Types of Roof Drains Explained

Roof drains collect rainfall water, which travels to the sewage or drainage system through open plumbing lines. They carry water away from the roof to protect it.
According to Choice Solutions Roofing and Exteriors, the highest quality residential roofing contractor in Oklahoma City, OK, your roof drains should be equally spaced and located in low points of the roof or in any area where water accumulates.
A drain installed with the wrong size of pipe will not perform as expected and may cause you more problems.

Periodic inspections

Periodically inspect your drain to empty it when jammed with ice, garbage or other unwanted items. Failure to clean them promptly could make your roof to buckle or even collapse. Regular cleaning enables roof drains to prevent water from damaging your buildings.

Types of roof drains

There are different shapes and sizes of roof drains depending on the roof and building. Before choosing one, be sure to consider your roof size, pitch, construction type, drain location, drainage rate, roof, and safety load requirements and expected rainfall volume.

Flat roof drain

If your home or business building has a flat roof, you must install a roof drain. Since flat roofs do not slope or slant, the water will flood the roof and collect, which would affect your roof’s longevity.
Flat roof drain is composed of rain gutters set up on an incline to channel the collected water away. They have an advantage since some come with roof drain covers, which keeps unwanted debris from accumulating within the drain itself.

Siphonic roof drain

It is a more high-tech pipe that acts as a vacuum by using an air baffle, which pushes the water into the pipes while not allowing much air into them.
They have an advantage in that the water drains more rapidly than it might with another type of roof drain. It operates very smoothly, and it does not require much maintenance. It is, however, a little more costly than some drains.


Mesa roof drain

Manufactured from rubber, they are flexible, will not cause seal gaps, nor put pressure on floating roofs, and it does not scrape on the plank floor.
They provide an internal fluid way, which ensures proper drainage by reducing corrugation that might restrict flow or cause sediment to plug up valves.
Use a mesa roof drain if your home has a floating roof.

Zurn roof drain

First used in 1900, you can use it on different types of roofs. Each pipe is composed of a body or sump, a combination flashing clamp/gravel guard and a dome strainer.
They come in materials such as plastic, used for above ground pipes, iron used for below ground pipe extensions, and a patented backwater valve.

Green roof water drains

The new trend in roof drains is to replace the traditional roof with a green roof. A green roof drainage system is designed to accommodate waste while protecting the building structure with heavy waterproofing membranes. If you need any help regarding roof drains, don’t hesitate to contact Choice Solutions Roofing and Exteriors, a roofer company in Oklahoma City, OK.