Why Are Flat Roofs On Larger Commercial Buildings?

Why Are Flat Roofs On Larger Commercial Buildings?It’s very likely that when you take a close look at the roof of your home you see that there is a slope. If you’ve ever looked at commercial buildings in the area you may wonder why the majority of commercial buildings tend to have flat roofing. There are a few advantages that flat roofing can bring, especially with larger buildings made for commercial use. Even in smaller commercial buildings, there can be numerous advantages to choosing a flat roofing system. Here are some of the top reasons that commercial buildings commonly choose flat roofs.

An Excellent Place To Store HVAC

Inside most residential buildings the HVAC system is commonly stored in the basement. Most larger buildings for commercial use will require HVAC equipment that is significantly larger. In order to account for the storage space that’s needed for this larger HVAC system, it’s much more advantageous to store the system on a roof. Flat roofing systems are some of the perfect areas to store this equipment and maintenance staff can easily access the area through a stairway when repairs are required. If a commercial building had a sloped roof it would be much more difficult to store these features. 

Improved Drainage

Commercial buildings often see improved drainage when they choose a flat roof design. A building that is larger often collects large amounts of rainwater. Managing this rainwater will require greater drainage solutions. Rather than having ongoing pooling of rain lead to roofing damage and wearing at the materials of a roof prematurely, commercial roofs are designed in a format that can dive or water in a safe manner. Commercial roofs often use various pipelines to divert water away from roofing systems and away from foundations. 

There’s No Need For a Wooden Frame

Modern flat roofs do not require a wooden frame. Instead, we usually construct them from concrete or steel-strength roofing materials.The durability that can be found in these roofing materials are far better than the average residential system and this will require less maintenance and ongoing work to keep the building up. The concrete and steel systems will expand over time as well as contract with the seasons and this can make sure that the roofing materials enjoy a greater lifespan. Even the maintenance that is offered on a commercial roof can be done more safely and efficiently because of the materials that are involved.

Aesthetics And Flexibility

A commercial building can also enjoy a series of aesthetic improvements by choosing a flat roof design. Flat roof designs can be more beautiful because they are versatile. These types include areas for patios, gardens, and modern spaces. They can produce a much more beautiful look even in a commercial space than a typical pitched roof. 


Flat roofs are popular for industrial buildings because they are more affordable. Because flat roofs are cheaper than sloped roofs, companies can save money on construction costs. Because they have a smaller surface area, flat roofs are cheaper and easier to install because workers can safely walk across them.

Flat roofs require less time and use less material. Traditional slanted roofs are very complex and leave a lot of space unoccupied. Flat roofs are simple to install and cost little. This is a common requirement for commercial spaces. Commercial spaces are usually larger than residential spaces, so the square footage counts. Imagine a large building. A slanted roof must be on a low slope or extremely large. This would be costly and, in large part, unneeded.

It’s Easier to Maneuver For Maintenance

It’s a big job to get up on your roof and inspect it. To inspect your roof carefully, you will need to climb up a ladder. Flat roofs are easier to manage, which makes maintenance much simpler. Maintenance professionals don’t have to climb a ladder. They can use the stairs instead. They don’t have to navigate a steep slope, but can simply walk as normal.

Commercial buildings aren’t subject to the same maintenance issues as residential properties. You don’t want your roof to be dirty every week like a house. With a commercial building, this is less of an issue.

Overall Longevity

Commercial flat roofs that receive regular maintenance are some of the longest-lasting and most durable roofing materials in the world. Commercial buildings that use a flat roof design are built for longevity and to reduce the interruptions that would affect the business. Rather than having to replace shingles and sloped roofing components over the short term, a commercial business will be able to keep their roof in excellent condition for less. 

Services We Offer

Old Time Roofing offers not just commercial roofing, but also residential roofing services:

Roofing materials that we work with:

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Here at Old Time Roofing we specialize in quality commercial roofing systems and state of the art flat roof installation. We have been installing commercial flat roof systems for years, and there are many benefits to using a flat roof system over a sloped roof. For example, a flat commercial roof is more affordable because the product you require is much less complex. We also believe that since our products are fire-rated, it adds another layer of protection to your building. The roofing system we use resilient to severe weather than a sloped roof. Old Time Roofing provides expert roofers that takes great pride in their work, and every task is done to insure protection against water leakage.

Flat roofs remain the best choice for most commercial buildings when compared to sloped roofs. If you’re interested in learning more about flat roofing technology and if it would work best for your business, contact us today at A Old Time Roofing to schedule a consultation. We offer a wide range of roofing services that are designed to serve commercial customers. Regardless of the size or scope of your project, we’ll design a roofing system that meets your budget and suits your needs.