Protecting Your Commercial Roof with the Right Drainage

Commercial buildings often have flat roofs. They are too large to make a pitched roof cost-effective, and they are more utilitarian in style so don’t really need a stylized roof. While flat roofs are cost-effective and practical, they also have special challenges – chief among them the way they drain water.

It’s important that you work with an experienced commercial roofing contractor in Arizona to ensure that your flat roof has the right drainage, whether you are investing in a new roof installation or you are trying to protect and maintain your current roof. Here are three options your roofer might offer you for drainage:

Protecting Your Commercial Roof with the Right Drainage


Gutters are one of the most common drainage options for all roofing types – flat or pitched, commercial or residential. Gutters are placed along the edges of the roof to collect any water that falls off it. The water is then channeled down the side of the building and away from it.
A roof doesn’t have to be pitched for gutters to be effective. Water will still run to the sides of a flat roof, and the right seamless gutters will gather that water and keep it away from the roof and the building. Gutters are a cost-effective drainage solution, and you can get a seamless gutter installation without making any changes to the roof itself, we’ll be happy to help you out with you gutter installation

Interior Drains

Even with gutters, water can still pool on the interior of a flat roof. Small puddles can evaporate quickly, assuming a sunny day. But Phoenix has a monsoon season every year that delivers unrelenting rain. Those puddles can grow larger, and they can put weight on the roof, leading to damage.

Interior drains are placed on the interior of a flat roof. They have a grate on the top, and the water flows into a catch basin. Pipes are connected to the basin to direct the water away from the building. You need an experienced Gilbert commercial roofing contractor to install interior drains. Installing them requires cutting through the roof, running new equipment through the building, properly sealing the drain, and more. The job requires advanced knowledge and skill to get right. Mistakes can lead to continued pooling water, leaks around the drain, and more.


Scuppers work together with other drainage systems to keep the water that is being funneled off your flat roof away from your commercial building. Scuppers are outlets that project from the building, and they channel water far from the building so that the water doesn’t pool around the foundation and cause serious damage.

Scuppers should be used within a larger system. They should be attached to things like gutters or interior drains, and they should connect to a system that is able to manage the excessive runoff, such as a drainage basin. Your Mesa roofing contractor can assess your building and give you tailored recommendations for the most effective drainage solutions.

Managing drainage is one of the most important things you can do to protect your roof, whether you have a flat roof or a pitched roof. However, it becomes even more important on flat roofs, since the pooling water can put extreme pressure on the roof or contribute to rot. Hire a Queen Creek roofing contractor to inspect your roof and determine if you have the right drainage in place. If you are considering re-roofing, make sure you talk through your drainage options and get the right ones to protect your new roof and give it the longest life possible.

Canyon State Roofing and Consulting can ensure that your Phoenix commercial roof is strong and healthy to protect your property. Our experienced roofing contractor can install the right drainage to keep your flat roof dry and healthy, or they can design a new roof installation that includes that drainage right from the start. Our contractors have extensive training and experience, and they are committed to performing the best workmanship for the best results. They are the reason we have a reputation as a top roofing company in Phoenix. Call us in Phoenix today to schedule a consultation with a roofing contractor and to learn more about your roofing and drainage options. We’ll provide a free written estimate. All our work is backed by an airtight warrant

Canyon State Roofing
4809 E Thistle Landing Dr #100
Phoenix, AZ 85044

Phone: (602) 400-1635