When it comes to protecting commercial buildings with flat or low-slope roofs, durability, weather resistance, and cost-efficiency matter most. One solution that consistently checks all these boxes is Built-Up Roofing (BUR). At Pete’s Builders, we specialize in BUR systems that provide long-lasting, dependable roofing solutions tailored to your property’s unique needs.

Let’s dive into why built-up roofing remains one of the top choices for flat roofs across commercial sectors.

What Is Built-Up Roofing?

Built-Up Roofing, often referred to as tar and gravel roofing, is a system made of alternating layers of bitumen (like asphalt or coal tar) and reinforcing fabrics, such as fiberglass or organic felt. These layers are “built up” directly on the roof deck, creating a thick, waterproof membrane. The surface is usually finished with gravel or a mineral cap sheet for added protection against UV rays and physical damage.

This tried-and-true roofing method has been trusted for decades and continues to stand strong in today’s commercial roofing industry.

Top Benefits of Built-Up Roofing for Flat Roofs

1. Exceptional Durability and Longevity

One of the most important features of BUR is its impressive lifespan. A well-installed system can last 25 to 30 years or even longer with basic maintenance. Its multi-ply design distributes weight and impact stress more evenly, resisting wear from foot traffic, falling debris, and harsh weather.

For commercial buildings, this means fewer repairs and a better return on your investment over time.

2. Superior Waterproofing and Redundancy

Flat roofs often struggle with drainage, making them more prone to water pooling and leaks. Built-up roofs address this problem head-on with their layered waterproofing system. Even if one layer is compromised, the others keep water out—giving you peace of mind and dependable year-round protection.

3. Fire and Impact Resistance

The gravel or mineral surface layer of a BUR system does more than just look tough—it acts as a built-in fire barrier and protects against UV radiation, hail, and other impact damage. This added layer of defense makes BUR a smart choice for commercial properties located in extreme weather zones or fire-prone areas.

4. Energy Efficiency and Insulation Options

Built-up roofs can include insulation layers that improve indoor temperature regulation, reducing your reliance on HVAC systems. Additionally, BUR systems can be treated with reflective coatings that minimize heat absorption, helping you maintain cooler indoor temperatures and lower energy bills.

5. Low Maintenance Requirements

One of the reasons BUR is so appealing is its low maintenance needs. Unlike some roofing types that require frequent attention, BUR systems only need routine inspections and occasional minor repairs to stay in great shape. This means fewer interruptions for your business and more predictable maintenance costs.

At Pete’s Builders, we also offer custom roof maintenance plans to help you extend the life of your BUR system without unnecessary expenses.

6. Versatility for Commercial Applications

From industrial warehouses to office complexes and retail centers, built-up roofing can be tailored to suit nearly any commercial structure. It adapts well to varying insulation, slope, and drainage requirements, giving property owners more flexibility without compromising performance.

7. Long-Term Cost Efficiency

While the initial installation of a BUR system might be higher than some alternatives, the savings come in the long run. With its reduced maintenance needs, fewer repairs, and longer lifespan, BUR delivers excellent value and lowers your building’s total cost of ownership over the years.

Why Trust Pete’s Builders for Your BUR Installation?

At Pete’s Builders, we combine expert craftsmanship with high-quality materials to ensure every built-up roofing system we install is built to last. Our crews are licensed and insured, with years of experience installing and maintaining BUR systems for a variety of commercial clients.

We don’t just install roofs—we help businesses protect their investments through dependable solutions, clear communication, and lasting results.

Conclusion: Invest in a Proven Flat Roof System

If you’re looking for a roofing system that offers superior waterproofing, durability, and energy efficiency, built-up roofing is a proven solution that won’t let you down. It’s strong, adaptable, and cost-effective—everything a commercial flat roof should be.

Ready to upgrade your flat roof with a built-up system? Let Pete’s Builders guide you through the process with expert advice and professional service you can count on.

Need a consultation or inspection? Contact Pete’s Builders today and protect your commercial roof with a system designed to last.