I plan to have the house stripped and all flashing removed and replaced this summer, so that will probably help somewhat. The roof will also need to be replaced within a few years and that will be the time to see what's going on above the logs in the ceiling. There may be no insulation up there for all I know. This house was built by a local and his buddies, and I know corners were cut and deals were made. I have already seen how they cut corners on the septic drain field and dumped a bunch of clay in there. Being a log home, it will probably never be as tight as a modern wrapped stick-built house. It has seen these icicles for 20 years now with no damage to the roof or wall structures so I haven't been super concerned about it. The deck is another story. The ice build up on the deck is trashing it.