What is Built-Up Tar & Gravel Roofing?
Built-up roofing (BUR), also known as tar and gravel roofing, is a traditional and highly reliable roofing system for flat and low-slope commercial buildings. This multi-layered system is composed of alternating layers of bitumen (asphalt or tar) and reinforcing materials such as fiberglass or organic felt. The top layer is finished with gravel or other aggregate, which protects the underlying layers and enhances the roof’s durability.
Key Features and Benefits
- Durability: The multi-layer design ensures excellent resistance to wear, punctures, and harsh weather conditions.
- Waterproofing: The combination of tar and reinforced layers creates a watertight seal that prevents leaks.
- UV Protection: The gravel top layer protects against harmful UV rays, extending the roof’s lifespan.
- Thermal Performance: Built-up roofing provides insulation and reduces heat absorption, improving energy efficiency.
- Proven Track Record: BUR has been used for over a century, making it one of the most trusted systems for commercial roofs.
- Low Maintenance: Once installed, BUR requires minimal maintenance, with regular inspections ensuring long-term performance.
Installation Process
- Preparation: The roof deck is cleaned and prepared for installation, ensuring proper adhesion of materials.
- Layering: Multiple layers of bitumen and reinforcing fabric are alternated to build a strong and resilient system.
- Gravel Application: A layer of aggregate, typically gravel, is applied to the surface for protection and weight distribution.
Maintenance and Repair
Although BUR is low-maintenance, regular inspections can prevent small issues from becoming costly problems. Common repairs include patching leaks, resealing seams, and replacing damaged gravel. With proper care, BUR systems can last 20–30 years or more.
Why Choose Built-Up Tar & Gravel Roofing?
Built-up tar and gravel roofing is an excellent choice for businesses seeking a cost-effective, time-tested solution for flat roofs. Its durability, versatility, and strong resistance to the elements make it a reliable option for various commercial applications.
Contact Us for Built-Up Roofing Services
At Metro Roofing, we specialize in built-up tar and gravel roofing installation, repair, and maintenance. Our experienced professionals ensure high-quality workmanship tailored to your specific needs. Contact us today for a consultation or free estimate on your BUR roofing project!