FREE Internal
Wall Insulation


Free Internal Wall Insulation Paisley

Envirohomes Renewables is renowned as Paisley’s foremost authority on internal wall insulation. As one of Scotland’s premier providers of home renewable services, we recognize the crucial role that internal wall insulation plays in enhancing energy efficiency and reducing energy expenditure.

Our primary focus is on delivering fully funded internal wall insulation services, complemented by a range of other home renewable solutions, specifically tailored to low-income households receiving benefits in Scotland. Through the Government’s ECO 4 scheme, we extend this fully funded service to eligible households, ensuring equitable access to energy-efficient solutions.

Backed by a team of highly trained internal wall insulation installers with esteemed industry accreditations, including the PAS 2030 certification, we guarantee the highest standards of quality and professionalism in every project we undertake.

Accessing a free insulation grant in Scotland and the UK is straightforward, with initiatives like the Energy Company Obligation 4 (ECO4) scheme leading the way. This government-backed program is dedicated to upgrading heating systems, reducing carbon emissions, alleviating fuel poverty, and enhancing the heating infrastructure of homes across Scotland and the UK.

Scheduled to continue until March 2026, the ECO4 scheme places significant emphasis on promoting energy efficiency. Through collaboration with energy suppliers and local authorities, it identifies and supports eligible households in Paisley and beyond, paving the way for a sustainable and energy-conscious future.

internal insulation

Who Is Eligible
For The Internal Wall Insulation Grant?

Envirohomes Renewables plays a vital role in aiding eligible individuals to access and execute various home improvement projects under the ECO4 initiative. Aligned with governmental objectives to combat fuel poverty and achieve carbon neutrality by 2050, this initiative strives to make sustainable living more accessible and achievable for everyone.
Here are the criteria needed to be eligible for this grant

ECO Scheme grant eligibility

  • People with an annual income of less than £19,720.


  • Homeowners, renters, or individuals residing in social housing.


  • People who receive specific benefits such as Child Benefit, Income Support, and others.


  • Individuals aged 60 and over who receive Pension Credit Benefits.


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

What Is Internal Wall Insulation?

Enhancing the energy efficiency of buildings is crucial, and internal wall insulation stands out as a highly effective strategy in achieving this goal. This method 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 building’s structure, internal wall insulation significantly reduces heat loss. This results in notable improvements in energy conservation and a consequent decrease in heating costs over time.

Internal wall insulation offers distinct advantages, particularly for properties that lack cavity walls or where cavity wall insulation installation is impractical. Additionally, this insulation method contributes to enhanced indoor temperature regulation, thereby increasing occupants’ comfort levels. Moreover, it has the potential to extend the lifespan of the building’s heating systems, making it a valuable investment in both energy efficiency and long-term building 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 designed with precision for properties featuring solid walls, with a primary focus on fortifying the insulation within the interior walls of the structure.

  • Insulation materials, usually varying from 60 mm to 100 mm in thickness, commonly consist of rigid insulation boards or mineral wool fibers.
  • Implementation may necessitate the elimination of current wall coverings to facilitate the efficient placement of insulation materials.
  • The resultant enhancement is evident within the property, potentially impacting room dimensions and visual aesthetics.
  • Relative to external wall insulation, internal wall insulation typically presents a more economical option for amplifying energy efficiency.

Cavity Wall insulation provides a customized solution for properties featuring cavity walls, characterized by an outer and inner wall separated by a cavity.

  • The insulation procedure initiates with precise drilling into the walls, facilitating the injection of insulation material.
  • Mineral wool or foam is introduced into the drilled holes, expanding to effectively fill the cavity space and bolster insulation.
  • Concealment of drilled holes is achieved using plaster or similar materials, preserving the property’s aesthetic appeal.
  • Cavity wall insulation significantly boosts heating efficiency, leading to substantial long-term energy cost savings.
  • Experience a swift installation process that minimizes disruption to homeowners or tenants, ensuring a seamless experience.
  • Cavity wall insulation provides a convenient solution with minimal disruption during installation, prioritizing homeowner comfort.

Solid Wall insulating offers a customized solution for older or solid-wall properties, addressing the imperative need to boost thermal efficiency. This method involves applying 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, especially those built before 1920, often lack wall cavities, making them prime candidates for solid wall insulation.

  • Solid wall insulation offers versatile application methods, including external cladding, rendering, or the installation of insulation boards. These varied approaches provide tailored solutions to accommodate different building structures.

  • By significantly improving energy efficiency and thermal regulation, solid wall insulation enhances the comfort levels of occupants within these buildings, creating a more pleasant living environment.

  • Notably, solid wall insulation preserves the integrity of interior living spaces and maintains the aesthetic appeal of properties, ensuring a seamless balance of functionality and visual attractiveness.

  • Solid wall insulation typically involves higher costs compared to internal insulation options, reflecting the additional materials and labor required for exterior application.

How Does Internal Wall Insulation Work?

What Are The
Advantages and Disadvantages

Of Internal Wall Insulation?

Advantages of internal wall insulation

  • Ideal for solid wall properties
  • Enhanced energy efficiency
  • Elevated warmth and comfort
  • Minimized carbon footprint
  • Enhanced property value
  • Facilitates financial support by decreasing energy demands

Disadvantages of internal wall insulation

  • Reduction of room space
  • Disruption experienced during the installation process
  • Potential costs involved if eligibility criteria for a free insulation grant are not met
  • Heightened maintenance expenses may arise from improper installation by untrained individuals
  • Risk of dampness and 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).


If your household earns a low income or receives benefits, you may be eligible for full funding through the ECO4 scheme to insulate your home for free.

This funding can make your home more energy-efficient, leading to lower heating expenses. And remember, even if you don’t receive benefits, you could still qualify for a government insulation grant.

If your residence was constructed within the last two decades, chances are the walls are already equipped with insulation, alongside other energy-saving features.

To verify this, seeking assistance from certified installers is advisable. These professionals can conduct a borescope inspection by making a small aperture in the exterior wall. Through this process, they can accurately ascertain whether the walls are void or filled with insulation material.

In addition to investing in wall insulation, there are various proactive steps you can implement to curtail your energy bills.

These include simple practices such as switching off lights when not in use, adjusting the thermostat by 1 or 2 degrees, embracing indoor attire like jumpers or socks for added warmth, transitioning to energy-efficient A-grade appliances, and adopting water-saving habits such as shorter showers. Every small adjustment contributes significantly to overall energy conservation.

The Energy Saving Trust operates in Paisley much like it does in other regions of the UK. It serves as a valuable resource offering guidance, information, and support to individuals, businesses, and organizations across Scotland.

By providing advice on reducing energy consumption, lowering energy bills, and mitigating carbon emissions, the Energy Saving Trust actively promotes sustainable living practices and environmental stewardship.

Absolutely. Statistics reveal that as much as 45% of heat loss can occur through uninsulated solid walls, with an additional 25% lost through uninsulated roofs.

These figures underscore the critical importance of properly insulating your walls. By investing in wall insulation, you not only enhance energy efficiency but also create a more comfortable and sustainable living environment for yourself and future generations.

In Paisley, our devoted team of experts stands out for delivering exceptional internal wall insulation services, backed by extensive knowledge and practical proficiency. Equipped with comprehensive training and industry accolades, including the prestigious PAS 2030 certification, we maintain unwavering standards to ensure impeccable craftsmanship, instilling trust and dependability in our offerings.

Accessing free insulation grants in Scotland and across the UK is streamlined through tailored programs designed to cater to homeowners’ requirements. Among these initiatives, the Energy Company Obligation 4 (ECO4) scheme emerges as a prominent and accessible avenue.

Endorsed by governmental bodies, the ECO4 scheme signifies a collective endeavor 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 Paisley, Scotland, and beyond, its primary goal is to enhance overall energy efficiency standards.

Scheduled to run until March 2026, the ECO4 scheme underscores the importance of advancing energy efficiency practices. Through collaborative partnerships with energy suppliers and local authorities, eligible households in Paisley are identified and provided with crucial assistance and resources to facilitate home upgrades, thus contributing to a more sustainable future.

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