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Last updated: 18 April 2024

Find the Best Loft Insulation Installers

  • A semi-detached home in the UK can save up to £270 on annual energy bills.
  • Loft insulation can cut your home’s heat loss by up to 26%.
  • The UK has grant schemes in place for discounted and free loft insulation.

Loft insulation is one of the most effective and budget-friendly home upgrades that can bring a wealth of benefits to your home. By cutting over a quarter of your domestic heat loss, loft insulation reduces the need for your heating to work around the clock. This way, you can enjoy sky-high savings, a smaller carbon footprint, and a cosy home atmosphere year-round.

However, deciding you want loft insulation is just the first step of the journey. Finding the best government approved loft insulation installers for the job requires lots of research, vetting, and price comparisons. Lucky for you, Household Quotes UK has done the heavy lifting and compiled some of the best local and national loft insulation installers we’ve come across throughout the UK.

In this article, we’ll guide you on how you can choose the best local loft insulation installers for you, what criteria you should base your judgement on, and even provide some great companies per region of the UK.

Are you ready to enjoy the benefits of loft insulation? Let Household Quotes UK take the burden of endless hours of research and vetting off your shoulders. Instead of spending countless hours surfing websites and scheduling phone calls, spend 30 seconds filling out our online form, and we’ll send you 3 free home-tailored quotes for loft insulation from professional installers in your area. Click below to begin!

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Who are the best loft insulation installers?

While the average cost for loft insulation installation falls at around £250 per day (excluding additional services), price isn't the only factor to consider when making a decision. The best loft insulation installers will have a great balance of professionalism, quality, and value.

The "best" installer will depend heavily on your preferences, so here at Household Quotes UK, our guide aims to provide a comprehensive installer list across the country that takes into consideration various criteria for well-rounded results. Here’s some of what we look out for:

  • Certifications: Government-backed quality control schemes (e.g., TrustMark, CAS) ensure top-notch work. Certifications (e.g., TrustMark, CAS) and trade association memberships (e.g., NIA, NFRC) demonstrate an installer's commitment to quality.
  • Experience: Established companies with years of experience likely handle jobs with greater proficiency and can navigate installation challenges that arise along the way.
  • Reputation: Look for positive customer reviews, references, and past project visits to assess the installer's reliability and track record.

By making our decisions based on these factors, we’re confident that you can make an informed decision and find the perfect loft insulation installer for your needs.

Loft insulation installers in London and South East England


Smartstone Energy Solutions is one of the UK’s leading multi-award-winning home insulation and energy conservation specialists with over 25 years of experience in the industry. With a nationwide reach - including in London and the South East - they’ve helped thousands of homes improve living standards with state-of-the-art loft insulation at competitive prices.

Smartstone provides free home energy audits by trusted auditors to ensure you get the best-fit loft insulation tailored to your property’s needs. The company is TrustMark certified, accredited with industry-standard certifications, and was even the winner of the Best Family-Owned Insulation Business of 2023, awarded by the Greater London Enterprise Awards.


Impact Energy is originally a Liverpool-based insulation expert with a nationwide reach. As a proud PAS 2030-2035 compliant installer with access to grant schemes, the company has become a popular and well-received choice throughout the South East and the UK as a whole.In 2022, Impact Energy was the winner of the Energy Efficiency Awards, highlighted for their exceptional installation and contracting services. The company adorns a wide range of professional industry qualifications and accreditations - such as TrustMark certification and HIES compliance - that speak of its professionalism.

Loft insulation installers in South West England


Arrow Insulation, established in 2014, quickly gained a reputation as a top loft insulation installer in South West England, boasting a remarkable 4.8 TrustPilot rating. Renowned for offering competitive quotes, rapid service, and trustworthy advice, the company has earned accolades from satisfied customers. 

Arrow Energy Solutions holds several industry-relevant certifications, including the PAS 2030-2035, and offers grant-based loft insulation and home-tailored quote prices.

While primarily serving in South West England, Arrow Insulation also considers projects in Greater London, Gloucestershire, Oxfordshire, and Kent on an individual basis.


K&M Insulation is a Plymouth-based local insulation company that has been gaining precedence. With over 18 years of hands-on experience in the field, the company provides free on-site property consultations and tailored quotation services to help you get the best idea of your financial investment with the most suitable insulation approach.

With their loft insulation services, K&M Insulation ensures to meet or exceed the minimum government-recommended specifications of 270mm loft insulation thickness. The company mainly operates in Devon and Cornwall in South West England.

Loft insulation installers in North England


Heatpac is a Middlesbrough-located family-owned insulation business extending through North East England, Yorkshire and surrounding areas. The company has been around since 1976 with decades of industry experience under its belt.

As a seal of professionalism, Heatpac is TrustMark certified and associated with various esteemed associations such as The National Insulation Association (NIA). The company provides free insulation consultations and is certified to carry out free loft insulation through grant schemes like the ECO4 or the Great British Insulation Scheme (GBIS)


Insulating Homes is a London headquartered company with a nationwide reach, including in Northern England. It stands out as one of the UK’s leading retrofit assessment and installation companies in the insulation field.

With all necessary accreditations and certifications in place, Insulating Homes specialises in eco-funding for free loft insulation through grant schemes. The company takes care of the entire process from start to finish, including property assessments, grant applications, and insulation instalments.

Loft insulation installers in Scotland


Green Home Systems is a Glasgow-based leading energy efficiency installer that has made quite a name for itself in its field. Established in 2014, the family-owned business has spent the last decade eradicating fuel poverty for thousands of homes across Scotland.  

The company is fully accredited and holds multiple high-grade industry qualifications to provide thermal insulation measures, including loft insulation. Green Home Systems is also eligible to provide free insulation measures through existing grant schemes and initiatives.


Insulation Scotland is a fully licensed and highly acclaimed installer based in Edinburgh with services throughout Scotland. With an excellent reputation, previous customers often praise their competitive pricing, offers, discounts and grants, making them a bargain to work with.  

Using only the highest quality loft insulation materials of a wide range, Insulation Scotland has a proven track record in its field, exemplified by its numerous accreditations, high customer satisfaction, and a team of well-qualified experts.

Loft insulation installers in Wales


Loft Boarding South Wales is a family-run insulation company with a wealth of experience in the construction industry. With a commitment to quality craftsmanship and eco-friendly approaches, the company has gained notoriety throughout Southern Wales. 

Better yet, all of the services provided by the company come with a 5-year guarantee as a testament to their professionalism. Loft Boarding South Wales is CheckATrade approved, has all professional accreditations in place, and is highly applauded by previous customers for its honesty and transparency, competitive pricing, and exceptional services.


Complete Remedial Solutions is a titan in Wales for insulation services. With over 50 years of experience in the industry, the company boasts a wide range of professional accreditations, including TrustMark, CHAS, and STROMA certifications as a testament to their professionalism. 

The company is also a 3-time award winner for the Energy Efficiency Regional Awards of 2018 in customer support and insulation contracting throughout Wales and South West England. Previous customers particularly praise their competitive pricing and bargains.

Loft insulation installers in the Midlands


Verdant Green is a local loft insulation specialist based in Sutton Coldfield, Birmingham and provides services throughout the Midlands. Offering a diverse range of loft insulation materials and approaches, as well as other home improvement services, the company is most praised for its cost-effective solutions suitable to all types of budgets.

The company is fully accredited, boasts high customer satisfaction, and is eligible to carry out free loft insulation as part of grant schemes in the UK.


The Insulation Team is a West Midlands-based family-owned business that has reaped a positive reputation for its effective loft insulation services. With many years of industry experience, the company boasts high customer satisfaction for its work.

The Insulation Team is fully accredited and certified, ensuring all work is carried out to the highest standards and within health and safety regulations. The experienced customer care team is available round the clock 7 days a week, and the company is eligible for free loft insulation through grant schemes given their PAS 2030-2035 certification.

Loft insulation installers in Northern Ireland


One Step Insulation is an Irish family-run business that has grown to become one of the leading spray foam loft insulation companies in Northern Ireland. With full accreditation, expert installers, and high-quality foam insulation, the company boasts high customer satisfaction.

As a testament to their reliability, One Step Insulation provides a 25-year guarantee on all its spray foam insulation services, ensuring it won’t degrade or damage the surface it’s applied to. Customers also praise the company for its exceptional customer service and fair pricing.


Alpha Insulation is a Dungannon-based Irish insulation company with over 15 years of experience in the industry. Providing a wide range of loft insulation solutions and materials, the company is often celebrated for its competitive pricing and exceptional professionalism. 

Additionally, Alpha Insulation is accredited and certified by necessary industry standards, allowing it to provide free loft insulation through grant schemes to eligible homeowners and tenants.

What should you look for when choosing trusted loft insulation installers?

When deciding on a trusted loft insulation installer, you need to look at the credentials that count. This process of researching and vetting can be lengthy, but choosing the right loft insulation installer can be the difference between a perfectly insulated home and a repair-ridden nightmare. 

Here are some things you should look out for when making your selection:

  • Certifications: Government-backed quality schemes like TrustMark and the Common Assessment Standard (CAS) guarantee that installers meet strict professional standards.
  • Industry memberships: Look for installers who are members of respected national trade associations like the National Insulation Association (NIA) and the National Federation of Roofing Contractors (NFRC). These memberships signify dedication to industry best practices.
  • PAS 2030-2035 Compliance: This government-backed standard ensures installers are qualified for grant schemes like ECO4, but more importantly, demonstrates their commitment to high-quality, eco-friendly work.
  • Warranties and insurance: A warranty on the installation is a strong indicator of quality and protects your investment. Opt for installers certified by TrustMark for the best chance of a guaranteed job.
  • Years of service: Experienced loft insulation companies have likely encountered and tackled various installation challenges over the years, translating to a smoother, more professional service for you.
  • Cost breakdown: A professional installer will provide a clear cost breakdown in their quote, including labour and material costs. This gives you a transparent picture of where your money goes. Always compare quotes from multiple installers for a competitive price.
  • Positive reviews: Check online reviews to get a sense of past customer experiences. However, keep in mind that a single negative review might not reflect the overall company quality. Consider if the negativity relates to personal preference or a genuine lack of quality.
  • Word of mouth: Talk to neighbours and friends who've had loft insulation installed for recommendations.
Bonus Tip

Don’t be afraid to ask for references and even visit past projects completed by the installer to get a firsthand look at their work quality.

By following these steps, you'll be well on your way to finding a trusted loft insulation installer who delivers exceptional work, keeps your home warm, and saves you money on energy bills.

How can you get free loft insulation from your local installer?

The UK government offers free and discounted loft insulation to eligible households through two key grant schemes; The Great British Insulation Scheme (GBIS) and the Energy Company Obligation (ECO4)

Qualifying for a grant can make a loft insulation project more feasible, significantly improve your home's energy efficiency and reduce your energy bills. Several factors determine eligibility for free loft insulation:

  • Energy Performance Certificate (EPC) Rating: Homes with an EPC rating of E or lower are generally prime candidates for home insulation grants, including for lofts.
  • Government Benefits: If your household receives certain benefits like income support or pension credit, you're more likely to qualify to benefit from a grant scheme.
  • Council Tax Band: Homes in specific Council Tax bands (A-D in England, A - E in Scotland and Wales) often qualify to make use of grant schemes in the UK.

Two main government-backed schemes are offering free loft insulation. Both are active until March 2026. These schemes are:

  • The Great British Insulation Scheme (GBIS): This scheme aims to reach a wider range of households by providing one energy efficiency upgrade per home, including loft insulation. A home assessment will determine the most beneficial upgrade. You can find more information and apply through the official UK government portal.
  • The Energy Company Obligation (ECO4): Under this scheme, energy companies are directly responsible for providing energy efficiency measures to qualifying homes. This includes loft insulation, along with other services like heating upgrades and repairs. Contact your energy provider directly to learn more and apply.

Ready to save money and make your home more comfortable through a grant scheme? Contact your energy provider to learn more about what they can do for you. Alternatively, check out the UK government portal for more information on how to qualify.

Get multiple quotes from the best loft insulation installers

Making a smart choice for your loft insulation installer starts with getting quotes from multiple qualified companies for a well-rounded picture. This allows you to compare prices and services, ensuring you get the best value for your investment.

The final cost of loft insulation can vary depending on the specific needs of your property. A professional assessment will determine the amount and type of insulation required for optimal performance. This might involve factors like:

  • Existing insulation: How much insulation do you already have (if any)?
  • Loft accessibility: Is your loft space easily accessible for installation?
  • Loft size and layout: The total area and any unique features of your loft will impact the project scope.

While we've provided a helpful starting point, don't hesitate to research additional reputable companies. Here's a breakdown of the process:

  • Contact listed installers: Reach out to the companies on our list to request quotes.
  • Expand your search: Include any other qualified installers you find during your research.
  • Compare quotes: Carefully analyse the details of each proposal, including price, materials, warranties, and service offerings.

Finding the right installer can be a stressful and time-consuming process. Instead of getting stuck in hours of researching and vetting, let Household Quotes UK simplify the process. We can connect you with pre-vetted loft insulation specialists, saving you the hassle of research and phone calls. With our services, you can be confident you'll receive high-quality work at a competitive price.

Simply spend 30 seconds filling in our online form, and receive up to 3 free home-tailored quotes from trusted local installers right in your area. No extra charges or obligations apply. Click below to begin!

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