Built-Up Roofing (BUR) Tulsa, OK
Commercial Installation & Repair
Built-up roofing — commonly called BUR or tar-and-gravel — is one of the most proven commercial flat roofing systems in use. A BUR system consists of multiple alternating layers of bitumen and reinforcing felt or fabric, topped with gravel surfacing or a smooth cap sheet. The defining structural advantage of BUR is redundancy — no single point of failure exists in a properly installed multi-ply system. This makes BUR the preferred specification for high-value commercial buildings where a single membrane puncture would produce unacceptable interior damage risk.
Where Built-Up Roofing Performs Best on Commercial Buildings
BUR’s multi-ply construction makes it the preferred system for commercial buildings with heavy rooftop foot traffic, large HVAC equipment requiring frequent service access, rooftop mechanical rooms, or structures where damage from a single membrane penetration would be costly. Industrial facilities, large commercial campuses, and buildings with complex rooftop mechanical infrastructure are natural candidates. For property managers overseeing high-value commercial assets, BUR’s redundancy is often the specification that institutional owners require.
- Multiple plies — no single point of failure, the defining commercial advantage of BUR
- Gravel surfacing — UV protection, impact resistance, ballast weight
- Class A fire rating with gravel or cap sheet surfacing
- Superior resistance to foot traffic and mechanical equipment loads
- 30+ year service life on well-maintained systems
- No membrane seams — continuous multi-ply construction eliminates seam as failure point
- Compatible with a wide range of commercial building substrates
BUR vs. Single-Ply Systems — The Commercial Decision Framework
Single-ply systems like TPO and EPDM are faster to install and typically lower cost upfront. BUR’s premium is justified for buildings where rooftop access demands, mechanical loads, or institutional ownership standards require the redundancy that single-ply systems cannot provide. For large commercial properties, many facility managers specify BUR in high-traffic rooftop sections and single-ply systems on simpler, less-accessed sections — a zone-based approach that optimizes performance and cost across the full roof area.
Built-Up Roofing Repair and Restoration
BUR systems can often be restored with localized repairs and a commercial roof coating that extends service life 10-15 years at a fraction of replacement cost. When existing plies are moisture-saturated or structurally compromised, a full tear-off and replacement is the appropriate path. Our inspection includes core sampling and infrared moisture scanning to give you a definitive assessment before any recommendation is made.
FREQUENTLY ASKED QUESTIONS
Well-installed and properly maintained BUR systems regularly achieve 30+ years of service life. The multi-ply construction provides a lifespan advantage over most single-ply systems. Annual drainage maintenance and prompt repair of surface issues are the most important factors in maximizing BUR longevity.
BUR typically has a higher upfront installation cost due to labor intensity and material weight. Over a 30+ year lifecycle, the total cost of ownership often competes favorably with single-ply systems because replacement cycles are less frequent. We provide lifecycle cost comparisons alongside installation estimates so ownership teams can make system selections based on total cost rather than installation cost alone.
Yes, when the existing plies are structurally sound and dry. Localized BUR repairs are straightforward. A roof coating system can also extend a BUR roof’s service life significantly when the substrate is in acceptable condition. Our inspection includes core testing and moisture scanning to assess ply integrity before repair vs. replacement is recommended.