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Built-up Roofing Damage Explained
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Built-up roofing damage can lead to serious water intrusion and structural issues if not addressed promptly.
Understanding common causes of built-up roof (BUR) damage helps you prevent costly repairs and protect your property.
TL;DR:
- Built-up roofs (BUR) consist of alternating layers of asphalt and reinforcing materials topped with gravel.
- Common damage includes blisters, cracks, and punctures from weather, foot traffic, and age.
- These issues can lead to significant leaks, mold growth, and structural weakening.
- Regular inspections and prompt repairs are key to extending the life of your BUR.
- Professional assessment is crucial for identifying the extent of damage and the best repair strategy.
Built-Up Roofing Damage Explained
Built-up roofing, often called tar-and-gravel roofing, is a popular choice for flat or low-slope roofs. It’s known for its durability. But like any roof, it can suffer damage over time. This can happen due to various factors. Understanding these issues is the first step to protecting your investment.
What Exactly Is Built-Up Roofing?
Think of a built-up roof as a layered cake. It typically involves multiple plies of felt or reinforcing fabrics. These are saturated with asphalt or coal tar. Each layer is mopped down. The top layer is usually coated with gravel or mineral aggregate. This gravel protects the asphalt from UV rays. It also helps with fire resistance.
Common Types of Built-Up Roof Damage
Several things can go wrong with a BUR system. You might see blisters forming on the surface. These are trapped air or moisture pockets under the asphalt. Cracks can appear, especially in extreme temperatures. Punctures from falling branches or foot traffic are also common. Severe weather can really take a toll.
Blisters and Burlap Tears
Blisters are a common cosmetic and functional issue. They can grow over time. If a blister breaks, it exposes the underlying layers. This can lead to immediate leaks. We found that preventing moisture from getting trapped during installation is key.
Cracks and Splits
Temperature swings cause materials to expand and contract. Over years, this can lead to stress. Cracks and splits might appear, especially at seams or edges. These openings are direct pathways for water. Ignoring them means water can seep into your building.
Punctures and Foot Traffic Damage
BUR systems are not meant for heavy foot traffic. While designed to be walked on, excessive or careless movement can cause damage. Dropped tools, sharp debris, or even repeated walking in the same spots can puncture the roof. This often happens around HVAC units or maintenance access points.
Gravel Displacement
The protective gravel layer can become dislodged. Wind, heavy rain, or improper maintenance can sweep it away. When the gravel is gone, the asphalt is exposed. This leads to faster deterioration. It also makes the roof more vulnerable to other types of damage.
The Impact of Built-Up Roof Leaks
When your built-up roof is compromised, leaks are often the first sign. Water can find its way through tiny openings. It then travels through insulation and ceiling materials. This can cause stained ceilings, peeling paint, and damaged walls. But the damage doesn’t stop there. We found that water damage can spread quickly indoors.
Interior Water Intrusion
A small leak can seem minor. However, water can travel surprising distances under roofing materials. It might appear far from the actual roof breach. This makes locating the source of the leak tricky. You might see water damage in an area that seems unrelated to the roof.
Mold and Mildew Growth
Moisture trapped within your building’s structure is a breeding ground for mold. Mold can start growing within 24-48 hours. It poses serious health risks. Breathing in mold spores can cause respiratory problems and allergic reactions. This is a serious health risk that needs immediate attention.
Structural Weakening
Persistent leaks can saturate insulation and wood structures. This compromises their integrity. Wet wood can rot over time. This can lead to sagging ceilings or even structural collapse in severe cases. The weight of standing water on a damaged roof also adds stress.
How to Address Built-Up Roofing Damage
Dealing with BUR damage requires a systematic approach. It’s not a DIY job for most homeowners. You need to identify the problem and then decide on the best solution. This often involves professional help.
Inspection is Key
Regular roof inspections are vital. Experts can spot potential problems before they become major disasters. They check for signs of wear, damage, and potential weak spots. A thorough inspection helps you understand the roof’s condition. It helps determine when to call a professional right away.
Repair vs. Replacement
Minor damage, like small cracks or displaced gravel, can often be repaired. Professionals can patch holes and reseal seams. They can also reapply protective coatings. However, if the damage is extensive, or the roof is nearing the end of its lifespan, replacement might be necessary. Research shows that timely repairs can significantly extend a roof’s life.
Understanding Insurance Coverage
When damage occurs, you’ll want to know what insurance usually will cover. Policies vary, but most cover damage from sudden and accidental events like storms. Wear and tear or lack of maintenance might not be covered. It’s important to have detailed records of your roof’s history. This can be crucial when claims are often denied due to insufficient proof of damage or maintenance.
When Do Built-Up Roofs Need Replacement?
Built-up roofs have a decent lifespan, often 15-30 years depending on maintenance and climate. As they age, they become more susceptible to damage. If you notice widespread cracking, numerous blisters, or recurring leaks that are difficult to repair, it might be time for a new roof. It’s important to understand how roof leaks spread indoors and to act before it gets worse.
Protecting Your Built-Up Roof
Preventative measures are your best defense. Keep your roof clear of debris. Ensure gutters are clean and draining properly. Trim overhanging branches. Address any minor issues you spot immediately. This approach helps maintain the integrity of your roofing system.
Regular Maintenance Schedule
Set up a schedule for professional roof inspections. We found that at least once a year is recommended, with an extra check after severe weather. This helps catch problems early. It also ensures what happens during restoration is efficient and effective.
Addressing Foot Traffic
If your roof requires frequent access for maintenance, ensure proper protocols are followed. Use designated walkways and protect the surface. This minimizes the risk of punctures and premature wear. It’s about being mindful of the roof’s limitations.
Storm Preparedness
In areas prone to high winds or storms, ensure your roof is properly secured. While not always a BUR feature, understanding things like how roof straps and hurricane clips explained can help understand overall roof integrity. A well-maintained roof is more resilient.
Who Is Responsible for Repairs?
This can be a tricky question. If you own the property, generally, you are responsible for roof maintenance and repairs. However, if you rent, the landlord is usually responsible. If a contractor performed faulty work, then there can be questions about who is responsible for repairs. It’s important to know your rights and responsibilities.
Documentation is Crucial
Keep good records of all inspections, maintenance, and repairs. This documentation is essential. It helps track the roof’s history. It’s also vital for insurance claims. You’ll need good receipts, records, and proof of value for claims. This shows you’ve taken reasonable care of the roof. It can also clarify what insurance usually will cover.
Conclusion
Built-up roofing offers excellent protection when properly installed and maintained. However, damage can occur, leading to leaks and structural issues. Regular inspections, prompt repairs, and understanding your roof’s limitations are key to its longevity. If you suspect your built-up roof has sustained damage, don’t delay in seeking expert advice. Water Damage Restoration Lewisville understands the urgency of these situations and can help assess and address roof-related water damage effectively, ensuring your property remains safe and sound.
What are the signs of a failing built-up roof?
Look for visible signs like widespread cracking, blistering, or areas where the gravel has worn away. Recurring interior leaks, water stains on ceilings or walls, and sagging areas are also strong indicators. If you notice these, it’s time to get an expert opinion.
Can minor damage to a built-up roof be repaired?
Yes, many minor issues can be repaired. Small cracks can be sealed, and areas with lost gravel can be re-covered. Professionals can often extend the life of the roof with timely repairs. However, extensive damage may necessitate a full replacement.
How often should a built-up roof be inspected?
It’s generally recommended to have your built-up roof inspected at least once a year. An additional inspection after severe weather events, such as heavy storms or high winds, is also wise. This helps catch any new damage promptly.
Is built-up roofing noisy during rain?
Compared to some lighter roofing materials, built-up roofs can be quieter during rain. The multiple layers of asphalt and the gravel top provide good sound dampening. This can be a benefit in reducing noise pollution from weather.
What is the lifespan of a typical built-up roof?
With proper installation and regular maintenance, a built-up roof can last between 15 to 30 years. Factors like climate, the quality of materials used, and the frequency of maintenance can influence its actual lifespan. Understanding the lifespan of different roof materials explained can help set expectations.

Joseph Duval is a licensed Damage Restoration Expert with over 20 years of hands-on experience in disaster recovery and property mitigation. As a seasoned industry authority, Joseph has dedicated two decades to mastering the technical complexities of structural drying and environmental safety, providing homeowners with the reliable expertise and steady leadership required to navigate high-stress property losses.
𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: Joseph holds elite IICRC credentials, including Water Damage Restoration (WRT), Applied Structural Drying (ASD), Mold Remediation (AMRT), Fire and Smoke Restoration (FSRT), and Odor Control (OCT).
𝗙𝗮𝘃𝗼𝗿𝗶𝘁𝗲 𝗣𝗮𝘀𝘁𝗶𝗺𝗲: When off-site, Joseph is a passionate woodworker and an avid hiker who finds balance in the precision of craftsmanship and the tranquility of nature.
𝗕𝗲𝘀𝘁 𝗣𝗮𝗿𝘁 𝗼𝗳 𝘁𝗵𝗲 𝗷𝗼𝗯: He finds the most fulfillment in providing a clear path forward for families, turning a site of devastation back into a safe, comfortable home.
