If you are planning to make your home in Ireland warmer and more energy-efficient, internal wall insulation is an excellent option to consider. With rising energy costs and increasing emphasis on sustainable living, insulating your home has never been more important. But the big question for many homeowners is: how much does internal wall insulation cost in Ireland?

This comprehensive guide will answer that question in detail. We will look at average costs, factors that affect pricing, available grants, and whether internal insulation is worth the investment.

Why Choose Internal Wall Insulation?

Internal wall insulation involves fixing insulated boards to the inside of your external walls and then finishing them with plasterboard. This method is commonly chosen for older properties with solid walls or homes where cavity wall insulation is not an option.

Key Benefits

• Improved Energy Efficiency: Internal wall insulation significantly reduces heat loss through external walls, which can account for up to 35% of heat loss in an uninsulated home.
• Lower Heating Bills: A well-insulated home requires less energy to heat, reducing your heating costs.
• Enhanced Comfort: Insulation helps maintain a consistent indoor temperature, making your home more comfortable year-round.
• Better BER Rating: Upgrading insulation can improve your Building Energy Rating, increasing property value.

How Much Does Internal Wall Insulation Cost in Ireland?

Average Cost Per Square Metre

The cost of internal wall insulation in Ireland typically ranges from €80 to €130 per square metre. This price generally includes:

• Insulated boards
• Vapour barriers
• Plasterboard and finishing
• Labour and installation

Typical Cost for a Semi-Detached House

For a standard three-bedroom semi-detached house, expect to pay between €6,000 and €12,000.

Internal Wall Insulation Cost by Property Type

These figures include both materials and labour. Costs can vary depending on the size of your home, condition of your walls, and choice of insulation material.

Factors Affecting Internal Wall Insulation Costs

Several factors can influence the cost of internal wall insulation:

1. Size of the Property

Larger properties naturally require more insulation materials and labour, increasing overall costs.

2. Wall Condition

If your walls have issues such as damp or structural damage, additional preparation work will add to the price.

3. Choice of Insulation Material

The type of insulation material you choose can significantly impact the price. Options include:

• Rigid Insulation Boards (PIR, EPS) – Common and cost-effective
• Mineral Wool with Studwork – Provides good acoustic insulation but requires more labour
• Eco-Friendly Materials (Sheep Wool, Hemp) – Sustainable, but typically more expensive

4. Labour Costs

Labour rates vary across Ireland, with higher costs in major cities like Dublin compared to rural areas.

5. Finishing Work

After installing insulation, you may need to move radiators, adjust electrical sockets, and redecorate, all of which add to the total cost.

Are There Grants for Internal Wall Insulation?

Yes, the Sustainable Energy Authority of Ireland (SEAI) provides generous grants to homeowners looking to insulate their homes. These grants can significantly reduce the upfront cost of internal wall insulation.

SEAI Grant Amounts for Internal Insulation

Eligibility Criteria

• Your home must have been built and occupied before 2011.
• Work must be carried out by an SEAI-approved contractor.

How to Apply for the Grant

1. Choose an SEAI-registered contractor.
2. Get a quotation and submit your application online through the SEAI portal.
3. Wait for approval before starting work.
4. After completion, submit the required documents to claim your grant.

Internal vs External Wall Insulation: Which is Better?

Both internal and external wall insulation options have advantages and disadvantages:

If your budget is limited and you want a cost-effective solution, internal wall insulation is often the better choice.

Pros and Cons of Internal Wall Insulation

Advantages

• Lower initial cost compared to external insulation
• No changes to the exterior of your property
• No planning permission required in most cases

Disadvantages

• Reduces internal floor space by approximately 3–5 cm per wall
• Can be disruptive as work is carried out inside the home
• May require adjustments to radiators, sockets, and skirting boards

Can You Install Internal Wall Insulation Yourself?

While it is technically possible to install internal wall insulation as a DIY project, it is generally not recommended. Poor installation can lead to:

• Condensation and damp problems
• Reduced insulation performance
• Risk of voiding your eligibility for grants

For best results and to qualify for SEAI grants, work should be completed by an approved professional.

Is Internal Wall Insulation Worth It?

Yes. Internal wall insulation is one of the most cost-effective energy efficiency upgrades you can make. Here’s why:

• Lower Heating Bills: You can save up to €600 annually on energy costs.
• Fast Payback: When combined with SEAI grants, many homeowners recover their investment in under eight years.
• Increased Property Value: Improved BER rating makes your home more attractive to buyers.

Tips to Reduce Internal Wall Insulation Costs

• Apply for SEAI Grants: This can reduce your costs by up to €4,500.
• Get Multiple Quotes: Prices vary between contractors.
• Combine with Renovation Work: If you’re already planning a refurbishment, add insulation to save on labour costs.
• Prioritise Key Rooms: If your budget is tight, start with the rooms you use most, such as living rooms and bedrooms.

Final Thoughts

Internal wall insulation is a smart investment for Irish homeowners looking to reduce heating costs and improve home comfort. While the average cost ranges from €6,000 to €12,000, SEAI grants can make it far more affordable.

If you’re ready to upgrade your home, Osber can help you every step of the way. As specialists in wall insulation, attic and roof insulation, and ventilation solutions, we ensure high-quality service at competitive prices. We also assist homeowners in applying for SEAI grants, making the process simpler and more cost-effective.

Contact Osber today for expert advice and a free quote on internal wall insulation. Take the first step towards a warmer, more energy-efficient home.