FREE Internal
Wall Insulation


Free Internal Wall Insulation Ayrshire

Envirohomes Renewables stands out as the leading expert in internal wall insulation in Ayrshire, Scotland. As a prominent provider of home renewable services in Scotland, we recognize the crucial role internal wall insulation plays in enhancing energy efficiency and reducing energy bills for homeowners.

Our focus lies in delivering fully funded internal wall insulation services alongside other renewable solutions to low-income households receiving benefits in Scotland, facilitated by the Government’s ECO 4 scheme.

With our team of highly trained installers possessing industry accreditations like PAS 2030 certification, we ensure the highest standards in all our insulation projects.

Securing a free insulation grant in Scotland and the UK is now more accessible than ever, primarily through schemes like the Energy Company Obligation 4 (ECO4) scheme.

This government-backed initiative aims to upgrade heating systems, reduce carbon emissions, alleviate fuel poverty, and enhance heating efficiency in homes across Scotland and the UK.

Scheduled to continue until March 2026, the ECO4 scheme emphasizes energy efficiency and collaboration with energy suppliers and local authorities to identify eligible households.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables facilitates the process for eligible customers to obtain and install various home improvement upgrades through the ECO4 scheme, aligning with the government's commitments to tackle fuel poverty and achieve carbon neutrality by 2050.
Here are the criteria needed to be eligible for this grant

ECO Scheme grant eligibility

    • Individuals with an annual income below £19,720.
    • Homeowners, private tenants, or recipients of social housing benefits.
    • Individuals receiving certain benefits such as Child Benefit, Income Support, etc.
    • Pensioners (over 60) receiving Pension Credit Benefits.
    • Homes with an Energy Performance Certificate (EPC) rating of D or lower.

What Is Internal Wall Insulation?

Internal wall insulation is a comprehensive approach designed to improve a property’s energy efficiency. It entails incorporating insulation materials, typically ranging from 60mm to 100mm thick, onto the inner surfaces of exterior walls. The primary objective is to minimize heat loss within the building.

This method is particularly beneficial for properties without cavity walls or where external insulation cannot be installed. By adopting internal wall insulation, homeowners can create a strong thermal barrier within their homes, effectively reducing heat transfer and enhancing overall energy conservation.

This not only leads to a more comfortable indoor environment but also results in significant long-term energy savings and contributes to environmental sustainability.

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 targets properties with solid walls, focusing on insulating the interior walls.

    • Insulation materials, usually 60 mm – 100 mm thick rigid boards or mineral wool fibers, are installed on the interior walls.
    • Installation may necessitate the removal of existing wall coverings.
    • The process may affect room sizes and aesthetics but proves more economical than external wall insulation.

Cavity Wall insulation suits properties with cavity walls, consisting of outer and inner walls with a gap between them.

  • Insulation materials like mineral wool or foam are injected into the cavity through drilled holes.


  • The access points are then covered to maintain property aesthetics.


  • It offers quick installation with minimal disruption.

Solid wall insulating, caters to older or solid wall properties, applied to the exterior of the building.

  • Properties constructed prior to 1920 typically feature solid walls due to construction practices of that era.
  • Solid wall insulation employs various methods like external cladding, rendering, or insulation boards to enhance thermal efficiency.
  • Solid wall insulation significantly improves energy efficiency and thermal regulation, reducing reliance on heating and cooling systems.
  • Unlike internal insulation, solid wall insulation is implemented externally, preserving interior spaces and minimizing disruption during installation.

Solid wall insulation often requires a higher initial investment when compared to internal insulation options.

How Does Internal Wall Insulation Work?

What Are The
Advantages and Disadvantages

Of Internal Wall Insulation?

Advantages of internal wall insulation

  • Suitable for solid wall properties.


  • Enhanced energy efficiency and comfort.


  • Reduced carbon footprint.


  • Increased property value.


  • Financial support through reduced energy needs.

Disadvantages of internal wall insulation

  • Reduction in room space.


  • Disruption during installation.


  • Potential cost implications for ineligible applicants.


  • Increased maintenance costs if installation is inadequate.


  • Risk of dampness/mould 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).


While eligibility primarily targets low-income households and benefit recipients, individuals with low income may still qualify for full funding under the ECO4 scheme, irrespective of benefit status.

This funding significantly enhances energy efficiency and reduces heating expenses for eligible homeowners.

Homes constructed within the last two decades likely have insulation, including cavity wall insulation.

To confirm its presence, certified installers can perform a borescope inspection, making a small hole in the exterior wall to assess insulation status.

In addition to wall insulation, several measures can reduce energy bills, such as

  • Incorporate energy-conserving habits into your daily routine, such as turning off lights when they’re not needed, which can significantly reduce electricity consumption.
  • Make small tweaks to your thermostat settings, lowering it by just a degree or two, to save energy without sacrificing comfort.
  • Consider wearing warmer clothing like sweaters or socks indoors to reduce the need for heating, thereby decreasing energy usage.
  • Invest in energy-efficient appliances with A-grade ratings, as they consume less energy, leading to overall lower energy consumption in your household.
  • Be conscious of your shower time to conserve hot water, which in turn reduces energy usage and helps in cutting down on utility bills.

The Energy Saving Trust offers advice, information, and support in Ayrshire, aiding individuals, businesses, and organizations in reducing energy consumption, lowering bills, and cutting carbon emissions.

Yes, given that a significant proportion of heat loss occurs through uninsulated walls, proper insulation is essential for improving energy efficiency and reducing carbon emissions.

Our skilled team specializing in internal wall insulation services in Ayrshire prides itself on extensive training and holding all relevant industry certifications, including the esteemed PAS 2030 accreditation. This ensures that each project we undertake meets the highest standards, instilling confidence and trust in our services.

Securing a complimentary insulation grant in Ayrshire and the wider UK is a straightforward process, thanks to various schemes tailored to meet homeowners’ needs. Among these, the Energy Company Obligation 4 (ECO4) scheme stands out as one of the most prominent and accessible initiatives.

Supported by the government, the ECO4 scheme is a comprehensive program aimed at modernizing heating systems to combat carbon emissions and alleviate fuel poverty specifically in Ayrshire homes. It targets the least energy-efficient homes across Ayrshire and the broader UK, aiming to improve heating systems and overall energy efficiency.

Operating until March 2026, the ECO4 scheme places significant emphasis on enhancing energy efficiency, particularly in Ayrshire. Through collaboration with energy suppliers and local authorities, eligible households in Ayrshire are identified and provided with essential support and resources to upgrade their residences.

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