Are you tired of fixing leaky roofs? Is the frequent replacement cost slowly getting out of control? Do you want to replace the roof itself? Then, it is the right time to compare the EPDM waterproofing membrane with the others available in the market.
EPDM membrane and leak-free roofs are often named in one breath, especially in regions having extreme and uncertain weather. However, there are PVC membranes, TPO, and Bituminous membranes, as well. All these belong to the geo membrane category.
But how does EPDM waterproofing compare to the others? We will break that down in this blog! First, let’s understand what are geo membranes:
What is an EPDM Waterproofing Membrane?
EPDM membrane is a synthetic rubber known extensively for its durability, flexibility, and weatherproofing. While the common EPDM waterproofing membrane application includes using them on roofs. EPDM waterproofing membrane is also used in lining ponds and tanks.
Key Features of EPDM waterproofing membrane:
- Weather Resistance: EPDM membrane can withstand UV radiation, ozone, and temperature variations.
- High Flexibility: EPDM waterproofing membrane stretches without breaking, making it suitable for structures that experience movement.
- Longevity: Can last over 50 years with proper installation and maintenance.
- Sustainable: EPDM is recyclable and has a low environmental impact.
- Easy Installation: Available in large sheets, reducing the need for seams and enhancing waterproofing efficiency.
- Chemical Resistance: Resistant to acids, alkalis, and other chemicals, making it suitable for industrial applications.
Comparing EPDM Waterproofing with Other Geo membranes
Before making a significant investment like buying a waterproofing membrane, comparing them is essential. You will gain insights about many things by comparison. For example, suitable areas of application, longevity, limitations, and pricing. Out of all the geo membranes available in the market, the most common ones are- TPO, PVC, Bituminous (SBS & APP), and Liquid Waterproofing Membranes.
What is Geo membranes?
Geo membranes are made from relatively thin continuous polymeric sheets, usually in EPDM, PVC, APP & Bituminous Polymers.
EPDM Membrane vs TPO (Thermoplastic Polyolefin) Membranes
TPO is a thermoplastic polymer with moderate flexibility. This table explains further:
| Feature | EPDM | TPO |
|---|---|---|
| Material | Synthetic rubber | Thermoplastic polymer |
| Flexibility | High, adapts to structural movements | Moderate, can crack under temperature fluctuations |
| Lifespan | 50+ years | 20-30 years |
| UV Resistance | Excellent | Good but can degrade over time |
| Installation | Simple, adhered or ballasted | Requires heat welding for seams |
| Cost | Moderate | Moderate to high |
EPDM Waterproofing Membrane vs. PVC (Polyvinyl Chloride) Membranes
EPDM membrane is an eco friendly material which PVC is not. However, PVC provides more durable but pricing is much higher than a standard EPDM waterproofing membrane price. More differences include:
| Feature | EPDM | PVC |
|---|---|---|
| Material | Synthetic rubber | Thermoplastic polymer |
| Flexibility | Very High | Moderate |
| Chemical Resistance | Excellent | Moderate, can degrade from chemical exposure |
| UV Resistance | Outstanding | Good but can discolor over time |
| Environmental Impact | Recyclable | Contains plasticizers, less eco-friendly |
| Cost | Moderate | High |
EPDM Membrane vs. Bituminous (SBS & APP) Membranes
Bituminous membranes may be budget friendly upfront, but they are not cost-saving. From installation charges to maintenance, the EPDM membrane is more viable in multiple ways:
| Feature | EPDM | Bituminous Membranes (SBS & APP) |
|---|---|---|
| Material | Synthetic rubber | Asphalt-based |
| Flexibility | High | Low, prone to cracking in extreme temperatures |
| Lifespan | Simple, fewer seams | Complex, requires torching or adhesives |
| Maintenance | Low | High, as bitumen can deteriorate over time |
| UV Resistance | Excellent | Moderate, requires protective coatings |
| Cost | Moderate | High |
EPDM Sheet Waterproofing vs. Liquid Waterproofing Membranes
Liquid waterproofing membranes are polymer based liquids sprayed on the roofing surface. Hence, it may be easier to apply liquid membranes in complex areas, but you may need to keep touching-up to maintain the efficiency of the liquid membrane.
| Feature | EPDM | Liquid Membranes |
|---|---|---|
| Material | Synthetic rubber | Polymer-based liquid |
| Application | Sheet installation | Sprayed or rolled on surface |
| Seamless Application | No, it requires seams | Yes, fully seamless |
| Durability | High | Moderate, prone to punctures |
| UV Resistance | Excellent | Varies based on formulation |
| Maintenance | Low | Moderate to high |
How to Choose the Right Roofing Membrane for your Project?
Your final selection depends on many factors:
- Climatic Conditions: The EPDM waterproofing system is more suitable for places with harsh climatic conditions, especially where there is high UV exposure.
- Structural Flexibility: If there are critical corners, narrow edges, and uneven surfaces on your roof, then the EPDM membrane’s flexibility will be advantageous.
- Budget Considerations: The cost of bituminous membranes is the lowest but for long-term cost-effectiveness, EPDM will be more suitable for you.
- Ease of Installation: Liquid membranes are the easiest to install but considering EPDM waterproofing membrane thickness, it is perfect for bigger areas.
Conclusion
EPDM membrane offers a balance of longevity, durability, flexibility and easy usage. Being eco friendly, it also supports the environment. However, your profitability entirely depends on the quality of EPDM waterproofing membrane you are buying.
