How To Lnstall One Peice Roof Flashing

Make corner flashing from step flashing.

How to lnstall one peice roof flashing. The roof deck flange of step flashings are to be fastened to the surface of each shingle in a position whereby the next course of shingles will cover up hide the flashing from view. Under the base part of the flashing use plastic roofing cement and finish attaching it to the roof with galvanized roofing nails. 4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles. Once you ve shingled up to the sidewall cut a piece of step flashing at a 45º angle from the outside corner to the bent seam.

Here is how you do it. This underlayment will direct any water that may get through the metal flashing onto the roofing felt. Proper installation of step flashing. One common method is to lay the edge metal under the eaves membrane and over the rake.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. If you have to replace shingles around a skylight examine the old flashing. Once even a small section of roofing cement fails you ll have a leak. Installing a roof plumbing vent is typically an easier task than flashing a chimney.

You continue this process around the length of the chimney cutting each step flashing to fit. Step flashings are to be installed one per course. Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge. Momentarily lift the boot and apply sealant to hold the flashing in place.

It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. But it doesn t work that way. Most flashing is 8 inches wide. Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint.

Then sink two nails in the wall near the top one on each face. Bend it down and back to sit flat on the corner. Install shingles as normal up to the base of the plumbing vent. Install from the bottom up lapping each piece on top of the lower one.

The top piece that bends around the chimney is left unattached.