What sets Everflashing apart from other deck-ledger flashings is the extra fin that covers the edge of the first decking board. This feature provides added protection against water-borne debris and allows the floorboards — especially those made of composites — to expand and contract without unsightly gaps. Everflashing comes in a 1 1/2-inch standard profile as well as a 2 1/8-inch profile intended for use with ledger spacers. It’s sold in stainless steel, galvanized G-185, and aluminum. A 10-foot length of G-185 costs about $17. Quality Aluminum Products, 800/550-1667, everflashing.org

or Register to read the full article.