Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Sidewall flashing shingle roof.
Sidewall flashing sidewall flashing is applied when the side of the roof butts up against an adjacent wall.
Each additional rain adds more water and before you know it you ve got rotted wood.
Once even a small section of roofing cement fails you ll have a leak.
The flashing needs to be installed before installing the roof shingles the metal flashing is formed with a hook edge and cleated on 12 centers the flashing extends up the wall at least 4 the flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
Butyl tape should be applied where the foot of the flashing attaches to the roof.
Apply drip edge and roof underlayment over the roof deck and continue lapping up the sidewall and over the water resistive barrier in this case rigid foam insulation a minimum of 7 inches figure 2.
Epdm flashing tape with a butyl adhesive backing will help.
How to install sidewall flashing and kick out diverters on homes with rigid foam insulation sheathing.
Vent flashing done right to prevent leaks back up roof vent boots with flashing counterflashing and proper shingling.
