The Different Types of Commercial Flat Roof Materials

Flat commercial roofs are built to handle tough conditions, especially in Northeastern Pennsylvania (NEPA), where weather can shift from heavy snow to summer heat. Choosing the right roofing material is essential for long-term performance, energy efficiency, and cost savings. In this guide, we’ll break down the most common flat commercial roofing materials and explain why EPDM rubber roofing is often the best choice for NEPA businesses.

EPDM Rubber Roofing (Highly Recommended)

EPDM (ethylene propylene diene monomer) is one of the most popular flat roofing materials in NEPA. It’s a durable synthetic rubber membrane designed to withstand extreme temperatures, UV exposure, and moisture.

One of the biggest advantages of EPDM is its flexibility. In NEPA winters, roofs expand and contract due to freezing and thawing. EPDM handles this movement better than many other materials, reducing the risk of cracks and leaks. It’s also cost-effective, easy to maintain, and can last 20–30 years with proper care.

For commercial property owners looking for a reliable, long-term solution, EPDM is often the top recommendation from The Flat Roof Guys.

TPO Roofing

TPO (thermoplastic polyolefin) is another common option for flat commercial roofs. It’s known for its white, reflective surface, which helps reduce cooling costs in the summer. TPO is heat-welded at the seams, creating a strong bond that resists leaks.

While TPO can be a good choice for energy efficiency, it may not be as proven long-term as EPDM in colder climates like NEPA. Some systems can become brittle over time if not installed properly.

PVC Roofing

PVC (polyvinyl chloride) roofing is similar to TPO but offers enhanced chemical resistance. This makes it a popular choice for restaurants or commercial buildings where grease or chemical exposure is a concern.

PVC roofs are durable and long-lasting, but they tend to be more expensive than EPDM. For many NEPA property owners, the added cost may not always be necessary unless specific conditions require it.

Modified Bitumen

Modified bitumen is an asphalt-based roofing system that has been used for decades. It is typically installed in layers, providing solid waterproofing protection.

This material performs well in many situations, but it can be more labor-intensive to install and maintain. Seams and flashing areas may require more frequent attention compared to single-ply systems like EPDM.

Built-Up Roofing (BUR)

Built-up roofing, often referred to as “tar and gravel,” is one of the oldest flat roofing systems. It consists of multiple layers of asphalt and reinforcing fabrics.

While BUR is durable, it is heavy and can be more difficult to repair. Modern alternatives like EPDM often provide similar or better performance with less weight and easier maintenance.

Choosing the Right Flat Roof in NEPA

When selecting a flat commercial roofing system in NEPA, it’s important to consider weather resistance, longevity, and cost. While each material has its place, EPDM rubber roofing stands out for its proven performance in the local climate.

At The Flat Roof Guys, we specialize in installing and repairing EPDM rubber roofs for commercial properties throughout NEPA. Our team helps you choose the best solution for your building and budget.