Traditional built-up roofing (BUR) derives its name from the building of a roof on-site using layers of base sheet, inter-ply sheets, and cap sheet or other surfacing such as gravel or liquid coating.
Hot asphalt (bitumen) is the bonding and waterproofing agent between layers.
BUR is suitable for most low slope roofing applications. The higher the quality of the BUR materials and asphalt used and the greater the number of plies (and separate asphalt mopping’s), the more superior the roof system.
Started in the 1840′ Built-Up Roofing (BUR) is one of the oldest and most reliable commercial roofing systems for buildings with low-slope or “flat” roof structures. These systems are often referred to as “tar and gravel” roofs. BUR consists of multiple plies of roof felts laminated together with bitumen. BUR also consists of bitumen-saturated organic-fiber, fiberglass, or polyester felt. A top-surfacing or a glaze coat of asphalt, aggregate (gravel or slag), fibered, or non-fibered coatings engineered for roof coating, or a granule-surfaced cap sheet.
Built up Roofing
Depending on the needs of the building owner, BUR may be designed and specified to meet a broad range of building waterproofing applications,. These systems range from very basic systems designed to be vigorously maintained to upper-end systems that are constructed to qualify for a manufacturer’s warranty. Roofing manufacturers, working in close coordination with roofing contractors, will write long-term warranties for building owners based on specific design criteria. Some warranties even qualify for decades of “full-value” labor and materials coverage. Jordan Roof LA can furnish you with more details.
Jordan Roof LA and BUR Roofing Systems have earned a great reputation over the years, with building owners, architects, engineers, and roofing product manufacturers. The original cost of a BUR system may be greater than other low-slope applications, but when taking the long view, BUR often comes out a winner. BUR enjoys a track record that is over 150 years old, provides a thick, durable roof covering, may be used in a broad range of building waterproofing applications, and after many years of service may be maintained and repaired for extended life (many other systems must be completely replaced).
Benefits of Built Up Roofing
- Superior waterproofing characteristics
- High tensile-strength
- Competitive life-cycle cost
- Long-term warranties are available with many BUR systems
- Proven track record of performance
- Broad range of application methods
- Available as part of a fire, wind, and/or hail rated roofing system
- Wide choice of top-surfacing, including “Cool Roofing” options
- With insulation, provides an even better-performing building component
Jordan Roof LA specializes in Built-Up, Low slope commercial roofing and has been serving Southern California for over 30 years.
Call us today for a free estimate 877-628-5556 or contact us online!