Does All Siding Require Flashing For Decks. Slip the back flashing under the siding at least 3 at the top and the sides. You need to make sure each material sheds water over the top of the material below without getting behind or under the materials. If you don t do this and the bottom of the flashing is in direct contact with the siding capillary attraction can pull the water up so it leaks behind the siding.
Install the kickout flashing underneath the first shingle photo 1. Properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck.
Each time you transition between materials say foundation siding brick windows doors etc.
You then attach the ledger board to the wall using approved through bolts not lag bolts. Though it will take some dismantling and perhaps a replacement deck board or stick of siding following the recommended practices for installed ledger flashing based on. There are at least a couple of good references for designing deck ledgers. If the deck appears to have life left in it and the lacking flashing was discovered during an annual inspection recommended then some repair should be on your to do list.
