For more than a century, built-up roofing has been a reliable choice for commercial buildings with flat or low-slope roofs. Known for its strength and long lifespan, this roofing system has stood the test of time across industries ranging from manufacturing to education. Commercial property managers in the Boston area often turn to built-up roofing because it offers proven protection against the city’s harsh winters, humid summers, and frequent temperature swings.
What Is Built-Up Roofing?
Built-up roofing, often called BUR, is a multi-layered system made by alternating layers of bitumen (asphalt or coal tar) with reinforcing fabrics such as fiberglass or polyester. These layers are then topped with a layer of gravel or mineral-coated cap sheets to create a durable and weather-resistant surface.
The process of “building up” these layers is what gives the system its name and its strength. By combining multiple waterproofing layers, built-up roofing provides excellent protection against leaks, UV damage, and wear from heavy foot traffic.
Why Built-Up Roofing Is Ideal for Commercial Flat Roofs
For commercial property managers overseeing large buildings, reliability and longevity are key factors when selecting a roofing system. BUR offers both. Its structure provides a tight, waterproof barrier that can handle heavy use while offering energy-efficient benefits.
Durability Against Boston’s Weather
Boston’s climate puts roofs to the test. Freezing winters, spring rain, and humid summers can cause significant expansion and contraction on roofing materials. Built-up roofing stands out for its ability to handle these temperature fluctuations without cracking or splitting. The multiple layers of bitumen and reinforcement sheets add stability, which helps maintain the integrity of the roof throughout the year.
Proven Longevity
One of the biggest reasons property managers choose BUR is its lifespan. When properly installed and maintained, BUR systems can last 25 to 30 years or more. Regular inspections and timely maintenance can extend that lifespan even further. For comparison, many single-ply systems last about 15 to 20 years, making built up roofing a strong long-term investment.
Superior Waterproofing
Flat roofs are particularly prone to water pooling. BUR resists water infiltration through its multiple waterproofing layers. The surface layer of gravel or mineral coating also helps protect against UV exposure, adding another level of defense against weathering.
Fire Resistance and Safety
Because of the materials used in its construction, built-up roofing offers strong fire resistance. The gravel or mineral cap layer acts as a natural fire retardant, which can be a valuable safety feature for commercial buildings with HVAC systems, vents, or electrical equipment on the roof.
Energy Efficiency Benefits of Built-Up Roofing
Energy performance is a growing concern for commercial property managers in Boston, especially as energy costs continue to rise. BUR can help reduce energy consumption by keeping buildings cooler in the summer and warmer in the winter.
The reflective properties of some surfacing materials, such as light-colored mineral coatings, help reduce heat absorption. This can lower indoor cooling costs and ease the load on HVAC systems.
Maintenance Requirements for Built-Up Roofing
While BUR is known for its durability, regular maintenance is essential to keep it performing well. Property managers should schedule inspections at least twice a year—preferably in spring and fall—to identify and address potential issues early.
Here are some common maintenance tasks:
- Check for cracks or blisters: Over time, temperature changes can cause small surface cracks. These should be repaired promptly.
- Inspect drains and scuppers: Flat roofs need clear drainage paths to prevent water pooling. Clogged drains can lead to leaks.
- Monitor surface wear: The gravel or coating can shift or thin in high-traffic areas. Reapplication may be needed periodically.
- Address flashing issues: Flashing around HVAC units, vents, and edges should be checked for signs of deterioration.
A well-maintained BUR system can provide decades of protection, reducing the need for costly repairs or premature replacement.
Installation Considerations for Commercial Properties
BUR installation requires skilled craftsmanship and the right materials. The process begins with preparing the roof deck, which must be clean, dry, and properly sloped for drainage. Roofing professionals then apply alternating layers of bitumen and reinforcement sheets, finishing with a surface layer of gravel or reflective coating.
Because this installation involves heating bitumen, it’s critical to hire an experienced roofing contractor. Proper installation directly affects the performance and lifespan of the system. For Boston property managers, choosing a contractor familiar with local weather challenges and building codes can make all the difference.
Comparing Built-Up Roofing to Other Flat Roof Options
BUR isn’t the only option for flat roofs, but it remains one of the most dependable. Compared to single-ply membranes like EPDM, TPO, or PVC, BUR offers more redundancy in waterproofing due to its multiple layers.
While single-ply membranes are quicker to install, they are more vulnerable to punctures and seam failures. Built-up roofing, on the other hand, provides a solid, layered defense that can better withstand foot traffic and mechanical equipment commonly found on commercial roofs.
For property managers overseeing older buildings or structures that demand long-term reliability, built-up roofing continues to be one of the most trusted choices.
Environmental Considerations
Many modern built-up roofing materials now include eco-friendly components such as recycled asphalt and reinforcement fabrics. Some systems can also be designed with reflective coatings that help meet energy efficiency standards and contribute to LEED certification goals.
The ability to add reflective coatings or use cool roof options makes built-up roofing an environmentally conscious choice for Boston property managers seeking to improve sustainability across their buildings.
When to Replace or Restore a Built-Up Roofing System
Even with proper maintenance, every roof eventually reaches the end of its service life. Signs that it may be time to replace or restore a built-up roofing system include:
- Persistent leaks despite repairs
- Large areas of blistering or cracking
- Excessive gravel loss or surface wear
- Deteriorated flashing or seams
In some cases, restoration may be an option. Adding a reflective coating or additional surfacing layer can extend the life of an existing built-up roofing system while improving energy performance.
Why Boston Property Managers Trust Built-Up Roofing
Commercial property managers in Boston need roofing solutions that can handle unpredictable weather and heavy use. Built-up roofing offers a balance of durability, longevity, and cost-effectiveness that makes it ideal for office buildings, schools, warehouses, and municipal properties.
The combination of time-tested materials and proven performance makes it one of the most dependable choices for flat roofs in the region.
Partner with Eagle Rivet Roofing for Expert Built-Up Roofing Services
Built-up roofing has remained a go-to system for commercial flat roofs because it delivers consistent protection, energy efficiency, and long-term value. For property managers in Boston, investing in this roofing system means choosing reliability that stands up to New England’s toughest weather conditions.
Eagle Rivet Roofing has extensive experience installing, maintaining, and restoring built-up roofing systems for commercial properties across the region. Our team understands the unique demands of Boston’s climate and provides solutions that deliver lasting results.
Contact Eagle Rivet Roofing today to schedule an inspection or learn more about how built-up roofing can protect your commercial property for decades to come.
FAQs About Built-Up Roofing
1. How long does built-up roofing last?
When properly installed and maintained, built-up roofing can last 25 to 30 years or longer. Regular inspections and timely repairs help extend the lifespan of the system, especially in areas like Boston where weather conditions can be harsh.
2. Is built-up roofing energy efficient?
Yes. Built-up roofing can be energy efficient, especially when finished with reflective or light-colored coatings that help reduce heat absorption. This can lower cooling costs and improve comfort in commercial buildings during warmer months.
3. How is built-up roofing maintained?
Maintenance typically includes checking for cracks or blisters, clearing drains, monitoring surface wear, and inspecting flashing around vents and HVAC units. Routine maintenance twice a year helps prevent leaks and extends the life of the roof.
David Nietch graduated from Central Connecticut State University with a Bachelor of Science in Business Management and Organization. He has a strong background in positions which require experienced operation and project management as well as a strong attention to detail. David has a profound knowledge of concepts, competitive products, practices and process dealing with the roofing market.
