EPDM vs PVC Roofing
When comparing flat roofing systems, one of the most common debates is between EPDM roofing and PVC roofing. Both materials are widely used for flat roof applications, each offering distinct advantages and drawbacks.
While PVC roofing is popular in commercial settings, EPDM roofing stands out for its durability, cost-effectiveness, and ease of installation. In this post, we explore the differences between EPDM and PVC roofing, highlighting why we believe EPDM is often the better choice for long-term performance in both commercial and residential projects.
Understanding EPDM Roofing
EPDM roofing is a synthetic rubber membrane commonly used in flat roof systems. It has been a preferred choice for decades due to its durability and affordability.
Advantages of EPDM Roofing
Long Lifespan
EPDM roofs can last 50+ years with proper maintenance, making them one of the longest-lasting flat roofing options available.
Cost-Effective
Compared to PVC and many other flat roofing systems, EPDM roofing is significantly more affordable in terms of both material and installation costs. Due to its ease of installation, many DIYers choose to install it themselves, further reducing overall project costs.
Superior Weather Resistance
EPDM is highly resistant to UV rays, extreme temperatures, and hail, making it an excellent option for various climates.
Ease of Installation and Repair
EPDM is available in large sheets, reducing the number of seams where leaks can occur. It can be installed using adhesive or mechanically fastened. For best results, we always recommend adhering EPDM to the roof deck, as this provides the most effective seal against water ingress and weathering. Repairs are simple and inexpensive compared to PVC.
Eco-Friendly Option
Made primarily from recycled materials, EPDM is a sustainable roofing choice. Additionally, it is fully recyclable at the end of its life cycle.
H3 - Disadvantages of EPDM Roofing
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Vulnerability to Punctures – While highly durable, EPDM can be damaged by sharp objects or heavy foot traffic if not adequately protected.
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Dark Surface Retains Heat – Standard black EPDM absorbs heat, though reflective coatings are available to improve energy efficiency.
Understanding PVC Roofing
PVC (Polyvinyl Chloride) roofing is a thermoplastic membrane commonly used in commercial flat roofing systems. It offers unique benefits but also has drawbacks that may make it less appealing than EPDM roofing.
Advantages of PVC Roofing
Energy Efficiency
PVC roofing typically comes in a white or light-coloured membrane that reflects sunlight, helping to reduce cooling costs in warm climates.
Chemical Resistance
PVC is highly resistant to chemical exposure, making it a preferred choice for restaurants and industrial buildings.
Durable and Puncture-Resistant
PVC is reinforced with polyester or fibreglass, making it more puncture-resistant than EPDM.
Disadvantages of PVC Roofing
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Higher Cost – PVC roofing is more expensive in both material and installation costs.
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Brittle Over Time – The plasticisers that make PVC flexible degrade over time, causing the material to become brittle and prone to cracking.
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Shorter Lifespan – While durable, PVC roofing typically lasts 20–30 years, compared to 50+ years for EPDM.
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Environmental Concerns – PVC contains chlorine, which is not environmentally friendly, and it is more difficult to recycle compared to EPDM.
Why EPDM Roofing is the Best Choice for Most Flat Roof Systems
While both EPDM and PVC roofing offer unique benefits, EPDM roofing is often the superior choice due to its longevity, affordability, and ease of maintenance. Here’s why it stands out:
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Better Value for Money – EPDM provides long-term durability at a lower upfront cost compared to PVC.
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Low Maintenance Costs – Repairs are straightforward and inexpensive, making EPDM a cost-effective option over its lifespan.
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Superior Flexibility – EPDM remains flexible in extreme temperatures, reducing the risk of cracking over time.
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Eco-Friendly Alternative – Its recyclable nature and minimal environmental impact make it a more sustainable choice for flat roofing.
Conclusion
While PVC roofing has its benefits, when compared to EPDM, especially our TRC Techno EPDM membrane, the advantages of synthetic rubber outweigh the reflective properties and chemical resistance of PVC.
For those looking to reduce installation costs, increase lifespan, and choose a more sustainable roofing option, EPDM is the clear choice.
As well as being highly beneficial for both residential and commercial applications, our TRC Techno EPDM Membrane comes with a 20-year downloadable product warranty. We also provide a variety of training resources, including:
If you're looking for a long-lasting, cost-effective, and eco-friendly flat roofing system, EPDM is the ultimate choice.
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