To properly attach a deck ledger, follow these guidelines: Drop the level of the new ledger enough to allow at least a 2-in. Install metal flashing (drip cap) over the entire length of the top of the ledger.
Properly installing a ledger board for your deck is one of the most important structural. you how to install flashing and bolt the ledger connection to the house rim.
Attaching a Ledger Board for Your Deck. For more protection against snow entering your home, build the deck a step or two. Proper flashing to a house frame.
5 Install ledger between rim joists; fasten to house wall with 3-in. decking screws. 6 Secure ledger to sill with Â½-inch-diameter lag screws; drive the long screws .
The ledger must be properly attached to the house to support your deck joists. Methods differ depending on house construction materials.