FREE Internal
Wall Insulation


Free Internal Wall Insulation Ayr

Envirohomes Renewables stands out as Ayr’s premier internal wall insulation provider. Recognized as a leading home renewable energy service in Scotland, we prioritize the significance of internal wall insulation in enhancing energy efficiency and reducing energy costs for homeowners.

Our focus lies in offering fully funded internal wall insulation services alongside other renewable energy solutions to low-income households in Ayr through the Government’s ECO 4 scheme. 

With our team of highly skilled installers holding industry accreditations including the PAS 2030 certification, we ensure all projects are executed to the highest standards.

Securing a free insulation grant in Scotland and the UK is readily achievable. Presently, the Energy Company Obligation 4 (ECO4) scheme stands as one of the largest initiatives facilitating this.

This government-backed program aims at upgrading heating systems to cut down carbon emissions, while also addressing fuel poverty and improving heating efficiency in homes across Scotland and the wider UK.

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

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables assists eligible customers in accessing and installing various home improvement upgrades through the ECO4 scheme. Primarily targeting low-income and vulnerable households, the scheme aligns with the government's commitments to combat 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 income below £19,720 per annum.
    • Homeowners, private tenants, or recipients of social housing benefits.
    • Individuals receiving specific benefits such as Child Benefit, Income Support, etc.
    • Pensioners aged over 60 who receive Pension Credit Benefits.
    • Homes with an Energy Performance Certificate (EPC) rating of D or lower.

What Is Internal Wall Insulation?

Internal wall insulation represents a holistic strategy aimed at enhancing a property’s energy efficiency. It involves the integration of insulation materials, typically ranging from 60mm to 100mm in thickness, onto the interior surfaces of external walls. The primary goal of this process is to significantly diminish heat loss within the premises.

This technique proves particularly advantageous for properties lacking cavity walls or where the installation of external insulation is not feasible. By implementing internal wall insulation, homeowners can establish a robust thermal barrier within their living spaces, effectively reducing heat transfer and bolstering overall energy conservation efforts. This approach not only fosters a more comfortable indoor environment but also facilitates substantial 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 focuses on insulating the interior walls of properties with solid walls:

    • Common insulating materials used are rigid insulation boards or mineral wool fibers, typically ranging from 60 mm to 100 mm in thickness.
    • Installation might require removing existing wall coverings to facilitate the placement of insulation materials.
    • The outcome of internal wall insulation is apparent within the property’s interior, which could impact room sizes and overall aesthetics.
    • Despite potential aesthetic implications, internal wall insulation is often more cost-effective than opting for external wall insulation.

Cavity Wall insulation is a crucial solution tailored for properties featuring two layers of walls separated by a cavity. This method serves to effectively trap heat indoors, thereby promoting energy conservation and enhancing overall energy efficiency.

  • The insulation process typically commences with the drilling of holes into the walls, facilitating the injection of cavity wall insulation materials such as mineral wool or foam.
  • Materials expand upon injection, filling the cavity for optimal insulation.
  • Access holes are concealed with plaster for seamless integration, preserving aesthetics.
  • Enhanced heating efficiency, reduced energy costs, and improved overall energy performance.
  • Minimal disruption for homeowners and tenants due to quick installation process.

Solid wall insulating, is specifically designed for older or solid wall properties, focusing on enhancing thermal efficiency through external application. This method is ideal for buildings that lack cavity walls, effectively minimizing heat loss and enhancing overall energy performance.

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


Solid wall insulation may involve higher initial expenses compared to internal alternatives.

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 specifically tailored for solid wall properties, offering an ideal solution for enhancing energy efficiency.
  • One of its primary benefits is its ability to effectively retain heat within the home, thereby improving overall warmth and comfort levels for occupants.
  • Beyond comfort, internal wall insulation plays a proactive role in reducing the carbon footprint of a property by minimizing heat loss.
  • Potential increase in the market value of a home post-installation, as energy-efficient features are often sought after by buyers.
  • From a financial perspective, internal wall insulation provides relief by reducing energy consumption and associated expenses, leading to long-term savings for homeowners.

Disadvantages of internal wall insulation

  • Internal wall insulation can shrink available space, impacting room layout and functionality.
  • Expect noise, dust, and temporary relocation of belongings.
  • Ineligible homeowners may face expenses for materials and installation.
  • Poor installation can lead to future maintenance needs and repair costs.
  • Improper insulation may trap moisture, fostering 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).


Households with low income or those receiving benefits are likely eligible for full funding through the ECO4 scheme.

This funding aims to improve energy efficiency and reduce heating expenses, extending eligibility beyond benefit recipients.

Homes built in the last 20 years likely have insulated walls.

Certified installers can conduct borescope inspections to confirm insulation presence by making a small hole in the exterior wall.

Numerous strategies can help cut down on energy expenses:

  • Practice energy-saving habits like switching off lights when not in use to decrease electricity usage.

    Make minor adjustments to your thermostat, lowering it by a degree or two to conserve energy while maintaining comfort levels.

    Opt for warmer clothing like sweaters or socks indoors to lessen reliance on heating systems.

    Upgrade to energy-efficient appliances that boast A-grade ratings to reduce overall energy consumption at home.

    Be mindful of your shower duration to conserve hot water, ultimately lowering energy usage and utility bills.


The Energy Saving Trust offers advice, information, and support to individuals, businesses, and organizations in Ayr to reduce energy consumption, lower bills, and cut carbon emissions.

Yes, uninsulated walls can account for significant heat loss. Proper insulation is crucial for energy efficiency and reducing heating costs.

Our proficient team specializing in internal wall insulation services in Ayr boasts extensive training and holds all relevant industry certifications, including the prestigious PAS 2030 accreditation. This ensures that every project we undertake meets the highest standards, instilling confidence and trust in our services.

Obtaining a complimentary insulation grant in Scotland and the 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. It specifically targets the least energy-efficient homes across Scotland and the wider UK, aiming to improve heating systems and overall energy efficiency.

Operating until March 2026, the ECO4 scheme places significant emphasis on enhancing energy efficiency. Through collaboration with energy suppliers and local authorities, eligible households 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.
Company No: SC708370. VAT No:396823742