The roof is one of the most essential components of any commercial building. It doesn’t just protect your structure from the elements, it also affects your building’s energy efficiency, maintenance costs, and even property value.
If you’re a business owner or facility manager considering a roof replacement or new installation, understanding the different types of commercial roofing systems is crucial. In this blog, we’ll explore the most common commercial roofing types Flat, Metal, Single-Ply, and Built-Up and help you decide which is best for your business.
1. Flat Roofing Systems
Flat roofs are one of the most widely used systems in commercial buildings. Despite the name, they’re not perfectly flat, they have a slight slope (usually about ¼ inch per foot) to allow for water drainage.
Common Materials:
- Modified Bitumen
- EPDM (rubber membrane)
- TPO and PVC (single-ply membranes)
- Built-Up Roofing (BUR)
Pros:
- Cost-effective installation
- Easy access for maintenance or rooftop units (HVAC, solar panels)
- Efficient use of space
Cons:
- Poor drainage if improperly installed or maintained
- Susceptible to pooling water, especially in heavy rain areas
- Shorter lifespan if not well-maintained
Ideal For:
- Office buildings
- Warehouses
- Retail centers with large rooftop systems
Suitability for Arkansas:
Flat roofs are common in Arkansas, especially for commercial properties. However, they must be designed with proper drainage systems to handle frequent rainfalls and seasonal storms.
2. Metal Roofing Systems
Metal roofs have gained popularity in both commercial and industrial applications due to their durability, energy efficiency, and fire resistance. They are often seen in schools, shopping centers, and factories.
Common Types:
- Standing seam metal roofs
- Corrugated panels
- Aluminum, steel, or copper materials
Pros:
- Long lifespan (40–70 years)
- Reflects solar heat, lowering energy costs
- Minimal maintenance required
- Excellent performance in extreme weather
Cons:
- Higher upfront installation cost
- Noisier during rain and hail if not properly insulated
- May require thermal expansion joints
Ideal For:
- Industrial buildings
- Medical and educational facilities
- Structures seeking energy efficiency
Suitability for Arkansas:
Metal roofing is highly suitable for Arkansas’ hot summers and storm-prone seasons. It holds up well under high winds, heavy rain, and hail, and helps reduce cooling costs during the summer months.
According to the Metal Construction Association, metal roofs can reduce energy bills by up to 25% by reflecting solar radiation.
3. Single-Ply Membrane Roofing
Single-ply roofing systems consist of a single-layer membrane rolled out and adhered or mechanically fastened to the roof substrate. They are flexible, lightweight, and widely used in low-slope commercial roofs.
Types:
- TPO (Thermoplastic Polyolefin): Reflective and energy-efficient
- PVC (Polyvinyl Chloride): Chemical- and fire-resistant
- EPDM (Ethylene Propylene Diene Monomer): Rubber-based, UV-resistant
Pros:
- Lightweight and flexible
- Quick installation
- Resistant to UV rays, punctures, and chemicals (especially PVC)
- TPO and PVC are heat-weldable for strong seams
Cons:
- Membranes can puncture if exposed to sharp objects
- Seams can become weak over time if not properly installed
- Shorter lifespan (15–30 years) compared to metal or BUR
Ideal For:
- Low-slope or flat roofs
- Restaurants, retail stores, and office buildings
Suitability for Arkansas:
Single-ply membranes are effective in humid and stormy climates like Arkansas. TPO and PVC are excellent for reflecting solar heat, which helps lower cooling costs during long, hot summers. EPDM works best in colder regions and may not perform as efficiently in Arkansas’ high-heat environment.
4. Built-Up Roofing (BUR)
Built-Up Roofing, or BUR, is a traditional commercial roofing system that has been in use for over 100 years. It’s made by alternating layers of bitumen (asphalt or coal tar) and reinforcing fabric, then finishing with a top layer of gravel or coating.
Pros:
- Time-tested durability
- Provides excellent waterproofing
- Fire-resistant (especially with gravel topping)
- Effective for heavy foot traffic
Cons:
- Heavier than other systems; may require structural reinforcement
- Slower to install
- Can become brittle over time in extreme temperatures
Ideal For:
- Commercial buildings with frequent rooftop activity
- Institutions requiring long-term roofing performance
Suitability for Arkansas:
BUR roofs offer strong resistance against Arkansas’ heavy rains and hailstorms, but they can degrade under prolonged exposure to high UV radiation and heat. Regular maintenance and proper installation are key to longevity in this climate.
Comparing Commercial Roofing Systems
| Roofing Type | Lifespan | Energy Efficiency | Cost | Maintenance | Weather Resistance |
| Flat Roof | 10–25 yrs | Moderate | Low | Medium | Moderate |
| Metal Roof | 40–70 yrs | High | High | Low | High |
| Single-Ply | 15–30 yrs | High (TPO/PVC) | Mid | Low | High |
| BUR | 20–30 yrs | Moderate | Mid | Medium | High |
Which Commercial Roofing System Is Best for You?
The best roofing system depends on your budget, building type, climate, and long-term goals. Here are a few scenarios to guide your decision:
- Want long-term durability and energy savings? Choose metal roofing.
- Need fast installation and cost-efficiency? Consider TPO or EPDM single-ply systems.
- Looking for heavy-duty protection? Go with Built-Up Roofing.
- Have frequent rooftop equipment access? Opt for a reinforced flat roof system.
Arkansas Weather and Commercial Roofing
Arkansas’ commercial buildings are exposed to:
- Hot, humid summers (90°F+ temperatures)
- Severe thunderstorms and hail
- Heavy rainfalls
- Occasional snow and freezing temps in winter
Because of these conditions, roofing systems in Arkansas must provide:
- Strong waterproofing
- Impact resistance
- UV and thermal protection
- Proper drainage
According to the National Weather Service, Arkansas averages 55+ thunderstorm days per year and ranks among the states most prone to severe hail damage.
Final Thoughts
Your commercial roof is an investment in the long-term performance, safety, and energy efficiency of your property. Whether you’re managing an office park, retail center, warehouse, or industrial facility, choosing the right system ensures fewer repairs, lower utility costs, and peace of mind.
Understanding your options—Flat, Metal, Single-Ply, and Built-Up—is the first step to making a smart decision. The next step is partnering with a roofing contractor who understands Arkansas’ local weather patterns, building codes, and performance demands.
Need Help with Commercial Roofing in Arkansas?
Looking for expert guidance on the best commercial roofing system for your property? Contact Hostetler Roofing, a trusted local contractor who knows what works best in Arkansas’ unique climate.
Call (870)-557-4797 today to schedule a free commercial roof consultation in Arkansas and surrounding areas.
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