Find the Best Cavity Wall Insulation Installer Near You

Around 71% of all properties throughout the UK are cavity wall builds, yet according to the UK Government Energy Efficiency Statistical Release, up to 5.1 million cavity wall homes still lack cavity wall insulation as of 2023. 

Poorly insulated walls result in over one-third of home heat loss, reflected in soaring energy bills, big carbon footprints, and an uncomfortable living environment. Choosing to get cavity wall insulation is a great idea, but how do you land the right installer?

With all the cavity wall insulation companies available on the market, it can be difficult to research and vet all your options. Balancing for quality and price can be like walking a tightrope! Luckily, this ultimate guide by GreenMatch UK will provide you with a pre-vetted list of government approved cavity wall insulation installers, as well as tips on tricks on how you can choose the best cavity wall insulation for your home. 

Ready to insulate your cavity walls? Look no further than GreenMatch UK for all you need. Our nationwide network of professional installers can save you countless hours on burdensome research and vetting. Just spend 30 seconds filling out our online form, and receive up to 3 free home-tailored quotes at the best bargains. Click the button below to begin!

Deciding on the best local cavity wall insulation installer is a mix of necessary vetting and personal preference. The best installer for your home can differ based on their professionalism, pricing, and even location. 

In this guide, we’ve researched and compiled a range of impressive UK installers based on some key indicators:

Through a multi-layered approach to researching and vetting, we’ve compiled an extensive list of trustworthy accredited installers throughout the UK to help you with your search.

A&M Energy Group is one of the UK’s largest and most well-represented cavity wall insulation installers boasting a solid 4 on TrustPilot. Founded in 1973 as a family business, A&M today boasts well over 200 employees delivering insulation services nationwide. 

In addition, A&M is both TrustMark and CIGA certified - alongside a whole roster of awards - exemplifying their high-quality workmanship and suitability as a grant scheme installer. This also means work by A&M comes with a 25-year guarantee. Previous customers applaud the company for its meticulous attention to detail, high-quality work, and thorough customer service.

All Seasons Energy is a Sheffield-based one-stop energy efficiency solution, boasting an excellent 4.3 on TrustPilot and offering a wide range of insulation solutions. While young and formed in 2022, All Seasons Energy rapidly gained a reputation as one of the most trusted installers in the South East.

With a bounty of accreditations, certifications and awards, the company stands out for its exceptional focus on sustainability and environmentalism. Being both TrustMark and CIGA certified makes All Seasons Energy a perfect suit for grant scheme installations.  

Previous customers praise the company for its quality workmanship, excellent communication, and efficiency.

Arrow Energy Solutions is a highly professional and fully accredited insulation organisation that has been gaining a great reputation amongst customers. Founded in 2014, today the company boasts an incredible 4.8 on TrustPilot, often applauded for its affordable pricing, amazing customer service, and high-quality workmanship.

Arrow Energy Solutions is also fully accredited and able to carry out cavity wall insulation as part of grant schemes. Amongst the bounty of awards and certifications under their belt, the company is PAS 2030-2035 certified, CIGA certified, and TrustMark accredited.

Advance Energy Services is an up-and-coming installer in the South West of England with a great reputation to its name. Boasting an incredible 4.9 on TrustPilot, the company is endlessly praised for its professionalism, outstanding customer service, and quality craftsmanship.

The company is CIGA-certified and TrustMark accredited, alongside a whole series of other certifications. This makes Advance Eenrgy Services a great choice for homes planning to benefit from a cavity wall insulation grant. 

Broad Oak Properties is an award-winning family-run group that has made a name in the property improvement market. With an excellent 4.4 rating on TrustPilot, previous customers point out their cleanliness, efficiency, and focus on sustainability, aiming to become a key player in the UK’s path to achieving Net Zero by 2050. 

The company is fully certified and accredited, and all cavity wall insulation jobs come with a 25-year guarantee for peace of mind. Broad Oak also works with high-quality insulation materials to help ensure the best performance at the most minimal environmental cost.

Heatpac is a Middlesbrough-located family business centred on home insulation solutions, including cavity wall insulation. Founded back in 1976 and with a history of experience, the company has grown a trust with customers, exemplified by a decent 3.6 on TrustPilot. 

Heatpac is proudly certified and accredited by numerous independent bodies, including CIGA, TrustMark, and the NIA, being able to deliver insulation jobs as part of grant schemes as well.

Cavitech is an originally Sussex-based cavity wall removal and replacement company that has a good reputation in Scotland. With over 15 years of experience in the field, customers are highly satisfied, exemplified by their solid 9.5 on CheckATrade.

Cavitech stands out for being a great cost-effective option, even providing free problem diagnosing and help through their contact line. With numerous certifications and accreditations, Cavitech can provide cavity wall insulation through grant schemes as well.

Dyson Energy Services has been a titan in the energy sector for over 40 years, to date, leading some 3 million energy-saving measures in Scotland and across the UK. With a great deal of focus on quality craftsmanship, solid customer service, and a focus on energy efficiency, the company stands out as a great option.

Dyson is well certified and accredited, capable of delivering cavity wall insulation as part of grant schemes as well. 

Evolve Home Energy Solutions is an outstanding Wales-based home energy expert with over 450 years of combined industry experience! Boasting an excellent 4.8 on TrustPilot, customers praise the company for its professionalism, competitive pricing, and polite customer service.

With nearly all relevant accreditations and certifications in place - including the IAA and CHAS - Evolve can carry out cavity wall insulation jobs as part of grant schemes. 

Smarter Energy UK is a nationwide company that has helped thousands of houses transition to energy efficiency in the past years. Alongside the wide range of services, the company provides free cavity wall insulation to grant qualifiers and paid services.

With its friendly and approachable service team, transparent communication, and a team of ECO4 grant experts, Smarter Energy UK is well-qualified and accredited to carry out cavity wall insulation in Wales and throughout the UK. All insulation jobs by the company also come with a standard 25-year guarantee. 

Cornerstone is a 2004-founded main contractor in home insulation solutions, including cavity wall insulation. Working mainly in Anglia and the Midlands, the company stands out for its commitment to sustainable growth, namely through what they call ethical regeneration.

Previous customers praise the company for its technical excellence, high working standards, and commitment to sustainable growth. With a whole roster of accreditations - including PAS 2030-2035 and TrustMark - Cornerstone is a perfect choice for grant-based insulation jobs. 

WCML is a sustainable home energy efficiency company with an expressed focus on eco-friendly solutions wherever possible. With a mission to help UK residents out of fuel poverty and improve the UK’s carbon standing year on year. 

Boasting a wide range of certifications and accreditations, WCML is well equipped to carry out cavity wall insulation via grant schemes, more specifically the ECO4 and ECO Flex schemes. 

P.C. Dynes Insulations is a Dungannon-based local company that has helped plenty of Northern Irish homes with domestic energy efficiency upgrades. Most notably, the company works with sustainable eco platinum/silver bead insulation, some of the most energy-efficient and environmentally friendly on the market. 

With a 4.5 on Facebook ratings, P.C. Dynes Insulations is a local, reliable, and family-run option for homes in Northern Ireland to get their cavity walls insulated.  

Alpha Insulation, also based in Dungannon, is an expert installer in cavity wall insulation, amongst other home improvement measures. Providing state-of-the-art bonded bead cavity wall insulation, the company works with the newest and most sustainable approaches.

Finding a professional installer at a competitive price isn’t always easy, but there are some key points you can look out for to make sure you get the best bet when looking for wall cavity insulation. Here are just some to consider:

Grant schemes in the UK exist to help low-income and fuel-poor homes with insulation upgrades and other energy-efficiency improvements.

Two main grant schemes currently active in the UK provide free cavity wall insulation for qualifying households. These are the Great British Insulation Scheme (GBIS), and the Energy Company Obligation (ECO4). 

There are certain eligibility criteria to qualify for a grant scheme, the main ones are:

Both schemes are accepting applicants until March 2026. To learn more and apply, visit the official UK government website for the GBIS, or contact your energy provider for the ECO4. 

It’s important to not just settle on the first installer that comes your way, as you might be missing out on great bargains! Contacting multiple installers gives you the best shot at landing your ideal, budget-friendly, and professional cavity wall insulation job.

While it may seem easy, finding a professional installer at a competitive price can sometimes be like looking for a needle in a haystack. Proper research and vetting can have you spend endless hours scouring the web and arranging phone calls. However, GreenMatch UK can free you from this burden. 

With our nationwide network of pre-vetted professional installers, we can deliver you up to 3 free home-tailored quotes. Simply spend 30 seconds filling out our online form, and let the bargains come to you. The best part? Our services are completely free of charge and obligations. Click the button below to begin!