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Flat Roof Replacement & Repair

Flat Roofing

Residential flat roofs have been gaining popularity for their style throughout South Florida. Residential applications of flat roofs are used for carports, patio coverage, garages, and even overall modern home designs. Whale Roofing and Construction has been a leader in the industry for providing reliable and durable flat roofs, quality workmanship, and attention to detail.

There are many ways to install a flat roof depending on the project’s needs. Whale Roofing and Construction uses a Modified Bitumen 3-Ply System when installing a flat roof to ensure longevity. Using only the highest quality products, Whale Roofing and Construction exclusively uses Polyglass products by Mapei Group.

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Aerial view of a modern house with a flat roof under construction, featuring an unfinished backyard and pool in a residential neighborhood with a golf course nearby.
A modern two-story house under construction with boarded windows and a "Whale Roofing & Construction" sign out front. Construction materials and a dumpster are visible, suggesting flat roof repair or replacement work in progress.

What is a Modified Bitumen System?

A Modified Bitumen system is used for low slope or flat roofs. It is comprised of multiple membranes laid on top of the substrate (base material) of the roof. These membranes are ideal for extreme temperature changes to allow the roof to expand and contract which makes them a great choice for the South Florida weather.

Benefits of a Modified Bitumen System:

  • Ease of installation and repair
  • Tear resistant
  • Waterproof
  • Energy Efficient

While there are many ways to install a flat roof, using a Modified Bitumen 3-Ply System is superior.

Unlike a traditional sloped roof that allows for debris to roll off of it, flat roofs require a different level of maintenance in order to stay pristine.

How To Maintain A Flat Roof

While there are many ways to install a flat roof, using a Modified Bitumen 3-Ply System is superior.

Unlike a traditional sloped roof that allows for debris to roll off of it, flat roofs require a different level of maintenance in order to stay pristine.

  • Clean flat roof regularly and remove any debris
  • Look for leaks twice a year (before and after hurricane season is optimal). If you find a leak contact Whale Roofing and Construction right away to schedule a repair. This will prevent further water damage to your home!
  • Ensure all trees and vegetation are kept away from the roof surface
  • Reduce potential for punctures of the membranes and have walk pads installed for maintenance workers
  • Adhere to warrantee guidelines
Aerial view of a large house under construction with a gray roof, surrounded by landscaping, construction materials, a truck, and a swimming pool nearby.

Why Choose Whale Roofing
and Construction

Whale Roofing and Construction is pleased to offer flat roofing as part of their roofing services. We understand the ins and outs of flat roofing and use only the highest quality products to leave you with an aesthetically pleasing roof that will last! To find out more about flat roofing for your home contact Whale Roofing and Construction today for a FREE estimate!

A modern, two-story white building with large glass balconies and a flat roof is shown under construction, surrounded by palm trees and nearby high-rise buildings—ideal for those seeking expert flat roof repair.

Frequently Asked Questions

How much does it cost to have a flat roof installed or replaced?
The cost of a flat roof depends on several factors, including roof size, material type, accessibility, and existing damage. Prices can vary widely, but flat roofs are typically priced per square foot and may cost more than shingles due to specialized materials and labor requirements.
On average, flat roof replacement falls within a mid-to-high price range compared to traditional shingle roofs. Systems like modified bitumen, TPO, or PVC tend to cost more upfront but offer better durability and performance when properly installed.
Rolled roofing and some modified bitumen systems are often the most budget-friendly options. However, a lower upfront cost may come with a shorter lifespan and higher maintenance needs. Choosing the cheapest option isn’t always the most cost-effective long-term.
Common issues include ponding water, membrane cracks, seam failures, flashing leaks, clogged drains, and improper slope. Because flat roofs don’t shed water as quickly as sloped roofs, small issues can escalate if not addressed early.
Flat roofs generally require more maintenance, are more prone to water pooling, and may have a shorter lifespan than pitched roofs if not properly designed or maintained. Installation quality is especially critical for flat roofing performance.
Insurance providers may view flat roofs as higher risk due to their susceptibility to leaks, drainage issues, and storm damage. Some policies limit coverage or require more frequent inspections, especially for older flat roof systems.
Lifespan depends on the material used. Many flat roofing systems last 15–30 years, with regular maintenance and timely repairs. Proper installation, drainage, and routine inspections play a major role in longevity.

Look for contractors with specific flat roofing experience, proper licensing and insurance, strong local reviews, and familiarity with multiple flat roof systems. Flat roofing is a specialty; experience matters more than general roofing knowledge.

Ask about material options, drainage solutions, warranty coverage, past flat roof projects, and how potential issues like ponding water will be addressed. A reputable contractor will explain their approach clearly and provide a detailed written estimate.
In most residential cases, an engineer is not required. However, an engineer may be necessary if structural changes, slope modifications, or load concerns are involved. A professional roofing contractor can advise if an engineering review is needed.