Started the aluminum skin over the air dam. A friend bent the pieces up. I'm reusing the margin trim from the upper wall perimeter. The rest of the box has it so I'm adding to the air dam for consistency. It's an extrusion with holes every 4 inches. I'm dry fitting it all together and will add mastic and/or caulking on final assembly. Nothing worse than slimy, caulking all over everything while you try and hold it all still and drive a screw home. Metal roofing screws with a rubber gasket as per everywhere else on the exterior.
Taped in place first, then cut the margin trims to size. Drill through the skin into the wood frame and drive home a zillion metal roof screws.
