Built-Up Roofing (BUR) Systems
A Layered System That’s Been Around for a Long Time
Built-up roofing, often called BUR, is one of the more traditional systems used on flat commercial roofs.
It’s made up of multiple layers of asphalt and reinforcing materials, built up over time to create a durable, water-resistant surface. You’ll still find it on a lot of existing buildings, especially older commercial and industrial properties.
We’ve worked on BUR systems in all stages—repairs, restoration, and full replacements—so most of what we do comes down to understanding how the system has aged and what it needs next.
How BUR Systems Work
BUR is built in layers.
Those layers are designed to:
- Provide multiple levels of waterproofing
- Add durability across the roof surface
- Create redundancy if one layer begins to wear
The top layer is often finished with gravel or a coating to help protect the system from weather and UV exposure.
When everything is holding together the way it should, BUR can be a dependable system.
What We See Over Time
Because BUR is layered, the way it ages is a little different than single-ply systems.
Over time, we typically see:
- Blistering or bubbling in the layers
- Cracking from temperature changes
- Areas where water is sitting longer than it should
- Sections where the surface has worn down
Some of these issues are surface-level. Others can point to moisture within the system, which takes a closer look.
Repair, Restore, or Replace
BUR systems can often be repaired, depending on their condition.
If the issues are isolated, we can usually:
- Address damaged sections
- Seal problem areas
- Reinforce areas that are starting to wear
In some cases, a coating system can be used to help extend the life of the roof.
If the system is holding moisture, breaking down across multiple layers, or reaching the end of its lifespan, replacement may be the better long-term option.
We’ll walk through what we’re seeing and help you decide what makes sense based on the condition of the roof.
New Installation & Replacement
While BUR is less common in new construction than some newer systems, it’s still used in certain applications.
When we install or replace a BUR system, the focus is on:
- Proper layering and adhesion
- Drainage across the roof
- Protecting the surface from long-term wear
Like most systems, how it’s installed plays a big role in how it performs over time.
Where BUR Systems Are Common
You’ll often see BUR on:
- Older commercial buildings
- Industrial properties
- Large flat-roof structures
It’s a system that’s been used for a long time, and in the right situations, it still has its place.
Why Choose Us?
Our unparalleled expertise and commitment to quality ensure your building is protected with the best roofing solutions available.
Reputation & Experience
With more than half a century of experience in the commercial roofing industry, Delta Roofing has built a solid reputation for excellence and reliability.
High-Quality Materials & Workmanship
Our dedicated team uses top-tier materials and advanced techniques to deliver reliable, long-lasting results tailored to your specific needs.
Excellent Customer Service
We prioritize exceptional customer service, ensuring clear communication and a seamless experience from start to finish.
→If you have a built-up roof and aren’t sure what condition it’s in, we can take a look and give you a straightforward assessment. We’ll help you understand what’s going on and what your options are moving forward.