150mm Kingspan TR27 insulation 1.2m x 1.2m. 2 Boards Per Pack

When it comes to insulating your home, choosing the right material is crucial for achieving optimal thermal performance, comfort, and energy efficiency. Two popular options often considered are TR27 insulation and mineral insulation. Both offer distinct advantages and are suitable for various applications, but understanding their key differences can help you make an informed decision for your specific needs.

In this comprehensive guide, we’ll delve into the details of TR27 insulation and mineral wool insulation, comparing their thermal performance, acoustic properties, fire resistance, moisture resistance, sustainability, cost, and installation. By the end, you’ll have a clear understanding of which type of insulation is best suited for your project.

Understanding TR27 Insulation

TR27 insulation is a type of rigid thermoset phenolic foam insulation board. It is manufactured through a process where a phenolic resin is mixed with a blowing agent and an acid catalyst. This mixture is then poured into a mould and heated, causing it to expand and form a rigid foam with a closed-cell structure. The closed-cell structure of TR27 insulation contributes to its high thermal performance and moisture resistance.

Key Features and Benefits of TR27 Insulation:

  • High Thermal Performance: TR27 insulation boasts a low thermal conductivity, typically around 0.022 W/mK. This means it effectively resists heat transfer, keeping your home warmer in the winter and cooler in the summer.
  • Moisture Resistance: The closed-cell structure of TR27 insulation makes it highly resistant to moisture absorption. This helps to prevent dampness, condensation, and mould growth, contributing to a healthier indoor environment.
  • Lightweight and Easy to Handle: TR27 insulation boards are lightweight and easy to cut and install, making them suitable for both DIY enthusiasts and professional installers.
  • Fire Resistance: TR27 insulation has good fire performance characteristics, achieving a Class 1 fire rating.
  • Environmentally Friendly: TR27 insulation is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).  

Common Applications of TR27 Insulation:

  • Pitched Roofs: TR27 insulation boards are commonly used to insulate pitched roofs, installed between and over rafters.
  • Walls: TR27 can be used to insulate both internal and external walls, improving thermal performance and reducing heat loss.
  • Floors: TR27 insulation boards can be used for insulating floors, both above and below the screed.

Understanding Mineral Insulation

Mineral wool insulation is a broad term that encompasses two main types: rockwool and glass wool. Both are made from natural minerals and offer excellent thermal, acoustic, and fire-resistant properties.

Rockwool Insulation:

Rockwool is manufactured from volcanic rock that is melted and spun into fibres. These fibres are then bound together with a resin to create insulation batts, rolls, or slabs.

Glass Wool Insulation:

Glass wool is made from recycled glass that is melted and spun into fibres. These fibres are also bound together with a resin to create insulation products.

Key Features and Benefits of Mineral Wool Insulation:

  • Excellent Thermal Performance: Mineral wool offers good thermal insulation properties, with thermal conductivity typically ranging from 0.032 to 0.044 W/mK.
  • Superior Acoustic Performance: The fibrous nature of mineral wool makes it highly effective at absorbing sound waves, reducing noise transfer and improving sound insulation.
  • High Fire Resistance: Mineral wool is non-combustible and achieves the highest Euroclass A1 fire rating.
  • Moisture Resistance: While mineral wool can absorb some moisture, it is treated to be water repellent, preventing it from becoming saturated and losing its insulation properties.
  • Sustainable and Environmentally Friendly: Mineral wool is made from natural and recycled materials, making it a sustainable choice for insulation.

Common Applications of Mineral Wool Insulation:

  • Walls: Mineral wool is widely used to insulate walls, both in new builds and renovations.
  • Roofs: It is also commonly used in lofts and pitched roofs to reduce heat loss.
  • Floors: Mineral wool can be used to insulate floors, both between joists and underfloor heating systems.

Comparing Thermal Performance

Both TR27 insulation and mineral wool insulation offer good thermal performance, but TR27 generally has a slight edge due to its lower thermal conductivity. This means that TR27 insulation can achieve the same level of thermal resistance with a thinner profile compared to mineral wool.

However, the actual thermal performance of both materials will depend on factors such as thickness, density, and installation quality. It’s important to choose the appropriate thickness and ensure proper installation to maximise the thermal benefits of either insulation type.

Comparing Acoustic Performance

When it comes to acoustic performance, mineral wool insulation is the clear winner. Its fibrous structure is highly effective at absorbing sound waves, making it an excellent choice for reducing noise transfer between rooms and from outside.

While TR27 insulation can contribute to some sound absorption, its primary function is thermal insulation. If noise reduction is a priority for your project, mineral wool is the preferred option.

Comparing Fire Resistance

Both TR27 insulation and mineral wool insulation offer good fire resistance. TR27 typically achieves a Class 1 fire rating, while mineral wool achieves the highest Euroclass A1 fire rating, meaning it is non-combustible.

The choice between the two will depend on the specific fire safety requirements of your project and any relevant building regulations.

Comparing Moisture Resistance

TR27 insulation generally has better moisture resistance compared to mineral wool. Its closed-cell structure prevents moisture absorption, while mineral wool, although treated to be water repellent, can still absorb some moisture.

If you are insulating an area that is prone to dampness or high humidity levels, TR27 insulation may be the more suitable choice.

Comparing Sustainability

Both TR27 insulation and mineral wool insulation are considered sustainable choices for insulation. TR27 is manufactured with a blowing agent that has zero ODP and low GWP, while mineral wool is made from natural and recycled materials.

The specific environmental impact of each material will depend on factors such as the manufacturing process and transportation distances.

Comparing Cost and Installation

The cost of TR27 insulation and mineral wool insulation can vary depending on factors such as thickness, density, and brand. Generally, mineral wool insulation tends to be more cost-effective than TR27 insulation.

In terms of installation, both materials are relatively easy to install. TR27 insulation boards are lightweight and easy to cut and handle, while mineral wool is available in rolls or batts that can be easily fitted between joists, studs, or rafters.

Pros and Cons of TR27 Insulation

Advantages:

  • High thermal performance
  • Good moisture resistance
  • Lightweight and easy to handle
  • Good fire resistance
  • Environmentally friendly

Disadvantages:

  • Higher cost compared to mineral wool
  • Not as effective for soundproofing

Pros and Cons of Mineral Wool Insulation

Advantages:

  • Excellent acoustic performance
  • Good thermal performance
  • High fire resistance
  • Sustainable and environmentally friendly
  • Cost-effective

Disadvantages:

  • Lower moisture resistance compared to TR27
  • Can be irritating to skin and eyes during installation (wear appropriate PPE)

Which Type of Insulation is Right for You?

The choice between TR27 insulation and mineral wool insulation depends on your specific needs and priorities.

  • If thermal performance is your primary concern and budget is not a major constraint, TR27 insulation may be the better choice.
  • If acoustic performance and cost-effectiveness are more important, mineral wool insulation is a good option.

Consider the application, desired R-value, fire safety requirements, moisture levels, and your budget when making your decision.

Conclusion

Both TR27 insulation and mineral wool insulation are effective and versatile materials for improving the thermal and acoustic performance of your building. By understanding their key differences and considering your specific needs, you can choose the best insulation solution for your project.

Need Help Choosing the Right Insulation?

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