For flat or low-slope roofing systems, tar and gravel roofing—also known as built-up roofing (BUR)—remains a proven and practical choice. Used for decades in both commercial and residential settings, this system is known for its long-term durability, reliable performance, and cost-effectiveness.
Tar and gravel roofing is a type of built-up roof (BUR) system that consists of multiple layers of roofing felt alternated with layers of hot tar or asphalt. These layers are then topped with a final layer of gravel or stone, which serves as a protective barrier.
This layered design provides exceptional durability and protection, making it a popular option for flat roofs in commercial, industrial, and residential settings.
One of the key reasons tar and gravel roofing remains a popular choice is its durability. Built to withstand harsh weather conditions and heavy foot traffic, this type of roofing system is designed to last 20-30 years or more with proper maintenance. The gravel layer protects the underlying materials from:
For flat roofs, where drainage and water pooling can be a concern, the durability of tar and gravel roofing ensures reliable long-term performance.
The multiple layers in a tar and gravel roofing system provide outstanding waterproofing. Each layer of felt and tar creates a barrier against water infiltration, making it ideal for properties in areas with heavy rainfall or snow. The final layer of gravel also helps to direct water to the drainage system, preventing standing water on the roof.
This waterproofing ability is particularly valuable for commercial and industrial properties, where water damage could disrupt operations or damage valuable equipment.
Compared to other flat roofing options, tar and gravel roofing offers a cost-effective solution without compromising on performance. The materials used in this system are relatively affordable, and the installation process is straightforward for experienced roofing professionals.
Another advantage of tar and gravel roofing is its low maintenance needs. The gravel layer provides natural protection against UV rays and physical damage, reducing the need for frequent repairs.
However, routine inspections are still essential to ensure the roof remains in good condition. Clearing debris, checking for gravel displacement, and addressing any small cracks or leaks early can further extend the lifespan of the roof.
Many property owners are now prioritizing sustainability when choosing roofing materials. Tar and gravel roofing is an environmentally friendly option because it:
These environmental benefits make tar and gravel roofing a responsible choice for property owners looking to reduce their carbon footprint.
While tar and gravel roofing offers numerous benefits, it’s particularly well-suited for:
If you’re considering a new roof for your commercial, industrial, or residential property, tar and gravel roofing might be the ideal solution. Its proven durability, cost-effectiveness, and adaptability make it a standout choice for flat roofs.