Flashing Deck To Siding

Start by making an outline on the siding where you want to position the ledger board.

Flashing deck to siding.

This keeps water from wicking along the bottom of the ledger and getting behind the siding. The irc doesn t provide prescriptive measures for flashing other than the minimum thickness for metal flashing 0 019 in. I would remove the old siding that was behind the existing ledger to about an inch above the deck surface. Amerimax 14 in x 30 ft vinyl roll flashing.

Pry the siding out near a nail then push the pry bar against the nail as you partially tap the siding back in. That should pop the nail head out far enough so you can pry it out. 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.

Tearing into siding is all but inevitable if you build. Make the outline large enough to include space for the deck boards on top the ledger and any trim boards on the sides. My instinct is to replace the deck and eliminate the ledger altogether add posts near the wall and leave a big gap between the end board and new flashing tucked under the siding. Window and door cap 1 25 in x 120 in x 1 56 in aluminum z flashing.

If nails are in the way pull them out. For pricing and availability. Item 3807 model 5504900120. This flashing needs to extend up at least 2 or 3 inches up under the siding above the deck.

Install z flashing behind the bottom of the ledger and over the siding below. Union corrugating 14 in x 30 ft vinyl roll flashing. Keep in mind the bottom of the upper siding should be at least two inches above the flashing or the decking that s near the house. Gap between the end of the ledger and the ends of siding and fill it with high quality exterior caulk to keep water from leaking behind the ends of the ledger.

Flashing consists of metal which is durable enough to be exposed to sunlight and mechanical wear and tear plus peel and stick membrane like vycor grace construction products.