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Pros & Cons of Flat Roofs

In News by Infinity Roofing

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Whether you’re looking for a roof design for a residential or commercial building, it’s a big decision. There are two main options to consider when it comes to the style of roof: pitched or flat. 

Pitched roofs are also known as sloped roofs because they are angled. Flat roofs are parallel to the ground, with an angle less than 10 degrees. While sloped roofs have their own set of pros and cons, we’re going to be talking about the benefits of flat roofs and some of their disadvantages.

Pros: Benefits of Flat Roofs 

There are quite a few advantages to having a flat roof versus a pitched roof, making them a popular choice, particularly in commercial applications.

Offers a Unique Aesthetic 

Although some flat roofs may not be as visually appealing as pitched roofs, they offer a unique aesthetic that fosters a more modern or industrial appearance. 


Pitched roofs leave more space to trap hot air or allow cool air to escape, whereas flat roofs have less space for the air to linger. This feature of flat roofs results in better energy efficiency than pitched roofs. Flat roofs are also more conducive for using energy-efficient materials that reflect solar energy, such as TPO.

Creates More Outdoor Space

Flat roofs create more usable outdoor space, whether you want to construct a roof garden, deck, or just an outdoor area to relax and unwind. Be mindful if you plan on installing a garden, though, as some invasive plants can cause issues if the roots penetrate the roof. 

Flat roofs are also a great space for solar panels. Solar panels can still be used on a pitched roof, but they’re less visible on a flat roof. Additionally, flat roofs are great for storing air conditioning units, so you don’t have to put them on the ground. 

Easier to Access

Pitched roofs are harder to access and tricker to climb on to inspect or do repairs. Flat roofs are much easier to access but still require caution. 

Cons: Disadvantages of Flat Roofs 

Even though there are a lot of benefits of flat roofs, there are some disadvantages that need consideration. 

Less Indoor Space

Pitched roofs allow space for attics and lofts, something that’s not an option with flat roofs. So even though flat roofs may give you more outdoor options, you will have less indoor space. 

Less Resistant to Temperature Fluctuations

Flat roofs don’t have as much room for insulation as pitched roofs so they are less resistant to extreme fluctuations in outdoor temperatures. They also can’t handle the weight of heavy built-up snow, which is why flat roofs are typically used in warmer climates. Sometimes flat roofs can have a thicker construction to allow more room for insulation in colder areas. 

Poor Drainage

Pitched roofs drain easier because of their angled position. Flat roofs don’t drain as well, so they usually need a drainage system to minimize issues with standing water. Standing water can lead to roof deterioration. The seams are especially vulnerable to breaking down or leaks. 

Stability Issues 

The larger the surface area of a flat roof, the less stability it has. Buildings with large flat roofs may need extra support for the higher weight of the roof.

Consult the Commercial Flat Roofing Experts

Despite having a few disadvantages, there are still many benefits to having a flat roof. Not to mention, when working with a trusted roofer, the cons of flat roofs can be minimized with proper planning, installation, and maintenance. The flat roofing experts at Infinity Roofing & Siding can walk you through the flat roof repair and installation processes, helping you determine the best roofing option for your property.

Infinity Roofing & Siding offers reliable residential and commercial roofing services in Richmond, Williamsburg, Fredericksburg, Virginia Beach, and the surrounding areas. Whether your roof is pitched or flat, shingled or metal, old or new, the roofing specialists at Infinity Roofing & Siding can assess your roof for storm damage and provide high-quality roof repair, restoration, and replacement. Reach out to us for a free inspection and quote!