When it comes to commercial flat roofing, reliability, longevity, and cost-efficiency are critical. Built-Up Roofing (BUR) – also known as tar and gravel roofing – has stood the test of time as one of the most trusted systems for flat and low-slope roofs. At Blue Frog Roofing, we specialize in BUR systems that offer exceptional durability, energy efficiency, and long-term value for property owners throughout Colorado and across the nation.

Let’s explore why built-up roofing continues to be the ideal solution for flat roofs.

What Is Built-Up Roofing?

Built-Up Roofing is a multi-layered roofing system constructed by alternating layers of bitumen (asphalt or coal tar) with reinforcing fabrics like fiberglass or organic felt. These layers are fused together using hot asphalt, then finished with a protective top layer – typically gravel or a mineral cap sheet – that defends against weather, UV rays, and physical impact.

This classic construction method creates a highly resilient, watertight surface designed for performance and longevity.

Key Advantages of Built-Up Roofing for Flat Roofs

1. Exceptional Durability & Longevity

A properly installed BUR system can last 25-30 years or more with minimal maintenance. The multi-ply design distributes stress evenly across the roof and resists wear from foot traffic, hail, and wind-blown debris, making it an excellent choice for commercial properties that demand lasting protection.

2. Superior Waterproofing and Redundancy

Flat roofs are more susceptible to water pooling and leaks than pitched roofs, but BUR systems are specifically designed to address this. With multiple layers of bitumen and fabric, BUR offers built-in redundancy – if one layer is compromised, others continue to keep water out. The result is a reliable waterproof barrier that helps protect your building year-round.

3. Fire and Impact Resistance

BUR systems are highly fire-resistant thanks to their gravel or mineral surfacing. This layer not only shields the roof from UV radiation but also provides a crucial fire barrier. Additionally, the thickness of the system resists punctures and tears from falling debris or rooftop equipment.

4. Energy Efficiency and Insulation

BUR systems can incorporate thermal insulation layers that help regulate building temperature and reduce HVAC costs. Reflective coatings can also be added to improve solar reflectivity and reduce heat absorption – ideal for buildings in sunny or hot climates.

5. Low Maintenance Needs

One of the biggest advantages of BUR is its low maintenance requirements. Regular inspections and simple repairs can extend the life of your roof by many years. At Blue Frog Roofing, we offer professional maintenance plans tailored to your roof type and budget, ensuring it stays in peak condition without hassle.

6. Versatility for a Range of Commercial Applications

From industrial warehouses to retail buildings and office complexes, BUR systems are suitable for a wide range of commercial properties. The system can be adapted to meet different insulation, slope, and drainage needs – giving building owners flexibility without sacrificing performance.

7. Cost-Effective Over the Long Term

While the initial investment for a BUR system may be slightly higher than some alternatives, its lifespan and minimal repair needs often make it the most cost-effective option in the long run. Fewer leaks, fewer emergency repairs, and a longer replacement cycle all contribute to a lower life-cycle cost.

Why Choose Blue Frog Roofing for Your BUR Installation?

At Blue Frog Roofing, we bring years of hands-on experience and technical know-how to every built-up roofing project. Whether you need a new roof, replacement, or maintenance on an existing system, we provide dependable, professional service backed by:

  • Licensed and Insured Crews across Colorado, Wyoming, and beyond.
  • Certified BUR Specialists trained to meet all manufacturer and industry standards.
  • Experienced Project Managers who coordinate large-scale installations with minimal disruption to your operations.
  • Advanced Solutions, including reflective coatings, premium surfacing options, and custom insulation packages tailored to your building’s needs.

Invest in a Proven Roofing Solution

A Built-Up Roofing system isn’t just a roof – it’s a long-term investment in your building’s performance, efficiency, and safety. With its exceptional strength, waterproof protection, and proven track record, BUR is the smart choice for flat-roofed commercial buildings of all sizes.

Ready to Upgrade Your Flat Roof?

Blue Frog Roofing delivers professional built-up roofing services across Berthoud, Denver, Cheyenne, and beyond. Whether you’re planning a new installation or need expert maintenance on your existing system, we’re here to help you build a stronger, more reliable roof.

Contact us today to schedule a consultation and learn how our BUR expertise can protect your property for decades to come.