Built Up Roofing and Repairs

Built up roofing, often called BUR, has protected low slope buildings for more than a century. The system uses multiple layers of asphalt or cold adhesive, reinforced with plies. A protective surfacing of gravel or a cap sheet finishes the assembly. Because layers work together, BUR offers dependable waterproofing and impressive durability. Hardesty Roofing repairs and maintains BUR systems across Richmond, Charlottesville, the Tri Cities, Northern Neck, and Tidewater.

What Is a Built Up Roofing System

A BUR roof is created by alternating bitumen and reinforcing sheets. The plies are embedded in hot asphalt or applied with cold adhesives. A final flood coat receives gravel or a mineral surfaced cap sheet. That surface protects against the sun, hail, and foot traffic. The result is a monolithic membrane that resists punctures and weather.

Key Advantages of BUR

Owners choose BUR for its proven track record. Multiple plies create redundancy that continues to seal if one layer is breached. Gravel surfacing shields the membrane from ultraviolet exposure and impact. The system also handles rooftop traffic better than many single ply membranes. The heavier assembly reduces sound transmission. With proper maintenance, BUR frequently delivers very long service lives.

Drawbacks to Consider

Every roofing system involves tradeoffs. BUR weighs more than single ply membranes and may require structural review. Installation can be slower because each layer must be installed carefully. Hot asphalt can create odor during application, which some sites dislike. Ponding water still stresses any flat roof, including BUR. Reflectivity may be lower without a reflective coating or cap sheet. Repairs demand experienced technicians who understand materials and proper sequencing.

Common BUR Problems You Might See

Even strong roofs need care as they age. Alligatoring occurs when the surface oxidizes, forming small cracks that resemble alligator skin. Blistering occurs when air or moisture is trapped between plies. Ridges or splits can form along felts as the roof expands and contracts. Gravel loss exposes the flood coat to sunlight and accelerates its aging. Open laps at seams invite water and debris. Flashings at walls, parapets, and penetrations often fail before the field membrane. Ponding water stresses asphalt, encourages algae growth, and reveals weak points.

How Hardesty Diagnoses BUR Roofing Issues

Effective repair starts with accurate diagnosis. Our technicians begin with a detailed visual inspection and moisture mapping. Probes and core cuts help confirm saturated areas and membrane condition. We also evaluate drains, scuppers, and protective walkways. The goal is to identify root causes rather than surface symptoms. Findings are then organized into a clear repair plan with photos and priorities.

Typical Repairs for Built Up Roofing

Many BUR problems are very repairable. Small blisters are cut, dried, and patched with new reinforcing and bitumen. Larger blisters that remain tight and dry may be left intact to avoid damage. Open laps are cleaned, re-cemented, and reinforced with additional ply material. Alligatoring is often corrected with a compatible coating or a new cap sheet. Areas with missing gravel are reflooded and reballasted for protection. Flashings are rebuilt with new base sheets, cant strips, and secure terminations. Ponding can be reduced by adding tapered insulation around low areas and drains.

When Repairs Give Way to Restoration

Some roofs reach a point where spot repairs are no longer sensible. Widespread saturation or repeated leaks indicate deeper deterioration. In these cases, restoration can extend life without full replacement. An asphalt emulsion with polyester reinforcement can create a new surface. Elastomeric or aluminum coatings add reflectivity and slow aging. A recovering with a new cap sheet can also be viable when insulation remains dry. At Hardesty, we can explain options, costs, and expected service life so you can plan confidently.

Signs That Full Replacement Is the Better Path

Replacement becomes the smart choice when moisture is widespread. Frequent failures across seams and flashings are another indicator. A roof near the end of its expected life should be evaluated honestly. Structural deck damage or severe blister fields also push toward replacement. In many cases, a new system can incorporate tapered insulation to improve drainage. Our team designs solutions that consider energy, code requirements, and budget.

Pros and Cons Recap for Decision Making

BUR excels in redundancy, traffic resistance, and longevity. The system tolerates incidental damage better than many alternatives. However, the assembly is heavier and slower to install. Reflectivity may require added coatings or cap sheets. Odor during hot application can require planning with occupants. Skilled installers are essential for durable results.

Maintenance Practices That Protect Your Investment

Proactive care keeps BUR performing for years. Semiannual inspections catch small issues early. Drains and scuppers should remain clear to prevent ponding. Debris must be removed to keep the gravel evenly distributed. Sealants at pitch pans and penetrations need periodic renewal. Protective walk pads should be placed on service paths for equipment. After major storms, a quick check can prevent minor damage from escalating.

How BUR Roofing Compares to Other Flat Roofs

Owners often weigh BUR against TPO, EPDM, and PVC roofing systems. Single ply systems are lighter and faster to install. BUR offers toughness and multiple layers of waterproofing. A reflective BUR cap sheet narrows the energy difference. The right choice depends on building use, access needs, and budget. Hardesty presents unbiased comparisons so you can make an informed decision.

Materials and Quality Matter

Not all bitumen and felts perform the same. High quality plies, compatible adhesives, and well graded gravel are essential. Terminations and flashings must meet manufacturer standards. Our team partners with leading manufacturers for consistent results. Craftsmanship and materials work together to create lasting value. That philosophy has guided our company since 1990.

Why Choose Hardesty Roofing for BUR Repairs

Experience is critical with layered systems. Hardesty Roofing brings decades of BUR know-how to every project. Crews are trained to work safely and protect occupied buildings. Communication is clear from inspection through closeout. We document conditions and deliver practical, cost conscious recommendations. Repairs are performed using manufacturer approved methods and materials.

Service Area and Commitment

Homeowners and businesses across Richmond rely on our team. Clients in Charlottesville value our responsive scheduling and thorough reporting. Property owners in the Tri Cities, Northern Neck, and Tidewater trust our workmanship. The same standards guide our siding and window services. Quality materials and skilled hands define every service we offer. Your roof deserves that level of care.

Plan Your Next Steps

If you see blisters, alligatoring, or ponding, now is the time to act. Early attention keeps costs lower and extends roof life. A professional assessment will separate quick fixes from deeper needs. Hardesty Roofing is ready to evaluate your BUR system. We will explain the findings and outline the most cost effective repairs. Together, we can protect your building and budget.

Schedule a BUR Roofing Evaluation Today

A strong roof supports safe, efficient operations every day. Built up systems deliver that strength when maintained correctly. Reach out to Hardesty Roofing for a comprehensive inspection. Our team will tailor repairs to your roof and your goals. Expect clear communication, careful workmanship, and dependable results. Your roof will be ready for the seasons ahead.