What is the specified height for end dams on windows and door flashings?

The specified height for end dams on windows and door flashings is 25 mm. This measurement is crucial in ensuring that water is effectively directed away from the openings in the building envelope. When end dams are constructed to this height, they help prevent water from entering the interior walls and avoids potential moisture-related issues such as mold growth, wood rot, or structural damage.

Using the appropriate height for end dams is part of best practices in building construction and waterproofing, helping to maintain the integrity of the building over time. By adhering to this specification, builders can create a more durable installation that effectively manages rainwater and other forms of precipitation. This understanding reflects fundamental principles of building design and construction designed to enhance the longevity and resilience of structures.