When to Use Phenolic Foam Insulation Pipe?

30 Sep.,2024

 

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Phenolic Foam with a foil facing is one of the most commonly used insulation products in the UK market today, so we thought it might be worth looking at the comparative benefits of using such products. In this article we will look at the following: Thermal Performance, Fire Performance, Moisture Resistance,Environmental Impact and last but not least... Price.

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Thermal Performance

When looking at phenolic foam insulation, thermal performance is probably the most obvious place to begin; why? Because phenolic foam is simply better than every other commonly available product, and by quite a distance. Typically phenolic insulation has a thermal conductivity of around 0.025W/m.K at +10ºC, (The initial value is usually more like 0.021W/m.K for a good quality foam but this will age over the first 90 days and then stabilise) compared to to around 0.032W/m.K for glass wool at the same temperature. Does this make it a better insulation? Yes and no, thermally speaking it is certainly the superior product, but we always advocate that you need to use the right insulation for the right application. Phenolic foam is suitable for a wide range of heating and cooling applications, and as it is such an efficient product (due to the very fine cell structure) you can usually use a thinner layer of insulation to achieve the same results. This also means the material has a smaller surface area, so if you are using finishing materials such as PIB sheeting or Aluminium Cladding then you do not need to use as much.

Fire Performance

Phenolic Foam has excellent fire performance characteristics. It is difficult to ignite, has either zero or very low flame spread and low smoke emission with a very low level of toxic gas emission. As phenolic foam is a thermoset material it will not run, melt or drip when it comes into contact with a fire source. For this reason it is capable of meeting or exceeding all international building regulation requirements. The toxic gases that are given off by phenolic foam in the event of a fire tend to be limited to either carbon dioxide and carbon monoxide with very low levels of other gases.

Phenolic foam usually achieve a Class 0 Fire Rating to BS476: Parts 6 & 7, and to the Euroclass Fire Rating should achieve Euroclass B-s1-d0.

Moisture Resistance

Phenolic foam typically has a low water vapour permeance, thus it is highly resistant to the passage of water vapour and it also has very low water absorption characteristics. The material is also "non wicking", this means that if the vapour barrier is punctured and water or moisture that gets in will be limited to the damaged area. This means that you have a measure of damage limitation; you will have to replaced the damaged section, but it will not compromise the system as a whole.

The excellent moisture resistance characteristics make phenolic foam particularly suitable for low temperature hot water, chilled and cold applications (on colder applications the use of a good quality mastic is advisable as foil tape alone does not fully protect the joins from the passage of moisture).

Environmental Impact

Good quality phenolic foam (such as Supaphen or 3DPHEN) are both CFC and HCFC free, though some cheaper materials are still manufactured with a HCFC blowing agent. Both products also have also have an Ozone Depletion Potential of Zero.

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To quote the EPFA, phenolic foam has "low environmental impact per unit of thermal performance compared with many other materials".

Price

At first glance, phenolic foam is amongst the most expensive materials in the industry, but that is missing they key benefit of the product.

As it is so efficient thermally speaking you can usually use a thickness below to achieve the same results as a mineral fibre product. eg You can often use 15mm Thickness Phenolic where you would have to use 20mm Thickness Mineral Fibre, which is very often the cheaper option. Typically phenolic has a temperature range of -180ºC to +120ºC, so it is not always true that you can simply substitute one for the other - which comes back to the issue of choosing the right insulation for the right application.

Another factor to consider, especially on larger installations, is whether or not you need to use any kind of facing materials on the insulation, such as PIB or Aluminium Cladding. As you can use thinner insulation, the surface area of the insulation will be less, therefore you can use less facing material which in turn saves you more money.

Everything You Need to Know About Phenolic Pipe Insulation

Everything You Need to Know About Phenolic Pipe Insulation

One of the finest examples of phenolic pipe insulation is Kingspan kooltherm insulation . The pipe insulation supplied is 1M long and is manufactured in a range of thicknesses and diameters to suit various applications. Kingspan kooltherm phenolic foam pipe lagging has been one best-selling insulation products here at Buy Insulation Online !

The phenolic pipe foam core is normally closed-cell, which means the foam cells are shut off from one other, limiting air and moisture infiltration. This feature contributes to the material's improved insulation performance and lowers the danger of corrosion on the surface of the pipe or equipment being insulated. Since phenolic pipe insulation is available in several diameters and thicknesses, it may be used in various applications

A firm foam core is sandwiched between two layers of facing material to form phenolic pipe lagging. Several materials, such as kraft paper or aluminium foil can make the face material.

As the name suggests, the phenolic pipe lagging is constructed of phenolic resin, a plastic created by combining phenol and formaldehyde. To create the insulating material, the phenolic resin is cured and foamed.

In this article, we will cover all you need to know about phenolic pipe insulation , including its composition, thermal qualities, installation technique, maintenance, fire resistance, comparison to other insulation materials, and environmental effect. At the end of this article, you will have a thorough grasp of phenolic pipe lagging

But, for those who are still debating about using Kingspan kooltherm phenolic pipe insulation or phenolic pipe lagging of other brands, we have put together a comprehensive guide that should help you make a decision.

Phenolic pipe insulation is known for its unmatched thermal resistance, superior performance and more. It has been a go-to pipe insulating product among laggers for some time now.

Advantages of phenolic pipe insulation

Some of the crucial advantages of Phenolic pipe include the following:

  • High thermal insulation properties: Since phenolic pipe insulation has low thermal conductivity, it resists heat flow well. This feature makes it a good candidate for use when energy efficiency is a concern.

  • Lightweight and simple to install: This can assist in minimising installation costs and increase overall project efficiency. Phenolic insulation is easy to cut and shape to fit around pipes and other equipment, making it a practical choice for installers.

  • Long life: Since phenolic pipe insulation has a long life. It may provide long-term insulating performance while reducing the need for regular replacement.

  • Fire resistance: Phenolic insulation gives excellent fire and smoke performance, as its made of a densely cross-linked structure, which makes it difficult to ignite. The outer surface of this Class O rated pipe insulation develops a thick carbonaceous layer that limits heat generation and retards further flame spread. 

Disadvantages of phenolic pipe insulation

Some of the drawbacks of Phenolic pipe insulation include the following:

  • Costlier: Phenolic pipe insulation can be more costly than other forms of insulation, such as fibreglass or mineral wool lagging

  • Installation requirements: Installation of phenolic pipe insulation necessitates using specific tools and equipment, which can raise installation costs and necessitate more trained workers.

  • Environmental impact: Because the phenolic resin is derived from petrochemicals, phenolic pipe insulation may have an environmental impact.

Thermal Properties of Phenolic Pipe Insulation

The thermal conductivity of phenolic pipe insulation is normally between 0.020 and 0.030 W/m*K. Because of its low thermal conductivity, phenolic pipe insulation effectively reduces heat transfer and conserves energy.

A material's heat capacity is the quantity of heat energy necessary to increase its temperature by a specific amount. The heat capacity of phenolic pipe insulation ranges between 1.4 and 1.7 kJ/kg*K. This implies that heating the insulating material consumes relatively little energy, which can increase energy efficiency.

Depending on the product and application, phenolic pipe insulation can normally tolerate temperatures ranging from -180°C to 150°C (-292°F to 302°F). Nevertheless, the maximum temperature that phenolic pipe insulation can take varies based on parameters such as insulation thickness, facing material utilised, and application.

Installation of Phenolic Pipe Insulation

What tools are needed during installation? 

The installation of phenolic pipe insulation necessitates the use of no specific tools and materials. You will need:

  • Phenolic pipe insulation: This is the main material in this case.

  • Protective gear: While working with phenolic pipe insulation, installers should use suitable protective equipment such as gloves, masks, and eye protection.
  • Adhesive Or Foil Tape: Foil tape of the appropriate size or pipe insulation adhesives can be used to install and secure phenolic insulation around the pipework.

Steps of Installation? 

Below are the steps you need to follow while installing Phenolic Pipe Insulation:

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  1. Before applying the insulation, ensure the installation area, especially the pipework that needs insulating is clean and dry.

  2. When working with phenolic pipe insulation, wear suitable safety equipment.

  3. Wrap the Kooltherm phenolic foam pipe section around the pipework, being the ends of the lagging together and seal with foil tape. 

  4. Ensure no gaps or voids exist between the pipe section and the pipe or equipment.

  5. Seal all insulating joints to ensure there are no holes through which heat can escape.

  6. Check the finished installation to confirm that it fulfils the standards and has no insulation gaps. Complete the installation by adding pipe identification labels of the appropriate type to help identify the pipework.

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Maintenance of Phenolic Pipe Insulation

The following are some maintenance procedures that can aid in the preservation of phenolic pipe insulation:

  • Maintenance and repair: Keep phenolic pipe insulation clean to avoid accumulating dirt, dust, or other impurities that might reduce efficiency. If there is any damage to the insulation, it should be addressed as soon as possible to prevent heat loss.

  • If you plan on using Kingspan kooltherm pipe insulation to insulate outdoor pipes, cover them with appropriate pipe insulation cladding materials 
  • Inspection and monitoring: Frequent inspections and monitoring of phenolic pipe lagging can aid in the early detection of possible issues. Inspecting for indicators of deterioration, such as cracks or holes in the insulation, and ensuring that the insulation is correctly sealed around joints and fittings are all tasks for inspectors.

  • Maintenance records: Maintaining precise records of the maintenance conducted on phenolic pipe insulation will ensure that it is properly maintained and that any possible problems are discovered and treated promptly.

Comparison of Phenolic Pipe Insulation with Other Insulation Materials

When comparing phenolic pipe insulation to other insulation materials, numerous considerations should be considered:

Phenolic pipe insulation provides outstanding fire safety. It is class O rated and has low smoke production. Compared to other insulation materials, such as foam pipe insulation, which can be combustible, phenolic insulation is a safer alternative for fire safety.

Compared to other types of insulation, phenolic pipe insulation has a much lower K-value compared to other pipe insulating options, which means it may give a high level of thermal performance

Phenolic Foam Pipe Insulation Manufacturers

Phenolic foam is a popular choice for pipe insulation in the UK and Europe due to its high performance and energy-saving properties. There are several manufacturers of phenolic foam pipe insulation in the region Like Kingspan, Supahphen etc. 

Kingspan offers a wide range of phenolic foam insulation products for various applications, including pipe insulation. Kingspan phenolic foam lagging comes in a range of thicknesses to fit different pipe sizes. It does not contain any CFC or HCFC making it an environmentally friendly option.

It is a high performance pipe insulation known for its excellent thermal insulation properties, fire resistance, and durability.

Frequently Asked Questions

1. What is phenolic insulation?

Phenolic insulation is a type of insulation made from phenolic foam. It is a highly effective and efficient insulating material that is commonly used in the construction industry for its excellent thermal performance.

2. Is phenolic a good insulator for pipes?

Yes, phenolic insulation is an excellent choice for insulating pipes. It has a high thermal resistance, which can help to keep pipes at the desired temperature while minimizing heat loss. Phenolic pipe insulation is also lightweight, easy to install, and provides excellent fire resistance.

3. Does phenolic insulation come in different sizes?

Yes, phenolic insulation is available in a wide range of sizes to fit pipes of different diameters. The most common sizes for phenolic pipe insulation are 15mm and 50mm, but other sizes are also available.

4. Is phenolic insulation moisture resistant? 

Yes, since phenolic insulation is a closed cell it usually does not allow the entry of moisture. Moreover, Kingspan pipe insulation is a foil backed pipe lagging, where the factory applied foil-facing, form an effective vapour barrier. 

However, it is important to state that Phenolic insulation is not waterproof. If it is affected by moisture for a long time, its insulating properties could be affected. 

5. What is the price of phenolic insulation?

The price of phenolic insulation can vary depending on factors such as the thickness, size, and quantity of insulation needed. It is best to contact an insulation supplier or manufacturer for pricing and ordering information.

Here at Buy Insulation Online, we stock phenolic pipe lagging and boards. We stock Kingspan pipe insulation supplied in a wide range of thicknesses to suit your application. 

6. Is phenolic insulation easy to install?

Yes, phenolic insulation is easy to install and can be cut to fit around pipes of different sizes and shapes. However, it is recommended to seek professional installation for the best results. For installing boards, you can refer to the manufacturer guidelines and videos on respective the product pages

7. What is the thermal performance of phenolic insulation?

Phenolic insulation has a high thermal resistance, which can help to minimise heat loss and reduce energy costs. It is one of the most effective types of insulation available for both residential and commercial applications.

8. Can phenolic insulation be used as part of a pipe insulation system?

Yes, phenolic insulation can be used as part of a pipe insulation system to help maintain the temperature of pipes and prevent heat loss. Moreover, it is Class O rated and complies with the required building regulation in the UK. It can also be used with other insulation materials for added performance.

9. What is the density of phenolic insulation?

Phenolic insulation has a relatively high density compared to other types of insulation, which can help to provide excellent thermal performance. The density can vary depending on the specific product and application but generally ranges from around 30-100 kg/m³.

 

Conclusion:

Ultimately, phenolic Pipe insulation is essential for mitigating heat loss and overheating issues. When installed and maintained properly, phenolic pipe insulation may offer excellent thermal insulation for many years, lowering energy expenditures and enhancing overall system efficiency.

Hopefully, this article has given you a better picture of how to install and maintain phenolic pipe insulation. If you are looking to purchase Kingspan Koolterm insulation online, there is no better place than Buy Insulation Online. We stock varying thicknesses and sizes, not commonly found online, which could be just what you are looking for. Also, if you need more information on Kingspan kooltherm phenolic foam pipe insulation, our experts are just a call away!

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