Flat Roof Repair with Karnak System – Dunmore PA | The Flat Roof Guys
How It All Started
We were recently contacted by a homeowner in Dunmore, PA who had growing concerns about water pooling near the edge of their flat roof, particularly above the gutters. With homes in the area aging and many still using older roofing systems, it’s not uncommon to see issues like this crop up. Water that can’t properly drain poses a major risk to the structure below and can quickly lead to leaks, wood rot, and damage to gutters and siding. At The Flat Roof Guys, we take pride in handling these types of jobs with care, especially in places like Dunmore, Forty Fort, and neighboring communities such as Throop, Moosic, and Olyphant. Our mission is to provide reliable, detail-focused roofing repair and replacement services to homeowners who need long-term peace of mind… not just a quick patch. That’s why people across the area trust us when it comes to preserving and protecting their homes, especially when dealing with flat roof drainage and flashing issues.

On-Site Assessment & Meeting the Homeowner
After coordinating a time that worked well for the homeowner, we made our way to their Dunmore property to assess the situation in person. One of the most important parts of our process is building trust and making sure the homeowner feels comfortable with the work ahead. We introduced ourselves, explained our process, and took some time to talk through what they had been experiencing with their roof. As we climbed up for a full inspection, it quickly became clear that water was pooling and backing up along the roof edge—especially where it transitioned into the gutter system. Not only did this increase the risk of overflow and damage to the fascia, but it also meant water could be slowly making its way into the home. We noticed evidence of stress on the seams and signs that previous repairs hadn’t addressed the core drainage problem. This wasn’t just about patching—it required a full flashing solution to stop the issue for good.
Planning the Repair: Choosing the Right System
After wrapping up our inspection, we sat down with the homeowner to go over what we found and lay out their options. We always aim to present solutions in a way that’s easy to understand, even for folks who don’t deal with roofing every day. In this case, we recommended a three-layer Karnak flashing system, which is a proven approach for flat roofs that experience water retention and poor drainage. We explained how the system would be installed along the edge of the roof, wrapping securely down into the gutter to prevent future backup. The Karnak would also be extended underneath the gutter and applied along the wall, plus 4 to 5 feet up the sides of the upper roof—creating a protective envelope that stops water from sneaking in at the seams. We answered their questions, showed them photos of similar jobs we’ve completed in places like Forty Fort, Taylor, and Scranton, and gave them the confidence they needed to move forward with the project knowing their home would be properly protected.

Getting to Work: The Repair Process
We scheduled the repair for the following week, making sure the weather would hold. On the day of the job, our crew arrived early, went over the project one more time with the homeowner, and got right to work.
We carefully cleaned the roof surface, removing debris, dirt, and any old material that could interfere with the new sealant. A smooth base is critical for long-term durability.
This base layer forms the foundation of the flashing system, starting the water-tight envelope that prevents leaks at the roof’s most vulnerable edge.
Each additional layer adds strength and protection, especially against heavy rains and freeze-thaw cycles that often impact flat roofs in Northeast PA.
This part of the installation is critical—water often sneaks in through wall and roof transitions. Our approach ensures even those tricky areas are completely sealed.
After applying all layers, we triple-checked our seams, paying close attention to corners and overlaps. No shortcuts—just real, lasting craftsmanship.

Residential Flat Roofing Services
At The Flat Roof Guys, we specialize in a wide range of residential flat roofing services designed to keep homes in Northeastern Pennsylvania dry, efficient, and protected year-round. From minor repairs to full flat roof replacements, we handle EPDM, TPO, modified bitumen, rolled roofing, and built-up systems with expert precision. Our services also include flashing repairs, seam sealing, drainage corrections, and roof coatings to extend the life of your existing flat roof. Whether you’re dealing with storm damage, standing water, age-related wear, or simply want to upgrade your roof’s performance, we tailor our solutions to fit your needs and budget. We’re proud to serve homeowners in Dunmore, Forty Fort, Moosic, and beyond—bringing reliable, long-term flat roofing support to the neighborhoods that need it most.

Final Cleanup & Finishing Touches
After the system was installed and inspected, we turned our full attention to the cleanup. We firmly believe that no roofing job is truly complete until the surrounding property looks as good—or better—than it did before we arrived. Our team carefully removed all leftover materials, bagged up trash, and ensured that every inch of the work area was spotless. We used magnets to collect stray nails, swept off debris from nearby sidewalks and walkways, and checked the gutters for any leftover roofing residue. For flat roofs especially, a clean site is crucial to spotting any remaining issues and giving the homeowner a clear view of the new work. We also did a final walkthrough of the property to make sure no tools or materials were left behind, and double-checked our vehicles to confirm nothing was accidentally left onsite. It’s these finishing touches that really set us apart. When we leave a home, we want the homeowner to see not just a fixed roof—but a team that truly cares about the outcome and their property as a whole. From edge to gutter, our commitment to detail shines through every step of the way.

Reconnecting with the Homeowner
Once the last bit of debris was cleaned up and the tools were packed away, we invited the homeowner to come outside and take a final walk with us. We pointed out the areas that were repaired and explained the full Karnak application, showing how the new system protects the roof edge, the wall seams, and the gutter interface. They were especially impressed with how seamlessly the new layers integrated with the rest of their roof—no sloppy edges, no gaps, just clean, watertight coverage. We answered a few follow-up questions and gave them a simple rundown of how to keep an eye on the area over time. Before leaving, we let them know we’d be checking in within a few weeks to make sure everything is holding up well, and to ensure they’re still satisfied. It’s not just about finishing the job—it’s about making sure our customers feel supported and confident in their investment. At The Flat Roof Guys, follow-through matters just as much as the repair itself. When we left that home in Dunmore, we didn’t just complete another project—we strengthened a relationship built on trust, transparency, and top-tier craftsmanship.

Ready to Get Started?
If you’re experiencing water damage, gutter issues, or roof leaks—especially with an older flat roof—don’t wait until the next storm causes bigger problems. At The Flat Roof Guys, we’re proud to serve Dunmore, Forty Fort, and all surrounding areas with friendly, honest service and high-quality repairs that last. Whether you need a simple fix or a full roof overhaul, we’re here to guide you every step of the way. Reach out today for a free estimate and let us help protect what matters most—your home.








