How to Install a Rubber Roof When There Is Terracotta Around the Edge (NEPA Guide)

Installing a rubber roof in NEPA homes can be straightforward—until you’re dealing with terracotta tile around the roof edge. Many older homes and buildings in Northeastern Pennsylvania feature decorative terracotta coping or trim along parapet walls. If not handled properly, this detail can lead to leaks, cracking, and long-term water damage.

At The Flat Roof Guys, we specialize in rubber roofing systems throughout Wilkes-Barre, Scranton, Hazleton, and surrounding NEPA communities. Here’s how a professional EPDM rubber roof installation should be done when terracotta is present around the edge.

Step 1: Inspect the Terracotta Edge

Before installing a rubber roof, a thorough inspection is critical. Terracotta can crack over time due to freeze-thaw cycles in NEPA’s harsh winters. Loose tiles, crumbling mortar joints, or shifting coping must be repaired or stabilized first.

If the terracotta is unstable, installing rubber roofing directly against it will almost always lead to premature failure.

Step 2: Prepare the Surface Properly

Surface preparation is one of the most important steps in rubber roof installation.

Remove old roofing material
Clean debris and dust from the terracotta
Repair damaged mortar joints
Ensure edges are smooth and secure

In some cases, we recommend installing a wood nailer or termination bar beneath the terracotta edge to create a secure anchor point for the EPDM membrane.

Proper prep ensures the rubber membrane will adhere correctly and prevent water intrusion.

Step 3: Install the EPDM Rubber Membrane

Once the surface is ready, the EPDM membrane is rolled out and positioned. Adhesive is applied to both the substrate and the membrane (depending on the system design), and the rubber roofing is carefully laid into place.

When terracotta coping is present, the membrane must extend up the vertical wall and underneath the coping whenever possible. This creates a watertight seal and protects against wind-driven rain—something common in NEPA storms.

Step 4: Secure the Edge with Termination and Flashing

This is where experience matters most.

The membrane is secured using:

Termination bars
Appropriate fasteners
High-quality sealant
Custom metal counter flashing (if needed)

If the terracotta coping cannot be removed, the membrane is sealed tightly against it using a termination bar and commercial-grade sealant designed for masonry applications.

Proper edge detailing prevents leaks, which are the most common failure point on flat roofs in Northeastern Pennsylvania.

Step 5: Final Sealing and Water Test

After installation, all seams and penetrations are checked. A professional contractor may perform a controlled water test to ensure the edge detail is completely watertight.

In NEPA’s climate, a properly installed rubber roof should last 20–30 years with routine maintenance.

Why Hire a NEPA Rubber Roofing Expert?

Working around terracotta coping requires precision and local experience. Freeze-thaw cycles, snow loads, and heavy rain make proper flashing and sealing essential.

At The Flat Roof Guys, we install and repair EPDM rubber roofs across Wilkes-Barre, Scranton, Pittston, Kingston, Hazleton, and surrounding NEPA areas. We understand how local weather affects flat roofing systems and how to protect your property long term.

If your rubber roof meets terracotta edges, don’t trust just anyone. Trust local specialists who know flat roofing in NEPA.