Deck Siding Acting As Flashing

Cut it for flashing and you structurally damage the wall.

Deck siding acting as flashing.

In those cases often the flashing is placed to the t 111 and then counter flashed and sealed. Learn how to inspect the proper installation of the deck ledger board flashing as a certified home inspector. Relying on sealed counter flashing isn t ideal but neither is marrying your cladding to your braced walls in one product. If nails are in the way pull them out.

Start by making an outline on the siding where you want to position the ledger board. Then slip flashing behind the siding covering the top edge of the ledger. That should pop the nail head out far enough so you can pry it out. Make the outline large enough to include space for the deck boards on top the ledger and any trim boards on the sides.

Never put horizontal siding in direct contact with any horizontal material. You may need to pry out siding first. Cover the top edge of the vertical leg of the flashing with waterproof tar paper or house wrap. Pry the siding out near a nail then push the pry bar against the nail as you partially tap the siding back in.

A simple metal or plastic cap flashing is probably adequate to flash a deck ledger in a dry climate while the 3 layer system described in this video is suitable for high rainfall and damp climates. Slip the back flashing under the siding at least 3 at the top and the sides. The level of water resistance you need to achieve when flashing a deck ledger will depend on the rainfall and how dry your climate generally is. Installing z flashing to prevent water from seeping behind the deck s ledger board and rotting the board and the siding the flashing must cover the top of the ledger board and bend over the edge.

Often the t 111 is acting as the braced wall panel. This flashing needs to extend up at least 2 or 3 inches up under the siding above the deck.