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.
How to do step flashing on a roof.
Nail flashing to roof deck only.
Cover tops of step.
Lay an ice and water shield to the edge of the roof deck.
Nail through flashing into shingle do not extend flashing above top of shingle and.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
How to install roof flashing against a wall.
The remaining siding on the sidewall will overlap the step flashing and nail.
Wide and 2 in.
Place felt paper underlayment on the roof deck ensuring the underlayment turns up at the sidewall a minimum of three.
The key elements of the process include.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Here s how to do it right the first time.
Step flashings are to be installed one per course.
Longer than the shingle s exposure.
Cut step flashing pieces to be 10 in.
The vertical flange of the flashing is to extend up behind the adjoining siding.