BUR MODIFIED BITUMEN ROOFING
At Ranger Roofing & Construction, we believe commercial property owners and facility managers deserve high-quality roofing solutions tailored to their needs. That’s why we proudly offer Built-Up Roofing (BUR) Modified Bitumen systems—a time-tested, durable, and cost-effective option trusted by businesses across the country.
As a nationally certified woman-owned commercial roofing company with over 20 years of experience, Ranger Roofing is dedicated to providing smart, long-lasting roofing systems that protect your investment. BUR Modified Bitumen is one of the most popular commercial roofing options we install, repair, and maintain for clients in manufacturing, retail, education, government, religious facilities, healthcare, and more.
What Is BUR Modified Bitumen Roofing?
BUR, or Built-Up Roofing, is a layered roofing system that has been used in commercial construction for more than a century. Often referred to as "tar and gravel roofing," BUR systems consist of alternating layers of bitumen (asphalt or tar) and reinforcing fabrics to create a finished membrane that is both waterproof and highly durable.
Modified Bitumen takes traditional BUR a step further by incorporating polymer-modified asphalt, which increases flexibility, UV resistance, and overall longevity. These systems can be applied using hot asphalt, cold adhesives, or torch methods, depending on the structure's requirements.
Key Benefits of BUR Modified Bitumen Roofing
Proven Performance
BUR systems have been in use for over 100 years. Their long track record of success makes them a trusted solution for flat and low-slope commercial roofs, especially in demanding environments.
Multi-Layer Protection
The layered nature of BUR systems provides excellent redundancy. If one layer becomes compromised, others remain intact, providing continued protection. This makes it highly resistant to water infiltration and damage from foot traffic.
Excellent Waterproofing
Water damage is one of the most common and costly issues for commercial roofs. BUR systems, when properly installed and maintained, deliver superior waterproofing, especially for buildings in areas prone to heavy rain or moisture.
Thermal Performance & Energy Efficiency
BUR systems can be topped with reflective coatings or mineral-surfaced cap sheets to enhance solar reflectivity and improve energy efficiency. This helps reduce your cooling costs in warmer climates and contributes to a more sustainable building envelope.
Cost-Effective Over Time
Although the initial installation cost of BUR Modified Bitumen systems may be higher than some single-ply options, their long lifespan and low maintenance requirements make them a cost-effective investment in the long run.
Ideal for Flat or Low-Slope Commercial Roof
BUR Modified Bitumen is especially suited for flat or low-sloped roofing applications, where traditional shingle systems fail to provide the necessary water sealing. Shingles rely on gravity and slope to shed water, but flat roofs require fully adhered, sealed surfaces like BUR to remain watertight.
Whether you own a warehouse, retail center, school, municipal building, church, or industrial facility, BUR Modified Bitumen can provide the reliable performance your structure needs.
Components of a BUR Modified Bitumen Roof System
Understanding the layers involved in a BUR Modified Bitumen system can help you appreciate its durability:
Bitumen
Asphalt or coal tar serves as the adhesive and waterproofing agent.
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Reinforcing Fabrics
Often fiberglass or polyester, these fabrics provide strength and structure.
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Membrane Layers
Typically composed of two to four layers of bitumen and reinforcing materials.
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Surface Options:
Gravel or mineral granules (aggregate)
Aluminum or elastomeric coatings
Mineral-surfaced cap sheets
Glass-fiber felts
Each component plays a vital role in creating a long-lasting roofing system that resists weather, UV radiation, and mechanical damage.