Built up roofs (BUR) have been a trusted roofing option for over a century, offering durability and cost-effectiveness for both residential and commercial properties. But what exactly is a built up roof, and why might it be the right choice for your home?
If you’re a homeowner exploring roofing options, this guide will explain everything you need to know in plain language. Here’s what we’ll cover:
- What is a built up roof?
- The installation process for a built up roof
- Maintenance tips to extend the lifespan of your BUR
🤔 What Is a Built Up Roof?
A built up roof (commonly abbreviated as BUR) is a type of roofing system consisting of multiple layers or “plies” of roofing felt, alternated with asphalt or bitumen and finished with a protective top layer like gravel or a reflective coating. It is primarily used on flat or low-slope roofs.
BUR gets its name from its construction process, as the roof is literally built up one layer at a time. The result is a durable, weather-resistant surface designed to withstand harsh conditions and provide excellent waterproofing.
Materials Used in Built Up Roofing
Built up roofs are made using specific materials selected for their performance and durability. Here’s a look at the key components:
- Base Layer: The first layer, usually made of roofing felt or fiberglass, provides a sturdy foundation for the other layers.
- Bitumen (Asphalt or Coal Tar): Acts as the adhesive and waterproofing agent, binding all layers together into a durable, uniform membrane.
- Reinforcing Ply: Additional layers of roofing felt or fabric increase strength and resistance to tearing.
- Top Coating: Gravel, mineral granules, or reflective coating protect against UV rays, weather damage, and foot traffic.
- Insulation (Optional): Improves thermal efficiency and reduces energy costs if added.
✅ 6 Step Installation Process for a Built Up Roof
The installation process for a built up roof involves precision and expertise to ensure optimal results. Here’s an overview of the typical steps:
1. Surface Preparation
The process begins with thoroughly cleaning and inspecting the existing roof. Any debris, such as leaves, dirt, or other materials, is removed to ensure a smooth working surface. Additionally, any visible damage, like cracks, punctures, or weak spots, is repaired to create a pristine and suitable base for the installation process. Proper preparation is crucial to ensure the longevity and effectiveness of the roofing system.
2. Base Layer Application
Once the surface is ready, the first base layer is applied. This typically consists of roofing felt or fiberglass sheets, which act as the foundation of the system. The base layer provides additional strength and stability while also serving as a barrier to prevent moisture from seeping into the structure. Ensuring this layer is applied correctly is vital to the roof’s overall performance.
3. Applying Bitumen
In this step, hot bitumen, which can be asphalt or coal tar, is evenly applied over the base layer. Bitumen acts as a strong adhesive, binding the layers together to create a waterproof seal. The material is heated to the appropriate temperature and spread carefully to avoid uneven application. This step ensures that the roof remains watertight and resistant to external elements like rain and snow.
4. Adding Reinforcing Layers
One or more ply sheets are applied over the layer of bitumen, followed by additional coats of hot bitumen. This process is repeated multiple times to create a strong, multi-layered membrane that is both durable and flexible. Each reinforcing layer increases the roof’s resistance to wear and tear, ensuring it can withstand various weather conditions over time.
5. Final Coating
The top layer serves as the roof’s final defense against external factors. Gravel or a reflective coating is applied to protect the roof from UV rays, which can degrade materials over time. The final coating also enhances durability by providing an extra layer of protection against physical damage and harsh weather. This step not only improves the roof’s functionality but also extends its lifespan.
6. Inspection
The process concludes with a detailed inspection to check that all layers are properly applied and the roof is completely sealed. Any defects, such as gaps, bubbles, or uneven sections, are addressed to ensure the roofing system is flawless. This final step guarantees the roof is ready to provide long-lasting protection and durability.
🛠️ Maintenance Tips to Extend the Lifespan of Your BUR
A built up roof requires minimal upkeep, but regular maintenance can extend its lifespan significantly. Here are a few tips:
Schedule Regular Inspections
Make it a habit to inspect your roof at least twice a year—once in the spring and once in the fall. Additionally, check your roof after severe weather events like storms or heavy winds, as these can cause hidden damage. Look for signs such as missing shingles, sagging areas, or any unusual wear and tear. Regular inspections can help you catch problems early before they escalate.
Clear Debris Promptly
Leaves, branches, and other debris can easily accumulate on your roof, especially after windy days. This buildup can lead to water pooling, which increases the risk of leaks and accelerates roof deterioration. Make sure to clear debris regularly to prevent unnecessary damage, and don’t forget to clean out your gutters as well, as clogged gutters can affect how water drains from your roof.
Address Minor Issues Early
Small cracks, leaks, or missing shingles might seem minor at first, but they should not be ignored. These small issues can quickly turn into larger, costly problems if left unaddressed. Repairing minor damage as soon as you spot it ensures your roof stays in good condition and helps you avoid expensive repairs down the road.
Hire Professionals for Repairs
When it comes to significant repairs or restoration work, it’s always best to rely on experienced roofing contractors. Professionals have the tools and expertise to fix problems safely and effectively. Attempting DIY repairs can lead to further damage or even injury, so save yourself the risk and trust the professionals for big jobs.
🏠 Built Up Roofs
At Kornerstone Roofing, we understand that a well-installed built up roof is key to protecting your property for decades to come. With our skilled professionals, commitment to quality craftsmanship, and use of premium materials, we ensure your roofing investment stands the test of time.
Whether you’re considering built up roof systems or exploring other roofing options, you can trust our experienced team to guide you every step of the way. Ready to get started? Contact us today for a consultation and let us provide the reliable roofing solution you deserve!
