JimboM said:
I have a lot of clay around here, but my wood is stacked on clean sandy fill we had brought in twenty years ago to increase the parking area and to slope a steep bank to stop it from eroding. Where there is no grass, the water basically falls right through when it rains. If I stacked it directly on the heavy clay soil down the bottom of the slope, it would probably punk out on me after a year or so. I either location, I feel all I need is pallets to keep it from direct contact. I can't see why a few more points of RH at the base of the stack would slow anything down, at least in a way that was noticeable inside a stove.
I'll try to get out there today and take very accurate reading of both temperature and RH with my sling psychrometer, both at ground level and at 4' above. It rained a bit last night, so this might be a good time to measure them. I'm betting there won't be a difference worth worrying about.
