How To Choose The Right Flat Top Roof? | DKG Roofing

Flat Top Roofing: A Guide To Selecting The Best Roof For Your House

Flat Top Roofing A Guide To Selecting The Best Roof For Your House

When choosing a roof for your home, many options are available in the market. One of the most popular choices among homeowners is flat-top roofing. 

This type of roofing is known for its clean and modern look, making it a preferred option for contemporary homes.

But before you jump into selecting a flat-top roof for your house, it’s important to understand what this type of roofing entails and why it may or may not be the best choice for your specific needs. 

This guide will take a closer look at flat-top roofing and explore its benefits, considerations, and maintenance requirements.

What Is a Flat-Top Roof?

What Is a Flat-Top Roof

Flat-top roofing, also known as low-slope roofing, is a type of roof that has a completely flat surface instead of the traditional sloping design. This type of roof is typically installed on modern homes with sleek and minimalist flat roof designs.

It has a slope angle of 2:12 or less. This means that for every horizontal foot, the roof only rises 2 inches vertically. Flat roofs may look completely flat from afar, but they do have a slight pitch to allow water to drain properly.

It is also commonly used in commercial roof buildings such as offices, retail stores, and warehouses.

Why Are Flat Roofs Popular?

Flat roofs have gained popularity in recent years due to their modern and streamlined appearance. They give buildings a clean and contemporary look, making them popular for both residential and commercial properties.

Additionally, flat roofs are more cost-effective compared to traditional sloped roofs. They require fewer commercial flat roof materials and labor during installation, resulting in lower overall flat roof costs.

What Are The Types Of Flat Roofs?

What Are The Types Of Flat Roofs

Several roofing types for flat roofs are commonly used in flat roof construction. These include:

  • Built-Up Roof (BUR)

Built-up roofing, known as tar, asphalt, and gravel, is one of the oldest and most traditional residential flat roof materials for level roofs.

It comprises multiple layers of felt or fiberglass saturated with asphalt and topped with granules of gravel or minerals. 

BUR provides excellent waterproofing and is known for its durability. However, it can be heavy and labor-intensive to install.

  • Modified Bitumen Roofs  (MB)

Modified bitumen is a modern variation of BUR. It is made from asphalt modified with a synthetic material or rubber or plastic polymers to enhance its performance.

Modified bitumen comes in rolls or sheets that are torch-applied, cold-applied, or self-adhered. It offers good flexibility, durability, and UV resistance. It is also relatively easy to install compared to BUR.

  • Single-Ply Membrane

Single-ply membranes are popular for their ease of installation and affordability. There are three main types of single-ply membranes used for flat rooftops. These are:

  • Ethylene Propylene Diene Monomer (EPDM)

EPDM rubber flat roof is a membrane that is highly durable and resistant to UV radiation, weathering, and punctures. You can get large sheets that can be fully adhered, mechanically fastened, or ballasted and cement together with gravel cement.

  • Thermoplastic Olefin (TPO)

TPO is a single-ply adhesive membrane made from polypropylene and ethylene-propylene rubber. It offers good resistance to UV radiation and chemicals. Installers heat-welded the adhesive TPO membranes together during installation.

  • Polyvinyl Chloride (PVC)

PVC is a plastic membrane with excellent durability, and chemical and fire resistance. It is usually installed by heat-welding the seams. PVC membranes are known for their energy efficiency and their reflective coating flat roof properties.

  • Spray Polyurethane Foam (SPF)

This type of roofing involves spraying foam insulation onto the roof surface, which is then coated with a protective layer. It offers excellent insulation and waterproofing properties.  

  •  Metal Roof

Metal flat roofs, such as standing seam roofs, are becoming increasingly popular for flat roofs. They are lightweight, durable, and can be made from metals like steel, aluminum, or copper. 

Metal roofs offer good resistance to fire, wind, and hail damage. They can be expensive upfront but provide long-term value because of their longevity.

Factors To Consider While Choosing The Right Flat Roof For Your House

Factors To Consider While Choosing The Right Flat Roof For Your House

Everybody wants to select the roof that’s best for their house and long last. But before installing a new roof, here are some factors you should consider:

  • Choose the right material based on your budget, climate, and desired longevity.
  • Decide on the roofing system that suits your needs. 
  • Flat rooftops should not be entirely flat. They should have a slight slope to ensure proper drainage. 
  • Consider the insulation requirements for your low-slope roof. 
  • Consider the maintenance requirements of your chosen longest-lasting flat roof material
  • Choose potential energy savings, maintenance, and repair costs over the roof’s lifespan.
  • Check the warranty offered by the manufacturer for the material, and by the roofing contractor for the installation. 
  • Familiarize yourself with the local building codes and permit requirements for flat roof replacement options.
  • Engage a reputable, experienced roofing contractor to install your flat roof repair kit or replacement. 

Pros And Cons Of Flat Roofs

Pros And Cons Of Flat Roofs

Here are some pros and cons of flat roofs:

Advantages of Flat Roofs

Disadvantages Of Flat Top Roofs

A horizontal-plane roof typically costs less to install than other roofs.

Flats are more prone to leaks because of their low slope design.

They offer a sleek and modern aesthetic for your home or business.

They require frequent maintenance (sometimes every 2-3 years) to remain watertight.

Flats are easier to access for repairs, maintenance, and insulation.

A flat roof absorbs more heat, resulting in higher energy bills.

With proper maintenance, they can last up to 40 years.

They are tending to leaks.

How Much Does It Cost To Have A Flat Roof?

How Much Does It Cost To Have A Flat Roof

The cost of a flat roof can vary depending on several factors, such as the materials used, the size of the roof, and labor costs. Typically, an average flat roof can range from $2,000 to $10,000 for installation. 

However, it is important to keep in mind that flat roofs are generally more cost-effective than other roofing options. On average, a well-installed and well-maintained flat roof can last 15 to 30 years, but some materials like EPDM or PVC can last up to 40 years or more.

How To Know When You Need To Flat-Top Roof Repair?

How To Know When You Need To Flat-Top Roof Repair

A flat roof is an important structure that protects you and your belongings from outside elements. However, like every other building component, they will wear out over time. Here are some signs of flat top roof repair:

  • Watch out for Cracks, and leakage
  • Look for Ponding Water
  • Check for Blisters
  • Consider Your Roof’s Age
  • Inspect Your Roof’s Flashing

Expert’s Tips For Choosing The Right Flat Roof For Your Home

Expert's Tips For Choosing The Right Flat Roof For Your Home

  • Consider the climate and weather conditions in your area
  • Research the different materials available for flat roofs
  • Choose a reputable and experienced roofing contractor
  • Make sure to get multiple quotes for comparison
  • Factor in long-term maintenance costs into your budget 
  • Determine the expected lifespan of the roof material 
  • Consider the slope and drainage system of your roof 
  • Think about energy efficiency and insulation options 
  • Don’t forget to check local building codes and regulations.


Selecting the right flat-top roof is a pivotal decision that impacts the longevity and performance of your property. Factors such as durability, cost-effectiveness, and maintenance requirements play a crucial role in this choice. A flat-top roof should be carefully chosen based on your long-term property goals and specific needs.

DKG Roofing contractors offer invaluable assistance in selecting the perfect flat-top roof for your property. Our team of experts provides professional advice and guidance throughout the process, ensuring that you make an informed decision tailored to your unique requirements. 

Contact us at (940) 497-2833 for more information and to benefit from our top-notch roofing services.

About DKG Roofing

With over two decades of serving homeowners in North Texas and Denton Roofing, DKG Roofing has established itself as a highly sought-after roof repair and replacement contractor.

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