Cavity Wall Insulation Cost in Ireland

by | Nov 3, 2023

Cavity Wall Insulation Cost In Ireland

Insulating your home in Ireland can certainly feel like a mountainous challenge, particularly when faced with too many options and their respective costs. You’re not alone! If you’ve been left scratching your head at terms such as “pumped cavity,” “m2,” and fluctuating rates, we’ve got you the solution!

And considering the average cost of pumped cavity wall insulation sits between €8.50 and €13 per m2, it’s abundantly clear that an informed decision is key for both your cosy comfort and your wallet’s wellbeing.

This article aims to guide you through many different kinds of insulation, their costs and benefits, and available grants to help reduce any financial stress.

So put on your warmest jumper and let’s embark on this comforting journey together.

Understanding Cavity Wall Insulation

When it comes to cavity wall insulation, there are various types available for Irish homeowners. These include pumped cavity wall insulation and cavity block insulation, which can greatly improve the thermal performance of a property and help save on energy costs.

The process involves filling the empty space between the external walls with an insulating material, providing a barrier against heat loss. Attic spray foam insulation is also worth considering for its effectiveness in preventing heat from escaping through the roof.

Plus, grants are available from SEAI to make these upgrades more affordable for homeowners looking to increase their home’s energy efficiency.

Types of Insulation Available

There are many kinds of insulation to choose from. Some people like pumped-cavity wall insulation. This type gets put in the space between your home’s walls. It stops heat from going away and keeps bills low.

Another good pick is cavity block insulation. You can put this on the inside or outside of solid blocks in your house. People also use full external wall insulation a lot too! However, all types have different prices, so it’s best to think about what you need for your house first.

Suitable Homes for Cavity Wall Insulation

Cavity wall insulation is a great option for many homes in Ireland. It can be installed in houses with cavity walls, which are walls made up of two layers with a gap in between. Most homes built after the 1920s have this type of construction.

If your home has cavity walls, it could benefit from insulation. Insulating the cavity can help to keep heat inside and reduce energy bills. It’s especially beneficial for older properties that may not have as much insulation.

Whether you live in a detached house or a semi-detached one, cavity wall insulation can make a big difference. The cost will vary depending on factors like the size of your home and its construction period, but there are grants available that can help lower the cost.

Cavity Wall Insulation Process

To insulate your cavity walls, a series of steps are followed. Firstly, small holes are drilled into the external walls at regular intervals. Then, a special insulation material is pumped into the cavity using specialised equipment.

This material fills up the empty space between the inner and outer walls, providing an effective barrier against heat loss. Once the insulation has been injected, the holes are filled and made invisible.

The entire process usually takes a few hours to complete and doesn’t cause any disruption to your daily routine or mess in your home. With proper cavity wall insulation, you can enjoy improved energy efficiency and lower heating bills year-round.

The Best Insulation for Attics

When insulating your attic, one of the best options is spray foam insulation. Spray foam insulation creates a tight seal and provides excellent thermal performance, helping to keep your home warm in winter and cool in summer.

It also helps to prevent drafts and reduce noise transmission. Additionally, spray foam insulation can be installed quickly and easily in hard-to-reach areas, ensuring that every corner of your attic is properly insulated.

With its energy-saving benefits and long-term cost-effectiveness, spray foam insulation is a great choice for homeowners looking to improve their attic’s insulation.

Grants Available For Cavity Wall and Attic Spray Foam Insulation

We have good news for Irish homeowners! There are grants available to help you with the cost of cavity wall and attic spray foam insulation. The SEAI grant offers up to €1700 in funding, which can greatly reduce your expenses.

This means that you can improve your home’s energy efficiency and save money on heating bills without breaking the bank. So if you’re thinking about getting cavity wall or attic insulation, don’t hesitate to take advantage of these grants.

They can make a big difference in making your home more comfortable and affordable in the long run.

Cavity Wall Insulation Cost in Ireland

The cost of cavity wall insulation in Ireland varies depending on factors such as the property type, the insulation material used, and the size of the area to be insulated.

Average Cost Range Per Square Metre

The cost of pumped cavity wall insulation in Ireland usually ranges from €8.50 to €13 per square metre. For a typical semi-detached house, the cost would be between €550 and €950.

Homeowners should consider factors like the home’s construction period when estimating the total cost. It is also important to note that different types of insulation materials may have varying costs, but upgrading cavity wall insulation can lead to significant energy savings and lower heating bills.

Additionally, there is a SEAI grant available that provides funding of up to €1700 for cavity wall insulation projects.

Factors That Affect Cost

When it comes to the cost of cavity wall insulation in Ireland, there are several factors that can influence the price. The type of insulation you choose and the size of your property will impact the overall cost.

Additionally, factors such as the construction period of your home and whether it’s a semi-detached or detached property can also affect the cost. Other considerations include any additional work required, such as drilling holes or removing existing insulation.

It’s important to keep these factors in mind when estimating the cost, and remember that grants from SEAI may be available to help offset some of these expenses.

Comparison of Different Types of Insulation

There are several types of insulation available for cavity walls in Ireland. The most common ones include pumped cavity wall insulation, which costs around €8.50 to €13 per square metre and is suitable for most homes.

Another option is cavity block insulation, which can only be done on the outside or inside of the wall and costs between €50 and €95 per square metre. If you’re looking to insulate your attic, spray foam insulation is a popular choice that provides excellent thermal performance.

When comparing different types of insulation, consider factors such as cost-effectiveness and energy savings potential.

Cost-Effectiveness of Different Materials

Different materials have varying costs and effectiveness when it comes to cavity wall insulation. It is important to consider the long-term value of an investment in insulation as well as the initial cost.

For example, while pumped cavity wall insulation may have a higher upfront cost ranging from €8.50 to €13 per square metre, it can provide significant energy savings over time, helping you recoup the cost within 3 to 5 years.

On the other hand, materials like cavity block or solid block construction for external wall insulation may have lower costs ranging from €50 to €95 per square metre but might not offer comparable energy efficiency benefits.

Benefits of Insulating Cavity Walls

Insulating cavity walls in your home can bring many benefits. Firstly, it helps to keep your home warm by preventing heat from escaping. This means that you will need less heating, which can save you money on your energy bills.

Insulation also improves the thermal performance of your home, making it more energy-efficient overall. Additionally, insulating cavity walls can contribute to reducing carbon emissions and is a way of meeting building regulations for energy efficiency.

By investing in cavity wall insulation, you are not only creating a more comfortable living environment but also making a positive impact on the environment and saving money in the long run. Whether you’re renovating an existing property or building a new coastal home, ensuring proper insulation is crucial for energy efficiency and comfort.

At Coastal Homes, we specialise in designing and building energy-efficient coastal properties that take advantage of insulation and other green technologies. Contact us today to discuss your project and learn how we can help you create the perfect coastal retreat.

Wrapping Up: Cavity Wall Insulation Leads To Significant Energy Savings

Cavity wall insulation costs in Ireland can vary depending on factors like the type of insulation and the size of your home. So, investing in cavity wall insulation can lead to significant energy savings and a more comfortable home.

However, with grants available from SEAI, it’s worth exploring this option to make your home more energy-efficient and save money on heating bills in the long run.


What is the cost of cavity wall insulation in Ireland?

The price of cavity wall insulation in Ireland can change based on the size and type of foam used, but it often costs per square metre.

Can I get a grant for cavity wall insulation in Ireland?

Yes, there are grants for wall insulation, like the SEAI grant, to help lessen the cost of attic insulation or external wall insulation in Ireland.

How does pumped cavity block insulation work, and what does it cost?

Pumped Cavity Block Insulation fills gaps with spray foam. It can be more costly, but it keeps your home warmer than other types.

Are there any recommended companies that do this kind of work in Dublin?

There are many trusted companies that offer home insulation services, including cavity wall insulation of various types, around Dublin.

Is cavity wall insulation suitable for all types of buildings, including older homes?

Cavity wall insulation can be installed in various types of buildings, including older homes, but there may be certain considerations and assessments needed for older structures.

What is the typical payback period for cavity wall insulation in terms of energy savings?

The payback period for cavity wall insulation varies depending on factors like the size of your home and your heating habits. However, it’s a good idea to inquire about the estimated payback period when discussing insulation options with a provider.

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