Fireaxman
ArboristSite Guru
[Not going up anything with peeling bark, to paraphrase Sunrise Guy] ... is undoubtedly the best, safest advice, but there aint no money in it if yer hungry, and there aint no satisfaction in it if you just want to help somebody. I've been up a few with pretty lose bark that were still solid and hard as a rock from the surface to the core. ....
I posted this back in April 2007. June of that year a friend asked me to remove a dead pine for him "...before the hurricanes get here". I checked one out that had moderately peeling bark, decided it was sound, climbed it, and pieced it down to about 20 feet. It was "... still solid and hard as rock from the surface to the core ..." at that point.
But, when I cut the spar a couple of feet from the ground, I found it to be riddled with termites. I thought I had a picture of it but I cant find it tonight. Makes sense when you think about it. Subteranean termites start at the ground and work their way up. Top can still be plenty hard, and the bottom ready to go at any moment.
I got away with it that time, but by Grace, not skill. Since then I have adhered a lot more closely to Sunrise Guy's philosophy. Consider this a recant of my earlier post.