A sill plate adapted to support drywall above a floor surface to prevent the formation of mold in the drywall. The sill plate has a base section and a first wall associated with the base section. A first shelf is associated with the first wall. The first shelf is adapted to support drywall. The sill plate may also include a second wall associated with base section where the second wall is opposed from the first wall. The second wall may include a second shelf associated with the second wall. Each of the first shelf and second shelf may extend along a plane parallel to a plane passing through the base section. Drywall may rest on the first shelf prior to being affixed to vertical studs extending from the sill plate.