FREE Internal
Wall Insulation

Isle of Mull

Free Internal Wall Insulation Isle of Mull

Envirohomes Renewables, a leader in home renewable services in Scotland, recognizes the crucial role of internal wall insulation in enhancing energy efficiency and reducing energy bills. 

Specializing in internal wall insulation on the Isle of Mull, we offer fully funded insulation services through the Government’s ECO 4 scheme, particularly for low-income households.

Our team of skilled installers, accredited with industry standards like the PAS 2030 certification, ensures top-notch service delivery in every project across the Isle of Mull.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables is committed to assisting qualifying customers in obtaining and implementing home improvement enhancements via the ECO4 scheme. Focused predominantly on aiding low-income and vulnerable families, this initiative aligns with governmental goals to combat fuel poverty and advance towards carbon neutrality by the year 2050.
Here are the criteria needed to be eligible for this grant

ECO Scheme grant eligibility

    • Annual income below £19,720.
    • Homeowners, private tenants, or social housing beneficiaries.
    • Recipients of certain benefits, including 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?

Adopting internal wall insulation is a crucial approach to enhance a building’s energy efficiency, primarily by reducing the loss of heat through walls.

This method entails accurately installing insulating materials, such as rigid boards or mineral wool fibers, onto the internal faces of a building’s outer walls. This strategy is particularly beneficial for structures without cavity walls or in cases where external insulation application is impractical.

Creating a thermal barrier inside the building, internal wall insulation significantly improves indoor comfort while contributing to substantial energy savings over time. As a result, it stands out as a cost-effective and environmentally friendly solution for homeowners and property managers aiming to cultivate sustainable and energy-efficient spaces.

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 a method tailored for buildings with solid walls, focusing on insulating the interior walls.

  • This technique is highly effective in reducing heat loss, thereby enhancing the overall energy efficiency and comfort of the home.


  • The process usually involves the installation of materials like rigid foam boards or mineral wool onto the walls, which are then covered with plasterboard or similar finishing materials.


  • Choosing this method is especially beneficial for properties where preserving the external appearance is a key concern.

Cavity Wall insulation is well-suited for structures with a gap between dual wall layers.

  • This method involves drilling small openings in the outer wall and injecting insulating materials like foam or mineral wool into the cavity.


  • Effectively preventing heat from escaping through the walls, this approach maintains a warm and comfortable interior atmosphere in the house.


  • Its minimal impact on the property’s external appearance and quick installation process make this insulation technique a popular choice.

Solid wall insulating, is an external application mainly used for older buildings without cavity walls.

  • In this method, insulation is affixed to the building’s external walls, then covered with protective materials like render or cladding.


  • While this technique might alter the building’s external appearance, it significantly improves its thermal efficiency and energy performance.


  • This approach is particularly advantageous for older structures where internal insulation might be impractical due to spatial constraints.

How Does Internal Wall Insulation Work?

What Are The
Advantages and Disadvantages

Of Internal Wall Insulation?

Advantages of internal wall insulation

  • Suitable for many Isle of Mull properties.
  • Increased energy efficiency and comfort.
  • Lower carbon footprint and energy bills.

Disadvantages of internal wall insulation

  • Potential reduction in room space.
  • Disruption during installation.
  • Increased maintenance costs if not installed properly.
  • Risks of dampness and mold growth.

Note: It’s essential to use an approved installer, like Envirohomes Renewables, especially under schemes like ECO4.


Even if you are not receiving benefits, having a low-income household might still make you eligible for full funding for free insulation under the ECO4 scheme.

This grant is designed to enhance your home’s energy efficiency, which can lead to significant savings on heating costs. Therefore, lacking benefits does not necessarily exclude you from qualifying for a government insulation grant.

Homes constructed within the last 20 years are likely to have insulated walls, including other energy-saving features. To ascertain this, you can engage certified installers to conduct a borescope inspection, where a small aperture is made in an external wall to check whether the cavity is filled with insulation.

Beyond wall insulation, there are multiple strategies to cut down on your energy bills.

These include turning off unused lights, lowering your thermostat by a degree or two, wearing warmer clothing indoors, using energy-efficient appliances, and taking shorter showers to save on hot water consumption, among others.

The Energy Saving Trust in Isle of Mull, Scotland offers services and initiatives similar to those in other UK regions.

It provides guidance, information, and support to individuals, businesses, and organizations in Scotland, helping them reduce energy use, lower their bills, and cut down on carbon emissions.

Absolutely. Data indicates that up to 45% of heat can escape through uninsulated solid walls, and an additional 25% through an uninsulated roof.

This highlights the critical importance of proper wall insulation in maintaining energy efficiency in your home.


In Isle of Mull, Scotland, our dedicated team of internal wall insulation experts stands out for their unparalleled expertise and profound experience in the field. Possessing high-level qualifications, including the prestigious PAS 2030 accreditation, we ensure that every installation adheres to rigorous standards, offering our clients unparalleled reliability and trust.

Navigating the process of acquiring a free insulation grant in Scotland and the UK is streamlined, thanks to a variety of specialized schemes designed to meet the unique needs of homeowners. Among these, the Energy Company Obligation 4 (ECO4) scheme stands out as a significant and accessible initiative.

Supported by the government, the ECO4 scheme represents a comprehensive effort across the UK, concentrating on the refurbishment of heating systems to diminish carbon emissions and alleviate fuel poverty. It is particularly focused on boosting the heating efficiency of the least energy-efficient homes in the Isle of Mull and throughout the UK, with the goal of enhancing overall energy efficiency.

Set to run until March 2026, the ECO4 scheme underscores the importance of progressing in energy efficiency. Collaborating with energy suppliers and local authorities, the scheme is dedicated to identifying and aiding eligible households. This initiative enables residents of the Isle of Mull to make essential enhancements to their properties, significantly improving their energy usage and living conditions.

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