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While their importance is often overlooked, commercial roofing systems such as flat roofing are carefully designed to keep buildings air and water-tight to maintain their integrity. Roofing options have expanded over the past 50 years, ensuring every building has a roof that meets its specific requirements. As such, building owners, architects, and contractors must be well informed on the different types of roofs available.
Flat roofs are typically used on commercial buildings and they can be found in factories, warehouses, box stores, apartment buildings, and schools or universities. Flat roofing was designed with efficiency in mind. Clients interested in flat roof installations can trust our experienced commercial roofing team!
Cons of Flat Roofing
More Complex Water Drainage Process
Many people hold the incorrect belief that rainwater accumulates on flat roofs. The truth is that these roofing systems come with sophisticated drainage systems. Overall, this aspect is a pro, as it prevents water from collecting on the roof. However, the drainage system may need to be inspected on occasion to ensure that it is working properly. Over time, debris and other blockages can compromise the system’s efficiency, potentially leading to ponding water on the flat roof’s surface.
Regular inspections can identify and rectify such issues before they become problematic. In instances of ponding, measures such as adjusting the roof’s slope, installing additional drains, or clearing existing pathways can be effective solutions.


Better For Small Buildings
Flat roofing systems are often deemed suitable for smaller structures due to their design and weight distribution characteristics. These roofs excel in covering the expanse of commercial buildings efficiently, providing a practical and cost-effective solution for businesses. However, their application isn’t without limitations. In particular scenarios, especially when dealing with larger or more complex structures, flat roofs require careful consideration to ensure structural integrity.
Limited Lifespan
While it’s true that flat roofing systems generally have a shorter lifespan compared to pitched roofs, with an average durability of around 25 years, this factor is effectively offset by their lower overall cost. The initial investment required for a flat roof, along with the expenses associated with its maintenance and eventual replacement, is significantly less than that for pitched roofs. This cost-effectiveness is a key consideration for property owners.
Membrane Shrinkage
Materials used in flat roofing systems, particularly those that make up the waterproof membrane, are sometimes susceptible to shrinkage over time. This phenomenon largely stems from the membrane’s exposure to ultraviolet (UV) radiation, a common issue under the relentless sun. The shrinkage not only affects the roof’s aesthetic and structural integrity but also its functional performance, potentially leading to gaps or weakened areas that compromise the roof’s overall waterproofing capabilities.
By identifying early signs of wear and taking preventative measures, such as the application of UV-protective coatings or conducting timely repairs, the integrity of the flat roofing system can be preserved.


Flat Roofing
FAQs
Are flat roofs less aesthetically pleasing than pitched roofs?
Ultimately, this is subjective as everyone has their own preferences for the look of their roof. Generally speaking, when roof space is used with aesthetics in mind, a flat roof can be very visually appealing. Clients who create a roof garden or terrace, for instance, find that their roof is one of the most positive features of the entire facility.
How often do flat roofs need to be inspected?
Roof inspections on flat roofs should be conducted twice a year, preferably in March and November. This will allow for a better understanding of the roof’s status in different weather conditions. It is a good idea to inspect it following heavy rain or snow.
Can my business stay open while the roof is being worked on?
Generally speaking, businesses can remain open while repairs are taking place. Under certain circumstances, this even applies to a full roof replacement. This is especially true if the roof is being redecked, leaving the old membrane in place. Businesses can stay running, as the membrane protects customers from being exposed to elements in the roof.
Near Our Flat Roofing Company
At LOA Construction, we’re proud to provide trusted flat roofing services to communities in and around the cities of Austin, Houston, San Antonio, Round Rock, Belton, Temple, and Killeen. We are located not far from:
