FREE Internal
Wall Insulation


Free Internal Wall Insulation Aberdeen

Envirohomes Renewables leads the charge as Aberdeen’s premier internal wall insulation specialists. Renowned for our dedication to renewable home services across Aberdeen and Scotland, we understand the critical role internal wall insulation plays in enhancing energy efficiency and reducing energy expenses. 

Our primary focus revolves around delivering fully funded internal wall insulation solutions, coupled with various renewable home services, to low-income households in Aberdeen and beyond, courtesy of the Government’s ECO 4 scheme.

Our expert team of internal wall insulation installers in Aberdeen boasts comprehensive industry accreditations, including the prestigious PAS 2030 certification. This ensures that every job we undertake meets the highest standards of quality and professionalism, providing you with peace of mind.

Securing a free insulation grant in Scotland, including Aberdeen, is straightforward, with schemes like the Energy Company Obligation 4 (ECO4) in operation. This government-backed initiative focuses on upgrading heating systems to reduce carbon emissions and combat fuel poverty. It targets the least energy-efficient homes across Scotland and the UK, including Aberdeen, aiming to improve their heating systems and overall energy efficiency.

The ECO4 scheme is scheduled to continue until March 2026, with a strong emphasis on enhancing energy efficiency. Through partnerships with energy suppliers and local authorities, eligible households in Aberdeen and beyond can access support to improve their homes’ insulation and heating systems.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables facilitates eligible customers in accessing and implementing a diverse array of home improvement upgrades through the ECO 4 scheme. This initiative primarily targets low-income and vulnerable households, aligning seamlessly with the government's overarching objectives of combatting fuel poverty and striving for carbon neutrality by 2050.

Here are the criteria needed to be eligible for this grant

ECO Scheme grant eligibility

    • Annual income below £19,720.
    • Homeownership, private tenancy, or receipt of social housing benefits.
    • Receipt of specific benefits such as Child Benefit, Income Support, etc.
    • Pensioners over 60 receiving Pension Credit Benefits.
    • Homes boasting an Energy Performance Certificate (EPC) rating of D or lower.

What Is Internal Wall Insulation?

Internal wall insulation stands as a paramount home improvement method aimed at enhancing energy efficiency. This technique entails the addition of 60 mm to 100 mm of insulation materials, such as rigid insulation boards composed of plasterboard or mineral wool fibers, onto the interior surfaces of external walls within a property. The primary objective of internal wall insulation is to significantly reduce heat loss, thereby fostering a more thermally efficient indoor environment.

This energy-efficient insulation approach offers several advantages. Notably, it tends to be more cost-effective compared to external wall insulation, making it a favorable option for homeowners seeking to improve their property’s insulation without breaking the bank. Moreover, internal wall insulation presents an ideal solution for properties lacking cavity walls or where cavity wall insulation may not be feasible due to structural constraints or other limitations.

What is the difference between
internal wall, cavity wall and solid wall insulation?

While all these insulating techniques serve as energy efficiency improvements, they do vary slightly in their function and application.

Internal insulation is designed for properties with solid walls but focuses on insulating the interior (inside) walls of the building.

    • Insulating materials typically range from 60 mm to 100 mm in thickness and commonly include rigid insulation boards or mineral wool fibers.
    • Installation may require the removal of existing wall coverings to accommodate the insulation materials.
    • The final result is visible on the interior of the property, potentially influencing room sizes and overall aesthetics.
    • Despite potential aesthetic considerations, internal wall insulation is generally a more cost-effective option compared to external wall insulation.

Cavity Wall insulation is tailored for properties featuring cavity walls, which comprise two layers: an outer and an inner wall with a space between them known as the cavity. This cavity is filled with insulating materials to heighten home warmth and conserve energy.

  • The insulation process typically involves drilling holes into the walls, through which cavity wall insulation materials like mineral wool or foam are injected. These materials expand upon injection, effectively filling the cavity space.
  • Subsequently, the access holes are concealed with plaster or similar materials to seamlessly blend with the property’s aesthetics.
  • Cavity wall insulation yields several benefits, including improved heating, reduced energy bills, and enhanced energy efficiency within homes.
  • Notably, this insulation method tends to be relatively swift to complete, resulting in minimal disruption for homeowners and tenants alike.

Solid wall insulating, is specifically tailored for older builds or solid wall properties without cavity walls and is applied externally to the building. 

  • Homes constructed before 1920 typically have solid walls.
  • Various application methods include external cladding, rendering (plastering), or insulation boards.
  • It effectively enhances energy efficiency and thermal regulation for solid wall properties.
  • The installation process does not affect interior living spaces or aesthetics.

Solid wall insulation tends to be more expensive than internal insulation options.

How Does Internal Wall Insulation Work?

What Are The
Advantages and Disadvantages

Of Internal Wall Insulation?

Advantages of internal wall insulation

  • Internal wall insulation is particularly suitable for solid wall properties.
  • It effectively improves energy efficiency within the home.
  • By retaining heat, it enhances warmth and overall comfort.
  • Internal wall insulation contributes to a reduced carbon footprint.
  • Installation can lead to an increase in property value.
  • It aids in financial support by reducing energy needs and consequent expenses.

Disadvantages of internal wall insulation

  • Reduction in available room space
  • Disruption experienced throughout the installation process
  • Possible costs incurred if eligibility for a free insulation grant is not met
  • Increased maintenance expenses if insulation installation is improperly executed by trained professionals
  • Risk of dampness and mold growth

Note: For any interior wall insulation grant or home improvement funding to be approved, it must be managed by an approved installer (such as Envirohomes Renewables) by the specific scheme (such as the ECO4 scheme).


If your household falls within the bracket of low income or benefits recipients, there exists a high likelihood that you qualify for comprehensive funding to cover the costs of insulation via the ECO4 scheme. This financial assistance is instrumental in enhancing the energy efficiency of your home, ultimately resulting in notable reductions in heating expenditures. Importantly, eligibility for a government insulation grant extends beyond benefit recipients, meaning that even households without such benefits may still meet the criteria for this support.

 If your property was built in the past 20 years, it’s probable that the walls are already insulated, alongside other energy-efficient features. To verify this, you can engage certified installers to conduct a borescope inspection. During this process, a small hole is made in the exterior wall, allowing experts to assess whether the walls are insulated or empty.

There are numerous strategies to lower energy expenses:

  • Turn off lights when not in use.
  • Lower the thermostat by 1 or 2 degrees.
  • Wear warmer clothing indoors, such as jumpers or socks.
  • Upgrade to energy-efficient A-grade appliances.
  • Limit shower time to conserve hot water usage.

Indeed, the Energy Saving Trust extends its support to Aberdeen, akin to its offerings across the UK. Residents and businesses in Aberdeen can benefit from advice, information, and support provided by the Energy Saving Trust to reduce energy consumption, lower energy bills, and cut down on carbon emissions.

Absolutely. Research indicates that uninsulated solid walls can lead to a significant loss of heat, accounting for up to 45% of overall heat loss in a property. Additionally, an uninsulated roof can contribute to an additional 25% of heat loss. These statistics underscore the critical importance of ensuring proper insulation for your walls.

Our team of internal wall insulation specialists in Aberdeen boasts extensive training and holds all relevant industry accreditations, including the esteemed PAS 2030 certification. This ensures that every project we undertake is executed to the highest standards, providing you with confidence and peace of mind in our services.

Securing a free insulation grant in Scotland and the UK is straightforward, with various schemes available to homeowners. Among these, the Energy Company Obligation 4 (ECO4) scheme stands out as one of the largest and most accessible initiatives.

The ECO4 scheme, backed by the government, is a comprehensive UK program aimed at upgrading heating systems to combat carbon emissions and alleviate fuel poverty. It specifically targets the least energy-efficient homes across Scotland and the wider UK, striving to enhance their heating systems and overall energy performance.

Scheduled to continue until March 2026, the ECO4 scheme places a strong emphasis on improving energy efficiency. It operates in collaboration with energy suppliers and local authorities to identify eligible households and provide them with the necessary support and resources to upgrade their homes.

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Registered office address: 12 Somerset Place, Glasgow, Scotland, G3 7JT.
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