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Check Ledger Board Flashing

4:11
5:37
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At 4:11 in

How NOT To Build A Deck - Ultimate Guide On Every Mistake You Can Make

What happens here

Check the ledger board connection to the house for flashing. The video points out a complete lack of flashing at the ledger board, which is the attachment point of the deck to the house. This is a critical mistake because it's the biggest spot where water can infiltrate the house, get trapped behind the ledger board, and seep into the interior rim joist, which is typically not pressure-treated. This leads to rot and significant structural damage to the house. Proper flashing diverts water away from the house's framing.

Goal: Ensure the ledger board has proper flashing to prevent water infiltration into the house structure.

Tools and materials

  • Flashing N/A — To prevent water infiltration
  • Ledger Board N/A — The board connecting the deck to the house