Get this Amerimax Home Products Galvanized Steel Deck Ledger Wall Connector Flashing – White delivered onsite. Fits over leger board and behind siding to protect from water damage. Made of painted steel construction for durability with a factory baked-on finish for low maintenance. Overlap joints from 4 to 6 in. for moisture protection. For waterproof installation, use FlashMate professional grade sealant (not included).