The minimum slope for coping, as a general rule, is no less than 10°.
Understanding Coping Slope
Coping is the capping element found on top of walls or parapets. Its primary function is to protect the structure below from water penetration. The slope of the coping is crucial for ensuring effective water drainage.
Why Slope Matters
Proper coping slope is essential for durability and aesthetics:
- Preventing Stagnation: A sufficient slope prevents water from pooling on the coping surface, which can lead to deterioration over time.
- Directing Water: The slope directs water away from critical areas.
- Protecting Cladding: According to the provided reference, coping should always slope inwards towards the roof to prevent staining of the external cladding. This issue is often visible on flat roof assemblies with parapets where coping slopes outwards.
The reference specifically states: "As a general rule, the slope of the coping should be no less than 10° to ensure that water does not stagnate above."
Therefore, a minimum slope of 10 degrees is recommended to ensure effective drainage and prevent water from sitting on the coping surface.
