New deck joists hangers were installed directly onto older wood siding, without the installation of a proper bolted 2x deck ledger at a recent home inspection in Anacortes.  The most common point of failure for deck systems is at the interface between the deck and home.  For this reason, a bolted deck ledger is advised and the deck joist hangers are attached to this instead of thin siding.  I recommended further evaluation and repair by a qualified contractor who will likely install a new deck ledger underneath the existing deck joists to the whole deck doesn’t need to be dismantled.