House Insulation Costs in Ireland

by | Jun 10, 2024

House-Insulation-Cost-in-Ireland

Are you looking for ways to make your home more energy-efficient, comfortable, and eco-friendly? If so, you might be interested in house insulation, one of the most effective and affordable home improvement projects you can undertake. But how much does house insulation cost in Ireland, and what factors affect the price? In this blog, we will provide you with the essential information needed to make the right choice about your house insulation.

So, let’s get started!

What is House Insulation?

House insulation is the process of adding materials to the walls, roof, floor, and other parts of your house to reduce heat loss and gain. Insulation works by creating a barrier between the inside and outside of your house, preventing heat from escaping in the winter and entering in the summer. This way, you can maintain a comfortable indoor temperature without relying too much on heating and cooling systems, which can be expensive and harmful to the environment.

What Are the Types of House Insulation and Their Costs?

There are many types of house insulation available in Ireland, each with its own advantages, disadvantages, and costs. The type of insulation you choose depends on several factors, such as the size, shape, and age of your house, the existing insulation (if any), the climate, and your budget and preferences.

Here are some of the most common types of house insulation and their approximate costs, based on the average prices from SEAI and other sources :

Cavity wall insulation

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Cavity wall insulation is suitable for houses with cavity walls, which are walls that have a gap between two layers of bricks or blocks. Cavity wall insulation involves filling the gap with an insulating material, such as mineral wool, polystyrene beads, or foam, using a special machine that drills holes in the outer layer of the wall and injects the material. Cavity wall insulation can reduce heat loss by up to 35%, and costs around €800 to €1,200 for a semi-detached house.

External wall insulation

External wall insulation is suitable for houses with solid walls, which are walls that have no gap between the bricks or blocks. External wall insulation involves attaching an insulating material, such as expanded polystyrene, mineral wool, or phenolic foam, to the outside of the wall and covering it with a protective layer of render, cladding, or brick slips. External wall insulation can reduce heat loss by up to 40% and costs around €9,000 to €15,000 for a semi-detached house.

Internal wall insulation

Internal wall insulation is also suitable for houses with solid walls, but involves applying an insulating material, such as rigid foam boards, flexible rolls, or plasterboard with insulation, to the inside of the wall and finishing it with plaster or paint. Internal wall insulation can reduce heat loss by up to 30% and costs around €4,000 to €8,000 for a semi-detached house.

Attic insulation

Attic insulation is suitable for houses with pitched roofs, which are roofs that have a slope or angle. Attic insulation involves laying an insulating material, such as mineral wool, cellulose, or sheep’s wool, between and over the joists (the horizontal beams that support the roof) in the attic or loft space. Attic insulation can reduce heat loss by up to 25% and costs around €300 to €800 for a semi-detached house.

Flat roof insulation

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Flat roof insulation is suitable for houses with flat roofs, which are roofs that have no slope or angle. Flat roof insulation involves installing an insulating material, such as rigid foam boards, polyisocyanurate (PIR), or extruded polystyrene (XPS), either above or below the waterproof membrane that covers the roof. Flat roof insulation can reduce heat loss by up to 25%, and costs around €2,000 to €4,000 for a semi-detached house.

Floor insulation

Floor insulation is suitable for houses with suspended timber floors, which are floors that have a gap between the floorboards and the ground. Floor insulation involves placing an insulating material, such as mineral wool, rigid foam boards, or polystyrene beads, in the gap and sealing any gaps or cracks in the floorboards. Floor insulation can reduce heat loss by up to 15%, and costs around €800 to €1,200 for a semi-detached house.

What Factors Affect House Insulation Costs in Ireland?

There are several factors that can affect the cost of house insulation in Ireland, such as:

The size and shape of your house

The larger and more complex your house is, the more insulation material and labour you will need, and the higher the cost will be.

The condition and accessibility of your house

The older and more damaged your house is, the more preparation and repair work you will need, and the higher the cost will be. Similarly, the more difficult it is to access certain parts of your house, such as the walls, roof, or floor, the more time and effort you will need, and the higher the cost will be.

The quality and performance of the insulation material

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The higher the quality and performance of the insulation material, the more effective and durable it will be, and the higher the cost will be. The quality and performance of the insulation material can be measured by its thermal conductivity, which is the rate at which it transfers heat, and its thermal resistance, which is the measure of its ability to resist heat flow.

The installation method and labour cost

The more complicated and labour-intensive the installation method, the more time and skill you will need, and the higher the cost will be. The installation method and labour cost can vary depending on the type of insulation, the contractor, and the location. The installation method and labour cost can also include the cost of removing and disposing of any existing insulation, if necessary.

The grants and incentives available

There are grants and incentives available in Ireland to help you with the cost of house insulation, such as the SEAI Home Energy Grants, the Warmer Homes Scheme, and the Better Energy Communities Scheme. These grants and incentives can cover up to 35% of the cost of house insulation, depending on the type of insulation, the energy rating of your home, and your eligibility criteria. You can apply for these grants and incentives online or through an approved contractor.

Conclusion

House insulation in Ireland is a smart choice for enhancing your home’s energy efficiency and comfort. With various types of insulation, like cavity walls, external walls, internal walls, attics, flat roofs, and floor insulation, costs vary based on your house’s specific needs. While factors such as house size, condition, material quality, and installation methods influence the cost, the investment pays off in reduced energy consumption and a more comfortable living environment.

Additionally, homeowners can benefit from grants and incentives like the SEAI Home Energy Grants to ease the financial burden. To get professional home insulation services, reach out to Coastal Homes’ insulation professionals today.

Frequently Asked Questions

How much does it cost to insulate a house in Ireland?

Insulating a house in Ireland varies in cost, depending on several factors like the house size, type of insulation, and installation method. Generally, homeowners may spend between €1,200 and €4,000 for comprehensive home insulation.

How much does external wall insulation cost in Ireland?

The cost of external wall insulation in Ireland depends on the house’s surface area and materials used. Homeowners should get specific estimates from contractors based on their unique requirements.

Is there a grant for home insulation in Ireland?

Yes, homeowners in Ireland can apply for energy efficiency grants, including specific wall or attic insulation grants, to help reduce expenses​​.

How much does attic insulation typically cost in Ireland?

Attic insulation costs in Ireland range between €450 and €700, varying with attic size and materials used​​.

Is it costly to install new insulation in my Dublin home?

The cost of installing new insulation in Dublin can vary based on factors like building size and material choice, with installation typically adding to the overall expenses​​.

Can insulation improve my home’s energy rating in Ireland?

Properly installed insulation significantly improves a home’s energy rating, leading to reduced energy bills and increased efficiency​​.

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