Attic Insulation Cost

Matt Keane
July 27, 2023

Are you constantly battling with fluctuating indoor temperatures? With the changing climate conditions in Ireland, there’s never been a better time to invest in attic insulation. But how much should you expect to pay? This in-depth guide delves into the attic insulation cost, providing comprehensive information to help you make an informed decision. Let’s get you warmed up!

What is Attic Insulation?

Attic insulation refers to the practice of applying insulating materials in the attic space of a building to prevent heat from escaping during winter and to keep the house cool during summer. It’s a crucial part of home design that ensures energy efficiency and comfort.

Whether you live in a bungalow or a five-bedroom house, understanding the benefits of attic insulation is key. It reduces the strain on your HVAC system, leading to decreased energy consumption and lower energy bills. Now let’s explore the different types of attic insulation.

Types of Attic Insulation

Attic Insulation Cost: The Ultimate Breakdown for Irish Homeowners 5

Fibreglass Insulation

Fibreglass, comprised of finely spun glass fibres, is among the most widely used insulation materials. It is celebrated for its cost-effectiveness, versatility, and excellent thermal performance. Fibreglass can effectively slow the spread of heat, cold, and sound in structures, making it a go-to choice for many homeowners.

Spray Foam Insulation

This insulation type is quite innovative. Spray foam insulation expands to fill cracks and gaps, forming a tight thermal and moisture barrier. While it’s pricier than traditional insulation materials, it provides superior energy efficiency benefits thanks to its high R-value.

Mineral Wool Insulation

Mineral wool insulation, manufactured from rock or slag wool, is renowned for its fire-resistant and soundproofing qualities. It’s easy to install and is effective in preventing heat loss, making it a popular choice in many insulation projects.

Rigid Foam Board Insulation

Rigid foam board insulation stands out with its high insulating values with little thickness. It’s ideal for spaces where you want maximum insulation with minimal intrusion on living space. Despite its higher cost, it’s often chosen for its excellent thermal performance.

Sheep’s Wool Insulation

An eco-friendly insulation option, sheep’s wool insulation brings sustainability to your insulation needs. In addition to being renewable, it also regulates humidity, is flame-resistant, and provides superb thermal insulation.

Hemp Insulation

Another sustainable choice, hemp insulation, is pest-resistant, non-toxic, and has excellent thermal properties. It’s a high-performing insulation material that’s gaining traction in eco-conscious construction projects.

Factors That Affect Attic Insulation Cost

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Several factors can influence the cost of attic insulation, including:

Insulation Material

Different materials have different costs. While options like fibreglass are relatively affordable, others like spray foam insulation come at a premium due to their superior insulating properties.

Size of the Attic

The larger the attic, the more materials you’ll need, hence higher costs. If you’re considering insulation, getting a precise measurement of your attic space will provide a clearer idea of the possible expenses.

Complexity of the Job

Every attic is unique. If your attic has hard-to-reach areas, multiple corners, or requires special preparation, the cost may increase due to the additional time and skill needed to insulate effectively.

Labour Costs

Labour costs vary based on the insulation contractor you choose. While it may be tempting to opt for the cheapest offer, remember that experience and quality of work often correlate with price.

Breakdown of Attic Insulation Cost

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How much does attic insulation cost? The exact cost of attic insulation varies based on the factors mentioned above. However, here’s a rough estimate for homes of different sizes in Ireland:

  • 2 Bed House: €1,450 – €1,700
  • 3 Bed House: €1,700 – €2,050
  • 4 Bed House: €2,050 – €2,550
  • 5 Bed House: €2,550 – €3,550
  • Bungalows: Will need a survey
  • New Build: Will need a survey

Attic insulation cost also varies per square meter (m2) based on the insulation material:

  • Fiberglass: €7.50 – €9.50
  • Spray Foam: €25 – €29
  • Mineral Wool: €11.50 – €14.50
  • Rigid Foam Board: €12.50 – €15.50
  • Sheeps Wool: €23 – €31
  • Hemp: €12 – €15

Most Cost-Effective Ways to Insulate Your Attic

To maximise your investment, consider these cost-effective strategies for attic insulation:

Choose the Right Material

Research different insulation materials and choose one that provides a balance between cost and performance. A slightly more expensive option with better insulating properties might save you more in the long run.

Consider DIY

If you have the skills and confidence, DIY attic insulation can save on labour costs. However, ensure that you’re capable of performing the job correctly, as mistakes can lead to greater costs down the line.

Regular Maintenance

Regularly checking and maintaining your insulation can prolong its life and prevent costly repairs or replacements.

Grants and Incentives

Check for government grants and incentives for energy-efficient home improvements. These programmes can significantly offset the attic insulation cost.

Importance and Benefits of Attic Insulation

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Insulating your attic has many benefits:

Energy Efficiency

An insulated attic reduces heat transfer, meaning less energy is needed to heat or cool your home. This results in lower energy bills and contributes to a greener, more sustainable home environment.


Insulation keeps your home temperature steady, regardless of the weather outside. By preventing heat loss in winter and heat gain in summer, insulation ensures your home is comfortable all year round.

Prevents Damage

Attic insulation helps to prevent potential damage caused by moisture build-up, such as mould growth and structural degradation.

Increases Property Value

Energy efficiency is a selling point for many homebuyers. A well-insulated home can boost your property’s value, providing a sound return on investment when you decide to sell.

Hire BuildTech for Your Attic Insulation Needs

Are you considering insulating your attic and unsure about the attic insulation cost? Let BuildTech, a premier design and build company in Ireland, help you. With our wealth of experience and commitment to excellence, we’ll provide you with a comprehensive quote, factoring in your specific needs and budget.

Don’t leave your comfort and energy efficiency to chance. Contact us today, and let’s make your home more energy-efficient with quality attic insulation. We look forward to working with you!

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