Built-up Roofing

Taken from https://www.ctroofcrafters.com/single-ply-shingles/

When it comes to protecting your home from the elements, choosing the right roofing system is one of the most important decisions you'll make. In Aurora, Illinois — where winters can be snowy and summers warm and humid — your roof needs to do more than just look good. It has to perform year-round.

One durable, time-tested option that homeowners might consider is built-up roofing, commonly referred to as BUR. While it’s often used in commercial applications, BUR is a solid choice for residential properties with low-slope or flat roofs. But what exactly is built-up roofing, and is it the right fit for your home?

In this article, we’ll break down the components of BUR systems, their pros and cons, and how they perform in the Aurora climate — helping you make an informed decision for your home.

What Is Built-Up Roofing (BUR)?

Built-up roofing is one of the oldest and most proven roofing methods still in use today. It’s composed of alternating layers of bitumen (a tar-like substance) and reinforcing fabric, finished with a top layer of aggregate (such as gravel) or a reflective coating.

Here’s a quick look at the typical layers in a BUR system:

1. Roof deck
2. Vapor barrier (optional)
3. Insulation
4. Bitumen (asphalt or coal tar)
5. Reinforcing fabric (often fiberglass or organic felt)
6. More layers of bitumen and felt (typically 3 to 5 total layers)
7. Surfacing layer (gravel, mineral cap sheet, or reflective coating)

The result is a tough, layered roofing membrane that provides excellent waterproofing and weather resistance.

Why Choose Built-Up Roofing?

BUR systems have been used for well over 100 years — and for good reason. Their durability and weather resistance make them a strong contender for flat and low-slope roofs.

Let’s take a deeper look at the advantages of BUR, especially for homes in Aurora, IL.

Benefits of Built-Up Roofing for Aurora, IL Homes

1. Exceptional Waterproofing

The multiple layers of bitumen and felt create a tight seal against water intrusion. For homeowners in Aurora, where spring rains and snowmelt can cause roof stress, this is a major benefit.

2. Proven Durability

A properly installed BUR roof can last 20 to 30 years or more, depending on materials used and maintenance. This makes it one of the most long-lasting flat roofing options available today.

3. Excellent UV and Heat Resistance

BUR systems often use a reflective top coating or light-colored gravel to help reflect sunlight, which helps regulate indoor temperatures and reduces heat absorption — perfect for Aurora’s hot summer months.

4. Fire Resistance

Built-up roofing systems are naturally fire-resistant, especially when surfaced with gravel. This adds an important layer of safety for residential buildings.

5. Low Maintenance

BUR roofs require relatively little upkeep compared to some other flat roofing systems. With proper installation and occasional inspections, homeowners can expect long-lasting performance.

Potential Drawbacks of Built-Up Roofing

While BUR systems have plenty of advantages, they’re not for every homeowner or every situation. Here are some factors to weigh:

1. Heavier Weight

BUR roofs are significantly heavier than other flat roofing systems. Your home’s structure must be able to support the added weight of multiple plies and gravel.

Tip: A professional roofer in Aurora should evaluate your home’s structure before installation.

2. Longer Installation Time

Because BUR involves multiple layers, the installation process can take longer than single-ply systems like TPO or EPDM. However, the result is a much thicker, more protective roof.

3. Installation Complexity

Installation should always be performed by experienced roofing professionals. Improper layering or heating of the bitumen can lead to leaks or system failure.

4. Odor and Fumes

Hot-applied BUR systems use heated asphalt, which can produce strong odors during installation. This can be unpleasant but is typically short-lived.

5. Cracking in Cold Weather

Though built-up roofing handles snow and rain well, extreme cold — which Aurora experiences in winter — can cause the bitumen to become brittle and potentially crack over time without proper maintenance or surfacing.

Built-Up Roofing in Aurora’s Climate

Living in Aurora means facing the full range of Midwestern weather — from snowstorms and icy wind chills in winter to thunderstorms and hot, humid days in summer.

Here’s how BUR stacks up under local weather conditions:

• Snow & Ice: The multiple layers of waterproofing make BUR ideal for resisting snowmelt. However, homeowners should clear heavy snow periodically to avoid excessive weight on the roof.
• Rain & Moisture: BUR is virtually impermeable to rainwater when installed correctly, offering top-tier leak protection.
• UV Exposure: BUR roofs with reflective coatings or gravel surfacing perform well under direct sun, helping reduce indoor cooling costs in summer.
• Temperature Swings: BUR’s layered structure can absorb and distribute temperature changes, though the bitumen may expand and contract over time. Regular inspections help catch minor issues early.

Maintenance Tips for Built-Up Roofs

To keep your built-up roof performing at its best, regular maintenance is key. Here are some simple but effective tips:

• Annual Inspections: Schedule a professional inspection at least once a year and after major weather events.
• Debris Removal: Keep leaves, branches, and other debris off your roof to prevent drainage issues.
• Check for Ponding Water: Look for standing water 24–48 hours after rainfall — a sign of poor drainage.
• Gravel Redistribution: If you have a gravel-surfaced BUR, make sure the gravel is evenly distributed to protect the layers underneath.
• Seal Any Cracks: Small cracks in the top layer can usually be sealed quickly before they become leaks.

When to Consider Replacing a Built-Up Roof

Even a well-installed BUR system won’t last forever. You should consider replacement if:

• You notice persistent leaks or water stains on your ceilings
• The roof feels spongy or soft underfoot
• Multiple repairs have failed to stop water intrusion
• The roof is 20+ years old and showing signs of wear

If you're unsure about your roof’s condition, a free inspection from a local roofing company can help determine your best next steps.

Built-Up Roofing vs. Other Flat Roofing Systems

Although we’ve removed the side-by-side chart as requested, it’s helpful to briefly compare BUR to the more modern flat roof systems like EPDM, TPO, and PVC.

• EPDM (rubber roofing) is lighter and faster to install but may not last as long as BUR.
• TPO and PVC offer better energy efficiency but typically have higher upfront costs and may not have the same track record of durability.
• BUR is time-tested, durable, and very resistant to the kind of water intrusion and snow loads common in Aurora.

Is Built-Up Roofing Right for Your Aurora, IL Home?

Here are some quick questions to help you decide:

• Does your home have a flat or low-slope roof?
• Are you looking for long-term performance with minimal maintenance?
• Is your home’s structure capable of supporting a heavier roofing system?
• Are you okay with a longer installation period for a more durable roof?
• Do you prefer a roof with a proven record in harsh climates?

If you answered "yes" to most of these, BUR might be the ideal roofing choice for your home in Aurora.

Trust Local Experience for Built-Up Roofing Installation

Installing a built-up roof requires skill, precision, and knowledge of local conditions. At [Your Company Name], we specialize in residential flat and low-slope roofing systems throughout Aurora and surrounding areas. Our team is fully licensed, insured, and trained in BUR installation and maintenance.



Whether you're building a new home, replacing an aging roof, or exploring options for improved energy efficiency, we’re here to help.

Get a Free BUR Roof Estimate Today!
Ready to explore the benefits of built-up roofing for your Aurora home? Contact us today for a free consultation and no-obligation quote. Let our local expertise protect your home with a roofing system that’s built to last.