The system rests flat on top of the parapet.
Flat roof parapet coping.
Many buildings have flat roofs in certain areas specifically for air condoning units and etc.
At the edge of these roofs parapet walls are commonly found and are vulnerable to leaks if not flashed correctly.
Some plain parapets come with an added coping or corbel to help bear structural load but most of them are simply flat extensions of the wall below the roof.
Flat coping offers a complete and attractive finish to any parapet wall.
This unique type of cap is designed to cover the top of parapet walls.
Courtesy of max baker and the national research council of canada.
If you didn t get it right you concentrated the stresses at roof edges and you could suck in a parapet or tear or rip a membrane at the parapet photographs 3 and 4.
Roof membrane temperatures ottawa canada summer day.