Pull the z bar metal flashing off of the board and apply a bead of roofing cement around the perimeter of the flashing.
How to install z flashing in roof.
Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
Complete the installation of the first horizontal row of t1 11 siding following standard construction practices.
But it doesn t work that way.
Once even a small section of roofing cement fails you ll have a leak.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
Cut z flashing with tin snips at the edges of the structure and overlap the flashing 6 inches if you have to install more than one piece.
Reposition the flashing to the board and tack it into place with a nail.
Install the first length of z flashing.
Next place your vent flashing on top of the membrane.
Begin at either end of the wall and set the level middle.
How to install z flashing on t1 11 siding.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.