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Roof Drains 101: What You Should Know

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Roof drains allow any water on the roof to drain out and away from your home's surface in order to protect it. They might seem simple, but are actually a very important aspect to your roofing system. Here are some things to know about roofing drains and tips for choosing the right ones.

How to Choose the Right Size

One common mistake made when getting roof drains installed is not choosing the right size. There is not a standard size of drain for all homes. You need to figure out the size based on the average rainfall in your area and the size of your roof. You need larger drains and a higher quantity of them for a large roof located somewhere that gets a lot of rain. However, if you have a modest home and live in a relatively dry area, your drains will be much smaller. If you're not sure about the size, contact a roofing contractor.

Factors to Consider When Choosing Roof Drains

The next decision to make is deciding on the variety of roof drain. There are many different types so you will need to consider certain factors. Aside from choosing the drains based on rainfall in your area or the risk of natural disasters, you also need to think about your roof pitch and the overall style of your roof. Some drains work better with a flat green roof, while others are meant for high-pitched roofs. The materials on your roof might also make a difference. A roofing contractor is able to guide you in the right direction.

Types of Roof Drains

There are three basic types of roof drains you are going to choose from, including flat roof drains, siphonic roof drains, and green roof drains. If you have a green or living roof, you need a special green roof drain. This is because you have more drainage needs when watering the various plants and vegetation on top of the roof.

For flat roofs, you will use a flat roof drain. This also works for roofing styles with low pitches. These will be connected to your roof's gutters, which helps to keep the water away from your home and only going into the gutters and down the downspouts. It is important to always keep drains and gutters free of obstructions. For higher pitches and slopes, you will use a siphonic roof drain. This actually vacuums up the water to send it down the drains. Contact a company like GRC Roofing Co. for more information.