Flat Roofing Systems: An Overview

Although flat roofs are very common in climates with little rainfall, they are once again gaining popularity in the United States. Some people might be skeptical of the practicality provided by a flat roof, so read on for a description of the protection they provide.

Overview

These roofing systems are not entirely flat, since a minor slope is needed to allow for effective water drainage. There are several options for materials, depending upon the climate in which the roof is constructed. Masonry and concrete are typically used for this roofing in areas where rain is scarce. In places with significant rain or snowfall, waterproof materials, most often tar and gravel, are required when constructing a building with a flat roof. Other materials that may be used for these roofs include asphalt, ethylene propylene diene monomer, bitumen and polyvinyl chloride.

Pros and Cons

Budget is a major factor in every commercial project, and this type of roofing will likely be more affordable than other options since the materials are inexpensive and far less labor is required. Additionally, attic space in buildings with these roofing systems is far more efficient since the height is level throughout.

The main pitfall of having a flat roof is the potential for water pooling that takes place on surfaces with slight slopes. If left unattended, water and ice can eventually seep through the roof into the building. However, the timely professional removal of rooftop snow helps to minimize this issue. Too much foot traffic on the roof can create a crack in the waterproofing and should be avoided.

With the proper maintenance, flat roofs can be a cost-efficient option for commercial buildings. To maximize the lifespan of the roof, be sure to promptly address any water pooling issues and you should be able to rely on the protection of these roofs for many years.