Commercial roofing is one of the most important aspects of a building’s exterior. It protects the inside from moisture and external hazards, enhances the structure’s aesthetics, and creates a more welcoming environment for passersby. 

At first glance, commercial roofing might not seem as complex as residential roofing. Regardless, you must consider several significant differences before choosing which type of roofing system is right for your project. 

To help you get started, we’ve put together this complete guide. From the different types available to the various uses commercial roofing contractors can add to them, you will learn everything you need about a commercial roof replacement.

Commercial roofing

What Is Commercial Roofing?

The primary role of residential roofs and commercial roofing systems is to protect your property. However, they differ significantly in the construction and installation materials employed. 

Commercial roofing contractors commonly use single-ply (PVC, TPO, EPDM), built-up roofing systems, modified bitumen, concrete, tar and gravel, and other materials in commercial roof replacement systems. Depending on the climate, residential buildings may have concrete tiles or asphalt shingles installed on their roofs.

Because commercial roof repair systems have more alternatives than residential roofs, you must conduct thorough research and select a reputable commercial roofing company that provides comprehensive services to ensure satisfactory outcomes.

Does Your Commercial Roof Need to Be Replaced?

What signs of roof damage can indicate the need for a replacement?

  • Puddles of water – Water puddles on your roof indicate that the drainage system has failed.
  • Damaged flashing – Flashing’s function is to conceal roof seams. Therefore, if it’s weak and you don’t notice it earlier, water can seep through the seams, requiring a repair.
  • Cracks and tears – These usually happen after almost 15 years of its use.
  • Roof leaks – If you don’t fix leaks right away, they can lead to big problems such as mildew or mold.
  • Water spots – Water stains on the ceiling can signal roof leaks.
  • Rips in your roof membrane – The most prevalent type of commercial roofs, PDM rubber roofs, contain protective rubber membranes. When the watertight barrier gets destroyed, it will allow moisture to enter the structure.
  • Loose or unattached EPDM membrane – If your roof’s membrane flaps in the wind, it is not safeguarding your building.
  • Loose fasteners – Roof membrane bumps typically indicate loose fasteners.
  • Mold – If you notice or smell mold within your building, water may leak through the roof, creating a serious health risk to the occupants. 

Contact Us Today

Have skilled roofers at Liberty Roofworks provide you with roofing services in Columbia, SC. We provide a free roof inspection and estimate for your convenience.

Speak with our experts at any time regarding your property goals or concerns. We’re here to confer with you about your property to ensure great results.

Liberty Roofworks

1397 Cilantro Ct.,
Tega Cay SC 29708
Monday-Friday | 8am-5pm
(704) 463-8177

    Commercial Roofing Systems Types

    There are several types of roof systems, and we’ve listed them here for you. Let’s review the following types:

    BUR Membrane or Built-up Roofing

    Built-up, or BUR roofing, is the most common gravel and tar roof method. It comprises numerous piles or layers, which increase the system’s resilience. BUR is a good roofing solution that is an excellent alternative if you require a durable, low-cost option.

    Metal Roofing

    Metal tops are indeed a widespread type of commercial roof. Metal tile sheets, stainless steel, corrugated galvanized steel, silicon-coated steel, stone-coated steel, aluminum, copper, tin aggregates, zinc, and other materials are available.

    Additionally, commercial metal roofs are long-lasting and have sound fire resistance effects. They frequently contain protective coatings to avoid corrosion and damage from sunlight or other environmental causes. Moreover, they are also an appealing option that contributes to more sustainable construction for your building.

    Modified Bitumen Roofing

    Bitumen and layers of reinforced roof textiles form the roof’s structure. A commercial roofing repair system made of modified bitumen is called “mod-bit roofing.” It is attached to tops as a two-ply system to offer maximum stability and protection.

    Modified bitumen roofs are less expensive to maintain and have higher tensile strength than commercial flat roofs. Furthermore, it is ideal for commercial roof repair if you expect a lot of activity.

    EPDM Roof Membrane or Thermoset

    Compared to other thermoset roofing, commercial roofs, commonly called EPDM roofing, is adaptable, long-lasting, and straightforward to maintain. It is made of single-ply rubber materials, has an easy installation technique, and is resistant to ozone and UV light. 

    Other benefits of EPDM roofing include resistance to acids, alcohol, and solvents, flexibility at cooler temperatures, and reflective characteristics that can assist reduce cooling costs.

    Thermoplastic or TPO & PVC Roof Membrane

    Roofs made of TPO (thermoplastic polyolefin) and PVC (polyvinyl chloride) are ideal for second-generation installations. They are light, highly reflective, and resistant to chemicals, UV radiation, punctures, and bacterial development. TPO and PVC commercial roofs are appropriate for restaurants, hotels, and other facilities that use ventilation systems that release oils.

    Green Roofing System

    Green tops have become a sustainable property choice in recent years. They can increase efficiency while also solving water and drainage issues. Additionally, they are also eco-friendly and aesthetically appealing commercial roofing materials.

    Three Essential Elements of Commercial Roofing

    Here are the three vital aspects of commercial roofing:

    Installation of Commercial Roofs

    The process for setting up a commercial roofing plan can vary enormously depending on the type of cost, material, work hours, and difficulty level. It’s essential and beneficial to employ a dependable commercial roofing contractor to complete the work within your budget and schedule.

    Roof Inspection

    Roof membranes, vents, decking, gutters, flashing, drainage pipes, and downspouts are all examined throughout a commercial roofing contractor inspection. This inspection can help avoid potential roof damage, identify problems early, and save money for future repairs.

    Upkeep of Commercial Roofs

    Proper maintenance is vital to prolonging the durability of a commercial roof. Here are all parts of the service:

    • Cleaning debris,
    • Treating tears, 
    • Water damage or leaks, 
    • Fixing flashing and HVAC installations on the rooftop, 
    • Preparing your roof seasonably, and
    • Guaranteeing the roof material is in perfect shape.
    Commercial Building
    roof maintenance

    How to Maintain Your New Roof Properly

    When it comes to commercial roofing, you want a contractor that can provide high-quality work at a reasonable price. You will maintain your new roof by:

    • Inspecting your commercial roof with the help of experienced roofing contractors.
    • Trimming risky trees over the top might help save money on future pricey repairs.
    • Investing in a roof care plan is the most effective approach to maintaining your commercial building safe.

    Common Commercial Roofing Materials

    Choosing the appropriate roofing material is crucial and ultimately depends on your structure’s function, preference, and budget. Each material has advantages and disadvantages. 

    You can get advice from an experienced commercial roofing contractor, but eventually, it’s up to you! Here’s what you should know about the various commercial roofing systems:

    Factory-certified TPO (Thermoplastic Polyolefin)

    TPO, often known as “cool roofing,” is a single-ply membrane that includes strengthened cover plates with welded seams and most people use it for flat roofing. TPO roofing has several advantages, including:

    • Last between 20 and 25 years
    • Energy-efficient
    • Straightforward installation
    • Various color options
    • Resistant to dirt, mildew, mold, and moisture
    • Long-lasting and cost-effective
    • More resistant
    • Reflects sunlight 
    • reduces the strain

    EPDM (Ethylene Propylene Diene Monomer)

    EPDM is a single-ply rubberized membrane of oil and natural gas widely used in flat roofing systems. Moreover, the advantages of an EPDM roof installation are:

    • Relatively inexpensive
    • Resistant to UV damage
    • 100% recyclable
    • Highly resilient
    • 20 years durability
    • Fire resistant
    • Rain, wind, and hail resistant
    • Available in white or black

    Modified Bitumen Roofing Systems

    A modified bitumen roofing system includes asphalt with a chemical polymer, and contractors can install it using hot-mopped asphalt, self-adhesive sheets, cold-applied adhesives, or torch-applied. The pros of a modified bitumen roof include the following:

    • Resistant to heat, cold, and storms
    • Flexible
    • Low maintenance
    • Energy-efficient
    • Attractive


    Asphalt consists of a base mat, a layer of waterproof asphalt, and a coating of ceramic granules. Additionally, commercial asphalt roof advantages are: 

    • Attractive
    • Cost-effective
    • Durable for 15 to 30 years
    • Climate resistant
    • Multiple colors and styles
    • Low maintenance


    Metal roofing materials include copper, aluminum, zinc, tin, and steel, with steel being the most common and cost-effective. Besides that, commercial metal roof systems have the following benefits:

    • Quick installation 
    • Environmentally friendly
    • High return on investment 
    • Noncombustible
    • Durable for 40 years
    • Low maintenance

    Standing Seam Metal Roofing

    Standing seam metal roofing systems have concealed fasteners and trapezoidal or vertical legs with flat spaces between them.

    Commercial properties can benefit from standing seam metal roofs in the following ways:

    • Suitable for complicated, multi-level roofs
    • Ideal for steep or low-sloped roofs 
    • Versatile
    • Durable

    Stone-coated Steel

    Stone-coated steel roofing includes several layers, such as galvanized steel sheets covered with a primer, stone grains for gloss and added protection, and an acrylic glaze. The benefits of commercial roofs with stone-coated steel are:

    • Remarkably tough
    • Long-lasting
    • Gorgeous aesthetics
    • Lightweight and sound absorbent
    • Strong guarantee
    • High return on investment

    About Columbia, SC

    South Carolina’s state capital is Columbia. It is the location of the South Carolina State House, a Greek Revival structure located in grounds with numerous memorials. A sizable park with animal enclosures and botanical gardens is called Riverbanks Zoo & Garden. The Columbia Museum of Art is home to a broad collection that spans generations. The Robert Mills House, a museum and palace built in 1823, is encircled by elaborate gardens.

    The purpose of commercial roofs is to protect your company from the weather. Commercial roof structures can protect against rain, snow, wind, and other weather-related risks with suitable materials and installation. Choosing the proper roofing system can assist preserve your home or company while improving its appearance.

    Furthermore, commercial roof construction is a demanding job requiring skill in several professions. When dealing with a wide area of construction materials, you must select a solution that can handle the job’s demands. Make sure the commercial roofing contractors you choose are skilled and able to install the roof to your standards. 

    Call us now if you have any general questions about commercial roof systems or roofing installation in Columbia, SC.

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