How Much Does a Flat Roof Replacement Cost?

Flat Roof Replacement Costs
July 9, 2024

In Florida, flat roofs are common on both residential and commercial structures. Regardless of the specifics of your flat roof, however, sooner or later it will need replacing. And if you find yourself at the point where your flat roof is starting to fail, then you probably have questions about flat roof replacement costs in Florida.

Luckily, PITCH Roofing is here to answer all of them. Right off the bat, we can tell you that flat roof replacements cost between $8,000 and $20,000 on average in Florida. But that’s a pretty big range. To get more specific numbers tailored to your roof and your costs, we’ll have to talk about the different factors that will affect your flat roof replacement costs.

Flat Roof Replacement Costs by Material

Flat Roof Replacement Costs by Material


How much you pay for a flat roof replacement will depend, in large part, on what you’re having installed. While there are plenty of flat roofing options on the Florida market, the two most popular choices that we see are modified bitumen and TPO roofing.

These are both great flat roofing systems that can offer you great, long-term protection. But to help you plan for your new roof, let’s talk about their respective performances and flat roof replacement costs.

Cost to Replace a Modified Bitumen Roof

Modified bitumen is an excellent flat roof replacement option. This classic roofing material is made primarily of asphalt that’s been reinforced by rubber and fiberglass. The final result is a water-resistant flat roof that can effectively keep your decking protected and dry.

Thanks to these protections, you can expect your modified bitumen roof to last for about 20 years. But how much does a flat roof replacement cost when you choose modified bitumen?

For a mod bit flat roof, expect to pay four to eight dollars per square foot. In other words, if you have a roof that’s around 2,000 square feet, you’ll pay $8,000 to $16,000 for a modified bitumen roof replacement. This makes modified bitumen an excellent option if you want a durable roof with low flat roof replacement costs!

Cost to Replace a TPO Flat Roof

If mod bit roofing is the classic option, TPO roofing is the latest roofing technology. Made in the 90s, thermoplastic polyolefin is a membrane roofing system. In other words, it’s a single-ply blend of rubberized polymer that is installed across your flat roof to create a waterproof barrier. While pooling shouldn’t be a regular issue when your flat roof is installed correctly, this is one of the best flat roofing options for making sure trapped water doesn’t penetrate into your roofing system.

Since this roofing technology is so new, even roofing experts aren’t 100% sure of how long it can last. However, our best guesses say that a TPO roof will last between 20 and 30 years in Florida. As a result, it appeals to property owners who want a flat roof that will last as long as possible.

As you might guess, though, a longer lifespan usually comes with higher flat roof replacement costs. Specifically, TPO roofing costs between five and 10 dollars per square foot. So if we’re still looking at a 2,000-square-foot roof replacement, then your total roof replacement costs will be between $10,000 and $20,000 for a TPO roof.

These price ranges are a little more specific than the average flat roof replacement costs that we opened with, but not by much. To get a better idea of where on the spectrum your roof replacement will fall, it’s important to consider the size and state of your roof.

Other Factors in Flat Roof Replacement Costs

Other Factors in Flat Roof Replacement Costs

The reason that roofers can’t just list our flat roof replacement prices is that there are just too many variables. Every job has its own unique factors that determine the final price paid by the property owner. However, while we can’t promise you a certain price without looking at your roof first, we can tell you what factors could raise or lower your roof replacement costs.

The factors that will influence your flat roof replacement costs include:

  • Existing Roof Leaks: It’s natural to think that any damage to your roof doesn’t matter since you’re replacing the entire thing. But if your flat roof has leaks, especially multiple leaks, it could mean that your roof decking has been damaged. If this happens, you may need to spend extra on removing and replacing damaged sections of decking.
  • Roofing Features: Unique features on your roof will always drive up costs. These include things like skylights, chimneys, and HVAC systems on your roof, to name a few. Since roofers have to work around these, they contribute to both labor and material costs.
  • Roof Slope: While we call them flat roofs, these roofing systems are more accurately low-slope roofs. This means they’re slightly tilted to allow water to move off of your structure. If your roof hasn’t been replaced in a while, you may need extra materials to increase the slope to be in line with county permitting requirements.
  • Roof Access: The easier it is to access your flat roof, the less your flat roof replacement will cost. This is because difficult-to-reach roofs can slow down a roof replacement and drive up labor costs. That’s why it pays to be ready for your roof replacement and ensure that contractors can access your roof!

Get Your Personalized Flat Roof Replacement Estimate

If you want to know your flat roof replacement costs, there’s only one way to get a 100% reliable number: a quote. To get your free, no-obligation roofing estimate from Pitch, all you have to do is call us at 727-607-4280, schedule your free estimate online, or sign up for an online-only estimate. Or, if you’re still looking for a ballpark figure, you can check out our roof replacement cost calculator that gives you a number in seconds.

Everyone wants to keep flat roof replacement costs low. But just as important as keeping costs low is getting a great value for your new flat roof. To do that, you’ll need experienced flat roofing contractors, and that’s exactly what we have at Pitch. As local roofers based here in Pinellas County, we know Florida flat roofing better than anyone.

If you want to know how much your flat roof replacement will cost, let Pitch give you answers you can trust. As your reliable community roofing partners, we’ll work with you to get you a great roof at an even better price!

Last Updated:July 9, 2024