3 Drainage Solutions for Flat Roofs


Flat roofs are common in commercial construction in both Tyler and Dallas. Flat roofs are relatively inexpensive, so building owners choose them for affordable installation and maintenance. They also provide space for air conditioning units, solar panels, even rooftop gardens. Owners can maximize use of interior space without the pitch of a traditional attic. However, flat roofs don’t drain as well as roofs with a pitch. Here are some of the best drainage solutions if your building has a flat roof.

Inner Drains

Many roofs have a drainage system installed near the center of the roof. They connect to pipes that direct water to gutters and away from the walls and foundation. Here are the benefits.

  • The drainage system usually includes a strainer that keeps leaves and debris from clogging pipes.
  • They can’t be seen from the street, so your building is visually pleasing.
  • The building and walls protect inner drains so they can’t freeze and crack during winter.

However, inner drains do have some drawbacks. They’re one of the most expensive drain systems to install. If they need maintenance or repair, you’ll have to call an expert.


Gutters work on a flat roof much like they do on a traditional roof. They catch water that runs off the roof and funnel it safely away. Gutters are the most commonly used drainage system because they’re also the most affordable.

One benefit of gutters is that they direct runoff away from windows and doors. When clients or employees approach your building in bad weather, they aren’t inundated by water from your roof. However, many builders prefer not to install them because of the potential problems they involve.

Gutters are continually exposed to the elements. When leaves, twigs and debris fall into them, they become clogged. If they aren’t cleaned regularly, pests can nest in organic material. Clogged gutters hold water that can freeze and cause cracking. Wet leaves and water might make them so heavy they tear away from the building and damage the roof.



Roof scuppers are a drainage system that involves openings along the roof’s curb. When professionals correctly design the roof to provide a slight slope, water drains from the center to metal receptacles around the edge. The scuppers then direct runoff away from the foundation.

Scuppers are cost-effective and require almost no maintenance. As long as they’re large enough, they never clog. Roof debris washes off the roof and flows away from your building with the rest of the rain. They can add visual interest and architectural appeal.

Advantage Roofing Company has extensive experience in all types of commercial roofing. We provide Tyler and Dallas businesses with re-roofing, roof repairs, restoration and maintenance.

Contact us for a free roof analysis today.