It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.
Flashing behind siding.
Flashing helps prevent any moisture which can collect due to condensation or small gaps in the siding that flows downward from infiltrating behind the house wrap where it can do damage.
Start by making an outline on the siding where you want to position the ledger board.
When slipping the flashing under the siding be sure to slide the flashing to the left or right of the ledger by at least 2.
Continue installing the z flashing at the top edge of the siding panels across the full length of wall.
Make the outline large enough to include space for the deck boards on top the ledger and.
Position the flashing lengths as defined in step 2 overlapping the ends a minimum of 2 inches onto the previous flashing piece and securing the flashing with 8d nails at each wall stud.
Therefore the upper piece of wrap or flashing should always overlap any lower pieces.
Slip flashing under siding.
Slip the siding up and around the door.
Even if the roof has been properly flashed against the sidewall this one hasn t water can still run down the side of the house and behind the siding causing rot.
When it comes to flashing siding corners many builders simply use a 1x wood corner.
Note that the flashing does not go up high enough to hit the underlying nail but is still high enough to end up behind the next row of overlying siding.
Snap a chalk line cut out the siding and tack up the ledger board.
Even though a hive nestled inside the wood aluminum or vinyl siding is hard to actually reach these are in fact some of the easiest and safest types of nests to get rid of because they require no contact.
However in most instances step flashing should be installed behind siding.
The solution to rotting sidewalls is a small piece of bent metal called a kickout flashing at roofing suppliers which simply directs all that water away from the wall.
In certain instances flashing may need to be installed on the exterior of siding.
Slip flashing under siding.
And when those corners.
Then slip flashing behind the siding covering the top edge of the ledger.
Cut the z flashing as needed using metal snips or a.
But unlike fiber cement siding wood is almost sure to rot.
Once the joint is flashed it really will not look much different than before it was flashed but water cannot get behind the siding.
I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof.
