Pros And Cons of Various Types Of Roof Water Drainage Systems

In flood management, the installation of roof drainage systems is of great importance. If the water is allowed to accumulate on the building, it can cause structural damage to the building itself, leading to seepage, mould and other problems. To manage the roof drainage, there are different types of systems in place, installed according to preference and design restrictions imposed by different considerations. Let us take a look at the pros and cons of the different types of roof drainage systems:

1.Gutters  - The traditional roof drainage in most old homes is a network of gutters which are 

ideal for pitched roofs. The rainwater and storm water collected onto the roof drains into these gutters which is then channelled into a tank through downpipes. Gutters are an inexpensive solution which makes them an advantageous choice. However, they need to be cleaned regularly to prevent blockage as they can accumulate litter.

2.Scuppers - These are ideal for flat enclosed roofs, parapets and terraces. Scuppers are holes cut into the edges of the roof to drain the water through downpipes. To direct the flow of the water, rubber or metal seals may be fixed at the rim of the holes. The downpipes collect the water and drain it into underwater tank or reservoir. While scuppers do not need intensive maintenance, the downpipes must be checked once in a while to prevent clogging. However, they are unsuitable for flat roofs as the water cannot be drained effectively. 

3.Internal drains - If your house has a flat roof, internal drains are an inexpensive solution for roof drainage. Draining in the lower elevations of the roof, internal drains connect to a downpipe which drains the water to a tank or reservoir. Inner drains often have protective barriers to prevent debris from flowing into them. These pipes do not freeze in the cold weather either. A disadvantage with this type of roof rainwater drainage system is that in case of any damage to the pipes, it can lead to seepage and damage to the walls itself before they are replaced.

4.Siphonic drainage - One of the most sophisticated drainage systems for houses, these enable the roof drainage to function at full capacity. The siphonic roof drainage system does not use too many pipes and instead sucks the water from the roof through a combination of gutters and pipes.

When you want reliable roof rainwater drainage solutions for large and complex roofs, choose the Wavin Quickstream siphonic drainage system.


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