Introduction
External wall insulation (EWI) is one of the best ways to improve energy efficiency, reduce heat loss, and lower heating bills in Irish homes. With rising energy costs and a growing focus on sustainable living, more homeowners in Ireland are exploring this solution. But one of the most common questions is: How much does external wall insulation cost in Ireland?
This guide provides a clear overview of prices, factors affecting costs, available grants, and why it’s a smart investment for your home.
What Is External Wall Insulation?
External wall insulation involves adding an insulating layer to the outside walls of your home and then covering it with a protective and decorative finish such as render or cladding.
It helps to:
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Improve thermal performance
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Reduce heat loss through walls
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Eliminate cold spots and drafts
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Enhance your home’s exterior appearance
Average Prices for External Wall Insulation in Ireland
The cost of external wall insulation in Ireland generally ranges between €90 to €140 per square metre, depending on several factors such as property size, wall condition, and chosen insulation materials.
Typical Cost for Different Property Types:
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Small Terraced House (Approx. 80m²): €7,000 – €11,000
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Semi-Detached House (Approx. 120m²): €10,000 – €16,000
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Detached House (Approx. 200m²): €18,000 – €28,000
These figures are approximate and may vary depending on the contractor, materials, and additional work required (e.g., scaffolding, render finish, or structural repairs).
Factors That Affect the Price
Several factors influence the overall cost of external wall insulation in Ireland:
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Size of the Property
Larger homes have more external wall surface area, leading to higher material and labour costs. -
Type of Insulation Material
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Expanded Polystyrene (EPS): Affordable and widely used.
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Mineral Wool: Excellent thermal and acoustic properties but slightly more expensive.
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Phenolic Insulation Boards: High performance but premium-priced.
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Wall Condition
If your walls need repairs before insulation, additional costs will apply. -
Finish Type
Decorative finishes such as coloured render, brick slips, or cladding may increase prices. -
Access and Location
Difficult-to-reach areas or multi-storey buildings may require extra scaffolding or equipment.
Grants and Financial Support in Ireland
The Sustainable Energy Authority of Ireland (SEAI) provides grants to help homeowners reduce the cost of external wall insulation.
SEAI Grant Amounts (as of 2024):
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Apartment/Mid-Terrace House: Up to €3,000
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Semi-Detached/End-Terrace House: Up to €6,000
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Detached House: Up to €8,000
To qualify, your home must have been built before 2011, and the work must be carried out by an SEAI-registered contractor.
Long-Term Savings
Although the upfront cost may seem high, external wall insulation can reduce heating bills by up to 30-40% annually. Over time, this investment pays for itself through energy savings while also increasing your home’s value and comfort.
Additional Benefits
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Improved Energy Rating: Boost your BER (Building Energy Rating).
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Better Comfort: No more cold walls or drafts.
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Aesthetic Upgrade: Fresh, modern exterior finish.
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Reduced Carbon Footprint: Lower energy use means fewer emissions.
How to Choose the Right Contractor
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Look for SEAI-registered installers.
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Request multiple quotes to compare prices and services.
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Check reviews and previous work.
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Ensure guarantees and warranties are included.
Conclusion
External wall insulation is a worthwhile investment for Irish homeowners looking to save on energy bills, increase property value, and create a warmer, more comfortable home. With SEAI grants available, the overall cost becomes much more affordable, making now the perfect time to upgrade your home.
FAQs
1. How long does external wall insulation last?
With proper installation and maintenance, it can last over 30 years.
2. Can I get a grant for external wall insulation in Ireland?
Yes, SEAI offers grants of up to €8,000 depending on your property type.
3. Does external wall insulation add value to my home?
Yes, it improves energy efficiency and aesthetics, making your property more attractive to buyers.
4. Is planning permission required?
Generally, no, but check with your local council if major changes to your home’s exterior are planned.
5. How long does installation take?
Typically 2–3 weeks, depending on the size and condition of your home