Built-Up Roofing (BUR)

Built-Up Roofing (BUR) or “hot tar and gravel” is roof system that uses several layers of hot asphalt in between supporting layers of bitumen.

• High strength
• Puncture resistance
• High life expectancy
• Good weather protection
• Top surfacing available (cool roof option)

Why Building Owners Continue to Choose BUR Roofing

Even with the popularity of newer roofing systems like TPO, many building owners continue to choose Built-Up Roofing (BUR) because of its proven durability and long-term performance. BUR systems have protected commercial buildings in Minneapolis and throughout Minnesota for decades and remain an excellent option for many facilities.

BUR roofing is especially well suited for:

• Apartment buildings
• Industrial and manufacturing facilities
• Warehouses
• Schools
• Churches
• Office buildings

When properly installed and maintained, BUR roofs provide outstanding puncture resistance, reliable waterproofing, and dependable performance in Minnesota’s demanding climate.

Product Features:

• Warranty ranges from 5 to 30 years
• Available in:
  • 4 ply (Standard application)
  • 2 ply (Soprema application)
• Color options:
• White roof coating (UV protection)

Application Methods:

• Ballasted BUR (most common application)
• Coatings
• Cap Sheet

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⭐ Building Owner Tip

Many BUR roofs are replaced before they’re truly worn out because small maintenance issues were ignored for too long. Routine inspections and timely repairs can often extend the life of your existing roof, helping you delay a major capital expense while protecting your building and tenants.

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Frequently Asked Questions About Built-Up Roofing (BUR) in the Twin Cities and throughout Minnesota

 

Built-Up Roofing (BUR), often referred to as a “hot tar and gravel roof,” is a commercial roofing system made of multiple layers of asphalt and reinforcing fabrics. These layers create a durable, watertight membrane that has been trusted on commercial buildings for decades throughout Minnesota.

 

A properly installed and maintained BUR roof can last 20 to 30 years or more, depending on the number of plies, weather exposure, maintenance, and overall roof condition. Regular inspections and timely repairs help maximize the lifespan of a BUR roofing system.

 

Many BUR roofs can be successfully repaired without requiring a complete replacement. If leaks are identified early, repairs to flashing, drains, seams, or localized damaged areas can often extend the life of the roof. A professional inspection can determine whether repairs or replacement provide the best long-term value.

 

BUR roofing systems have a long history of reliable performance in the Greater Minneapolis, Minnesota area. Their multiple layers provide excellent durability, puncture resistance, and weather protection, making them a popular choice for warehouses, manufacturing facilities, schools, apartment buildings, and other commercial properties.

 

Rayco Construction recommends having your BUR roof professionally inspected at least twice a year, typically in the spring and fall, as well as after major storms. Regular inspections help identify small maintenance issues before they develop into costly leaks or structural damage.