FREE Internal
Wall Insulation


Free Internal Wall Insulation Borders

Envirohomes Renewables leads the way in providing expert internal wall insulation solutions in the Borders region. As a prominent renewable energy service provider in Scotland, we recognize the pivotal role of internal wall insulation in enhancing home energy efficiency and substantially reducing energy expenditure.

Our primary focus lies in delivering fully funded internal wall insulation services, particularly tailored to assist low-income households in the Borders, through the Government’s progressive ECO 4 scheme.

In the Borders area, our team of internal wall insulation specialists stands out for their exceptional expertise and professionalism. Each member holds accreditation with the prestigious PAS 2030 certification, ensuring the highest quality standards in every service we deliver.

The path to securing a free insulation grant in the Borders has become more accessible and streamlined, thanks to initiatives such as the Energy Company Obligation 4 (ECO4) scheme. This crucial government-backed program, slated to run until March 2026, is dedicated to overhauling heating systems, curbing carbon emissions, addressing fuel poverty, and enhancing overall heating efficiency in homes throughout Scotland and the UK.

The ECO4 scheme, with its steadfast commitment to promoting energy efficiency, collaborates closely with energy suppliers and local authorities in the Borders. This collaborative approach plays a pivotal role in identifying eligible households for support, laying the groundwork for a greener, more energy-efficient future in the region.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables assists eligible households in accessing grants for home improvements under the ECO4 scheme. This initiative primarily targets low-income families and individuals, aligning with government 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 those receiving social housing benefits.


  • Recipients of specific benefits such as Child Benefit or Income Support.


  • Pensioners over 60 who receive Pension Credit Benefits.


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

What Is Internal Wall Insulation?

Internal wall insulation has become a pivotal strategy for enhancing the energy efficiency of buildings. This technique involves affixing insulation materials, such as rigid boards or mineral wool fibers, to the inner surfaces of external walls, typically ranging between 60 and 100 mm in thickness.

By incorporating this additional insulation layer within the structure, there is a notable reduction in heat loss. This not only improves energy conservation but also leads to significant savings in heating expenses over time.

Especially beneficial for buildings lacking cavity walls or where cavity wall insulation isn’t feasible, internal wall insulation plays a vital role in stabilizing indoor temperatures, thereby increasing occupants’ comfort levels. Furthermore, it can prolong the lifespan of a building’s heating systems, making it a prudent investment for both energy efficiency and long-term maintenance.

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 specifically designed for solid wall properties, focusing on insulating interior walls while considering the impact on room sizes and aesthetics.

  • Insulation materials used for internal wall insulation typically range between 60 mm and 100 mm in thickness and commonly consist of rigid boards or mineral wool fibers.
  • During the installation process, it may be necessary to remove existing wall coverings to ensure proper placement of the insulation.
  • This enhancement can visibly affect the property’s interior, potentially altering room dimensions and overall appearance.
  • Compared to external wall insulation, internal wall insulation often presents a more cost-effective option for improving energy efficiency.

Cavity Wall insulation is well-suited for properties with cavity walls, aiming to enhance heating efficiency while causing minimal disruption.

  • The insulation process begins with precise drilling into the walls to create access points.
  • Insulation material, such as mineral wool or foam, is then injected into these holes, expanding to fill the cavity space effectively.
  • Subsequently, the holes are seamlessly sealed with plaster or similar materials to maintain the property’s appearance.
  • This insulation method significantly improves heating efficiency, resulting in substantial and long-lasting reductions in energy costs.
  • The installation process is quick and minimally disruptive to homeowners or tenants, prioritizing convenience and comfort.

Solid Wall insulating is tailored for older builds lacking cavity walls, applied externally to enhance energy efficiency without altering interior spaces.

  • Older buildings, particularly those constructed before the 1920s, often feature solid walls without cavities, making them suitable candidates for solid wall insulation.
  • Solid wall insulation can be applied using various methods such as external cladding, rendering, or insulation boards, adapted to different architectural styles.
  • This insulation solution improves energy efficiency and thermal control, enhancing occupant comfort and creating a more pleasant indoor environment.
  • It preserves the integrity and aesthetic appeal of the building’s interior, striking a balance between functionality and visual appeal.
  • Although solid wall insulation tends to be more expensive than internal insulation due to additional material and labor costs for external application, it offers significant long-term benefits in energy savings and comfort.

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.
  • Potential financial support through reduced energy costs.

Disadvantages of internal wall insulation

  • Reduced room space.
  • Disruption during installation.
  • Potential costs if not eligible for grants.
  • Increased maintenance if not installed correctly.
  • Risk of dampness/mould growth.

Note: Approval for any interior wall insulation grant or home improvement funding requires management by an approved installer (e.g., Envirohomes Renewables) under specific schemes (e.g., the ECO4 scheme).


Even if you don’t receive benefits, you may still qualify for full funding through the ECO4 scheme if your household has a low income. This funding can significantly improve energy efficiency and reduce heating expenses.

Consult certified installers for a borescope inspection, especially if your home was built in the last 20 years.

They can determine if your walls are insulated by making a small hole in the exterior wall.

Aside from insulation, energy-saving measures include using energy-efficient appliances, reducing thermostat settings, and minimizing hot water usage.

The Energy Saving Trust provides advice and support in Borders, Scotland to help individuals and businesses reduce energy consumption, lower bills, and cut carbon emissions.

Yes, as significant heat loss occurs through uninsulated walls, highlighting the importance of proper insulation.

By prioritizing energy efficiency and ensuring eligibility for grants, homeowners in Borders can benefit from internal wall insulation.

In Borders, Scotland, our team specializes in delivering top-tier internal wall insulation services. With our extensive experience and credentials, including PAS 2030 certification, we guarantee exceptional quality and utmost customer satisfaction.

We also assist homeowners in navigating various insulation grant programs available in Scotland and the broader UK. A notable initiative is the Energy Company Obligation 4 (ECO4) scheme, which offers accessible insulation solutions.

Supported by the government, the ECO4 scheme aims to upgrade heating systems, reduce carbon emissions, and tackle fuel poverty. Its primary focus is on improving energy efficiency in the least efficient homes across Borders and beyond.

Operating until March 2026, the ECO4 scheme emphasizes the importance of enhancing energy efficiency. We collaborate closely with energy providers and local authorities to support eligible households in Borders in enhancing their homes’ energy efficiency, contributing to a more sustainable future.

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