I removed the old deck and found out that the previous ledger board was just nailed to the house. See pictures attached. The wooden boards you see are also nailed to the house, and the ledger board was nailed to those... https://i.stack.imgur.com/d9Lmg.jpg Now that I don't see the house rim joist, how can I attach the deck to the house ? Do I have to remove the house insulation ? Do I build just a free standing deck ? Thank you for your help !