Built-up roofing (BUR) systems have been a staple in the commercial roofing industry for over a century. Known for their durability and multilayer construction, BUR systems continue to be a competitive choice for commercial flat roofs. At Steadfast Roofing, we provide expert installation and maintenance services for built-up roofing systems, ensuring your commercial property is well-protected.
What is Built-Up Roofing?
Construction and Composition
Built-up roofing systems consist of multiple layers of materials. The process starts with a base layer of insulation and waterproofing. Asphalt is applied over this base layer and covered with a reinforcing layer of felt. This layering process is repeated to build up the roof, providing redundancy and protection even if one layer is damaged. The final layer is often a stone-coated cap sheet or gravel, enhancing the roof’s physical durability.
Application Methods
BUR systems can be installed using hot asphalt or cold-applied adhesive. Each method has its advantages, but both involve multiple layers to create a robust and long-lasting roofing system. The built-up nature of these roofs makes them resistant to various forms of damage, ensuring a reliable solution for commercial properties.
Pros of Built-Up Roofing
Longevity
Built-up roofing systems are known for their impressive lifespan. Conventional wisdom suggests that each layer of a BUR system adds approximately five years to its life expectancy. Therefore, a well-installed BUR roof can last up to 30 years, making it a durable choice for commercial properties.
Impact Resistance
One of the significant advantages of BUR systems is their resistance to physical damage. The gravel top layer provides excellent protection against hail and storm debris, which are common issues in regions like Florida. This impact resistance sets BUR apart from other roofing materials such as TPO, which are more susceptible to punctures and damage.
UV and Heat Resistance
BUR systems are highly resistant to UV rays and heat, thanks to the gravel top layer. This resistance helps maintain the roof’s integrity in sunny climates and reduces the risk of damage from prolonged sun exposure.
Protective Sealing
Unlike other flat roofing systems that have installation seams, BUR systems are entirely sealed. This continuous sealing enhances insulation and provides a robust barrier against the elements, making BUR a reliable choice for weatherproofing commercial buildings.
Low Maintenance
Built-up roofs require relatively low maintenance compared to other roofing systems. While leaks can occur over time, they are generally infrequent. When maintenance is needed, it often involves adding more gravel to the roof, which is a straightforward and cost-effective solution.
Cons of Built-Up Roofing
Higher Installation Costs
The multilayer construction of BUR systems increases the cost of materials and labor. Each layer needs to be installed meticulously, which can be time-consuming and costly. However, the long-term benefits and durability often justify the initial investment.
Wind Resistance Issues
While the underlying structure of BUR systems is resistant to wind damage, the top layer of gravel can be dislodged during strong winds. This can create additional debris and potential hazards during storms.
Difficult Leak Detection
Detecting leaks in BUR systems can be challenging due to the multiple layers. Water can travel between these layers, making it difficult to pinpoint the source of a leak. Professional roofing contractors with experience in BUR systems are essential for accurate leak detection and repair.
The Steadfast Roofing Advantage
At Steadfast Roofing, we specialize in the installation and maintenance of built-up roofing systems. Our team of experienced professionals ensures that your BUR system is installed correctly and maintained to provide long-lasting protection for your commercial property. We also offer alternatives like TPO, EPDM, and modified bitumen roofing systems to meet your specific needs.
Conclusion
Built-up roofing systems offer a durable, low-maintenance solution for commercial properties, with excellent resistance to impact, UV rays, and heat. While they come with higher installation costs and potential wind resistance issues, their longevity and robust sealing make them a reliable choice. At Steadfast Roofing, we provide expert installation and maintenance services for BUR systems, ensuring your commercial property remains protected for years to come.
For more information on common flat roof issues and their solutions, click here.
