Your commercial roof protects everything inside your building. From inventory to equipment to employees, a good roof keeps your business safe from rain, snow, heat, and more.
Most commercial buildings need roofs that work well on flat or low-slope surfaces. Unlike homes with steep roofs, commercial buildings need special materials made for these flatter spaces.
Let’s look at the top five commercial roofing materials, their benefits, and how to pick the right one for your building.
Why Quality Commercial Roofing Matters
A strong commercial roof saves you money over time. Quality materials last longer—TPO roofs stay strong for 15-20 years, while metal roofs can protect your building for over 40 years.
Good roofing also cuts energy costs. Many commercial roofing options reflect sunlight and heat away from your building. This means your AC doesn’t work as hard in summer, cutting your power bills.
Fixing roof leaks costs much more than choosing the right roof first. Water damage can ruin inventory, damage walls, and cause mold. Quality commercial roofing prevents these problems before they start.
Overview
Five materials stand out for commercial roofing projects:
- TPO (Thermoplastic Polyolefin)
- EPDM (Ethylene Propylene Diene Monomer)
- PVC (Polyvinyl Chloride)
- Modified Bitumen
- Metal Roofing
Each material works best in certain situations. Your climate, budget, and building needs help decide which one makes the most sense for you.
Thermoplastic Polyolefin (TPO)
TPO roofing has become very popular for commercial buildings. This single-ply membrane comes in white, light gray, or tan sheets that get attached to your roof deck.
TPO reflects UV rays better than many other options. The white surface bounces sunlight away from your building, keeping it cooler in hot weather.
These roofs cost less than many alternatives. A TPO roof usually runs $3.50-$7.00 per square foot installed. That price includes both materials and labor.
TPO stands up well to oils, chemicals, and bacteria. It won’t crack or break down easily when exposed to these substances.
The sheets get heat-welded together during installation, creating strong seams that resist leaks. No glue means fewer weak spots where water might get in.
Ethylene Propylene Diene Monomer (EPDM)
EPDM roofing looks like a big rubber sheet. This durable membrane has protected flat roofs for over 50 years.
EPDM bends without breaking, even in cold weather. This flexibility helps it handle building movement and temperature changes without cracking.
These rubber roof membranes stand up to all kinds of weather. Rain, hail, snow, and UV rays don’t damage it easily. A good EPDM roof lasts 20-30 years.
The black color absorbs heat, which helps in cold climates. In hot areas, you can choose white EPDM for better sun reflection.
EPDM costs $3.00-$6.00 per square foot installed, making it one of the most affordable options. The simple installation process keeps labor costs down.
Polyvinyl Chloride (PVC)
PVC roofing resists chemicals better than any other commercial roofing material. This makes it perfect for restaurants, factories, and other buildings with grease or chemical exposure.
Like TPO, PVC roof membranes get heat-welded at the seams. These welded seams become stronger than the material itself, creating a waterproof barrier.
PVC roofs handle temperature changes well. They don’t get brittle in cold or soft in heat, maintaining their protective qualities year-round.
The white surface reflects sunlight, cutting cooling costs in hot weather. Many PVC roofs meet Energy Star standards for cool roofing.
This option costs more upfront—$4.00-$8.00 per square foot installed—but its 20-30 year lifespan and low maintenance needs make it worth considering.
Modified Bitumen
Modified bitumen roofs blend asphalt with chemical modifiers and reinforcement materials. This creates a stretchy, waterproof material perfect for commercial buildings.
These roofs use multiple layers for strength. The base, membrane, and cap sheet work together to keep water out and protect your building.
Roofers can torch-apply, hot-mop, or use cold adhesives to install modified bitumen. This flexibility helps when working around roof details like vents and edges.
The granular top surface stands up to foot traffic well. If your roof needs regular maintenance access, this durability matters.
Modified bitumen typically costs $3.00-$6.00 per square foot installed and lasts 15-20 years with proper care.
Metal Roofing
Metal roofs last longer than any other commercial roofing option. A well-installed metal roof protects your building for 40-70 years.
These roofs can include steel, aluminum, or copper. Each metal has its benefits. Steel costs less, aluminum resists rust, and copper develops a beautiful green patina over time.
Metal roofing can be recycled at the end of its life. This eco-friendly option keeps material out of landfills.
Fire resistance makes metal roofing safer. It won’t burn or help spread flames during a fire.
Metal costs more upfront—$5.00-$12.00 per square foot installed—but its long life makes it cost-effective over time.
How to Choose the Best Commercial Roofing Material
Start by checking your local climate. Hot, sunny areas benefit from white, reflective roofs like TPO or PVC. Cold regions might do better with EPDM or modified bitumen.
Think about your budget for both now and later. Some materials cost more upfront but need less maintenance and last longer.
Consider what happens on your roof. Do workers need access? Is there equipment up there? Metal and modified bitumen handle foot traffic better than membrane roofs.
Check warranty options. Most commercial roofing materials offer 15-30-year warranties, but coverage differs. Some cover just materials while others include labor for repairs.
Expert Commercial Roofing Insights
Professional roofers suggest getting your commercial roof inspected twice yearly. Spring and fall checks catch problems early before they cause damage.
Keep your roof clean for a longer life. Remove leaves, branches, and debris regularly. Standing water and trapped moisture lead to early roof failure.
Ask about cool roof tax credits and rebates. Many areas offer financial incentives for energy-efficient roofing choices.
Make sure your contractor has experience with your chosen material. Each roofing type needs specific installation knowledge for best results.
Get references from any roofing company you consider. Talk to other building owners about their experience with both the material and the installer.
A quality commercial roof protects your business for decades. Take time to research options, get multiple quotes, and choose a material that fits your building’s needs.
Want to learn more about how these materials might work for your specific building? Talk to a professional roofer who specializes in commercial projects.
