To prevent rainwater from entering your building, you have to invest in the right roof drainage system. Without proper drainage, you will have stagnant water on your roof, which will eventually damage your roofing materials such as roofing material and membranes. The water trapped on your roof will, sooner or later, start seeping through the roof and cause flooding in the building.
So, as you look for the most sophisticated and visually appealing roof design for your commercial property, make sure you have a flawless roof drainage system. Here, we discuss a few essential things you have to consider when designing and installing your roof drainage system.
Amount of Rainfall and Wind
Knowing the amount of rainfall and wind your area gets is essential because it helps you install the right drainage system. It will be a waste of money and time to install a roof drainage system that doesn’t match the rainfall area. You also need to understand how the wind will hit different sections of your roof drainage system before installing it.
Sizes of Gutters and Downpipes
Ensure that the sizes of your gutters and downpipes match the flow rate of water. A functional drainage system should have gutters and downpipes big enough to handle the largest amount of rainfall as it pours.
The water build-up on the roof depends on the angle of your roof. The steeper the roof, the less water you will have to deal with. So, if you have a flat roof, you need to install a drainage system that can handle large amounts of water. Otherwise, you will always have large pools of water stuck on your roof. But if your roof has a severe slope, you may not require doing a lot of drainage work.
You need to ensure that each primary drain in your roof drainage system has a secondary overflow drain. These overflow drains are important for preventing water build-up. Also, each of these drains should have its pipe to allow water to continue flowing smoothly without any point of convergence.
Space Your Primary Drains
It is important to space your primary drains to allow maximum coverage. If possible, the drains should 200 feet away from each other. They should also be placed towards the center of your roof, where the roof’s angle allows rainwater to collect.