Aluminum Trim When it comes to vinyl siding, the hard part is getting the trim right. Fancy vinyl accessories are okay for new work, but for retrofits, they're too expensive and don't always work. Plus, trimming old, out-of-whack openings and covering the eaves will kill your profit if you can't get a rhythm going. When other kids my age were out shooting marbles, I was learning how to do roofing and siding work with my Dad and brothers. After working together on hundreds of jobs, we've figured out how to produce durable aluminum trim details using the fewest possible steps. The trick is getting everything on the house as uniform as possible before bending any metal. That way, you can mass-produce
