Why Built-Up Roofing Systems Are Great for Commercial Spaces

When it comes to selecting the right roofing solution for commercial buildings, longevity, durability, and cost-effectiveness are critical factors to consider. One of the most tried-and-true options in the roofing industry is the built-up roofing (BUR) system. Having been around for over a century, this type of roofing has earned its reputation as a reliable, robust solution for commercial spaces. In this blog, we’ll explore why built-up roofing systems are such a great choice for commercial buildings and how they offer benefits that stand the test of time.

What Is a Built-Up Roofing System?



Built-up roofing (BUR) systems, often referred to as "tar and gravel" roofs, consist of multiple layers (or plies) of roofing felt, alternated with layers of bitumen (asphalt, coal tar, or cold-applied adhesives). The system is finished with a top layer of gravel or a reflective coating that provides extra protection. These alternating layers create a thick, water-resistant barrier that can stand up to harsh environmental conditions, making it especially effective for flat or low-slope roofs commonly found on commercial buildings.

Durability and Long Lifespan

One of the biggest reasons why BUR systems are ideal for commercial spaces is their exceptional durability. The multiple layers of bitumen and felt provide excellent protection against leaks, punctures, and other forms of damage. This multi-ply construction offers redundancy, meaning that even if one layer is compromised, the others will continue to protect the building.

A well-maintained BUR system can last for decades, making it a long-term investment for commercial property owners. The lifespan is further enhanced by the protective top layer, typically made of gravel or a reflective coating, which shields the roof from UV radiation, extreme temperatures, and general wear and tear.

Superior Weather Resistance

Built-up roofing systems are specifically designed to withstand harsh weather conditions. Whether your commercial building is located in an area prone to heavy rain, extreme heat, or high winds, a BUR system provides excellent protection. The thick, multi-layered design offers a waterproof seal that minimizes the chances of leaks, even in heavy storms.

The gravel or reflective coating also helps to deflect UV rays, reducing the risk of heat damage. This is particularly important in hot climates where continuous sun exposure can cause other roofing systems to degrade over time. Moreover, the gravel ballast helps to stabilize the roof against high winds, providing extra security in areas that experience frequent storms or hurricanes.

Energy Efficiency

Another key benefit of built-up roofing systems is their energy efficiency. The layers of bitumen and felt act as an excellent insulator, helping to regulate the internal temperature of a building. In the winter, BUR systems help retain heat, reducing the need for excessive heating. During the summer months, the reflective top layer can help deflect sunlight, lowering cooling costs.

Many commercial buildings are now opting for BUR systems with highly reflective coatings, which enhance energy efficiency even further by reducing the heat island effect in urban areas. By reducing energy consumption, businesses can lower their environmental footprint and save on utility bills.

Versatility and Customization

Built-up roofing systems are highly versatile and can be tailored to suit the specific needs of a commercial building. For example, depending on the climate or the building’s structural requirements, different types of bitumen or top layers (such as gravel, reflective coatings, or mineral surfaces) can be used. This flexibility ensures that the roofing system is optimized for its environment, providing the highest level of performance possible.

Built-up roofing systems offer a range of benefits that make them ideal for commercial spaces. Their durability, weather resistance, energy efficiency, and low maintenance requirements ensure that they provide long-term value for building owners. While other roofing options may come and go, BUR systems have proven their reliability over the decades, making them a dependable and cost-effective solution for commercial buildings. If you’re looking for a roofing system that can stand up to the elements, reduce energy costs, and provide peace of mind for years to come, a built-up roof might be the perfect choice for your commercial property.

For more info, contact us at Berwald Roofing.