Troy insits on using hard wood for the fence when soft wood would be easier to cut and install. What might this say about Troy?

Hard wood is necessary for outside work. Soft wood, like pine, wouldn't have lasted as long. I believe this illustrates Troy's desire to do things right, so they would last.

Troy: I know what I’m doing. This is outside wood. You put pine wood inside the house. Pine wood is inside wood. This here is outside wood. Now you tell me where the fence is gonna be.