Solid Wall Insulation

If your home was built before the 1920s, there is a good chance it has solid walls. These types of walls allow heat to escape much faster than modern cavity walls, which means your home could be losing a significant amount of warmth every day. As a result, heating your property can become expensive, and rooms may feel cold or draughty even with the heating on.

Installing solid wall insulation is one of the most effective ways to reduce heat loss and improve comfort in your home. It provides a long-lasting solution that helps lower your energy bills, maintain consistent indoor temperatures, and reduce your carbon footprint.

What Is Solid Wall Insulation?

Solid wall insulation involves adding a layer of insulating material to either the inside or outside of your property’s walls. This layer acts as a thermal barrier, reducing the amount of heat that escapes through the walls while keeping your home warmer for longer.

Many traditional homes in the UK were built with solid walls rather than cavity walls. Cavity walls have an air gap between two layers of brickwork that can be filled with insulation, but solid walls are a single layer of solid masonry, which transfers heat more easily.

By applying insulation to solid walls, homeowners can:

• Reduce heat loss by up to 35 percent.
• Maintain a comfortable temperature throughout the year.
• Improve the home’s energy efficiency rating.
• Lower heating bills and reduce CO₂ emissions.

The insulation materials used are typically high-performance products such as rigid foam boards, mineral wool, or external render systems. These materials are designed to last for decades, offering durable and effective thermal protection for your property.

Types of Solid Wall Insulation

There are two main ways to insulate solid walls: external wall insulation and internal wall insulation. Both provide significant energy savings, and the right option will depend on your property type, accessibility, and personal preferences.

External Wall Insulation (EWI)

External wall insulation involves fixing insulation boards to the outside of your home. These are then covered with a weatherproof render or cladding to protect the insulation and improve the home’s appearance.

Key benefits of external wall insulation:

• Ideal for homes where outside access is easy.
• Helps protect the building structure from weather damage.
• Improves the external look of your property.
• Does not reduce the internal room size.
• Provides soundproofing and better air tightness.

External wall insulation is particularly effective for detached and semi-detached homes. It can dramatically improve warmth and comfort while also giving your property a fresh, modern appearance.

Internal Wall Insulation (IWI)

Internal wall insulation involves adding insulation boards or mineral wool panels to the inside of the property’s external walls. It is then covered with plasterboard and redecorated to match your existing interior.

Key benefits of internal wall insulation:

• Suitable for homes where the exterior must remain unchanged, such as listed buildings or properties in conservation areas.
• Improves warmth and comfort while keeping the traditional look of your home’s exterior.
• Offers excellent thermal performance and energy savings.

While internal insulation slightly reduces the size of each room, the long-term savings and comfort improvements are well worth it. Our assessors will help you choose the best method based on your property’s structure and individual needs.

Why Solid Wall Insulation Is Important

Homes with solid walls can lose up to one-third of their heat through uninsulated brickwork. This wasted energy not only increases your heating bills but also makes it difficult to maintain comfortable temperatures throughout your home.

Installing solid wall insulation creates a barrier that slows the movement of heat, keeping warmth inside for longer and reducing the amount of energy you need to stay comfortable.

The main reasons to insulate your solid walls:

• Improved energy efficiency: Retains more heat, helping you save money on heating bills.
• Better comfort levels: Reduces draughts and cold spots, creating a consistent temperature across all rooms.
• Lower energy costs: Reducing the amount of heat lost through your walls means less strain on your heating system and lower bills.
• Reduced condensation: Keeps walls warmer, which helps prevent condensation and the growth of damp or mould.
• Higher property value: A well-insulated home with a good EPC rating is more attractive to potential buyers and tenants.
• Environmental benefits: Lower energy consumption means a smaller carbon footprint and a more sustainable home.

In short, solid wall insulation improves comfort, efficiency, and long-term savings. It is an upgrade that pays for itself over time while enhancing the value and sustainability of your property.

Who Can Qualify for Solid Wall Insulation Grants?

You may be eligible for ECO4 funding, a government initiative that helps UK households reduce energy costs through approved home improvements such as solid wall insulation.

The ECO4 scheme is designed to make energy-efficient upgrades accessible for everyone, especially for households with lower incomes or older, less efficient properties.

You could qualify if you:

• Receive certain government benefits, such as Universal Credit, Pension Credit, or Child Tax Credit.
• Have a household income of less than £31,000 per year.
• Live in a home with a low Energy Performance Certificate (EPC) rating of E, F, or G.
• Own or privately rent your property (with your landlord’s consent if you rent).

Even if you do not meet all the above criteria, you may still qualify under your local council’s LA Flex (Local Authority Flexible Eligibility) option, which considers additional factors such as fuel poverty and home energy performance.

At Green Homes Group, we take care of the process for you:

1. We conduct a free eligibility check.
2. We help you complete your application for ECO4 funding.
3. We guide you through any documentation required.
4. Once approved, we connect you with a trusted installer to complete the work.

Our goal is to make it as easy as possible for you to access government funding and enjoy a warmer, more energy-efficient home.

Why Choose Green Homes Group for Your Solid Wall Insulation Survey

At Green Homes Group, we provide independent, expert advice to help homeowners improve their energy efficiency and access available funding. We are not installers, so our recommendations are completely impartial and focused on finding the right solution for your home.

Here’s what makes us different:

Expert Knowledge

Our assessors are highly trained and use the latest equipment to provide accurate, detailed evaluations of your property’s insulation potential.

Comprehensive Assessments

We examine your home’s structure, wall type, and existing insulation to determine whether internal or external solid wall insulation is the best option.

Funding Support

We help you navigate the ECO4 grant process from start to finish, ensuring all applications are submitted correctly and efficiently.

Trusted Installer Network

We only work with accredited installers who meet strict safety and quality standards. Every partner in our network is experienced in delivering professional insulation services.

Clear Communication

From your first enquiry to the final stage of your insulation journey, our team will keep you informed, supported, and confident throughout the process.

Choosing Green Homes Group means working with a friendly, knowledgeable team that prioritises your comfort, efficiency, and peace of mind.

What to Expect During a Solid Wall Insulation Survey

Our survey process is designed to be simple, informative, and completely stress free. The goal is to give you all the information you need to make an informed decision about improving your home’s insulation.

Here’s what happens during a solid wall insulation survey:

1. Initial Consultation

We start with a detailed discussion about your home, including its age, structure, and any insulation already in place. This helps us understand your goals and expectations.

2. On-Site Assessment

A qualified assessor visits your home to inspect your walls, checking for signs of heat loss, damp, or damage. We also assess the property’s suitability for either internal or external insulation.

3. Suitability and Safety Checks

We examine the wall structure to ensure it can safely support insulation materials and identify any preparation work required before installation.

4. Detailed Report

Once the survey is complete, you’ll receive a detailed report outlining:

• The condition of your walls.
• Recommended insulation type and materials.
• Estimated savings on energy bills.
• Eligibility for ECO4 funding and next steps.

5. Next Steps

If you wish to move forward, we will assist you with your ECO4 application and connect you with a trusted installer to complete the work.

Our step-by-step approach ensures the process is clear, easy to follow, and tailored to your home’s unique needs.

Benefits of Solid Wall Insulation

Installing solid wall insulation provides a wide range of benefits that go beyond just saving money.

• Lower Energy Bills: By reducing heat loss, you will use less energy and see immediate savings on your heating costs.
• Enhanced Comfort: Keeps your home warmer in winter and cooler in summer, eliminating draughts and cold spots.
• Better Air Quality: Reduces dampness and mould, helping create a healthier indoor environment.
• Increased Property Value: A higher EPC rating and lower energy costs make your home more attractive to potential buyers.
• Long-Lasting Performance: Once installed, solid wall insulation can last more than 30 years with minimal maintenance.
• Environmental Sustainability: Using less energy means fewer carbon emissions, contributing to a greener, more sustainable future.

Solid wall insulation is one of the best long-term investments you can make for your home. It combines comfort, efficiency, and sustainability in one upgrade that pays off year after year.

Book Your Free Solid Wall Insulation Assessment

If you’re ready to make your home warmer, greener, and more energy efficient, now is the perfect time to act.

At Green Homes Group, we provide free home surveys to assess your property and determine whether you qualify for ECO4 funding. Our friendly experts will guide you through every step, from application to installation, so you can enjoy the benefits without the stress.

We’ll:

• Assess your home’s insulation performance.
• Check your eligibility for government grants.
• Handle the full ECO4 application process.
• Connect you with a reliable installer to complete the work.

Book your free assessment today and take the first step towards a more energy-efficient home.

Frequently Asked Questions

1. What is solid wall insulation?

Solid wall insulation involves adding insulation to the inside or outside of your home’s walls to reduce heat loss and improve energy efficiency.

2. How long does installation take?

Most installations take between one and two weeks, depending on the property’s size and structure.

3. Can I get funding for solid wall insulation?

Yes. Many households qualify for full or partial funding under the government’s ECO4 scheme.

4. What is the difference between internal and external insulation?

Internal insulation is applied to the inside of your home, while external insulation is fitted to the outside walls. Both methods deliver excellent results.

5. How long does solid wall insulation last?

High-quality insulation can last over 30 years with minimal maintenance, providing decades of warmth and energy savings.

Contact Us Today

Transform your home’s comfort, efficiency, and energy performance with solid wall insulation.

Use our quick enquiry form to book your free assessment. Our friendly team will check your eligibility, explain your funding options, and guide you through the process from start to finish.

With Green Homes Group, making your home warmer and more energy efficient is simple, affordable, and fully supported.