Flashing Deck Ledger Board Vinyl Siding

Step 2 cut away the vinyl siding.

Flashing deck ledger board vinyl siding.

When you install the floor joists you ll need to make some small cuts in the flashing to allow the top of the joist to line up with the top of the ledger board. The irc doesn t provide prescriptive measures for flashing other than the minimum thickness for metal flashing 0 019 in. Then slip flashing behind the siding covering the top edge of the ledger. 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.

Measure the distance between floor joists the height of the sill plate and add 1 2 inch for flashing to vent moisture from the ledger. The nails should not be nailed tight to the flashing. Make sure the house wrap is long enough to cover over the top of the drip cap. Snap a chalk line cut out the siding and tack up the ledger board.

Properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck. Cut a length of metal z flashing with tin snips to cover the entire length of the ledger board allowing an extra 1 2 inch to overhang each end. You should allow the flashing to move from side to side in the slotted hole provided. Slip the top edge of the flashing under the siding.

Nail the z flashing over the top of the ledger tip when nailing your vinyl z flashing to the house be sure to nail every 12 along the house with roofing nails. Window and door cap 1 25 in x 120 in x 1 56 in aluminum z flashing. Make the outline large enough to include space for the deck boards on top the ledger and any trim boards on the sides. Start by making an outline on the siding where you want to position the ledger board.

Next you ll want to install a piece of metal drip cap flashing above the ledger board.