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How Does TPO Compare to EPDM Roofing?
When it comes to flat roofing materials, TPO (Thermoplastic Polyolefin) and EPDM (Ethylene Propylene Diene Monomer) are two of the most popular options available because of their proven performance and cost-effectiveness for flat roofing systems. EPDM has been a trusted choice for over 60 years, while TPO has gained significant traction since its introduction around 20-30 years ago. Despite its shorter history, TPO is rapidly capturing a larger share of the flat roofing market, and for good reason.
Let’s break down the key differences and advantages of each to help you decide which is the better fit for your roofing needs. And don’t forget, if you would like a consultation with our flat roofers, you can reach out to us anytime!
Durability & Puncture Resistance
If durability is a priority for your flat roof, TPO is often the better choice. Colorado’s weather, with hail storms and strong winds, demands a roofing material that can withstand these challenges. Denver, for example, experiences an average of 10 hail storms per year, making it essential to choose a roof that can endure such frequent impacts. TPO membranes generally offer greater resistance to punctures compared to EPDM, which can result in fewer repairs and lower maintenance costs over time. This makes TPO an excellent option for property owners in the Denver area who want long-lasting protection against extreme weather conditions.
Ease of Repair
TPO is also easier to repair than EPDM. When TPO is damaged, patches can be heat-welded to create a solid, watertight seal. In contrast, EPDM requires a more complicated repair process. EPDM seams are typically taped, and in colder temperatures, repairs often require temporary fixes until warmer weather allows for proper adhesion. This makes TPO a more reliable option for quick, effective repairs in any season.
Expansion and Contraction
Colorado’s fluctuating temperatures can cause roofing materials to expand and contract. TPO performs better under these conditions because it is less prone to shrinking than EPDM. Shrinkage in EPDM can lead to issues with seams, edges, flashing, and penetrations, which could result in leaks or other problems over time.
Energy Efficiency
TPO membranes are highly reflective, making them an energy-efficient choice for buildings in sunny climates like Denver’s. Studies show that TPO roofs can reduce cooling costs by up to 15-20% compared to EPDM roofs, which absorb more heat due to their darker surface. This makes TPO a more cost-effective option for energy-conscious property owners. The white surface of TPO reflects sunlight, helping to keep buildings cooler and reducing air conditioning costs. In contrast, EPDM typically comes in darker colors, which absorb heat and can increase cooling expenses. Since cooling costs are often higher than heating costs, TPO is the more energy-efficient option.
Ease of Installation
Both TPO and EPDM are relatively easy to install, but there are some differences in the process. EPDM is typically mechanically fastened and taped at the seams, whereas TPO is adhered chemically and heat-welded. Heat welding creates a stronger bond, particularly during cold weather, making TPO a more reliable choice for winter installations.
Seam Strength
The strength of the seams is crucial for the longevity of a flat roof. TPO’s heat-welded seams are generally stronger than the taped seams of EPDM. This added strength reduces the likelihood of leaks developing over time, giving TPO an edge in overall performance and reliability.
Restoration Process
Both TPO and EPDM roofs can be restored using silicone roof coatings, which extend the life of the roof by sealing cracks and worn areas. With proper application, these coatings can add 10 to 15 years to the lifespan of your roof, providing a cost-effective solution for aging roofing systems. However, EPDM requires an additional primer before applying the coating because of a film on its surface that can prevent proper adhesion. TPO, on the other hand, can be coated more easily, simplifying the restoration process.
Ballasted Roofs and Repairs
Ballasted EPDM roofs, also known as tar-and-gravel or built-up roofs, can be durable but present challenges during repairs. To access damaged areas, all gravel and dirt must be removed, which is labor-intensive and costly. In contrast, TPO systems do not require this extra effort, making repairs quicker and more cost-effective.
So, Which One Is Better?
Based on the comparisons above, TPO emerges as the better choice for most flat roofing applications. While EPDM has proven to be a reliable material over decades, TPO offers several distinct advantages, including better durability, stronger seams, easier repairs, and improved energy efficiency. These benefits make TPO a smart investment for property owners in Denver and the surrounding areas.
Why Choose Maxx Roof LLC for Your Flat Roofing Needs?
At Maxx Roof LLC, we specialize in flat roof installations, repairs, and replacements throughout the Denver, CO area. Our team has extensive experience with both TPO and EPDM roofing systems, ensuring you get expert advice tailored to your specific needs. We use only high-quality materials and provide industry-leading warranties to give you peace of mind.
Whether you’re looking to install a new flat roof, restore an existing one, or simply need a professional inspection, we’re here to help. Contact Maxx Roof LLC today for a no-obligation inspection and estimate—we’ll help you choose the best roofing solution for your property!
We Service All Of Denver And Nearby Cities
Our service area covers Denver, CO and all nearby cities, so if your home or commercial property is located anywhere in the Denver region, give us a call today. If your property is located in the mountains or outside of our normal service area, we may be able to provide service still, so don’t hesitate to give us a call and discuss your roofing needs.
At Maxx Roof LLC, we provide flat roofing services across Denver, CO and the neighboring areas. Some of the nearby cities that we service are:
- Denver, CO
- Lakewood, CO
- Castle Rock, CO
- Arvada, CO
- Aurora, CO
- Westminster, CO
- Boulder, CO, Broomfield, CO
- Littleton, CO
- Englewood, CO
- Centennial, CO
- Parker, CO
- Longmont, CO
- Lafayette, CO
- Superior, CO
- Thornton, CO
- Wheat Ridge, CO
- Golden, CO
- Morrison, CO
- Brighton, CO
- Commerce City, CO
- Watkins, CO
- Highlands Ranch, CO
- Lone Tree, CO
- Edgewater, CO
- Gunbarrel, CO
- Firestone, CO
- Erie, CO
- Strasburg, CO
