Commercial roofing contractors play a critical role in shaping the durability, efficiency, and safety of modern buildings.
When businesses, warehouses, malls, and office complexes need reliable roofing systems, they turn to Commercial roofing contractors for expertise and long-term solutions.
Understanding what roofs Commercial roofing contractors use can help property owners make better decisions about installation, maintenance, and replacement.
This guide explores the most common roofing systems used by Commercial roofing contractors. It breaks down materials, benefits, drawbacks, and best-use scenarios in simple terms. Whether you own a commercial building or are just curious, this article will give you a clear and practical understanding of commercial roofing.
What Makes Commercial Roofing Different?
Commercial roofs are very different from residential roofs. While homes often use sloped roofs with shingles, commercial buildings usually have flat or low-slope roofs. This difference changes everything—from materials to installation methods.
Commercial roofing contractors choose materials based on:
- Building size
- Climate conditions
- Budget
- Energy efficiency goals
- Maintenance requirements
Because commercial roofs cover large areas, they must be durable, cost-effective, and easy to maintain.
Flat Roofing Systems
Flat roofing is the most common choice among Commercial roofing contractors. Despite the name, these roofs are not completely flat. They have a slight slope to allow water drainage.
Why Commercial Roofing Contractors Prefer Flat Roofs
Flat roofs are practical for large buildings. They are easier to install and maintain. They also allow space for HVAC systems and solar panels.
Built-Up Roofing (BUR)
Built-up roofing is one of the oldest systems still used by Commercial roofing contractors.
What is Built-Up Roofing?
BUR consists of multiple layers of bitumen (asphalt) and reinforcing fabrics. These layers create a thick, waterproof barrier.
Benefits
- Strong and durable
- Excellent waterproofing
- Long lifespan
Drawbacks
- Heavy weight
- Longer installation time
- Strong odor during installation
Commercial roofing contractors often recommend BUR for buildings that need maximum protection.
Modified Bitumen Roofing
Modified bitumen is an upgraded version of traditional asphalt roofing.
What Makes It Different?
It includes added polymers that improve flexibility and strength. Commercial roofing contractors often install it in layers using heat or adhesives.
Advantages
- Flexible in extreme temperatures
- Easy to repair
- Good resistance to wear
Disadvantages
- Requires professional installation
- May not be as long-lasting as newer materials
Commercial roofing contractors choose modified bitumen for buildings exposed to harsh weather.
Single-Ply Membrane Roofing
Single-ply membranes are among the most popular options used by Commercial roofing contractors today.
Types of Single-Ply Membranes
There are three main types:
- TPO (Thermoplastic Polyolefin)
- EPDM (Ethylene Propylene Diene Monomer)
- PVC (Polyvinyl Chloride)
TPO Roofing
TPO is widely used by Commercial roofing contractors due to its energy efficiency.
Benefits
- Reflects sunlight
- Reduces cooling costs
- Lightweight
Drawbacks
- Quality varies by manufacturer
- Requires skilled installation
Commercial roofing contractors often recommend TPO for energy-conscious businesses.
EPDM Roofing
EPDM is a rubber roofing system known for durability.
Benefits
- Long lifespan
- Resistant to UV rays
- Affordable
Drawbacks
- Black color absorbs heat
- Can be punctured easily
Commercial roofing contractors frequently use EPDM for large, low-slope roofs.
PVC Roofing
PVC roofing is known for strength and chemical resistance.
Benefits
- Fire-resistant
- Resistant to chemicals and grease
- Durable seams
Drawbacks
- Higher cost
- Requires expert installation
Commercial roofing contractors prefer PVC for restaurants and factories.
Metal Roofing Systems
Metal roofing is becoming increasingly popular among Commercial roofing contractors.
Types of Metal Roofs
- Standing seam metal roofs
- Corrugated metal panels
- Aluminum, steel, or copper systems
Benefits
- Extremely durable
- Long lifespan (40–70 years)
- Energy-efficient
Drawbacks
- Higher upfront cost
- Noise during rain
- Requires proper insulation
Commercial roofing contractors often suggest metal roofing for industrial buildings and warehouses.
Green Roofing Systems
Green roofs are eco-friendly systems used by forward-thinking Commercial roofing contractors.
What is a Green Roof?
It includes vegetation planted over a waterproof membrane.
Benefits
- Improves air quality
- Reduces heat
- Enhances building appearance
Drawbacks
- Expensive installation
- Requires maintenance
- Structural support needed
Commercial roofing contractors recommend green roofs for environmentally conscious projects.
Spray Foam Roofing (SPF)
Spray polyurethane foam is a modern solution used by Commercial roofing contractors.
How It Works
Liquid foam is sprayed onto the roof, where it expands and hardens into a solid layer.
Advantages
- Seamless and waterproof
- Energy-efficient
- Lightweight
Disadvantages
- Requires expert application
- Sensitive to weather during installation
Commercial roofing contractors often use SPF for roofs with complex shapes.
Asphalt Shingle Roofing (Limited Use)
Although mostly residential, some Commercial roofing contractors use asphalt shingles for small commercial buildings.
Benefits
- Affordable
- Easy to install
- Widely available
Drawbacks
- Shorter lifespan
- Less durable for large buildings
Commercial roofing contractors usually recommend shingles only for small offices or retail spaces.
Factors Commercial Roofing Contractors Consider
Choosing the right roof is not random. Commercial roofing contractors evaluate several factors before making recommendations.
Climate
Hot climates require reflective roofs. Cold climates need insulation and snow resistance.
Budget
Some roofing systems cost more upfront but save money over time.
Building Use
Restaurants, factories, and offices all have different needs.
Maintenance
Some systems require regular upkeep, while others are low maintenance.
Commercial roofing contractors balance all these factors to choose the best solution.
Installation Process
Commercial roofing contractors follow a structured process:
- Inspection of the building
- Removal of old roofing (if needed)
- Surface preparation
- Installation of insulation
- Application of roofing material
- Final inspection
Proper installation is key to long-term performance.
Maintenance and Repairs
Even the best roofs need maintenance. Commercial roofing contractors offer regular inspection services.
Common Maintenance Tasks
- Checking for leaks
- Cleaning drainage systems
- Repairing damaged areas
Regular maintenance extends the roof’s lifespan and prevents costly repairs.
Energy Efficiency and Sustainability
Modern Commercial roofing contractors focus on energy-efficient solutions.
Cool Roofing
Reflective materials reduce heat absorption.
Solar Integration
Roofs can support solar panels for energy generation.
Insulation
Proper insulation reduces energy costs.
Commercial roofing contractors help businesses lower their environmental impact.
Cost Considerations
Roofing costs vary widely depending on material and size.
General Cost Factors
- Material type
- Labor
- Roof size
- Complexity
Commercial roofing contractors provide estimates based on these factors.
How to Choose the Right Commercial Roofing Contractor
Not all contractors offer the same quality.
What to Look For
- Experience
- Certifications
- Warranty options
- Customer reviews
Reliable Commercial roofing contractors ensure proper installation and long-term performance.
Future Trends in Commercial Roofing
Commercial roofing contractors are adopting new technologies.
Innovations
- Smart roofing systems
- Advanced insulation materials
- Sustainable roofing solutions
These trends are shaping the future of commercial construction.
Conclusion
Commercial roofing contractors use a wide range of roofing systems to meet different building needs. From traditional built-up roofing to modern single-ply membranes and eco-friendly green roofs, each option has unique benefits.
The choice depends on factors like climate, budget, and building use. Flat roofing systems dominate the commercial sector, but metal and spray foam solutions are also gaining popularity. Commercial roofing contractors carefully evaluate each project to recommend the best material.
Understanding what roofs Commercial roofing contractors use helps property owners make informed decisions. It also highlights the importance of professional installation and maintenance. A well-chosen roof can last decades, protect valuable assets, and improve energy efficiency.
In the end, working with experienced Commercial roofing contractors ensures your investment is safe, durable, and built to last.