Attaching a deck to your house creates the potential for rot, not only to the ledger board that you attach to the house to support the deck, but to the house framing. Builders avoid rot by installing flashing along the top edge of the ledger board, but even when this is done according to accepted practices, it creates a pocket for debris to collect, and this can rot the decking board closest to the house.

Whether you have wood, vinyl or aluminum siding, you can avoid this by oversizing the ledger board and creating space for water to run off.

How to Use Flashing Between Vinyl Siding and a Wood Deck. Vinyl or aluminum siding. Install Z-flashing along the top edge of the ledger. Apr 20, 2011 Duraflash Product Installation Reece Ltd. Benz Wis Keygen more. Installing Deck Flashing. Vinyl Deck Installation.

The IRC code requires that you install approved corrosion resistant flashing in a shingle fashion in a manner to prevent water into the wall cavity. The flashing shall extend to the surface of the exterior wall finish.

Corrosiion resistance is defined as the ability of a material to withstand deteriorization of it's surface or properties when exposed to it's environment. Deck flashing creates a barrier to prevent moisture from entering the house in the openings you create when attaching your ledger board connection. You can buy flashing either in roll form or in rigid Z or L shaped 10' sheets made of stainless steel, copper or vinyl material. Never use galvanized steel or aluminum flashing in contact with an acq pressure treated wood ledger board because it will corrode. Vinyl flashing is the least expensive option but may not work as well in area with extreme temperature fluctuations.