Wood is great for exterior trim, but Mother Nature can wreak havoc on its structural integrity. So Anderson opts for Fypon polyurethane molding instead, calling it “an economical solution for trimwork,” particularly in historic districts. Available in more than 6,000 interior and exterior varieties, Fypon trim pieces are lightweight and virtually maintenance-free. They come double-primed and, like wood, can be sawed, nailed, or glued. Fypon, 800.446.3040; www.fypon.com.