If you own a home or building with a flat roof, you already know it comes with its own set of challenges. Flat roofs are practical, cost-effective, and look great—but when they start leaking or showing signs of wear, the big question comes up fast:

Do you repair it, or is it time to replace the whole thing?

At Westbank Roofing, we get this question from homeowners across Westbank, Gretna, Harvey, Marrero, and surrounding areas all the time. And the truth is—there’s no one-size-fits-all answer. But there are clear signs and factors that can help you decide which option makes the most sense.

Let’s break it down.

How to Know If You Need Flat Roof Repair

Flat roofs are known for their durability, but no roof lasts forever. If the issue is small and isolated, roof repair may be all you need.

Here’s when flat roof repair is usually the right call:

  1. You’re seeing small leaks in a limited area

  2. The damage is confined to one spot (like a puncture or tear)

  3. Flashing around vents or edges is coming loose

  4. There’s minor ponding water but no widespread damage

  5. The roof membrane is still in generally good condition

Quick tip:
If your flat roof is less than 10–15 years old and hasn’t had frequent problems, repair is often the smartest choice.

When It’s Time to Consider Flat Roof Replacement

Sometimes patching things up won’t cut it—and doing constant repairs can cost more in the long run. Here’s when a full roof replacement is usually the better option:

  1. Your roof is 15 to 25+ years old

  2. You’re dealing with multiple or recurring leaks

  3. The roof membrane is cracked, brittle, or blistering across large areas

  4. There’s water damage underneath the roof deck

  5. Previous repairs haven’t solved the problem for good

  6. You’re spending more on fixes than what replacement would cost

If your roof has significant wear or structural issues, repairing one section won’t address the bigger problem. A full replacement gives you a clean slate—and peace of mind.

Repair vs. Replacement: What’s the Cost Difference?

We get it—cost matters. Here’s a quick comparison of what you can expect:

Flat Roof Repair

  1. Typically costs $300 to $1,500, depending on the scope of the repair

  2. Best for small issues like punctures, seam splits, or flashing repairs

  3. Quick turnaround, often finished in a day or two

Flat Roof Replacement

  1. Usually costs $5,000 to $20,000+, depending on roof size, material choice, and complexity

  2. Longer lifespan (often 15–25 years or more) with proper installation

  3. Better energy efficiency and fewer worries about future leaks

Still unsure which option makes sense for your budget? We’re happy to provide a clear, honest estimate so you know where you stand. Visit our roof replacement page for more details on the process.

Common Flat Roofing Materials We Work With

Different materials may affect whether repair or replacement makes the most sense. Here are some of the systems we see most often:

  • Modified Bitumen Roofing: Tough and repairable, especially if damage is limited. Learn more about modified bitumen roofing here.

  • EPDM Rubber Roofing: Repairs well, but older systems may develop widespread issues over time.

  • TPO Roofing: Great energy efficiency, but patching may not be enough if seams are failing across the surface.

  • Built-Up Roofing (BUR): Repairs are possible, but aging BUR systems with leaks often need full replacement.

How to Make the Right Choice for Your Flat Roof

When deciding between repair and replacement, ask yourself:

  1. How old is the roof?

  2. How widespread is the damage?

  3. How often have you had to fix it already?

  4. What’s your budget and how long do you plan to stay in the home or building?

If the roof is still relatively young and the issue is small, repair makes sense. But if you’re dealing with repeat problems or nearing the end of the roof’s life, replacement might save you money and headaches over time.

Get an Expert Opinion (No Pressure)

At Westbank Roofing, we believe the best decisions come from having the right information. That’s why we offer professional flat roof inspections and honest advice on whether repair or replacement is the best move for your home.

No hard sell. No confusing jargon. Just real answers from a team that knows Louisiana roofs.

📞 Let’s Talk About Your Flat Roof

Got a leak? Not sure if it’s time for a patch or a full roof replacement? We’re here to help.

📞 Call Westbank Roofing: 504-340-4977
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📧 Email Us: [email protected]
📍 Proudly serving Westbank, Gretna, Harvey, Marrero & surrounding areas