There are many types of commercial and industrial mechanical pipe insulation types to choose from. Each type offers advantages and disadvantages depending on the application. Determining owner project and performance requirements will simplify the product selection process while ensuring that the right pipe insulation is specified and installed to ensure long-term system performance.
Link to huamei
This post will focus on closed-cell pipe insulation options, and more specifically, a focus on flexible rubber versus foam pipe insulation: which is better? Both consist of a closed-cell structure which efficiently controls condensation on below-ambient (cold) piping systems.
Flexible elastomeric closed-cell foam pipe insulation, also known as rubber, is composed of synthetic rubber. The two main foam rubber formulations that are commercially available are nitrile butadiene rubber with PVC (NBR/PVC) and EPDM (Ethylene Propylene Diene Monomer). The industry reference standard is ASTM C 534, Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form. A comparison between NBR/PVC and EPDM is available in a later section of this post.
In addition to foam rubber pipe insulation, another alternative is known as foam plastic (also known as polyethylene, polyolefin, poly, or PE). Foam plastic pipe insulation is often installed on residential and light commercial piping systems. The industry reference standard is ASTM C , Standard Specification for Extruded Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form.
Rubber Versus Foam Pipe Insulation: Which is better?
Choosing between foam rubber and foam plastic depends on the application. Below are a few key performance characteristics to evaluate:
Thermal conductivity ' foam rubber typically offers a lower (favorable, more thermally-efficient) K-value than foam plastic.
Continuous service temperature ' foam plastic's upper continuous temperature threshold is 200°F [93']; NBR/PVC foam rubber is 220' [104']; EPDM foam rubber is 257' [125'].
Fire safety ' this criteria is important to pay attention to. Foam rubber usually passes ASTM E 84 or UL 723 25/50 flame spread/smoke-developed index up to 2' [50 mm] thick. However, foam plastic has been known to melt, drip, or delaminate during the same test procedure. In other words, foam plastic's fire performance is less predictable and in some cases does not pass at greater thicknesses such as 1-½' [38 mm] and 2' [50 mm].
Density ' both foam pipe insulations are considered flexible, however foam plastic is more rigid by comparison.
Cost ' foam plastic typically costs less than rubber, however the project application, performance characteristics, and owner project requirements may be more important than first cost.
A safe conclusion when comparing rubber versus foam plastic pipe insulation is that rubber is the better choice for commercial and industrial applications due to its lower thermal conductivity, higher continuous operating temperature, and more predictable fire behavior. Rubber is more likely to check all of the boxes when addressing the building owner's project requirements.
To drill this comparison down another level, what should you look for when comparing NBR/PVC and EPDM foam rubber insulation? Both meet ASTM C 534, are made from synthetic rubber compounds and consist of a closed-cell structure and smooth outer skin that serves as a vapor barrier. But what are the performance advantages of Aeroflex® EPDM versus NBR/PVC?
Chemical Polarity ' Aeroflex® EPDM is nonpolar (hydrophobic), which means that it does not induce or react to moisture. NBR/PVC is hygroscopic or attracted to moisture.
Thermal conductivity ' Aeroflex® EPDM k-values are the same across core product lines.
Water vapor permeability (WVP) ' Aeroflex® EPDM maintains low WVP across core product lines.
Corrosiveness ' Aeroflex® EPDM is non corrosive on metallic piping, including stainless steel.
Continuous operating temperature (upper limit) ' 257' [125'].
UV resistance ' Aeroflex® EPDM is more UV-resistant than NBR/PVC; although not UV-proof, EPDM will degrade at a slower rate than NBR/PVC.
Mold resistance ' Aeroflex® EPDM does not contain organic food sources such as binder and oils which can sustain microbes; the addition of EPA-registered antimicrobials are necessary.
PVC content ' for building owners seeking PVC-free building materials, Aeroflex® EPDM contains ultra-low PVC content (< 1% by weight).
Flexibility (cold weather) ' EPDM is known to stay more flexible than NBR/PVC during cold-weather installations.
To learn more about Aeroflex® EPDM, click here.
When insulating pipes, have you pondered whether rubber or foam is better? This question often sparks debates among experts. Each insulation material offers unique advantages and disadvantages.
Choosing the right pipe insulation type optimises energy efficiency. It ensures proper installation and manages insulation costs. Let's explore rubber and foam insulation to determine the best option.
When choosing pipe insulation, consider the project's specific requirements. Determine the desired performance outcomes. This simplifies product selection and ensures appropriate installation.
Popular options are rubber and foam plastic insulation. Rubber insulation is flexible, closed-cell foam made from synthetic rubber. Common formulations are NBR/PVC and EPDM.
Foam plastic insulation is often used on residential and light commercial piping systems. It's commonly referred to as polyethylene, polyolefin, poly, or PE.
Pipe insulation is essential for piping systems. It maintains the desired fluid temperature. Whether hot or cold pipes, insulation minimises heat transfer. It improves energy efficiency and prevents condensation issues.
By understanding pipe insulation basics, you can make informed decisions. You can select and install suitable insulation materials.
Insulating pipes offers numerous benefits for energy efficiency and longevity. For hot water pipes, insulation keeps heat in. Water remains at desired temperature from boiler to taps/radiators.
This improves comfort and reduces energy consumption and heating costs. For cold pipes, insulation keeps heat out. Pipes carrying cold water/refrigerant don't warm up.
This maintains cooling system efficiency and prevents condensation on pipes. Condensation can lead to corrosion and structural damage.
There are two main pipe insulation categories: closed-cell foam and fibreglass (lagging). Closed-cell foam includes flexible elastomeric foam and polyethylene foam.
Elastomeric foam (nitrile, EPDM) offers superior thermal conductivity, flexibility and durability. It suits a wide range of applications. Polyethylene foam is cost-effective for residential/light commercial uses.
Fibreglass insulation offers good thermal performance in various thicknesses/densities. It suits different temperature ranges and pipe sizes. However, it may lack moisture resistance of closed-cell foams.
When selecting insulation, consider thermal conductivity, temperature range, moisture resistance and fire performance. Evaluate application requirements and material properties for optimal insulation choice.
When selecting pipe insulation material, it's crucial to consider rubber and foam insulation's performance characteristics. By comparing them based on thermal conductivity, durability, moisture resistance, and mould resistance, you can make an informed decision.
Thermal conductivity measures an insulation material's ability to prevent heat transfer. A lower K-value indicates better thermal efficiency. Rubber insulation typically offers a lower, more thermally-efficient K-value than foam plastic insulation.
Rubber insulation, particularly elastomeric foam rubber, is generally more durable and has a longer lifespan. This increased durability can lead to reduced maintenance and replacement costs, making rubber insulation cost-effective long-term.
If you want to learn more, please visit our website rubber foam insulation.
Moisture and mould can compromise insulation's effectiveness and cause structural damage. Elastomeric foam rubber insulation, especially EPDM (Ethylene Propylene Diene Monomer), stands out for its excellent resistance to these issues.
In contrast, foam plastic insulation may be more susceptible to moisture and mould growth, potentially leading to reduced performance and increased maintenance requirements.
Insulation Performance Characteristics Rubber Insulation Foam Insulation Thermal Conductivity (K-value) Lower, more thermally-efficient Higher, less thermally-efficient Durability and Longevity More durable, longer lifespan Less durable, shorter lifespan Moisture Resistance Excellent, especially EPDM More susceptible to moisture Mould Resistance Excellent, especially EPDM More susceptible to mould growthBy evaluating these key insulation performance characteristics and comparing rubber and foam insulation options, you can select the appropriate material for your application, ensuring optimal thermal efficiency, durability, and resistance to moisture and mould.
Rubber pipe insulation stands out as the best insulation material for piping systems. It offers numerous advantages.
Elastomeric foam insulation made from nitrile rubber or EPDM provides superior performance over other insulation materials.
Rubber pipe insulation has exceptional thermal performance. Elastomeric foam insulation has lower thermal conductivity values compared to foam plastic insulation.
This means it provides better insulation and maintains the desired temperature of water inside pipes more effectively. Improved thermal performance translates to increased energy efficiency and potential cost savings on heating and cooling bills.
Elastomeric foam insulation can be easily cut to size and fitted around pipes, even in tight spaces or complex configurations. This flexibility allows for a snug fit, minimising gaps and ensuring optimal insulation performance.
The installation process is straightforward, as rubber insulation can be quickly applied to pipes without specialised tools or extensive training.
High-quality rubber insulation, such as Aeroflex® EPDM, offers several other advantages:
When selecting rubber pipe insulation, consider the specific requirements of your application, such as temperature range, environmental factors, and fire safety regulations. By choosing high-quality elastomeric foam insulation like nitrile rubber or EPDM, you can ensure optimal performance, durability, and ease of installation for your piping system.
Foam pipe insulation, especially polyethylene foam, offers several advantages. It's cost-effective compared to rubber insulation. Foam insulation has a lower initial cost, making it budget-friendly.
While rubber insulation provides better thermal performance and durability, foam pipe insulation is lightweight and easy to install. Its flexibility allows it to fit pipes snugly, minimising heat loss.
Moreover, polyethylene foam is moisture and mould-resistant. Being a closed-cell material, it doesn't absorb water easily, reducing moisture-related damage and mould growth.
For light commercial applications like restaurants or retail stores, foam insulation may be suitable. However, for demanding industrial settings, rubber insulation offers better performance and durability.
When choosing between foam and rubber insulation, consider factors like budget, thermal performance requirements, and environmental conditions. Consult insulation experts to make an informed decision balancing cost-effectiveness with long-term energy efficiency.
Selecting the most suitable insulation material requires considering various factors. Rubber and foam insulation differ in performance, durability and cost-effectiveness.
When choosing between them, key aspects must be considered. This ensures the best decision for your application.
The application and environment are crucial factors. Different materials suit specific conditions better.
Rubber insulation excels in commercial and industrial applications. It offers superior thermal conductivity and higher continuous operating temperatures.
Rubber insulation resists moisture and mould well. This makes it ideal for high humidity environments.
Foam plastic insulation suits residential and light commercial applications. Here, environmental factors are less demanding.
Foam plastic insulation has a lower initial cost. But rubber insulation may be more cost-effective long-term.
Rubber insulation's durability and performance reduce maintenance costs. Its moisture resistance and high temperature limit extend lifespan.
Long-term energy savings offset rubber insulation's higher upfront cost.
Compatibility with existing systems is critical. Chosen insulation must work seamlessly with current setup.
Incompatibility reduces performance and increases wear. Some materials unsuitable for certain pipes, chemicals or temperatures.
Consulting experts ensures compatibility. This prevents issues and optimises performance.
Factor Rubber Insulation Foam Plastic Insulation Thermal Conductivity Lower, more thermally efficient Higher, less thermally efficient Durability More durable, longer lifespan Less durable, shorter lifespan Moisture and Mould Resistance Excellent resistance, especially EPDM More susceptible to moisture and mould Initial Cost Higher initial cost Lower initial cost Long-Term Cost-Effectiveness More cost-effective over time Less cost-effective over timeEvaluating application, environment, budget and compatibility ensures informed insulation choice. This optimises performance, durability and long-term value.
Choosing the best pipe insulation material depends on your project needs. Both rubber and foam insulation have advantages and drawbacks.
Evaluate factors like application, environment, budget, and performance goals. This will help you select the ideal insulation material.
Consider these factors to determine if rubber or foam insulation is better:
Assessing these aspects narrows down your options for the best fit.
Seeking guidance from insulation experts is invaluable for an informed decision. They provide tailored recommendations based on your project's requirements.
Experts offer insights into factors like thermal conductivity, durability, fire performance, and cost-effectiveness. This helps select the optimal insulation material.
Consideration Rubber Insulation Foam Insulation Thermal Conductivity Superior, especially EPDM Good, but lower than rubber Durability and Lifespan Excellent, particularly in harsh environments Good, but may degrade faster Fire Performance Better, with predictable behaviour Good, but less consistent Cost-Effectiveness Higher initial cost, potentially economical long-term Lower initial cost, may require replacementWeighing these factors and consulting experts ensures you make an informed decision on whether rubber or foam insulation is better for optimal performance, longevity, and value.
Ensure your pipe insulation performs well by following proper installation methods. Whether using rubber or foam, success lies in thorough surface prep and meticulous sealing of joints. Installing correctly maximises effectiveness, improving energy efficiency and reducing heating costs.
Before installing pipe insulation, prepare surfaces properly. Remove any dirt, grease or moisture that could prevent secure adhesion. Clean pipes thoroughly with a suitable degreaser or cleaning agent. Allow to dry fully before installation. Ensuring a clean, dry surface significantly improves insulation's ability to bond effectively, resulting in better overall performance.
Once insulation is in place, seal all joints and seams to create an airtight, moisture-resistant barrier. Gaps or openings allow heat escape or moisture entry, compromising effectiveness. This can lead to condensation, mould growth, and structural damage. Use adhesives, tapes or sealants designed for your insulation material to prevent these issues.
Are you interested in learning more about class 1 insulation rubber foam? Contact us today to secure an expert consultation!