White EPDM Roof vs. Black EPDM: Which One Is Better?

EPDM roofs are considered a great roofing material choice, especially for commercial buildings. However, there is common confusion when it comes to deciding between white EPDM roofing membranes vs. black EPDM.

At McClellands Contracting and Roofing, we understand that having the right information is important for making the right decisions. In this blog post, we will discuss everything you need to know about white EPDM vs. black EPDM. 

What Is An EPDM Roofing Membrane?

Before starting the comparison, it’s important to know what an EPDM roof is. EPDM roofing membranes are made from synthetic materials and are a durable option widely used in low-slope roofing projects. They’re known for their excellent durability, flexibility, and resistance to ultraviolet light and ozone.  

How Is A White EPDM Roofing Membrane Made?

White EPDM roofing membranes are made by adding titanium dioxide to the rubber compound. This additive makes the membrane white and, more importantly, helps it reflect UV rays. The reflective properties of white EPDM help reduce heat absorption, keeping buildings cooler. 

What Are The Pros Of White EPDM Roofing Membrane?

Now that you know how white EPDM roofs are created, we will discuss why they might be a great choice for your building. 

#1 Energy Efficiency

Perhaps the most significant advantage of a white EPDM roof is its ability to reflect sunlight. This reflective property can help keep buildings cooler, especially in warmer climates. By reducing the amount of heat absorbed by the roof, white EPDM can potentially lower cooling costs and energy consumption.

#2 Increased Lifespan

By reflecting UV rays rather than absorbing them, white EPDM roofing membranes may experience less degradation over time. This could potentially lead to a longer lifespan compared to its black counterpart.

#3 Environmental Impact

White EPDM can contribute to reducing the urban heat island effect, a phenomenon where urban areas are significantly warmer than surrounding rural areas due to heat-absorbing surfaces. Many white EPDM products often contain recycled content or are recyclable, further enhancing their environmental benefits.

How Does White EPDM Perform in Different Weather Conditions?

White EPDM delivers excellent performance across various weather conditions:

• Hot and Humid Summers: The reflective surface significantly reduces AC workload, providing the greatest energy savings during peak cooling months
• Rain and Wind: Color doesn’t affect weather resistance – both white and black EPDM offer identical protection against moisture and wind damage
• Hail Storms: EPDM membranes generally hold up well to most hail impact regardless of color, thanks to their flexible rubber composition

What Are The Cons Of A White EPDM Roofing Membrane?

There are certain challenges that you might face with white roofing membranes.

#1 Cost

Although white EPDM roof offers these benefits, it’s worth noting that it typically comes at a higher initial cost compared to black EPDM. The price premium ranges from $0.75-$1.25 per square foot above standard black EPDM pricing.

#2 Visibility of Dirt

One potential drawback is that dirt and debris may be more noticeable on a white surface, which could affect the roof’s appearance over time.

How Is A Black EPDM Roofing Membrane Made?

Black EPDM roofing membranes, on the other hand, contain carbon black, which gives it its characteristic dark color. This additive allows the membrane to absorb UV rays and convert them into heat.  

What Are The Pros Of Black EPDM Roofing Membranes? 

Now, we will have a look at some of the reasons that make black EPDM roofs a worthwhile choice to consider!

#1 Heat Absorption

In colder climates, the heat-absorbing properties of black EPDM roofing are beneficial. It can help warm the building during winter months, potentially reducing heating costs. Black EPDM can provide a 30-35% increase in heat retention, making it particularly valuable in regions with harsh winters.

#2 Cost-Effectiveness

Black EPDM roofing membranes are generally less expensive than their white counterpart, making it a more budget-friendly option upfront.

#3 Energy Costs

However, heat absorption can lead to increased cooling costs in warmer climates or during hot summers as the building’s air conditioning system works harder to maintain a comfortable temperature.

What Are The Cons Of A Black EPDM Roofing Membrane?

Here are the common concerns that building owners might face with black EPDM roofing membranes:

#1 Lifespan Considerations

The UV absorption may cause the material to deteriorate faster over time, potentially leading to a shorter lifespan compared to white EPDM.

Comparing White EPDM vs. Black EPDM To Make The Right Choice For Your Building

Choosing between a white EPDM roofing membrane and a black one depends on several factors:

#1 Climate

Considering the local climate is also important for determining which option is more suitable. In areas with long, hot summers, a white EPDM roof might be more beneficial due to its reflective properties.

White EPDM roofing membranes can provide quality performance even in areas with cold weather. However, the heat absorption power of black EPDM roofs can be helpful in the icy and snowy situations that we commonly face in Pittsburgh, and the nearby areas of Pennsylvania. In extremely cold climates with prolonged snow and ice, black EPDM’s heat absorption can help melt snow and reduce ice dam risks.

Additionally, if a roof receives significant shade from trees or buildings, the reflective benefits of white EPDM are diminished, making black EPDM equally effective and more cost-efficient.

#2 Energy Costs

As we have discussed, climate conditions significantly impact and are important to consider while choosing the right EPDM membrane color. 

For example, in warmer climates, white EPDM can lead to substantial energy savings. The reflective surface of white EPDM reduces heat absorption, potentially lowering cooling costs during hot summer months.

#3 Budget

If the initial cost is a primary concern, black EPDM roofing membranes might be the more attractive option. However, it’s important to factor in potential long-term energy savings when making this decision.

#4 Building Use

The purpose of the building can also influence the choice. For example, a warehouse that doesn’t require cooling might benefit more from a black EPDM roofing membrane.

On the other hand, buildings with temperature-sensitive operations, such as data centers or refrigerated warehouses, would greatly benefit from the reflective properties of white EPDM, minimizing the energy required for cooling.  

#5 Appearance 

Although not always a primary consideration for flat roofs, the color of the roof can impact the overall appearance of the building. 

A black EPDM roof can give your building a very bold and modern look that blends well with industrial or contemporary architectural styles. On the other hand, white EPDM can create a clean, bright appearance, potentially complementing lighter-colored buildings or those in areas with abundant sunshine. 

How to Save Money on Your EPDM Roof Installation

Smart planning can help you maximize your roofing investment while minimizing costs:

• Consider Roof Coatings: If you have an existing EPDM roof in good condition, applying a white reflective coating can provide similar energy benefits to white EPDM at a fraction of the replacement cost
• Ensure Proper Insulation: Quality insulation beneath your EPDM membrane maximizes energy efficiency regardless of color choice
• Check for Tax Incentives: Look into local and federal tax incentives or rebates for energy-efficient roofing materials, particularly for white EPDM installations
• Invest in Professional Installation: While EPDM is considered DIY-friendly, professional installation prevents costly future repairs and ensures warranty coverage
• Prioritize Routine Maintenance: Regular upkeep extends lifespan and prevents expensive emergency replacements

How to Maintain The Lifespan Of Your New EPDM Roofs

Regardless of whether you choose white or black EPDM, proper maintenance is very important for maintaining the lifespan of your new roof. Annual maintenance costs typically range from $0.05-$0.10 per square foot, making it an affordable way to protect your investment. Here are some general maintenance tips:

#1 Regular Inspections

Conduct visual inspections at least twice a year to check for any signs of damage or wear.

#2 Keep it Clean

Clean your roof at least two or three times a year to maintain the membrane’s appearance and durability. Remove debris, leaves, and dirt regularly to prevent ponding water and algae growth. Ensure that moss and algae that have developed on the surface are removed as soon as possible to prevent them from degrading the roofing membrane.

#3 Quick Repairs

Address any issues, such as tears or loose seams, as soon as you find them. This is only possible with regular inspections and cleaning services. Ignoring these minor signs is the main cause behind big, expensive problems.

#4 Apply Reflective Coatings

For white EPDM roofs, consider applying reflective coatings every few years to maintain the membrane’s reflectivity and extend its lifespan.

Call McClellands Contracting and Roofing For Durable EPDM Roof Installation in Pittsburgh, PA 

If you are looking for professional EPDM roof installation in Pittsburgh, PA, and the nearby areas, then we are here to assist you. Our roofers will help you choose the right material for your roofing system. Our experts have experience working with all different types of roofing materials, including EPDM, TPO, metal, and more, and will help you find the right one for your needs.

While EPDM is considered DIY-friendly, professional installation ensures proper durability and performance, preventing costly future repairs and maintaining warranty coverage.

Trust us to be your trustworthy roofing company, and we will serve you with the best valuable results in order to enhance your investments. To get a custom quote or to discuss your roofing project, feel free to call us today at (412) 353-5660.

Can I switch from black EPDM to white EPDM without replacing my entire roof?

Yes, you can apply a white reflective coating over an existing black EPDM roof in good condition. This coating provides similar energy-saving benefits to white EPDM membranes without the expense of full replacement, making it an excellent retrofit option for buildings seeking improved cooling efficiency.

How long does it take for white EPDM energy savings to offset the higher initial investment?

The payback period varies based on your climate, building size, and local energy rates, but typically ranges from 3-7 years in hot climates. Buildings with high cooling demands or those in areas with expensive electricity rates often see faster returns on their white EPDM investment.

Will snow accumulation on white EPDM roofs cause structural problems in winter?

White EPDM doesn’t increase structural risk from snow accumulation. While black EPDM melts snow faster due to heat absorption, proper roof design with adequate slope and drainage handles snow loads regardless of membrane color, making both options structurally safe when correctly installed.

Do white EPDM roofs require different installation techniques than black EPDM?

No, both white and black EPDM membranes use identical installation methods, including fully adhered, mechanically attached, or ballasted systems. The installation process, seaming techniques, and required skills remain the same regardless of color, so experienced EPDM installers can work with either membrane type.

How does roof orientation affect the performance difference between white and black EPDM?

Roof orientation matters significantly for reflective benefits. South and west-facing sections receive maximum sun exposure, where white EPDM delivers greatest cooling advantages. North-facing or heavily shaded roof areas see minimal temperature differences between colors, potentially making black EPDM equally effective in those zones.