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When most people think about roofing, they often picture a house with asphalt shingles neatly lined up on top. However, the roofing industry is much broader than residential roofing. Commercial roofing is a specialized field that addresses the unique demands of businesses, warehouses, industrial facilities, schools, hospitals, and other large structures. Understanding what qualifies as commercial roofing—and how it differs from residential roofing—is essential for property owners, building managers, and even homeowners who may be considering the jump into commercial investments.
This blog will explore what is considered commercial roofing, the types of materials used, the differences between residential and commercial roofing, and why working with an experienced roofing company is so important for roof installation, roof repair, and roof replacement.
Defining Commercial Roofing
Commercial roofing refers to roofing systems designed for commercial buildings, meaning any structure that is not primarily used as a private residence. This includes offices, factories, shopping centers, apartment complexes, retail stores, warehouses, and schools. Unlike residential roofing, which focuses on protecting smaller structures like single-family homes, commercial roofing must cover larger areas and withstand greater wear and tear due to building size, occupancy, and design.
Because of these demands, commercial roofs are more complex and typically require different materials, installation techniques, and maintenance approaches than residential roofing. For example, while a home roof may last decades with asphalt shingles, a large warehouse might require a durable single-ply membrane system or built-up roofing to accommodate HVAC units, foot traffic, and drainage needs.
Key Characteristics of Commercial Roofing
Commercial roofing is defined not just by the size of the structure but also by its unique characteristics. Some of the most common features include:
Size and Scale – Commercial roofs are significantly larger than residential ones, often covering thousands of square feet. This means materials and installation must be highly efficient and durable.


Design and Shape – Many commercial buildings have flat or low-sloped roofs to accommodate equipment such as HVAC systems, solar panels, and ventilation units. By contrast, residential roofing typically features steep slopes to allow water runoff.


Material Choices – Commercial roofing relies on specialized materials such as single-ply membranes, metal roofing, concrete, and built-up roofing systems. Each material has advantages depending on the building’s function and environment.


Complex Installation – Roof installation on a commercial property involves more planning and coordination than residential roofing. Crews must work around business operations, safety requirements, and structural challenges.


Maintenance Needs – Because of their size and function, commercial roofs often require regular inspections, roof repairs, and preventative maintenance to extend their lifespan.
Common Commercial Roofing Materials
The choice of material is a defining factor in what makes a roof commercial. Below are the most common types of commercial roofing systems used today:
1. Single-Ply Membranes
Single-ply roofing membranes such as TPO (Thermoplastic Polyolefin), PVC (Polyvinyl Chloride), and EPDM (Ethylene Propylene Diene Monomer) are popular for flat and low-sloped commercial roofs. These materials are lightweight, durable, energy-efficient, and resistant to UV rays and weather damage.
2. Built-Up Roofing (BUR)
Often called "tar and gravel" roofs, BUR systems consist of multiple layers of bitumen and reinforcing fabrics. This makes them highly durable and resistant to heavy foot traffic. BUR has been a trusted commercial roofing solution for decades.
3. Modified Bitumen Roofing
A modern alternative to BUR, modified bitumen is designed for flat roofs and combines asphalt with polymerized rubber or plastic. It offers flexibility and resistance to extreme temperatures, making it an excellent choice for commercial properties in varying climates.
4. Metal Roofing
Metal is a long-lasting and low-maintenance roofing material suitable for many commercial structures. Its durability, energy efficiency, and recyclability make it a top choice for warehouses and large-scale facilities.
5. Concrete Roofing
Some commercial properties utilize reinforced concrete roofs, particularly in industrial applications. Concrete offers unmatched strength and durability, though it can be heavier and more expensive than other options.
Differences Between Residential and Commercial Roofing
Understanding the differences between residential roofing and commercial roofing is critical when hiring a roofing company. While both systems share the same ultimate goal—protecting a structure from the elements—their requirements differ significantly.
Roofing Materials – Residential roofs typically rely on asphalt shingles, wood shakes, or clay tiles. Commercial roofs, on the other hand, use membranes, metal panels, or concrete to handle larger areas and flat designs.
Roof Installation – Roof installation for residential homes usually takes a few days, depending on the size. Commercial roof installation can take weeks or even months, especially for large buildings requiring custom engineering.
Maintenance and Repairs – Roof repair on a residential home often involves replacing shingles or patching small leaks. In commercial roofing, repairs can involve fixing drainage systems, sealing membranes, or addressing HVAC-related issues.
Cost and Investment – Due to scale and complexity, commercial roofing typically costs more. However, the investment pays off in durability, energy efficiency, and extended lifespan.
Roof Replacement Timeline – A residential roof might need replacement every 20–30 years, depending on material. Commercial roof replacement timelines vary widely, with some systems lasting 15 years and others lasting over 40 with proper maintenance.
Why Proper Roof Installation Matters in Commercial Roofing
Commercial roof installation is not a one-size-fits-all project. A poorly installed roof can lead to leaks, structural damage, energy inefficiency, and costly downtime for businesses. An experienced roofing company will:
Evaluate the building’s design and usage before recommending materials.
Ensure proper insulation and ventilation for energy savings.
Implement drainage systems to prevent standing water on flat roofs.
Comply with building codes and safety regulations.
For property owners, choosing the right roofing company ensures peace of mind knowing their investment is protected for years to come.
The Role of Roof Repair and Maintenance in Commercial Roofing
Even the most durable commercial roofing system requires regular upkeep. Scheduled inspections and preventative maintenance are critical for extending the life of the roof and avoiding unexpected costs. Common roof repair and maintenance tasks include:
Fixing leaks and water damage.
Repairing membrane punctures or tears.
Replacing damaged flashing.
Cleaning gutters and drainage systems.
Addressing damage caused by foot traffic or equipment.
Timely roof repairs not only prevent minor issues from becoming major problems but also help businesses avoid disruptions caused by unexpected roofing failures.
When is Commercial Roof Replacement Necessary?
Commercial roof replacement is a significant investment, but sometimes it is the best option. Warning signs that indicate the need for a replacement include:
Extensive water damage or mold growth.
Roof membranes that are brittle, cracked, or peeling.
Increased energy bills due to poor insulation.
Structural sagging or significant wear.
Roof repairs that have become too frequent and costly.
When replacement is needed, partnering with an experienced roofing company ensures that the process is handled efficiently, minimizing business downtime and maximizing the building’s protection.
Choosing the Right Roofing Company for Commercial Roofing
Selecting the right roofing company is one of the most important decisions a property owner can make. Look for a roofing contractor with:
Proven experience in both residential roofing and commercial roofing.
Knowledge of multiple roof installation techniques.
A reputation for quality roof repair and roof replacement services.
Proper licensing, insurance, and safety training.
Strong customer testimonials and references.
A reliable roofing company doesn’t just install or repair roofs—they also act as partners in protecting the long-term value of your property.
Conclusion: Protect Your Investment with Ogden Roofers
Commercial roofing plays a vital role in the safety, energy efficiency, and long-term durability of any business property. From single-ply membranes and built-up roofing systems to metal and concrete solutions, commercial roofs are designed to handle challenges far beyond the needs of residential roofing. Proper roof installation, regular maintenance, and timely roof repair are crucial in extending the lifespan of these large, complex systems.
If your commercial building needs roof repair, roof replacement, or a new roof installation, working with a trusted roofing company is essential. Ogden Roofers has the expertise, experience, and commitment to deliver high-quality solutions tailored to your property’s unique needs. Whether it’s residential roofing or commercial roofing, our team ensures your investment is fully protected.
Call us today at +1 (801) 829-9651 to schedule a consultation and discover why businesses and homeowners across Utah trust Ogden Roofers for all their roofing needs.