-estimate/
or call them directly at (877) 788-5647