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How to fix moisture problems in shed?

I have a 16x44 omish wooden shed. The building is setting on road gravel , that we put down. I have insulated the walls and they have been drywall. I sealed the floors with sealant, and the sealant is still sticky, not quite dry,day 3. The mud in the corners of my drywall, is still not dry, day4. I still need to paint the walls,but was advised not to, right now. What to do? I do have a dehumitifier. I do have a heater and there is electric. All I'm doing now, is praying the room dries in the next couple of days. The only thing I haven't done is the ceiling. It's raw, but I do have a 3 foot vent in the ceiling, for air flow.
Puzzled Patty, November 2013
you need air circulation just a roof vent doesn't work on its own, you need to install vents in the walls at bottom and top to force circulation, cold air in at bottom warm air out through roof and top wall vents. Builders yard will give advice on type of suitable wall vents, they need to be insect proof vents or you get wasp/bees/flies nesting. This method works well on windy days but not so well on still days.

Bob U.k, November 2013