Answer :
Final answer:
In a flat roof flashing system, the counter flashing is typically attached to the vertical surface. Its role is to create a seal and prevent water from entering the structure, protecting the integrity of the building.
Explanation:
**A) Vertical surface**
In a flat roof flashing system, the counter flashing is typically attached to the vertical surface.
Flat roofs often have parapet walls or other vertical features that meet the horizontal roofing surface. These vertical surfaces can be vulnerable to water infiltration, so counter flashing is used to protect the intersection between the flat roof and the vertical structure. Counter flashing is typically made of metal or other durable materials and is installed in a way that covers and seals the top edge of the base flashing, which is attached to the horizontal roof surface.
The counter flashing creates a watertight barrier, diverting water away from the intersection and preventing moisture from penetrating the roofing system. Properly installed counter flashing is essential for maintaining the integrity and water resistance of flat roof systems, as it helps to prevent leaks and water damage at the roof-wall junction.
Learn more about Flat Roof Flashing System here:
https://brainly.com/question/38730307
#SPJ11
