FREE Internal
Wall Insulation


Free Internal Wall Insulation Kirkcaldy

Envirohomes Renewables stands out as the leading authority on internal wall insulation in Kirkcaldy. As one of Scotland’s foremost providers of renewable home services, we deeply understand the critical role that internal wall insulation plays in enhancing energy efficiency and cutting down on energy costs.

Our focus is squarely on delivering fully funded internal wall insulation services, alongside a range of other renewable home solutions, specifically tailored to low-income households benefiting from the Government’s ECO 4 scheme in Kirkcaldy and across Scotland.

Backed by a team of highly skilled internal wall insulation installers holding esteemed industry accreditations, including the PAS 2030 certification, we guarantee that every project is executed to the highest standards of quality and professionalism.

Accessing a free insulation grant in Kirkcaldy and across the UK is made simple through schemes like the Energy Company Obligation 4 (ECO4) scheme. This government-backed initiative is designed to upgrade heating systems, reduce carbon emissions, address fuel poverty, and enhance the heating infrastructure of the least energy-efficient homes throughout Scotland and the UK.

Scheduled to continue until March 2026, the ECO4 scheme places significant emphasis on promoting energy efficiency. It operates through collaborative efforts with energy suppliers and local authorities to identify and support eligible households in Kirkcaldy and beyond, ensuring a sustainable and energy-conscious future for all.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables plays a pivotal role in aiding qualified individuals to avail and execute various home enhancement projects under the ECO4 initiative. This initiative is in harmony with governmental aims directed towards tackling fuel poverty and attaining 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, tenants, or occupants of social housing.


  • Recipients of specified benefits such as Child Benefit, Income Support, among others.


  • Individuals aged 60 and older receiving Pension Credit Benefits.


  • Properties with an Energy Performance Certificate (EPC) rating of D or lower.

What Is Internal Wall Insulation?

Internal wall insulation stands as a remarkably effective strategy for enhancing the energy efficiency of buildings. It entails the application of insulation materials, such as rigid insulation boards or mineral wool fibers, typically ranging from 60 mm to 100 mm in thickness, onto the inner surfaces of exterior walls.

By introducing an additional thermal barrier within the structural framework, this method significantly reduces heat loss, resulting in substantial enhancements in energy conservation and decreased heating costs.

This insulation approach offers notable advantages, especially for properties lacking cavity walls or where cavity wall insulation installation is impractical. Additionally, internal wall insulation contributes to better indoor temperature regulation, thereby improving occupants’ comfort and potentially extending the lifespan of the building’s heating systems.

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, concentrating on insulating the interior walls of the building.

  • Insulation materials, typically 60 mm – 100 mm thick, commonly consist of rigid insulation boards or mineral wool fibres.
  • Installation may necessitate the removal of existing wall coverings to facilitate the placement of insulation materials.
  • The outcome is observable within the property, which could potentially impact room sizes and aesthetics.
  • Comparatively, internal wall insulation tends to be more cost-effective than external wall insulation

Cavity Wall insulation serves as a tailored solution for properties endowed with cavity walls, which comprise two layers: an outer and an inner wall separated by a cavity.

  • Drilling Process: Initiate the insulation process by drilling holes into the walls to accommodate the injection of insulation material.
  • Material Injection: Introduce mineral wool or foam into the drilled holes, allowing for expansion to effectively fill the cavity space.
  • Covering Access Points: Conceal the drilled holes using plaster or similar materials to preserve the aesthetic integrity of the property.
  • Enhanced Heating Efficiency: Cavity wall insulation enhances heating efficiency, leading to reduced long-term energy costs.
  • Efficient Installation: Benefit from a swift installation process that minimizes disruption to homeowners or tenants.
  • Minimal Disturbance: Experience a convenient solution with cavity wall insulation, which ensures minimal disruption during the installation phase.

Solid Wall insulating serves as a tailored solution for older or solid-wall properties, addressing the need to enhance thermal efficiency. This method encompasses the application of insulation materials to the exterior of the building, establishing a protective barrier against heat loss and elevating the overall energy performance of the structure.

  • Older buildings, particularly those constructed prior to 1920, often lack wall cavities, rendering them suitable candidates for solid wall insulation.
  • Solid wall insulation presents flexible application methods, including external cladding, rendering, or installation of insulation boards. These diverse approaches offer adaptable solutions tailored to various building structures.
  • By effectively improving energy efficiency and thermal regulation, solid wall insulation significantly enhances the comfort levels of occupants within these buildings.
  • Notably, solid wall insulation preserves the integrity of interior living spaces and upholds the aesthetic appeal of properties, ensuring a harmonious blend of functionality and visual attractiveness.
  • Solid wall insulation typically entails higher costs 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

  • This solution significantly boosts energy efficiency, leading to reduced energy usage and lower utility bills.

  • Its outstanding insulation capabilities create a warmer living space, particularly in colder months.

  • By minimizing heat loss and improving thermal efficiency, it reduces the property’s carbon emissions, promoting environmental sustainability.

  • Installing this solution enhances the property’s value and improves comfort for occupants.

  • Additionally, it qualifies for financial incentives and support programs promoting sustainable living.

Disadvantages of internal wall insulation

  • Loss of living space.
  • Interruptions during the installation phase.
  • Potential expenses if eligibility for a complimentary insulation grant is not met.
  • Elevated maintenance expenses may arise from improper installation by certified technicians.
  • Risk of moisture accumulation and mold development.

Note: Please be aware that approval for any interior wall insulation grant or home improvement funding necessitates management by an authorized installer, like Envirohomes Renewables, within the parameters of the designated scheme, such as the ECO4 scheme.


If your household falls within the bracket of low income or receives benefits, you might be eligible for comprehensive funding through initiatives such as ECO4.

However, it’s essential to note that even without benefiting directly from such schemes, you may still meet the criteria for government grants.

It’s probable that houses constructed in the past two decades are already insulated, yet verifying this can be achieved through a borescope inspection conducted by certified professionals.

In addition to insulation, simple energy-saving practices like turning off lights, adjusting thermostats, and using energy-efficient appliances can significantly reduce energy consumption and lower utility bills.


The Energy Saving Trust provides valuable guidance and assistance in Kirkcaldy to help individuals and households minimize energy usage, decrease utility expenses, and mitigate carbon emissions.

Certainly! Uninsulated walls contribute to substantial heat loss, underscoring the critical importance of effective insulation measures

In Kirkcaldy, our team of dedicated specialists specializing in internal wall insulation brings extensive expertise and practical experience to every project. With thorough training and industry recognition, including the prestigious PAS 2030 certification, we uphold rigorous standards to deliver exceptional workmanship, fostering trust and assurance in our services.

Obtaining a free insulation grant in Scotland, as well as across the UK, is a streamlined process, thanks to tailored schemes designed to meet the needs of homeowners. Among these initiatives, the Energy Company Obligation 4 (ECO4) scheme stands out as a prominent and accessible program.

Endorsed by governmental authorities, the ECO4 scheme represents a concerted effort aimed at modernizing heating systems to combat carbon emissions and alleviate fuel poverty. With a specific focus on upgrading heating systems in the least energy-efficient homes throughout Kirkcaldy, Scotland, and the wider UK, its primary objective is to enhance overall energy efficiency.

Continuing until March 2026, the ECO4 scheme prioritizes advancements in energy efficiency. Through collaboration with energy suppliers and local authorities, eligible households in Kirkcaldy are identified and provided with essential support and resources to facilitate home upgrades, paving the way for a more sustainable future.

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