Once even a small section of roofing cement fails you ll have a leak.
How to lnstall one peice roof flashing.
The top piece that bends around the chimney is left unattached.
Place the flashing or boot onto the plumbing vent so the base is resting on shingles.
Under the base part of the flashing use plastic roofing cement and finish attaching it to the roof with galvanized roofing nails.
Then sink two nails in the wall near the top one on each face.
One common method is to lay the edge metal under the eaves membrane and over the rake.
Installing a roof plumbing vent is typically an easier task than flashing a chimney.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
Once you ve shingled up to the sidewall cut a piece of step flashing at a 45ยบ angle from the outside corner to the bent seam.
Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint.
If you have to replace shingles around a skylight examine the old flashing.
Step flashings are to be installed one per course.
You continue this process around the length of the chimney cutting each step flashing to fit.
Most flashing is 8 inches wide.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
Install shingles as normal up to the base of the plumbing vent.
4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles.
Proper installation of step flashing.
Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge.
Install 6 in wide strips of a self sticking waterproof underlayment.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
But it doesn t work that way.
Make corner flashing from step flashing.
This underlayment will direct any water that may get through the metal flashing onto the roofing felt.
Momentarily lift the boot and apply sealant to hold the flashing in place.
Here is how you do it.
