FREE Internal
Wall Insulation


Free Internal Wall Insulation Glenrothes

Envirohomes Renewables stands out as the leading expert in internal wall insulation across Glenrothes, Scotland. As one of the premier providers of home renewable solutions in Scotland, we recognize the pivotal role of internal wall insulation in enhancing energy efficiency and reducing energy costs for homeowners. Our primary focus lies in offering fully funded internal wall insulation services, alongside other home renewable solutions, specifically catering to low-income households receiving benefits in Scotland.

This service is made possible through the Government’s ECO 4 scheme, underscoring our commitment to accessibility and sustainability in home improvement endeavors. Our team of extensively trained internal wall insulation installers holds industry accreditations, including the prestigious PAS 2030 certification, ensuring the highest standards of service delivery.

Accessing free insulation grants in Scotland and the UK is facilitated through various schemes, with the Energy Company Obligation 4 (ECO4) scheme standing as one of the largest initiatives currently in operation. This government-backed program operates with a dual focus on reducing carbon emissions by upgrading heating systems and addressing fuel poverty by enhancing the energy efficiency of homes across Scotland and the wider UK.

Scheduled to continue until March 2026, the ECO4 scheme collaborates with energy suppliers and local authorities to identify eligible households and provide them with essential home improvements.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables assists eligible individuals in securing and implementing a range of home improvement upgrades through the ECO4 scheme, aligning with governmental objectives 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 annual income below £19,720.
    • Homeowners, private tenants, or individuals residing in social housing.
    • Recipients of certain benefits such as Child Benefit, Income Support, etc.
    • Pensioners aged 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 constitutes a fundamental home improvement technique aimed at reducing heat loss and enhancing energy efficiency.

This process involves the addition of insulation materials, typically 60 mm to 100 mm in thickness, to the internal surfaces of external walls within a property. These materials, commonly rigid insulation boards comprising plasterboard or mineral wool fibers, serve to create a thermal barrier, thereby reducing the property’s overall heat loss.

Notably, internal wall insulation presents a cost-effective alternative to external wall insulation, particularly suitable for properties lacking cavity walls or where external insulation may not be feasible.

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 tailored for properties with solid walls, focusing on insulating the interior surfaces of the building.

  • Insulation materials typically range from 60 mm to 100 mm in thickness, comprising rigid boards or mineral wool fibers.


  • Installation may necessitate the removal of existing wall coverings, potentially impacting room sizes and aesthetics.


  • It offers a more cost-effective solution compared to external wall insulation.

Cavity Wall insulation targets properties with cavity walls, consisting of two layers with a gap between them.

  • Drilling of holes: The process commences with drilling holes in the walls to allow for the injection of cavity wall insulation materials.
  • Material injection: Insulation materials, such as mineral wool or foam, are injected into the drilled holes, expanding naturally to fill the entire cavity space.
  • Hole covering: Once insulation is injected, meticulous care is taken to cover access holes with plaster or similar material, preserving the property’s aesthetic appeal.
  • Heating efficiency: Cavity wall insulation plays a significant role in enhancing heating efficiency and subsequently reducing energy bills over time.
  • Quick installation: The installation process for cavity wall insulation is typically swift, causing minimal disruption to homeowners and tenants.
  • Minimal disruption: Due to its efficiency, cavity wall insulation is a convenient choice for energy-efficient home upgrades, causing minimal disturbance during installation.

Solid wall insulating, is designed for older or solid-wall properties, involving the application of insulation to the exterior of the building.

  • Structures constructed before 1920 typically lack cavities in their walls, making them ideal candidates for solid wall insulation.
  • Solid wall insulation offers various application techniques, such as external cladding, rendering, or installing insulation boards, allowing for adaptable implementation.
  • This method effectively enhances energy efficiency and thermal regulation within solid wall properties, improving comfort for occupants.
  • Solid wall insulation preserves interior living spaces and maintains the property’s aesthetic appeal, ensuring functionality and visual attractiveness.
  • It’s important to note that solid wall insulation often involves higher costs compared to internal insulation methods, requiring homeowners to plan their finances carefully before proceeding with this upgrade.

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, addressing heat loss effectively.
  • Improves energy efficiency, leading to reduced heating costs.
  • Enhances warmth and comfort within the property.
  • Contributes to reducing carbon footprint and environmental impact.

Disadvantages of internal wall insulation

  • Potential reduction in room space due to insulation thickness.
  • Disruption during installation, requiring temporary relocation of furnishings.
  • Costs may apply if eligibility criteria for free insulation grants are not met.
  • Incorrect installation may lead to maintenance issues such as dampness or 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).


While eligibility for free insulation grants primarily targets low-income households or those receiving benefits, individuals with modest incomes may still qualify for support through governmental schemes.

We recommend consulting with approved installers to explore available options and determine eligibility criteria.

Homes constructed within the past two decades likely incorporate cavity wall insulation as part of standard energy efficiency measures.

To ascertain the presence of insulation, certified installers can conduct a borescope inspection, providing definitive insights into the property’s insulation status.

In addition to wall insulation, several measures can help reduce energy consumption and lower utility bills.

These include adopting energy-efficient practices such as minimizing electrical usage, adjusting thermostat settings, utilizing energy-efficient appliances, and practicing water conservation habits.

The Energy Saving Trust operates as a resource hub, offering guidance, information, and support to individuals and businesses seeking to enhance energy efficiency and reduce carbon emissions. In Glenrothes, the Energy Saving Trust plays a pivotal role in promoting sustainable energy practices and facilitating access to energy-saving initiatives.

Wall insulation serves as a critical component in optimizing energy efficiency and reducing heat loss within homes.

With significant proportions of heat escaping through uninsulated walls, proper insulation is essential for maintaining thermal comfort, minimizing energy consumption, and realizing long-term cost savings.

Our dedicated team of experts specializing in internal wall insulation in Glenrothes brings a wealth of knowledge and experience to every project. With extensive training and industry certifications such as the prestigious PAS 2030 accreditation, we ensure that each job meets rigorous standards, instilling trust and reliability in our services.

Securing a complimentary insulation grant in Scotland and the UK is a seamless process, thanks to various tailored schemes designed to meet homeowners’ needs. Among these, the Energy Company Obligation 4 (ECO4) scheme stands as a prominent and accessible program.

Backed by the government, the ECO4 scheme represents a comprehensive initiative aimed at modernizing heating systems to combat carbon emissions and alleviate fuel poverty. Specifically targeting the enhancement of heating systems in the least energy-efficient homes across Scotland and the wider UK, its primary objective is to improve overall energy efficiency.

Operating until March 2026, the ECO4 scheme prioritizes advancements in energy efficiency. Through partnerships with energy suppliers and local authorities, eligible households are identified and provided with essential support and resources to facilitate upgrades to their residences.

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