Pearl City, Hawaii
96-1382 Waihona St, #1
Pearl City, HI 96782
(808) 456-5990

Why Do Commercial Buildings Have Flat Roofs? June 2, 2019

Pearl City, Ewa
Why Do Commercial Buildings Have Flat Roofs?, Ewa, Hawaii

Commercial buildings, whether they’re offices or shopping malls, typically have flat roofs. However, this roofing style isn’t fully flat—it has a slight grade that lets water drain. It also offers a few other perks that make it such a universal choice for buildings.

3 Advantages of Flat Roofs for Commercial Buildings

1. Height

In many locations, commercial buildings are subject to height restrictions. A sloped roof not only adds a lot of height, but also doesn’t increase usable space like a flat one does.

2. Storage Space

roofingTo cool a large commercial space, industrial HVAC equipment and ductwork are needed. To protect this equipment from vandals and meet regulations, it can be placed on top of the building, where access is limited to anyone with a key. A flat roof also makes it easy to install and maintain ventilation for the space and industrial machines.

3. Affordability

Most flat roofs consist of asphalt roll roofing, which is one of the most affordable materials available. If installed by a professional, it won’t leak or pool water. It’s also easy to maintain, patch, and repair, so you know your investment will last for years to come. When it’s time for a replacement, you may be able to place the new asphalt roll directly on top of the old material.


If your flat roof requires repair or replacement, turn to the experts at Tory’s Roofing & Waterproofing. For over 45 years, they’ve been the source for commercial and residential roofing throughout Pearl City, HI. They offer an All Roof Maintenance Program to back their work for five years, and they carry multiple certifications with local and national associations like the Roofing Contractors Association of Hawaii (RCAH), and Associated Builders and Contractors Inc. (ABC). To learn more about their services, visit them online, and call (808) 456-5990 to get a free quote. You can also find more roofing tips on their Facebook page.

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