EPDM vs. Felt Roofing: Which Is Better for Flat Roofs? This question is central to many flat roof projects, demanding careful consideration of material properties, installation methods, longevity, cost, and environmental impact. Choosing the right roofing material significantly impacts a building’s lifespan, maintenance needs, and overall cost-effectiveness. This comprehensive comparison will delve into the key differences between EPDM and felt roofing, enabling informed decision-making for your specific needs.
We will explore the distinct characteristics of each material, from their chemical composition and manufacturing processes to their installation techniques and long-term performance. A detailed cost analysis, including initial investment and ongoing maintenance, will also be presented, alongside an assessment of their environmental impact and suitability for various building types. By the end, you’ll have a clear understanding of which roofing system best suits your project.
Material Properties
Understanding the material properties of EPDM and felt roofing is crucial for determining their suitability for a particular application. Both materials offer distinct advantages and disadvantages, impacting their lifespan, maintenance requirements, and overall cost-effectiveness. This section will compare and contrast these key properties to facilitate informed decision-making.
EPDM and Felt Roofing Material Comparison
The following table summarizes the key differences in physical properties between EPDM and felt roofing materials. Note that values can vary based on specific product formulations and manufacturing processes.
| Material | Lifespan (Years) | UV Resistance | Flexibility | Cost (Relative) |
|---|---|---|---|---|
| EPDM | 30-50+ | Excellent; resists cracking and degradation | High; can accommodate building movement | Higher |
| Felt (Asphalt-saturated) | 10-20 | Moderate; susceptible to cracking and UV degradation | Moderate; less flexible than EPDM | Lower |
Manufacturing Processes
EPDM roofing membranes are manufactured through a process involving the vulcanization of synthetic rubber. This involves mixing EPDM granules with various additives and then curing them under high temperature and pressure to form a durable sheet. The sheets are then typically rolled and shipped to the installation site. Different manufacturers may employ variations in the formulation and curing process to achieve specific performance characteristics.
Felt roofing, also known as asphalt-saturated felt, is produced by saturating organic or fiberglass mats with asphalt. This process involves dipping the mats into heated asphalt, which penetrates the fibers and binds them together. The resulting material is then coated with additional asphalt and mineral granules for protection against UV radiation and weathering. Different grades of felt exist, varying in thickness and the type of mat used.
Chemical Composition and Durability
EPDM roofing membranes are primarily composed of ethylene propylene diene monomer (EPDM), a synthetic rubber known for its excellent weather resistance and durability. The chemical composition contributes to its resistance to UV degradation, ozone, and many chemicals. Additives, such as antioxidants and carbon black, are incorporated to enhance these properties and extend the lifespan of the membrane. The cross-linking during vulcanization creates a strong, durable network, resulting in a long-lasting roof.
Felt roofing’s chemical composition is primarily asphalt, a petroleum-based material, combined with organic or fiberglass fibers. The asphalt provides waterproofing, but it is susceptible to UV degradation, oxidation, and cracking over time. The addition of mineral granules improves UV resistance, but it still has a shorter lifespan compared to EPDM. The organic fibers in felt can also degrade over time, reducing the overall durability of the roofing system. The chemical composition of the asphalt also makes it susceptible to damage from certain chemicals.
Installation Methods and Techniques
The installation of both EPDM and felt roofing systems requires careful planning and execution to ensure a long-lasting, watertight roof. While both are suitable for flat roofs, their installation processes differ significantly in terms of materials, techniques, and required expertise. Understanding these differences is crucial for selecting the appropriate roofing system and ensuring a successful installation.
EPDM and felt roofing installations involve distinct procedures, tool requirements, and skill levels. EPDM typically requires more specialized tools and often professional installation, while felt roofing, particularly for smaller projects, can be a more DIY-friendly option.
EPDM Roofing Installation
EPDM rubber roofing is known for its durability and longevity. Its installation generally involves several key steps, requiring specialized tools and often professional expertise due to the need for precise measurements and seaming techniques.
- Substrate Preparation: The existing roof deck must be clean, dry, and free of debris. Any damaged areas should be repaired.
- Primer Application: A specialized primer is applied to the roof deck to ensure proper adhesion of the EPDM membrane.
- Membrane Placement: The EPDM membrane is carefully unrolled and positioned over the roof deck, ensuring proper overlap at seams.
- Seaming: Seams are created using adhesive tape or a specialized adhesive, ensuring a watertight seal. This often involves specific techniques to avoid bubbles or wrinkles.
- Fastening: The membrane is secured to the roof deck using adhesive, fasteners, or a combination of both, depending on the specific system.
- Flashing Installation: Flashing is installed around chimneys, vents, and other penetrations to prevent water leakage.
- Final Inspection: A thorough inspection is performed to ensure the entire roofing system is watertight and meets specifications.
Felt Roofing Installation
Felt roofing, also known as asphalt roofing, is a more traditional and often less expensive option. Installation is generally simpler than EPDM, making it suitable for DIY projects on smaller structures. However, it requires careful attention to detail to ensure a durable and leak-proof roof.
- Substrate Preparation: Similar to EPDM, the roof deck must be clean, dry, and free of debris. Any damaged areas should be repaired.
- Underlayment Installation (optional): An underlayment can be added for extra protection and waterproofing.
- Felt Application: Felt sheets are laid overlapping each other, typically starting from the lowest point of the roof. Overlapping should be consistent and sufficient to prevent water penetration.
- Fastening: Felt sheets are fastened using roofing nails or staples, ensuring they are securely attached to the roof deck.
- Seaming: Overlapping seams are sealed with roofing cement or sealant to create a watertight barrier.
- Flashing Installation: Flashing is installed around chimneys, vents, and other penetrations to prevent water leakage.
- Top Coating (optional): A top coating can be applied to enhance the durability and weather resistance of the felt roofing.
Tools and Equipment Comparison
The tools and equipment required for EPDM and felt roofing installations differ significantly. EPDM installation often requires specialized tools for seaming and fastening, while felt roofing necessitates more basic tools readily available to most DIY enthusiasts.
| Tool/Equipment | EPDM Roofing | Felt Roofing |
|---|---|---|
| Utility Knife | Yes | Yes |
| Measuring Tape | Yes | Yes |
| EPDM Adhesive/Tape | Yes | No |
| Roofing Cement/Sealant | No | Yes |
| Specialized Roller | Yes | No |
| Staple Gun/Nail Gun | Sometimes | Yes |
DIY Felt Roofing Installation Guide for a Small Shed
This guide outlines the steps involved in installing felt roofing on a small shed. Remember to always prioritize safety and follow manufacturer instructions for all materials used.
- Prepare the Shed Roof: Clean the roof deck thoroughly, removing any debris, loose materials, or existing roofing. Repair any damaged areas of the wood.
- Apply Underlayment (Optional): For added protection, consider using a roofing underlayment. This will provide an extra layer of waterproofing.
- Lay the First Sheet of Felt: Begin at the lowest point of the roof and lay the first sheet of felt, ensuring it overlaps the edge of the shed by several inches.
- Secure the Felt: Use roofing nails or staples to securely attach the felt to the roof deck. Space fasteners appropriately to prevent damage to the felt.
- Continue Laying Felt: Overlap each subsequent sheet of felt, ensuring adequate overlap (usually 2-4 inches) to prevent water penetration. Maintain consistent overlap throughout the installation.
- Seal the Seams: Use roofing cement or sealant to seal all overlapping seams, ensuring a watertight seal. Apply sealant generously and evenly.
- Install Flashing: Install flashing around any chimneys, vents, or other penetrations in the roof to prevent water leakage.
- Final Inspection: Inspect the entire roof for any gaps, loose pieces of felt, or areas requiring additional sealant.
Longevity and Maintenance
Choosing between EPDM and felt roofing involves considering not only initial costs and installation but also the long-term implications of lifespan and maintenance. Both materials offer a degree of weather protection, but their durability and maintenance requirements differ significantly. Understanding these differences is crucial for making an informed decision based on your budget and long-term commitment.
EPDM and felt roofing exhibit varying lifespans dependent on several factors, primarily climate conditions and the quality of installation. Proper maintenance practices also play a crucial role in extending the life of either roofing system.
Lifespan Comparison of EPDM and Felt Roofing
EPDM rubber roofing systems, known for their durability and resilience, generally boast a significantly longer lifespan than felt roofing. Under ideal conditions, a well-installed EPDM roof can last for 30 to 50 years, even exceeding this in some cases. Felt roofing, while more economical initially, typically lasts between 10 and 20 years, with its lifespan significantly impacted by harsh weather conditions like intense sun exposure, freeze-thaw cycles, and heavy rainfall. For instance, a felt roof in a consistently sunny and dry climate might last closer to the upper end of this range, while one subjected to frequent freeze-thaw cycles in a northern climate might require replacement sooner. EPDM’s superior resistance to UV degradation, temperature fluctuations, and ponding water contributes to its extended lifespan in diverse climates.
Maintenance Recommendations for EPDM and Felt Roofing
Regular maintenance is essential for maximizing the lifespan of both EPDM and felt roofing systems. EPDM roofs, due to their inherent durability, require less frequent maintenance. However, periodic inspections for punctures, tears, or blistering are recommended. Cleaning involves removing debris and algae with a soft brush and mild detergent. Minor repairs, such as patching small punctures, can often be performed by homeowners using specialized EPDM repair kits.
Felt roofing, being more susceptible to damage, demands more diligent maintenance. Annual inspections are vital to detect signs of wear, such as cracks, blisters, or loose seams. Cleaning should involve gently removing debris and moss to prevent water damage. Repairing damaged areas of felt roofing often requires professional intervention, as improper repairs can compromise the roof’s integrity.
Maintenance Schedule for EPDM and Felt Roofing
The following table outlines a suggested maintenance schedule for both roofing types:
| Task | EPDM Roofing (Frequency) | Felt Roofing (Frequency) |
|---|---|---|
| Visual Inspection for Damage | Annually | Semi-annually |
| Cleaning (Debris Removal) | Annually | Semi-annually |
| Minor Repairs (Patching) | As needed | As needed (professional assistance often required) |
| Full Roof Inspection (Professional) | Every 5-7 years | Every 3-5 years |
Cost Analysis and ROI
Choosing between EPDM and felt roofing involves careful consideration of both upfront and long-term costs. While felt roofing may initially appear cheaper, the total cost of ownership over the lifespan of the roof needs to be assessed to determine the true value proposition of each option. This section analyzes the cost implications of each roofing system, including material costs, installation, maintenance, and ultimately, return on investment.
Initial Material and Installation Costs
The initial cost of a roofing system encompasses the price of materials and the labor required for installation. EPDM roofing generally presents a higher upfront cost compared to felt roofing. This is primarily due to the higher material cost of EPDM rubber membranes. However, the installation process for EPDM can sometimes be faster and less labor-intensive, potentially offsetting some of the material cost difference. Felt roofing, while less expensive in terms of materials, often requires more intricate installation, potentially increasing labor costs depending on the complexity of the roof.
| Roofing Type | Material Cost per Square Foot (USD) | Installation Cost per Square Foot (USD) | Total Cost per Square Foot (USD) |
|---|---|---|---|
| EPDM | $2.50 – $4.00 | $3.00 – $5.00 | $5.50 – $9.00 |
| Felt | $1.00 – $2.00 | $4.00 – $6.00 | $5.00 – $8.00 |
*Note: These cost ranges are estimates and can vary significantly based on geographic location, contractor, roof complexity, and material quality.*
Long-Term Cost Implications
The long-term cost of a roofing system encompasses maintenance, repairs, and eventual replacement. EPDM roofing, known for its durability and longevity, generally requires less maintenance and fewer repairs than felt roofing. Felt roofing is more susceptible to damage from UV radiation, punctures, and moisture penetration, leading to more frequent repairs and a shorter lifespan. These repairs can add up significantly over time, potentially negating the initial cost savings of felt roofing.
Return on Investment (ROI)
Calculating the ROI for each roofing system requires considering the initial cost, lifespan, and ongoing maintenance expenses. EPDM roofing, with its longer lifespan (typically 30-50 years compared to 10-20 years for felt), often yields a higher ROI despite the higher upfront investment. The reduced maintenance and repair costs over its extended lifespan contribute significantly to its overall cost-effectiveness. For example, a homeowner might invest more initially in EPDM, but avoid the significant repair and replacement costs associated with a felt roof over the same period. A felt roof might require replacement twice during the lifespan of a single EPDM roof, thus resulting in higher total costs. A detailed cost-benefit analysis, factoring in the specific circumstances and projected lifespan for each roofing material, is crucial for determining the best option for any given project.
Sustainability and Environmental Impact
Choosing between EPDM and felt roofing involves considering not only performance and cost but also the environmental implications throughout the material’s lifecycle. Both options present a range of sustainability factors that need careful evaluation to make an informed decision aligned with environmental responsibility.
EPDM and felt roofing differ significantly in their environmental impact, stemming from raw material sourcing, manufacturing processes, installation techniques, and end-of-life management. Understanding these differences is crucial for making responsible choices in roofing projects.
Manufacturing Processes and Associated Emissions
The manufacturing of EPDM roofing membranes involves the polymerization of ethylene and propylene monomers, a process that requires significant energy input and can generate greenhouse gas emissions. Felt roofing, conversely, relies on recycled paper fibers and asphalt, a petroleum byproduct. The asphalt production process contributes to air and water pollution, and the energy required for manufacturing felt roofing is also considerable. While both processes generate emissions, the specific type and quantity differ, making a direct comparison complex and requiring analysis of Life Cycle Assessment (LCA) data for specific product formulations. Generally, EPDM’s manufacturing process is often considered to have a lower carbon footprint than felt roofing, due to the increasing use of recycled materials in EPDM production and improvements in manufacturing efficiency.
Recyclability and End-of-Life Management
EPDM roofing membranes possess a higher degree of recyclability compared to felt roofing. Several recycling programs exist for EPDM, allowing for the material to be repurposed in other applications or used as a secondary raw material in the production of new EPDM products. Felt roofing, however, is typically disposed of in landfills, contributing to waste accumulation and environmental burden. While some components of felt roofing can be recycled, the process is less efficient and widespread than for EPDM. The lack of established and widely implemented recycling infrastructure for felt roofing significantly impacts its overall sustainability profile.
Potential Environmental Benefits and Drawbacks
| Feature | EPDM | Felt Roofing |
|---|---|---|
| Manufacturing Emissions | Lower carbon footprint than traditional felt roofing, but still significant energy consumption. | Higher carbon footprint due to asphalt production and energy-intensive manufacturing. |
| Recyclability | Higher recyclability rate; established recycling programs exist in some regions. | Lower recyclability rate; often disposed of in landfills. |
| Durability and Longevity | Longer lifespan reduces the frequency of replacement, minimizing environmental impact over time. | Shorter lifespan requires more frequent replacements, increasing environmental impact. |
| Installation | Relatively clean installation process with less waste generation. | Installation can involve more waste and potential for air and water pollution from asphalt. |
| Energy Efficiency | High reflectivity can reduce building energy consumption, decreasing environmental impact. | Lower reflectivity compared to EPDM, leading to higher energy consumption in buildings. |
The environmental impact of both roofing systems depends heavily on factors such as the specific manufacturing processes used, transportation distances, installation practices, and end-of-life management strategies. Life cycle assessments (LCAs) are valuable tools to comprehensively evaluate the environmental impacts of different roofing materials.
Suitability for Different Roof Types
EPDM and felt roofing, while both suitable for flat roofs, exhibit varying degrees of suitability depending on the specific design, size, and application of the roof. Factors such as roof slope, expected lifespan, and the building’s purpose influence the optimal choice between these two roofing materials. This section will explore the suitability of each material for different flat roof types and applications.
EPDM and felt roofing systems each present advantages and disadvantages for various flat roof applications. The selection process should carefully consider the long-term performance, maintenance requirements, and overall cost-effectiveness in relation to the specific building and its intended use.
EPDM Roofing Suitability for Different Roof Types
EPDM rubber roofing is known for its flexibility and durability, making it suitable for a wide range of flat roof applications. Its seamless nature minimizes the risk of leaks, a significant advantage in larger or more complex roof designs.
EPDM’s excellent resistance to punctures and tears makes it ideal for areas with potential for foot traffic or accidental damage, such as rooftop gardens or access points. Its high tensile strength allows it to withstand significant temperature fluctuations and expansion/contraction, particularly beneficial in climates with extreme temperature variations. The material is also relatively lightweight, simplifying installation and reducing the load on the building structure.
Examples of building types where EPDM is particularly appropriate include commercial buildings with large flat roofs, such as warehouses or industrial facilities. Its durability and longevity make it a cost-effective solution for these structures. It is also suitable for residential buildings, particularly those with complex roof designs or areas prone to extreme weather conditions.
EPDM’s limitations primarily involve its potential susceptibility to UV degradation over time, necessitating regular inspection and maintenance. While it can be installed on roofs with minimal slope, significant slopes can present challenges to achieving a completely watertight seal. Very large roofs may require multiple seams, increasing the potential for leakage.
Felt Roofing Suitability for Different Roof Types
Felt roofing, while more economical than EPDM, presents limitations in terms of longevity and durability. Its suitability depends largely on the size and complexity of the roof.
Felt roofing is often preferred for smaller, simpler flat roofs where the cost is a primary concern. Its relatively low cost and ease of installation make it a popular choice for residential applications, particularly smaller single-family homes. However, its shorter lifespan compared to EPDM necessitates more frequent repairs and replacements, ultimately increasing the long-term cost.
Felt roofing’s susceptibility to damage from punctures, tears, and UV degradation limits its suitability for roofs with high foot traffic or exposure to harsh weather conditions. The multiple layers required for adequate waterproofing can also add to the overall weight and installation complexity, especially on larger roofs. Furthermore, felt roofing is less adaptable to complex roof designs compared to EPDM’s flexibility.
Limitations Based on Roof Slope and Size
Both EPDM and felt roofing are primarily designed for flat roofs. However, they have limitations regarding the acceptable roof slope and overall size.
EPDM can handle a slightly steeper slope than felt roofing due to its greater flexibility and ability to form a watertight seal even on minor inclines. However, excessively steep slopes can still compromise its performance and lead to pooling of water. While EPDM can be used on larger roofs, the number of seams increases with size, potentially increasing the risk of leaks.
Felt roofing is generally best suited for very low-sloped or completely flat roofs. Even minor slopes can lead to slippage and premature failure of the roofing system. The limitations on slope and size for felt roofing are more restrictive than for EPDM, limiting its applicability to smaller, simpler flat roof structures. Larger felt roofs require more seams, increasing the risk of water penetration and shortening the lifespan.
Repair and Replacement
Repairing and replacing flat roofing materials like EPDM and felt are crucial aspects of maintaining a building’s structural integrity and preventing water damage. The methods and costs associated with these processes differ significantly based on the roofing material used and the extent of the damage. Understanding these differences is vital for making informed decisions regarding maintenance and repairs.
EPDM Repair Processes
EPDM rubber roofing is known for its durability and relatively easy repair. Minor punctures or tears can often be repaired using a patching kit containing adhesive and a piece of EPDM rubber matching the existing roof’s color. Larger damaged areas might require more extensive repairs involving the removal of the damaged section and the installation of a new patch, often using specialized EPDM tape or liquid sealant. Proper surface preparation, including cleaning and drying, is crucial for a successful repair to ensure adhesion.
Felt Roofing Repair Processes
Felt roofing, being more susceptible to damage from weathering and UV exposure, typically requires more frequent repairs. Small holes or cracks can sometimes be repaired with roofing cement or specialized patching materials. However, larger areas of damage often necessitate more involved repairs, which might involve cutting out the damaged section and applying a new layer of felt, overlapping it with the existing roofing material and securing it with roofing nails and cement. This process might require more skill and experience than repairing EPDM.
EPDM Replacement Methods
Replacing damaged sections of an EPDM roof usually involves cutting out the affected area, ensuring a clean, square edge. A new piece of EPDM rubber, sized to fit the opening, is then adhered using EPDM adhesive. The seams are sealed carefully to prevent leaks. For larger replacements, or for a complete roof replacement, the entire EPDM membrane may be removed and a new one installed.
Felt Roofing Replacement Methods
Replacing sections of felt roofing is a more labor-intensive process. The damaged section is carefully removed, exposing the underlying layers. A new piece of felt is then laid over the area, ensuring sufficient overlap with the existing felt to create a watertight seal. The new felt is secured using roofing nails and cement, and the seams are carefully sealed to prevent leaks. Larger replacements or a full roof replacement usually involve removing the entire existing felt roofing system before installing a new one.
Factors Influencing Repair and Replacement Costs
Several factors influence the cost of repairing or replacing EPDM and felt roofing. These include the size of the damaged area, the accessibility of the roof, the labor costs in the specific region, the material costs (which can fluctuate depending on market conditions and material availability), and the need for specialized equipment or skilled labor. For example, a small puncture in EPDM might cost a few hundred dollars to repair, while a complete roof replacement could cost tens of thousands. Similarly, a small tear in felt roofing might be relatively inexpensive to fix, but extensive damage requiring a full replacement could be very costly, particularly if underlying structural repairs are needed.
Warranty and Guarantees
Choosing between EPDM and felt roofing involves considering not only the material properties and installation but also the warranties offered by manufacturers. These warranties provide crucial protection against defects and failures, offering peace of mind and financial security. Understanding the specifics of each warranty is essential for making an informed decision.
EPDM and felt roofing systems typically come with manufacturer warranties, although the specific terms and conditions can vary significantly depending on the manufacturer, the product line, and the installer. It’s crucial to carefully review the warranty document before making a purchase to understand the extent of coverage and any limitations.
EPDM Roofing Warranty Information
EPDM roofing warranties commonly range from 10 to 30 years, with some manufacturers offering even longer periods for specific products or installations. These warranties typically cover defects in materials and workmanship, meaning that the manufacturer will repair or replace any defective components. However, coverage often excludes damage caused by external factors such as extreme weather events, improper installation, or vandalism.
The warranty claim process usually involves contacting the manufacturer directly, providing documentation of the defect (e.g., photographs, installation records), and following their specified procedures. Manufacturers may require an inspection by a qualified representative before approving a claim. The warranty may be voided if the roofing system was not installed according to the manufacturer’s instructions.
Felt Roofing Warranty Information
Felt roofing warranties are generally shorter than those for EPDM, typically ranging from 10 to 20 years. Similar to EPDM warranties, these cover defects in materials and workmanship, but may exclude damage caused by external factors such as hail, high winds, or improper maintenance. The specific coverage details are usually outlined in the warranty document. Some felt roofing systems may offer additional warranties for specific components, such as underlayment.
Filing a warranty claim for felt roofing typically involves contacting the manufacturer or the roofing contractor (depending on the warranty terms) and providing evidence of the defect. The manufacturer or contractor may then conduct an inspection to assess the claim’s validity. Again, adherence to the installation instructions is crucial for maintaining warranty coverage.
Comparison of Warranty Conditions and Limitations
| Feature | EPDM Warranty | Felt Roofing Warranty |
|---|---|---|
| Typical Warranty Period | 10-30 years | 10-20 years |
| Coverage | Generally covers defects in materials and workmanship. | Generally covers defects in materials and workmanship. |
| Exclusions | Usually excludes damage from extreme weather, improper installation, or vandalism. | Usually excludes damage from extreme weather, improper installation, or other external factors. |
| Claim Process | Contact manufacturer, provide documentation, potential inspection required. | Contact manufacturer or contractor, provide documentation, potential inspection required. |
It is important to note that these are general examples and the specific terms of a warranty will vary depending on the manufacturer and the specific product. Always read the warranty document carefully before making a purchasing decision.
Case Studies and Examples
Real-world applications of EPDM and felt roofing offer valuable insights into their performance under diverse conditions. Examining specific case studies reveals the strengths and weaknesses of each material, illustrating how various factors influence material selection and long-term success. This section presents several examples, highlighting the interplay between climate, budget, and building design in the choice of roofing material.
EPDM Roofing on a Commercial Building in a Coastal Climate
A large retail complex in a coastal region of Florida opted for an EPDM roofing system. The building’s designers chose EPDM due to its excellent resistance to UV degradation and its ability to withstand the harsh effects of saltwater exposure. The seamless nature of the EPDM membrane minimized potential leak points, a crucial consideration given the high rainfall and humidity. After ten years, the EPDM roof shows minimal signs of deterioration, demonstrating its suitability for this challenging environment. The initial cost was higher than felt, but the long lifespan and reduced maintenance needs resulted in a favorable long-term cost-benefit ratio. The initial higher investment was justified by the anticipated longevity and lower maintenance costs over the building’s lifetime.
Felt Roofing on a Residential Building in a Temperate Climate
A residential home in a region with moderate rainfall and temperature variations utilized a traditional felt roofing system. The homeowner chose felt due to its lower initial cost compared to EPDM. The relatively simple installation process also contributed to the decision. However, after five years, the felt roof began to show signs of wear, requiring repairs and eventually a partial replacement. The shorter lifespan of the felt roofing system, compared to the projected lifespan of the building, led to unforeseen maintenance expenses. The temperate climate, while not excessively harsh, still contributed to the degradation of the felt over time.
EPDM Roofing on a Municipal Building with a Tight Budget
A municipal building with a limited budget chose EPDM roofing. While the initial cost was still relatively high, the long lifespan and minimal maintenance requirements of EPDM offered a cost-effective solution over the long term. The city’s engineering department projected that the reduced maintenance costs would offset the higher initial investment within a reasonable timeframe. The decision to prioritize longevity and reduce future expenses proved to be financially sound for the municipality. The simple design of the roof facilitated a straightforward and efficient installation, further contributing to cost savings.
Felt Roofing Failure in an Area with Extreme Temperature Fluctuations
A warehouse in a region experiencing extreme temperature swings (high summer heat and freezing winters) used a felt roofing system. The significant temperature variations caused the felt to expand and contract repeatedly, leading to cracking and premature failure. The initial cost savings were quickly negated by the need for frequent repairs and eventual complete roof replacement after only three years. This case highlights the importance of selecting a roofing material that is appropriate for the specific climatic conditions. The decision to opt for a lower-cost solution without considering the climate’s impact proved to be a costly mistake.
Concluding Remarks
Ultimately, the “better” roofing material – EPDM or felt – depends on your specific project requirements and priorities. While EPDM often boasts superior longevity and durability, resulting in a potentially higher ROI over time, felt offers a more budget-friendly initial investment. Careful consideration of factors like climate, budget, and the building’s intended use is crucial. This detailed comparison provides the necessary information to make an informed choice, ensuring a long-lasting and cost-effective flat roof solution.