It is because the intersection between the roof and the exterior wall covering is not properly installed and flashed.
Walls between roofs.
A sidewall is a junction between a wall and a sloped portion of a roof.
Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks.
Continuity of the control layers between roofs and walls is the whole enchilada.
The horizontal part of the flashing will vary depending on the type of roof covering material.
If there were no flashing against these walls water could slowly drip into the crevice between the wall and the roof and potentially into the home.
The purpose of your home s roof is to protect the entire structure and you from weather.
This oversight has been going on for years and costing property owners many thousands of dollars.
To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width.
A gable roofis a type of roof design wheretwo sides slope downwardtoward the walls and the other two sides include walls that extend from the bottom of the eaves to the peak of the ridge.
Like rain snow sleet wind and hail.