5 Types of Low Slope Roofing for Commercial Buildings

Low slope roofing is a popular choice for commercial buildings due to its practicality, cost-effectiveness, and durability. Whether you’re managing a retail center, an office building, or an industrial facility, selecting the right roofing materials for your low slope roof is crucial to ensuring the longevity of your property. But with numerous options available, it can be challenging to determine which system best suits your specific needs.

Here are the key advantages of low slope roofing systems:

• Cost Efficiency
• Ease of Maintenance
• Energy Efficiency

Below, we’ll break down the five most commonly used types of low slope roofing, covering their features, advantages, and ideal applications.

1. Built-Up Roofing (BUR)

What Is Built-Up Roofing?

Built-up roofing, often referred to as BUR, is one of the oldest and most trusted low slope roofing systems. It consists of multiple layers (or plies) of bitumen roofing and reinforcing fabrics, which are alternated to create a durable and seamless surface. The roofing is finished off with a layer of gravel or a reflective cap sheet.

Benefits of Built-Up Roofing

• 💪 Durability: The multiple layers provide exceptional protection against harsh weather and physical damage.
• 🌡️ Thermal Efficiency: With added layers of insulation, BUR systems help regulate internal building temperatures.
• 🛠️ Low Maintenance: Once installed, built-up roofs require minimal upkeep compared to other systems.

Is Built-Up Roofing Right for Your Project?

BUR is ideal for buildings exposed to heavy foot traffic, such as industrial facilities or storage units. If your business is located in an area with extreme weather conditions, this classic option is worth considering.

2. Modified Bitumen Roofing

What Is Modified Bitumen Roofing?

Modified bitumen (mod-bit) roofing builds on the concept of built-up roofing but with added flexibility and strength. This system typically uses reinforcing fabrics coated with polymer-modified bitumen, creating a roof that can expand and contract with changing temperatures without cracking.

Advantages of Modified Bitumen Roofing

• Flexibility: The materials are designed to withstand temperature fluctuations, making it suitable for various climates.
• Ease of Installation: Modified bitumen sheets can be installed through torch application, heat welding, or peel-and-stick methods.
• High Resistance: It’s resistant to punctures and able to handle moderate foot traffic.

Ideal Applications

For buildings requiring a strong, cost-effective roofing system with added flexibility, modified bitumen roofing offers an excellent balance of performance and affordability.

3. Single-Ply Membrane Roofing

Single-ply membrane roofing is widely used due to its lightweight construction, flexibility, and excellent water resistance. There are two main types of single-ply membranes often chosen for commercial roofing projects.

TPO (Thermoplastic Polyolefin)

TPO roofing is a reflective single-ply membrane that offers numerous benefits to commercial buildings.

• Energy Efficiency: Its reflective surface reduces cooling costs by deflecting the sun’s rays.
• Seam Strength: Heat-welded seams create an airtight and waterproof seal.
• Environmental Benefits: Made without chlorine, TPO is an eco-friendly roofing option for organizations focused on sustainability.

EPDM (Ethylene Propylene Diene Monomer)

EPDM, commonly known as rubber roofing, is another popular option for low slope roofing applications.

• Exceptional Durability: Resistant to UV rays and extreme weather conditions.
• Cost-Effective: With its relatively simple installation process, EPDM is an affordable alternative.
• Versatility: Available in both black and white, it accommodates different climate needs.

When to Choose Single-Ply Roofing

Single-ply membranes are suitable for commercial buildings needing a high-performance, cost-effective roof. TPO is often preferred in warmer climates for its energy efficiency, while EPDM is favored for its durability in various environments.

4. Spray Polyurethane Foam (SPF) Roofing

What Is SPF Roofing?

SPF roofing is a unique system that begins as a liquid and expands into a foam, creating a seamless and solid surface. Once cured, this system is coated with a protective layer to shield it from UV rays and weather.

Benefits of SPF Roofing

• 💡 Energy Efficiency: Its insulating properties can significantly lower heating and cooling costs.
• 🛠️ Seamless Installation: SPF eliminates seams, reducing the potential for leaks.
• 🪶 Lightweight: Despite its durability, SPF adds minimal weight to the roof structure.

Applications of SPF Roofing

SPF is an excellent choice for buildings requiring insulation, especially in climates where energy efficiency is a priority. Its seamless nature also makes it suitable for irregularly shaped roof decks.

5. Metal Roofing

Overview of Metal Roofing Systems

While typically associated with steep-slope roofing, metal roofing systems are increasingly common in low slope applications. These systems often feature standing seams to facilitate drainage and prevent water pooling.

Key Advantages

• ⏰ Longevity: Metal roofing can last up to 50 years or more with proper maintenance.
• ⛈️ Weather Resistance: Highly resistant to wind, hail, and other severe weather conditions.
• ♻️ Sustainability: Many metal roofs are made from recycled materials and can be recycled at the end of their lifespan.

When Is Metal Roofing the Right Choice?

Metal roofing is ideal for commercial buildings seeking a long-lasting, eco-friendly solution. However, it typically involves a higher initial investment compared to other options.

How to Choose the Right Low Slope Roofing System

Selecting the ideal roofing system depends on several factors, including your building’s location, usage needs, and long-term goals. Here’s how to decide:

1. Assess Your Building’s Requirements

• Climate considerations (e.g., temperature extremes, UV exposure)
• Budget constraints
• Foot traffic levels (e.g., HVAC maintenance, tenant usage)

2. Evaluate Material Durability

• Built-up and modified bitumen roofing prioritize robustness.
• Single-ply membranes like TPO emphasize energy efficiency.
• Metal roofing offers unmatched longevity.

3. Prioritize Cost vs. Performance

• While some systems involve a higher upfront price, their long-term savings may justify the investment.

For more tailored advice, contact experts like Embry’s Roofing to analyze your building and recommend the most appropriate solution.

Why Embry’s Roofing?

Choosing the right roofing contractor is just as important as selecting the right roofing materials. At Embry’s Roofing, our team of experienced professionals specializes in low slope roofing projects for commercial buildings. We pride ourselves on delivering quality craftsmanship, exceptional service, and reliable solutions tailored to your property’s specific needs.

With years of experience, we’ve built a reputation for providing businesses with roofs they can depend on. Whether you’re planning a new installation or need repairs on an existing roof, we’re here to guide you every step of the way.

Contact Embry’s Roofing today to schedule your commercial roofing project. Together, we’ll design a system that’s built to last.