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What Is EPDM Roofing Material? (Advantages & Disadvantages)

Posted on August 24, 2024

epdm roofing material

If your home is on the more modern side, it may have a flat roof. These roofs provide ample space and a unique look to any property. However, these roofs need extra help to ensure they’re durable, waterproof, and able to hand the elements. That’s what makes choosing the right roofing material so important.

While there are many flat roofing options to choose from, in this blog post, we’ll discuss EPDM, one of the most popular. We’ll explain both its advantages and disadvantages so you can have a better understanding and feel more confident about your choice.

What Is EPDM Roofing Material?

EPDM Roofing

For many years, the roofing industry has relied on EPDM, a durable synthetic rubber, as a flat roofing material for both residential and commercial properties.

EPDM is typically available in black or white, with black being more common. It is supplied in large rolls and can be installed as a single sheet. This reduces the number of seams and the risk of leaks, enhancing its durability.

While EPDM is a popular choice, it has various pros and cons that homeowners should consider to make the best roofing decisions.

Also Read: How Much Does EPDM Roofing Cost In 2024?

What Are The Advantages Of EPDM?

#1. Cost-Effectiveness

Choosing EPDM for your property can be a smart financial decision. It typically costs less to install than other roofing materials like TPO, and PVC, with prices usually ranging from $5.25 to $9.50 per square foot. Despite a higher initial expense, EPDM’s durability and minimal maintenance requirements result in fewer repairs and replacements, leading to long-term savings.

#2. Durability and Longevity

Designed to withstand harsh weather, such as extreme temperatures, hail, and high winds, EPDM remains resilient over time. With the right type of maintenance, it can last 20 to 30 years, making it a dependable choice for varying climates. Its resistance to cracking and degradation also ensures a long-lasting and effective roof.

#3. Energy Efficiency

When lighter color options are chosen, EPDM can enhance energy efficiency. Light shades reflect more sunlight, helping to keep buildings cooler and reducing the need for air conditioning in hot weather. Combining EPDM with insulation further improves thermal performance, leading to lower heating and cooling costs throughout the year.

#4. Versatility

The versatility of EPDM allows it to be used on a wide range of roofs, regardless if it’s an apartment complex, modern home, or industrial facility. Its flexibility accommodates various architectural styles and complex roof shapes, making it suitable for diverse design needs and unique building features.

#5. Noise Reduction

The sound-dampening properties of EPDM make it an excellent choice for reducing external noise. Its rubber composition absorbs and blocks noise, creating a quieter indoor environment. This is especially beneficial for properties situated in noisy areas, improving overall comfort.

#6. Fire Resistance

EPDM provides added safety with its fire-resistant features. It resists ignition and slows the spread of flames, offering extra protection for buildings. This makes it a valuable option in areas prone to wildfires or where fire safety is a major concern, enhancing overall risk management.

#7. Low Maintenance

This roofing material is prized for its minimal maintenance requirements. Unlike other options that need regular inspections and repairs, it is designed to be durable with little upkeep. While periodic inspections are recommended, overall maintenance is less frequent and therefore, less expensive, allowing property owners to focus on other aspects of property management.

#8. Water Resistance

This roofing choice is perfect for flat and low-slope roofs where pooling water can be a problem. The seamless installation creates a continuous barrier that prevents water from seeping through, protecting the underlying structure from leaks and damage. This makes it especially useful in areas with heavy rain or snow, reducing the risk of mold and structural deterioration.

#8. Aesthetic Options

Available in various colors and finishes, EPDM offers choices beyond the traditional black. This range allows homeowners and builders to select a style that complements their building’s appearance, enhancing its overall visual appeal and aligning with personal design preferences.

What Are The Disadvantages Of EPDM?

#1. Shrinkage Over Time

Exposure to the elements can cause EPDM roofs to shrink, leading to seam separation and cracks. This shrinkage may start as early as seven years after installation, especially if the roof was not installed properly. Regular inspections are needed to catch and seal leaks before they cause extensive damage.

#2. Vulnerability Around Protrusions

Areas where pipes, vents, and HVAC units penetrate the roof can be weak points. If these areas are not properly sealed, they can lead to leaks and long-term damage, which might not be easily noticeable until significant problems develop.

#3. Heat Absorption Issues

The black color of standard EPDM roofing material may absorb excessive heat in hot climates, which reduces its energy efficiency. This can increase cooling costs for buildings, especially those requiring consistent indoor temperatures.

#4. Potential for Punctures

Even though EPDM is durable, it can still be punctured by sharp objects or heavy foot traffic. While repairs are typically straightforward, the risk of punctures means that it’s necessary to carefully manage roof access and maintenance. Its relatively thin layer can be easily punctured by debris or damaged by foot traffic, requiring prompt repairs to avoid water damage. Over time, these repair costs can add up.

#5. Susceptibility To UV Damage

While EPDM is designed to resist UV rays, extended exposure can still cause degradation. Over time, this can result in cracking or chalking of the surface, affecting both performance and appearance. This issue is more noticeable in areas with frequent sun, potentially requiring more frequent inspections and maintenance.

#6. Limited Insulation Properties

EPDM does not offer significant insulation on its own, which can lead to higher energy costs in both hot and cold climates. Although additional insulation can be added, this increases the overall cost and complexity of the roof installation. Property owners seeking better thermal performance may need to explore other options.

#7. Potential for Mold and Algae Growth

In humid or moist conditions, EPDM can be prone to mold and algae growth. This not only affects the roof’s appearance but can also lead to material deterioration over time. Regular cleaning and maintenance are necessary to prevent these issues, adding to the upkeep required.

#8. Challenges with Adhesion

The adhesive used for EPDM installation can be sensitive to temperature and humidity. If conditions are not ideal, adhesion might be compromised, leading to potential issues like lifting or peeling. Proper installation conditions are crucial to maintaining the roof’s integrity.

Can EPDM Be Applied In Any Weather Conditions?

1.  Hot Weather

It’s best to install EPDM membranes in hot weather, as they remain flexible and the process is generally quick and less labor-intensive than traditional methods. However, it’s important that the substrate is completely dry to ensure that adhesives and primers cure properly.

2. Cold Weather

Installation in cold weather is possible, but conditions should not be too harsh. The membrane requires extra time to be malleable, and adhesives can typically only be used when the temperature is between 59-77°F.  You should avoid using water-based and spray adhesives in temperatures below 41°F to prevent bonding issues.

3. Wet Weather

For a successful installation, the weather must be dry. Rain, snow, or freezing temperatures can cause adhesives to fail. Ensuring that the substrate is as dry as possible is crucial for achieving a strong, secure bond.

The Cost Of EPDM Roofing Material

Material Costs

General Price Range

EPDM flat roof materials generally cost between $3 and $12 per square foot, with most prices ranging from $4 to $6.50 per square foot.

Thickness Variations:

  • 45 mil (1.1 mm): $0.50 – $0.70 per square foot (lifespan: around 12 years)
  • 60 – 75 mil: $0.75 – $1.50 per square foot (lifespan: approximately 12 to 17 years)
  • 90 mil: $1.30 – $2.00 per square foot (lifespan: over 25 years)

Installation Costs

1. Labor Costs

The labor for the installation typically costs between $1.50 and $3 per square foot, adding an extra $150 to $300 per 100 square feet to the total project cost.

2. Total Project Cost

For a 1,500 square foot roof, the complete installation cost, including both materials and labor, ranges from $6,000 to $12,000. Complex installations or thicker materials can push costs up to $17,000.

Summary of Costs

  • Low-End Estimate: Around $4,360 for a basic 1,500 square foot installation.
  • Average Cost: Between $7,300 and $9,000, including materials and labor.
  • High-End Estimate: Up to $17,000 for more intricate installations or higher-quality materials.

Can EPDM Be Installed As A DIY Project Or Is Professional Help Needed?

Although installing EPDM can be done on your own, it is highly advised that you have professional assistance. In order to prevent leaks and ensure the longevity of the roof, appropriate installation must be ensured by professionals, who have the necessary equipment and skills. Investing in a competent installation can prevent future problems and give you confidence in the long-term performance of your roof.

Explore The Best EPDM Roofing Solutions With B&A Roofing

For flat or low-slope roofs, EPDM offers many benefits, making it a popular choice for both residential and commercial properties. While it has numerous advantages, it’s essential to weigh its drawbacks and assess your specific needs. To ensure a reliable and well-installed EPDM roofing system, consult with a qualified roofing professional. They can recommend the best system for your property and ensure proper installation, helping you confidently select a roofing solution that will provide long-term protection and peace of mind.
To get the best EPDM roofing services, look no further than the team at B&A Roofing. Our skilled team specializes in providing long-lasting and reasonably priced roofing solutions that are customized to meet your needs. We guarantee the durability and dependability of your EPDM roof with our dedication to high-quality, expert installation. Count on us to manage your roofing job skillfully and maintain the safety of your property for many years to come. Call us today at (601) 520-3183 to speak with one of our experts.

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