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Will a Flat Roof Last Longer Than a Shingle Roof?

Posted on January 20, 2025

Will a Flat Roof Last Longer Than a Shingle Roof?

When deciding on a roof type, two common options that most homeowners consider are flat roofs and shingle roofs. Each comes with its own advantages and disadvantages, making the choice highly dependent on your specific needs. Among the many factors to assess, lifespan stands out as a key consideration. This leads to an important question: Will a flat roof last longer than a shingle roof?

To help you out, this blog post explores flat and shingle roofs, the factors affecting their lifespan, and a comparison of their average lifespans to help you choose the right one.

What Are Shingle Roofs?.

Shingle Roof

Shingles are a popular and reliable choice for roofs, made up of overlapping pieces that are typically flat and rectangular. Installed from the bottom up, the shingles create a waterproof barrier that channels water away from the roof so the building stays protected. 

Asphalt shingles are the most common due to their affordability, lightweight nature, and durability. However, shingles can also come in various materials, offering different aesthetic options and levels of strength. Carefully layered during installation to prevent leaks, shingles enhance the visual appeal of buildings while contributing to energy efficiency by reflecting heat, depending on their color and material.

Average Lifespan

Asphalt shingles generally last 15 to 30 years, but with proper care, premium options can extend their lifespan to up to 50 years.

Types of Shingles And Their Lifespan

A. 3-Tab Shingles

3 Tab Shingles 7 1

Affordable and common, 3-tab shingles last about 10 to 20 years but offer limited customization and less weather resistance.

B. Dimensional Shingles

Thicker and more durable, dimensional shingles last around 20 to 30 years and handle high winds and extreme weather well.

C. Luxury Shingles

Luxury Shingles 3 1

The longest-lasting shingles​, luxury shingles replicate natural materials like slate, lasting up to 50 years. They’re durable but more expensive and heavier.

Also Read: 3-Tab vs. Architectural Shingles vs. Luxury Shingles (2024 Guide)

What Are Flat Roofs?

Flat Roofs 1

A flat roof is a nearly level roof type with a slight slope, usually no more than 10 degrees, designed to aid water drainage. Flat roofs are often found in regions with high temperatures. They are popular for both residential and commercial buildings due to their ability to maximize usable space, such as rooftop gardens, patios, or solar panel installations. 

The construction of flat roofs typically requires fewer materials and labor compared to pitched roofs, making them a cost-effective choice. However, their longevity depends on the quality of materials used and regular maintenance practices to prevent issues like water pooling and leaks.

Average Lifespan

Typically, flat roofs usually last 10 to 30 years, with some materials like metal reaching over 50 years with proper maintenance, offering long-term durability.

Types of Flat Roofs And Their Lifespan

A. Built-Up Roof (BUR)

BUR is made of asphalt and fabric layers, topped with gravel or a reflective coating. It lasts 10 to 30 years but can develop hard-to-find leaks.

B. Modified Bitumen

Modified Bitumen 5 1

Reinforced with polyester or fiberglass mats, modified bitumen is flexible and easier to repair than BUR. It also lasts 10 to 30 years but may be prone to punctures.

C. Ethylene Propylene Diene Monomer (EPDM)

EPDM Roof 12

A durable rubber membrane with a lifespan of up to 50 years, EPDM, though easy to install, may shrink over time and leak if not maintained.

D. Thermoplastic Polyolefin (TPO)

TPO Roof
TPO Roof

The next option, TPO, is energy-efficient and easy to install, lasting 15 to 30 years. It requires regular maintenance to prevent dirt buildup that can affect performance.

E. Polyvinyl Chloride (PVC)

PVC Roof 5 1
PVC Roof

PVC is a durable roofing material resistant to chemicals, fire, and UV rays. It lasts 20 to 30 years but needs regular inspections to avoid punctures and maintain longevity.

F. Metal Roof

Metal Roof 23 1
Metal Roof

Lastly, metal roofs are durable and waterproof, lasting 40 to 70 years. They resist fire, pests, and harsh weather, making them a reliable choice for any building.

Answering The Main Question: Will a Flat Roof Last Longer Than a Shingle Roof?

Before comparing the lifespan of flat roofs versus shingle roofs, it is important to know that the answer depends on several factors, including the materials used, installation quality, and ongoing maintenance. 

Both flat roofs and shingles can last about the same amount of time, with shingle roofs typically lasting 15 to 30 years and flat roofs about 10 to 30 years. However, flat roofs often require more maintenance to prevent issues like water pooling, which can shorten their lifespan. As a result, a well-maintained shingle roof might last slightly longer than a flat roof. 

But for those seeking a longer-lasting option, metal roofs for flat roofs are worth considering. With a lifespan of 40 to 70 years, metal roofs offer exceptional durability, though they come at a higher cost. Ultimately, the actual durability of any roof will depend on specific conditions and proper upkeep.

Understanding The Pros And Cons: Flat Roofing​ Systems vs. Shingle Roof​s

Let’s dive deeper into the advantages and drawbacks of flat roofing compared to shingled roofs to help you make the right decision:

FEATURESHINGLE ROOFSFLAT ROOFS
CostTypically affordable, especially 3-tab asphalt shingles.More affordable to install due to fewer materials.
DurabilityLasts 15 to 30 years, but may get damaged by weather.Has a shorter lifespan and may suffer from water pooling.
AestheticsOffers a classic look with various colors and styles.More functional than stylish, often appearing plain.
InstallationQuick and easy to install with minimal prep.Requires careful installation to prevent drainage problems.
MaintenanceLow maintenance, though moss and algae can grow.Easy to inspect, but might need more upkeep due to drainage issues.
Weather ResistanceCan be damaged by high winds and hail.Better at handling water, but still may leak.
Energy EfficiencyCan absorb heat, raising cooling costs in summer.Needs more insulation for energy efficiency, which could increase costs.
Environmental ImpactSometimes made from recyclable materials but harms the environment during manufacturing.Can support solar panels, which saves energy.

Choosing The Right Roof For Your Home

To wrap things up, let’s go over the factors to consider when deciding between a flat roofing system and a shingled roof for your home:

1. Design and Aesthetics

Choose shingle roofs for a traditional look in various styles and colors that boost curb appeal. Flat roofs are better for modern designs and are ideal if you plan to use the rooftop for gardens or solar panels.

2. Water Drainage and Waterproofing

Go for shingle roofs if you live in a region with heavy rain, as their sloped design effectively drains water and reduces leaks. Flat roofs are an option if you’re prepared to invest in proper waterproofing and drainage systems and commit to regular maintenance.

3. Durability and Lifespan

Shingle roofs are more durable, with a lifespan of 15 to 30 years, making them a better long-term option. Flat roofs sometimes have a shorter lifespan of 10 to 30 years, but are suitable if you’re looking for a modern design and don’t mind more frequent replacements.

4. Cost

For a lower initial cost, flat roofs are a good choice. If you’re willing to invest more upfront, shingle roofs offer better value over time due to their durability and lower maintenance needs.

5. Maintenance Requirements

Shingle roofs require less maintenance, making them a lower commitment option. Flat roofs need more frequent inspections and upkeep, so choose them only if you’re ready to handle the extra care.

6. Climate Considerations

In areas with heavy rain, shingle roofs are a better fit as they handle precipitation effectively. Flat roofs are ideal for dry climates or urban spaces where rooftop utility is essential, provided drainage solutions are in place.

Flat Roof or Shingle Roof? Let Rеnova Roofing & Construction Help You Decide!

For high-quality roofing services, Renova Roofing & Construction is the go-to choice for homeowners. Whether you need durable flat roof services for your commercial property or the classic appeal of shingle roofing services for your home, Renova has you covered. Our team provides professional installation and repair services, ensuring long-lasting protection and improving the value of your property. Give us a call at (601) 647-3433 today!