When it comes to insulating your home, there is a huge range of insulation options to choose from. Not only are there several different insulation materials, but you will find different thicknesses on the market too. Many don’t realise how much of an impact the thickness of the insulation can make on the comfort and efficiency of their home.Among the range of thicknesses, you will find popular options like 75mm insulation board and 150mm insulation board. Each of these has its own set of benefits and applications, so it’s important to understand the differences to make an informed decision for your project. In this post, we have explored these two thicknesses in more detail, helping you choose the best option for your specific insulation needs.

Understanding Insulation Board Thickness

Knowing what the thickness of insulation boards means is essential to optimising your home’s thermal efficiency. These boards, made from insulating materials like polyisocyanurate (PIR), are rigid panels that can be used for insulating walls, floors and roofs. The thickness is a critical aspect that directly impacts the board’s R-value. This measure of thermal resistance will essentially tell you how effective the insulation will be at preventing heat transfer once installed.A thicker insulation board will typically provide superior insulation, enhancing energy efficiency. However, selecting the right thickness involves balancing various factors including space availability, budget and specific project needs. This approach ensures the chosen insulation board meets both your thermal performance needs and practical requirements.

75mm Insulation Board

The 75mm insulation board is often chosen for areas with limited space but insulation is necessary. Here are some key points to consider about this thickness of insulation;Pros

    Space-Saving – The thinner profile of the 75mm board makes it ideal for applications where space is limited, such as in internal wall insulation or retrofit projects.

 

    Flexibility – It’s easier to install and handle, especially in tight corners or awkward spaces, making it ideal for DIY projects. Cost-Effective – Generally, thinner boards are less expensive upfront, making them a budget-friendly option for many projects. 

Cons

    Lower Insulation Value – The thinner insulation material means it has a lower R-value compared to thicker boards. This could lead to higher energy costs over time. May Require Additional Layers – In some cases, you might need to install multiple layers to achieve the desired thermal performance, which can add to the cost and complexity of the installation project. 

150mm Insulation Board

For homeowners looking to maximise insulation and energy efficiency, the 150mm insulation board is a popular choice. Here’s why;Pros

    Higher R-Value – The thicker material provides greater thermal resistance, ensuring better retention of heat and more significant energy savings in the long run. Reduced Heat Loss – A thick PIR insulation board is particularly effective in colder climates where maintaining warmth is crucial.

 

    Long-Term Cost Savings – Though more expensive initially, the energy savings over time can offset the higher upfront cost.

Cons 

    Requires More Space – The thicker profile might not be suitable for all types of projects, especially where space is at a premium.

 

    Heavier and Harder to Handle – Thick installation can be more challenging to install due to the weight and size of the boards. It may require professional assistance. 

Choosing the Right Thickness for Your Project

When deciding between 75mm and 150mm insulation boards, or boards of similar thicknesses, be sure to consider the following factors; 

    Space Availability – Assess the space where the insulation will be installed. If space is limited, a thinner 75mm board might be more practical. Climate and Energy Needs – In colder regions or if high energy efficiency is a priority, the thicker 150mm board is a better choice. Budget – Your budget for the initial installation as well as long-term energy costs is important. While 75mm boards are cheaper upfront, 150mm boards may offer more savings over time. Building Regulations – Check local building codes and regulations, as they may dictate minimum insulation requirements, influencing your final choice.  

Investing in Insulation Boards 

The choice between different thicknesses of insulation boards depends on your specific requirements and it’s important to find a solution that’s ideal for your project. By carefully considering the factors above, you can select the right insulation thickness for your home, ensuring optimal thermal performance and energy efficiency. Remember, the right insulation not only contributes to a comfortable and sustainable living environment but also plays a significant role in long-term energy savings. For more information or to explore the vast range of insulation products available, visit the Online Insulation website today. We supply insulation from leading brands and we have a solution for every application on our website. If you need some advice when narrowing down the market, our team will be happy to help. With many years of experience, we can provide you with the informed and impartial advice you need. We look forward to helping you find the right solutions for your home.