There was a leak in our utility shed area about 8' x 6'. The construction of the shed is plywood with stucco covering. The handyman that repaired the rotten wood installed plywood over the rotten wood between the 2x4 inside the shed, and caulked all the seams on the plywood walls and under the roof. Is this an acceptable way to repair the problem? Will the mold and mildew go away, or will the 2x4's continue to rot?