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Check Eligibility

Free External Wall Insulation Grants

Improve Your Home’s Energy Efficiency – Fully Funded by Government Grants

If your property qualifies for the government’s energy efficiency scheme, you could get external wall insulation completely free of charge. Cut down on heat loss, reduce your energy bills, and enjoy a warmer, more comfortable home.

Find out if you're eligible

What is External Wall Insulation?

External wall insulation—also known as solid wall insulation—is a proven method to boost your home’s energy efficiency. It involves applying a thermal insulation layer to the exterior walls of your property, effectively preventing heat loss and helping you cut down on energy bills.

In the UK, government-backed schemes such as ECO4 and GBIS offer free external wall insulation grants to eligible households, making these energy-saving improvements more accessible than ever.

At CarbonSync, we specialise in delivering these fully-funded insulation upgrades. If your home qualifies, we’ll manage the process from start to finish—helping you reduce energy consumption, lower carbon emissions, and enjoy a warmer, greener home.

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Choose CarbonSync for Free External Wall Insulation Grants

Looking to boost your home’s energy efficiency? External wall insulation is a highly effective solution for reducing heat loss, lowering your energy bills, and improving overall comfort—especially in homes with solid walls that lack cavity space.

But with installation costs typically ranging from £8,000 to £22,000, many homeowners hesitate to make the investment. That’s where Csync steps in to help you access free external wall insulation grants through trusted government schemes like ECO4 and the Great British Insulation Scheme (GBIS).

Homes with a low Energy Performance Certificate (EPC) rating or properties in certain council tax bands are often prioritised for these grants. The schemes aim to:

  • Improve energy efficiency

  • Reduce heating expenses

  • Make homes warmer during the colder months

  • Support the UK’s environmental and carbon reduction goals

With our expert guidance and end-to-end service, you can enjoy a warmer, more energy-efficient home—completely free of charge.

Get Your Free External Wall Insulation

Check Your Eligibility

Quickly find out if you qualify by completing our easy online form or reach out via WhatsApp for instant support.

Book Your Free Survey

Our experienced team will visit your property to assess suitability for external wall insulation and walk you through the entire process.

Get Insulated & Save

Once approved, our certified installers will complete the insulation work—typically within just a few days—making your home warmer and helping you reduce energy bills.
Frequently Asked Questions (FAQs)

Can you get a government grant for external wall insulation?

Yes! The UK government provides free external wall insulation grants through schemes like ECO4 and the Great British Insulation Scheme (GBIS). These initiatives help improve home energy efficiency, especially for households on lower incomes or properties with lower Energy Performance Certificate (EPC) ratings. If eligible, you could receive external wall insulation completely funded.

Can I get my walls insulated for free?

Absolutely. If you qualify under government schemes based on income, council tax band, or EPC rating, you can get your walls insulated at no cost. These grants cover both the insulation material and professional installation.

Is external wall insulation worth it?

Definitely. External wall insulation significantly reduces heat loss, lowers energy bills, and boosts home comfort. It also improves your property’s appearance, reduces your carbon footprint, and can increase its value. While the cost can be high upfront, government grants often cover the full expense, making it a smart investment for eligible homeowners.

Does external wall insulation stop damp?

Yes. External wall insulation acts as a protective barrier that helps prevent damp by stopping moisture from entering your walls. It also regulates indoor temperatures, reducing condensation and mold growth. For the best results, any existing damp issues should be resolved before installation. Plus, government grants are available to support the cost of these upgrades.

Benefits of External Wall Insulation

External wall insulation offers a wide range of benefits that make it a smart and worthwhile investment—especially when fully funded through government grants. One of the most significant advantages is improved energy efficiency.

By adding a thermal barrier to your home’s exterior, it prevents heat from escaping, helping you maintain a consistent indoor temperature throughout the year. This not only enhances comfort but also reduces the need for constant heating, which directly lowers your energy bills.

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Free External Wall Insulation Grants

Apply for Your External Wall Insulation Today!

Client’s Testimonials

Customer Testimonials

Martin & Claire D., Manchester
Our home feels brand new!
"We noticed a huge difference within days. No more cold spots, and the house stays warmer for longer. CarbonSync made the whole process smooth, and the grant covered everything!"
Aqeel H., Birmingham
Energy bills are finally under control.
"Before insulation, we were constantly topping up the meter. Since getting external wall insulation through CarbonSync, our bills have dropped noticeably. Highly recommend!"
Rebecca L., Bristol
Fast, free, and professional service.
"CarbonSync handled everything from start to finish — the survey, the paperwork, and the installation. It didn’t cost us a penny, and the installers were fantastic."
David P., Leeds
Warmer winters, cooler summers.
"I didn’t expect such a big change. Our home stays warm in winter and much cooler in summer. Plus, it looks better from the outside too!"

Check Your Eligibility for the ECO4 Scheme

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