I am drywalling my unheated, partially-below grade exterior garage. A four-foot tall concrete wall runs along the parts of the garage that are below-grade.
Above the concrete walls are 2x6 wood framed walls. The wood is anchored to the concrete and separated with a sill gasket. There is a 1/2 inch ledge so the drywall will be flush with the concrete.
What can I do to transition between the drywall and the cement? I don't want a gap, and I suspect the drywall shouldn't be in direct contact with the concrete.