Time-tested protection with over 100 years of proven performance. Built-Up Roofing delivers unmatched durability through multiple layers of bitumen and reinforcing fabrics, finished with a protective gravel surface.
Built-Up Roofing (BUR) is one of the oldest and most reliable commercial roofing systems available. It's constructed by alternating layers of bitumen (asphalt) with reinforcing fabric sheets, creating a thick, durable, waterproof membrane. The top is typically finished with gravel, slag, or a mineral cap sheet for UV protection and fire resistance.
A reinforced base sheet is mechanically fastened or adhered to the roof deck to create a solid foundation.
Multiple layers of hot bitumen (asphalt) are applied alternated with reinforcing ply sheets. Each layer adds strength and waterproofing.
A top pour of hot bitumen seals the entire system, creating a monolithic waterproof barrier across the roof.
The final protective layer of gravel or mineral cap sheet provides UV protection, fire resistance, and impact durability.
With over 100 years of proven performance, BUR systems have stood the test of time. A properly installed BUR roof can last 20-30 years with regular maintenance.
Multiple layers of bitumen create a seamless, monolithic waterproof membrane. The flood coat ensures there are no seams for water to penetrate, providing unmatched leak protection.
The gravel or mineral surface provides excellent fire resistance, often achieving Class A fire ratings — the highest level available for roofing materials.
The protective gravel surface can withstand heavy foot traffic from maintenance workers, HVAC technicians, and other rooftop access without compromising the roof's integrity.
The layered construction and gravel surfacing absorb impacts from hail, falling debris, and rooftop activity better than most single-ply membrane systems.
When damage does occur, BUR systems can be easily patched and repaired by adding additional layers of bitumen and fabric without requiring a full roof replacement.
Built-Up Roofing is the go-to choice for specific commercial applications where durability and long-term performance are paramount.
Office buildings, retail centers, and mixed-use developments benefit from BUR's proven waterproofing and long service life. The system's weight also helps with wind uplift resistance on large roof expanses.
Manufacturing plants, warehouses, and distribution centers require roofs that can withstand harsh conditions. BUR's impact resistance and durability make it ideal for industrial environments.
Buildings with rooftop equipment like HVAC units, solar panels, or regular maintenance access need a roof that can handle foot traffic. The gravel surface provides excellent wear resistance.
Schools, hospitals, and government buildings need reliable roofing that lasts decades. BUR's proven track record and fire resistance make it a preferred choice for public institutions.
| Feature |
BUR
|
TPO | PVC | Mod. Bitumen |
|---|---|---|---|---|
| Lifespan | 20-30 Years | 15-30 Years | 20-35+ Years | 15-25 Years |
| Waterproofing | Excellent | Good | Very Good | Excellent |
| Fire Resistance | Class A | Class A | Class A | Class A |
| Foot Traffic | Excellent | Fair | Good | Very Good |
| Energy Efficiency | Moderate | Excellent | Very Good | Moderate |
| Installation Cost | Moderate-High | Low-Moderate | High | Moderate |
| Repairability | Easy | Moderate | Moderate | Easy |
Highlighted column indicates where BUR excels compared to alternatives
While BUR systems are incredibly durable, proper maintenance extends their lifespan and protects your investment. Here's what you need to know about keeping a BUR roof in top condition.
Professional inspections twice a year (spring and fall) catch potential issues before they become costly problems.
Keeping the roof clear of leaves, branches, and debris prevents ponding water and extends the life of the surface layer.
Regular cleaning of drains, gutters, and scuppers ensures proper water flow and prevents standing water that can degrade the roof.
Applying a reflective coating every 5-10 years reduces heat absorption, lowers energy costs, and extends the roof's service life.
Our team of experienced commercial roofing specialists will assess your building, provide a detailed quote, and deliver a Built-Up Roofing system that protects your investment for 20-30 years or more.