FREE Internal
Wall Insulation


Free Internal Wall Insulation Perthshire

EnviroHomes Renewables stands as the quintessential authority in Perthshire, offering cutting-edge solutions for internal wall insulation. Within the realm of renewable home services, EnviroHomes Renewables is committed to revolutionizing the Scottish landscape, fully recognizing the pivotal role internal wall insulation plays in augmenting energy efficiency and curbing energy expenditures.

Our central mission revolves around the provision of fully funded internal wall insulation services, meticulously tailored to meet the needs of low-income households benefiting from various assistance programs across Perthshire and the wider UK. Through initiatives such as the Government’s ECO 4 scheme, we extend this invaluable service to eligible households, ensuring equitable access to energy-saving solutions across the region.

Bolstered by a team of highly skilled internal wall insulation experts, each boasting prestigious industry accreditations, including the esteemed PAS 2030 certification, we guarantee unrivaled quality and professionalism in every project we undertake.

The process of securing a free insulation grant in Perthshire and beyond has been streamlined, courtesy of initiatives like the Energy Company Obligation 4 (ECO4) scheme. This government-backed program, slated to run until March 2026, is dedicated to the modernization of heating systems, reduction of carbon emissions, alleviation of fuel poverty, and overall enhancement of home heating infrastructure across Scotland and the broader UK.

With a strong emphasis on promoting energy efficiency, the ECO4 scheme collaborates closely with energy suppliers and local authorities to identify and support eligible households in Perthshire, thereby laying the groundwork for a more sustainable and energy-conscious future.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables plays a key role in helping qualified individuals participate in various home improvement projects as part of the ECO4 program. Aligned with government efforts to tackle fuel poverty and achieve carbon neutrality by 2050, this program strives to make sustainable living accessible to all.
Here are the criteria needed to be eligible for this grant

ECO Scheme grant eligibility

  • People earning less than £19,720 per year.


  • Those living in a house, regardless of whether they own it, rent it, or live in social housing.


  • Individuals receiving specific benefits such as Child Benefit and Income Support.


  • Seniors aged 60 or older who receive Pension Credit.


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

What Is Internal Wall Insulation?

Internal wall insulation has become a key method for enhancing energy efficiency in buildings. This technique involves applying insulation materials like rigid boards or mineral wool fibers to the inside of exterior walls. These materials are typically 60 to 100 mm thick.

Adding this extra layer of insulation inside the building helps significantly reduce heat loss. This not only improves energy conservation but also cuts down on heating expenses over the long run.

This insulation approach is especially beneficial for buildings lacking cavity walls or where cavity wall insulation isn’t an option. It also improves indoor temperature regulation, boosting comfort for those inside. Furthermore, internal wall insulation can prolong the life of a building’s heating systems, representing a smart investment in energy efficiency and the maintenance of the building over time.

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 solid wall properties, focusing on insulating interior walls, impacting room sizes and aesthetics.

  • Insulation materials used for internal wall insulation are generally between 60 mm and 100 mm thick and typically consist of either rigid boards or mineral wool fibers.
  • The installation process may involve the removal of current wall coverings to ensure the insulation is placed correctly.
  • This enhancement can have visible effects within the property, possibly altering the dimensions and appearance of rooms.
  • Compared to external wall insulation, internal wall insulation is often a more budget-friendly option for boosting energy efficiency.

Cavity Wall insulation is suited for properties with cavity walls, enhancing heating efficiency with minimal disruption.

  • Drilling precise holes into the walls marks the start of the insulation process.
  • Insulation material, such as mineral wool or foam, is injected into these holes, expanding to fill the cavity space effectively.
  • The holes are then seamlessly sealed with plaster or a similar substance, preserving the appearance of the property.
  • This insulation method greatly enhances heating efficiency, leading to significant and enduring reductions in energy costs.
  • The installation process is quick and causes minimal disturbance to homeowners or tenants.
  • Cavity wall insulation is designed for convenience, with minimal disruption during installation, focusing on the comfort of the homeowner.

Solid Wall insulating is designed for older builds devoid of cavity walls, applied externally to improve energy efficiency without altering interior spaces.

  • Older buildings, especially pre-1920s, often have solid walls without cavities, making them suitable for solid wall insulation.
  • Solid wall insulation can be applied using various methods like external cladding, rendering, or insulation boards, tailored to different building styles.
  • This insulation improves energy efficiency and thermal control, enhancing occupant comfort and creating a more pleasant living environment.
  • It preserves the building’s interior integrity and aesthetic appeal, ensuring a balance between functionality and appearance.
  • Solid wall insulation is generally more expensive than internal insulation due to extra material and labor costs for external application.

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
  • Financial support through energy savings

Disadvantages of internal wall insulation

  • Reduction in room space
  • Installation disruption
  • Potential costs for ineligible individuals
  • Maintenance issues if not installed correctly
  • Risk of dampness/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).


Eligibility extends to low-income households regardless of benefit status, facilitating energy efficiency improvements.

Consult certified installers for a borescope inspection, particularly if the house was built within the past two decades.

Beyond insulation, energy-saving practices include optimizing appliance usage and regulating thermostat settings.

The Energy Saving Trust offers advisory services and initiatives aimed at reducing energy consumption and carbon emissions in Perthshire.

Yes, given the substantial heat loss potential through uninsulated walls, proper insulation is imperative for energy efficiency.

In Perthshire, Scotland, our team specializes in providing top-notch internal wall insulation services. With our extensive experience and qualifications, including PAS 2030 certification, we guarantee exceptional quality and client satisfaction.

We also guide homeowners through various insulation grant programs available in Scotland and the UK. A key program is the Energy Company Obligation 4 (ECO4) scheme, which offers accessible insulation options.

Supported by the government, the ECO4 scheme aims to upgrade heating systems, lower carbon emissions, and alleviate fuel poverty. It focuses on improving energy efficiency in the least energy-efficient homes in Perthshire and beyond.

Valid until March 2026, the ECO4 scheme emphasizes the importance of enhancing energy efficiency. We collaborate with energy suppliers and local authorities to help eligible households in Perthshire make their homes more energy-efficient, contributing to a greener future.

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