Upon inspection of this cantilevered concrete and flat membrane awning , I discovered that the taper is incorrect and the front curb is not tall enough for sufficient splash guard and overtopping prevention. This is a fairly unusual shape and size and a diamond pattern is recommended for maximum water management along with a built up curb at the front to act as a splashguard and prevent water from over topping when it is filling rapidly. It is recommended that the customer hire someone to install underground drain pipe along front of building at flower bed to lower grade.
Ponding and Overtopping Water Problems
- 1Bad TPO seam welds with buildup
Build up at the edge of a welded seam on a TPO roof membrane is a sure sign of bad welding. These will quickly turn into leaks if not leaking at the very first rain.Go To Pin - 2Ponding water over entryway
Here, you can see that water sits in this area with no hope of draining. The area is shaded and low, pitched improperly. Taper corrections and built up curb is recommended as well as adding drainage
Ponding water and low curb make for bad conditions for over topping the edge of the roof
Go To Pin - 3Insufficient taper
If tapered properly and with a built up curb, we can channel the water to both ends and into a scupper drain attached to a downspout. Recommended that drain pipe is added to this system to a lower grade
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