Overview
Built-up roofing, commonly known as BUR or tar-and-gravel roofing, is the original multi-ply flat roofing technology with a performance history spanning more than 120 years. The system construction is elegantly simple: alternating layers of reinforcing fabric and hot bitumen are built up on the roof deck to create a monolithic, multi-ply waterproofing membrane. A surfacing layer of gravel, mineral granules, or reflective coating protects the built-up plies from UV radiation and physical damage. This layered construction creates a roof assembly of remarkable durability and redundancy that has protected some of America's most significant commercial buildings for decades.
Despite the emergence of single-ply membranes and modified bitumen, built-up roofing retains a significant presence in the commercial roofing market because its strengths are well matched to specific applications. The gravel surfacing provides exceptional protection against foot traffic, tool drops, and mechanical impact. The multi-ply construction means that a single puncture does not penetrate to the deck as it would with a single-ply membrane. The mass and thermal inertia of the system moderates temperature swings at the membrane level. And the system's long track record means its behavior over time is thoroughly understood and predictable.
Newark Quality Roofing maintains BUR capability with crews trained in hot-asphalt application, a skill set that has become less common as single-ply membranes have gained market share. For buildings where BUR's specific advantages align with the building's needs, or for existing BUR roofs that need restoration or recover, our ability to work with this traditional system provides options that many modern contractors cannot offer. We also perform BUR-to-single-ply conversions for buildings transitioning to newer technology when replacement timing aligns with the owner's preference for updated roofing systems.
The science behind BUR's durability lies in its composite construction, which mirrors the engineering principle used in fiberglass, plywood, and other laminated materials where alternating layers of different materials create an assembly that exceeds the strength of any individual component. In a typical four-ply BUR system, each reinforcing fabric ply is fully mopped in hot asphalt, creating four independent waterproofing layers that must all be compromised before a leak reaches the deck below. This redundancy is the foundation of BUR's exceptional puncture resistance -- a dropped tool or heavy equipment leg that would puncture a single-ply membrane in an instant may dent the BUR surface but rarely penetrates through all four plies to create an active leak. The gravel surfacing adds an additional 300 to 400 pounds per 100 square feet of armor that protects the membrane plies from UV radiation, hail impact, and foot traffic abrasion, while the thermal mass of the gravel layer moderates temperature swings at the membrane level, reducing the thermal stress cycling that ages all roofing materials over time.
BUR system specifications vary based on the number of plies, reinforcing fabric type, asphalt grade, and surfacing material. Three-ply systems provide economical waterproofing for standard applications, while four-ply and five-ply configurations deliver premium redundancy for high-value buildings or demanding service conditions. The reinforcing fabric selection between fiberglass and polyester affects fire performance, dimensional stability, and puncture resistance, with fiberglass offering superior fire characteristics and polyester providing better elongation for buildings subject to structural movement. Asphalt type -- from Type I (low-slope) through Type IV (steep-slope) -- is specified based on roof slope and climate conditions to ensure the asphalt remains stable at the roof surface temperatures experienced during Essex County summers while maintaining flexibility during winter.
500+ projects completed in Essex County
15+ years serving Essex County · GAF Certified Contractor · Fully insured and bonded
Signs You Need Built-Up Roofing
- Your existing BUR roof shows widespread alligatoring, cracking, or bald spots where the gravel surfacing has migrated
- Blisters have developed across the BUR surface, indicating moisture trapped between plies that is causing delamination
- The roof supports exceptionally heavy traffic from equipment service, mechanical staging, or pedestrian use
- You want a roofing system with multiple redundant waterproofing layers rather than a single membrane
- The existing BUR is sound but needs resurfacing with new gravel or a reflective coating to extend its remaining life
- Budget and lifecycle analysis favors the long-proven BUR system over newer alternatives for your specific application
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Our Built-Up Roofing Approach
BUR installation is a craft that combines precision timing with efficient material handling. Hot asphalt must be applied within a specific temperature window -- hot enough to bond the reinforcing fabric fully but not so hot that it damages the fabric or creates excessive fumes. Our kettlemen maintain asphalt temperature within the manufacturer's specified range, and our application crews work in coordinated sequences that place each ply while the asphalt is at optimal bonding temperature. This coordination between kettle operation and field application is the key quality variable in BUR installation.
Modern BUR systems have evolved beyond the traditional felt-and-tar construction. Fiberglass reinforcing fabrics have replaced organic felts, providing better dimensional stability, moisture resistance, and fire performance. Asphalt formulations have been refined for better adhesion and flexibility. And hybrid systems that combine BUR base plies with a modified bitumen cap sheet capture the advantages of both technologies -- the redundancy of multiple BUR plies with the surface performance of modified bitumen.
For existing BUR roofs in serviceable condition, restoration through resurfacing can extend the system's life significantly at a fraction of replacement cost. The existing gravel is removed or consolidated, any damaged areas are repaired, and a new surfacing layer is applied. Reflective coatings can transform a heat-absorbing dark BUR surface into an energy-efficient cool roof while providing UV protection that extends the membrane plies' service life.
The kettle operation that heats roofing-grade asphalt to application temperature is a specialized craft requiring trained operators who monitor temperature continuously throughout the work day. Asphalt must be heated within a precise range -- typically 400 to 475 degrees Fahrenheit depending on the asphalt type and manufacturer specifications -- to achieve the viscosity needed for full ply adhesion. Overheating the asphalt degrades its weathering properties, while underheating produces incomplete bonding between plies. Our kettle operators use calibrated thermometers and maintain detailed temperature logs that document compliance with manufacturer specifications, records that become part of the project documentation required for warranty qualification. The coordination between kettle operation and rooftop application crews is choreographed so that hot asphalt arrives at the application point within the optimal bonding temperature window, an operational discipline that distinguishes experienced BUR contractors from general roofing companies attempting work outside their core expertise.
Built-Up Roofing for Residential Properties
Built-up roofing is occasionally found on older residential buildings in Essex County, particularly on large flat-roof homes, apartment buildings, and mixed-use properties built during the mid-twentieth century when BUR was the dominant flat roofing technology. For these existing residential BUR roofs, we provide maintenance, repair, and resurfacing services that extend the system's useful life. When replacement becomes necessary, we can install a new BUR system or transition to a modern single-ply membrane depending on the owner's preference and the building's specific requirements.
For new residential flat roof installations, BUR is less commonly specified than modern alternatives because single-ply membranes provide comparable waterproofing performance with lighter weight, simpler installation, and lower cost for the typical residential flat roof section. However, for residential applications where exceptional puncture resistance is needed, such as rooftop terraces or decks, BUR with a smooth or paver surface can provide a robust substrate that supports regular foot traffic without the membrane damage concerns associated with thinner single-ply materials.
Residential BUR maintenance focuses on gravel redistribution, drain clearing, and monitoring for blisters or bare spots in the surfacing. Annual inspection catches developing issues before they become leaks. We provide residential BUR maintenance services that keep these durable systems performing reliably for the homeowners who have them.
Multi-family apartment buildings and residential complexes throughout Newark, East Orange, and Belleville often have existing BUR roofs installed during original construction in the 1950s through 1980s. For these properties, our BUR expertise provides continuity with the original construction technology while offering modern restoration options that extend service life at a fraction of full replacement cost. When building owners decide to transition from BUR to single-ply membrane, our experience with both systems ensures a clean conversion that properly addresses the interface between old and new construction, manages insulation upgrades to current energy code standards, and provides the warranty protection that modern commercial roofing products deliver.
Commercial Built-Up Roofing
For commercial buildings where the roof must withstand heavy foot traffic, equipment staging, and mechanical abuse, BUR remains a compelling choice. Industrial facilities, maintenance shops, and buildings with rooftop mechanical equipment that requires regular service benefit from BUR's inherent toughness. The gravel surfacing distributes point loads across the membrane plies, and the multiple ply construction provides damage tolerance that single-layer membranes cannot match. When a dropped tool punctures a single-ply membrane, it creates a leak. When it strikes a BUR surface, the gravel absorbs the impact and the redundant plies beneath maintain waterproofing integrity.
Commercial BUR warranties are typically backed by the asphalt and reinforcing fabric manufacturers, with terms ranging from 10 to 20 years depending on the number of plies and the system configuration. Premium hybrid systems combining BUR plies with modified bitumen cap sheets can achieve warranty terms comparable to single-ply systems. Our manufacturer relationships and installation quality qualify your project for the maximum warranty tier available for BUR systems.
For commercial buildings currently protected by BUR that is approaching end of life, we present three options: full BUR replacement, BUR restoration through resurfacing and spot repair, or conversion to a modern single-ply membrane system. Each option has distinct advantages in cost, disruption level, and long-term performance. We provide objective analysis of all three approaches so you can make the most informed decision for your building's specific situation and your ownership timeline.
Lifecycle cost analysis for BUR systems on commercial buildings reveals a compelling value proposition when the analysis period extends to 30 or 40 years. Although the initial installed cost of BUR is comparable to or slightly higher than single-ply alternatives, the system's exceptional service life of 25 to 40 years -- and the option to restore rather than replace at mid-life -- can produce the lowest annualized roofing cost of any flat roof system for buildings that experience heavy traffic or mechanical equipment service activity. Essex County industrial facilities, warehouse distribution centers, and multi-story office buildings with extensive rooftop HVAC installations benefit most from BUR's damage tolerance, where the reduced repair frequency and the ability to perform localized restoration rather than system-wide replacement generate cumulative savings that offset the modest initial cost premium. For building owners evaluating BUR against single-ply membranes, we provide detailed lifecycle cost projections using ASTM E917 methodology that quantify the total cost of each alternative over the building's planned ownership period, giving facility managers and ownership groups the financial data needed to make informed capital allocation decisions.
Our Process
System Design
Specify the number of plies, reinforcing fabric type, asphalt grade, insulation configuration, and surfacing treatment appropriate to your building's traffic, performance, and code requirements.
Deck Preparation
Remove existing roofing as needed, repair deck deficiencies, and install rigid insulation in the designed configuration with proper drainage slope and coverboard.
Base Ply Installation
The first reinforcing fabric ply is mechanically attached or adhered to the prepared substrate, creating the foundation of the multi-ply assembly.
Interply and Cap Ply Construction
Successive plies of reinforcing fabric are applied in hot asphalt, with each ply oriented to cross the preceding layer for maximum strength. The cap sheet completes the membrane assembly.
Surfacing and Protection
Gravel aggregate is embedded in flood-coat asphalt for traditional BUR, or reflective coating is applied for cool-roof performance. Walkway pads protect high-traffic areas.
Inspection and Completion
The completed assembly is inspected for proper ply adhesion, surfacing coverage, and flashing integrity. Documentation and warranty registration are finalized.
Built-Up Roofing Pricing in Essex County
Typical Price Range
$5–$9/sq ft
Cost Factors:
- Building square footage and roof area
- Membrane system selected (TPO, EPDM, PVC, modified bitumen)
- Insulation requirements and R-value targets
- Phasing requirements to maintain business operations
0% financing available on qualifying projects. Ask about our flexible payment plans when you call for your free estimate.
Why Choose Newark Quality Roofing for Built Up Roofing
Licensed & Certified Experts
NJ HIC licensed, GAF Certified Contractor with 15+ years of hands-on experience across Essex County. Every project meets the highest industry standards.
Transparent, Upfront Pricing
Detailed written estimates before work begins. No hidden fees, no surprise charges. You know exactly what you're paying for before we touch your roof.
Premium Materials & Warranties
We install only top-tier products from GAF, CertainTeed, Owens Corning, and Firestone — backed by manufacturer warranties up to 50 years.
Fast Response & Emergency Service
Same-day estimates and 24/7 emergency crews. When your roof needs attention, we're there — not next week, not tomorrow, today.
Local Team, Local Reputation
We live and work in Essex County. Our reputation rides on every job. We treat your property like it belongs to a neighbor — because it does.
Frequently Asked Questions
Is built-up roofing still a viable option compared to modern single-ply membranes?
How long does a built-up roof last?
Does built-up roofing produce odors during installation?
Can I convert my existing BUR to a single-ply membrane?
How much does built up roofing cost in Essex County, NJ?
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“They replaced our entire roof after storm damage and handled everything with our insurance company. The crew was professional, on time, and left the property spotless. Could not be happier with the result.”
Marcus Johnson
Newark, NJ · Roof Replacement
“We called for an emergency leak repair during a heavy rainstorm and they were at our door within two hours. Fast, honest, and fairly priced. They have a customer for life.”
Angela Morales
Montclair, NJ · Emergency Roof Repair