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Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!

Mary

George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!

Dmitry

Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.

Holly

Explore hundreds of cavity wall insulation specialists on Rated People, ready to improve the energy efficiency and comfort of your home or business. Whether you’re considering a new insulation installation to lower your heating bills or extracting old, damp insulation to protect your property, our platform helps you connect with professional local companies who can deliver top-quality workmanship. If you’re a cavity wall insulation specialist, discover how joining Rated People can help you connect with clients and grow your business.

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Take a look at our Cavity Wall Insulation specialists profiles, read reviews and request quotes directly.

Find cavity wall insulation specialists near me

What can a cavity wall insulation specialist help with?

Avoid stress and costly damp repairs down the line by hiring a skilled cavity wall insulation specialist to help you out. Look out for insulation installers that:

  • Are a skilled company with a strong history of high-quality energy efficiency installations.
  • Have all the licenses and insurance needed to protect your property and their workers.
  • Have a good range of positive reviews from previous customers vouching for their reliability.
  • Are offering the exact insulation material you need, and are available to carry out the work in the timeframe you need it by.
  • Are quoting a price and payment option that you are happy with, having compared the insulation quote with other local companies.

A local cavity wall insulation specialist is more likely to respond quickly as they’ll be right around the corner and ready to assess your home.

Post a job today to find a skilled insulation installer in your local area.

Find an insulation specialist

How much does it cost to hire an insulation company?

How much you end up spending on cavity wall insulation will depend entirely on the size of your home and the material you select. The most common insulation materials include budget-friendly mineral wool, expanded polystyrene (EPS) beads, and high-performance polyurethane foam. The overall size of your property, ease of access, and where you live in the UK will also have an impact on costs.

The average cost of a cavity wall installation typically ranges between £1,200 for a mid-terrace home and £3,000 to £5,000 for a large detached house.

For more accurate information on energy-saving budgets, read our cavity wall insulation cost guide, or post a job today to request a free quote from a local insulation specialist.

Factors to consider when choosing a cavity wall insulation specialist

A well-insulated home can entirely transform your living environment, turning it into a cosy, warm space while significantly reducing your winter heating bills. What's more, proper insulation eliminates the stress of rapid heat loss and can add an average of over £11,000 to your property's value by boosting its energy efficiency rating. Investing in cavity wall insulation can also lower your household's carbon footprint and make the property highly appealing to future, eco-conscious buyers.

A cavity wall insulation specialist can help you with:

  • Conducting a pre-installation camera survey to check if your cavities are suitable and free of debris.
  • Injecting high-quality materials (mineral wool, polystyrene beads, or foam) into the external walls.
  • Extracting old, failed, or damp insulation that is causing internal condensation issues.
  • Patching and drilling access holes with color-matched mortar to leave a virtually invisible finish.

Insulation specialists don’t just fill walls with foam. They carefully calculate your home’s ventilation needs to prevent dampness, check the structural integrity of your wall ties before starting, and ensure that airflow to existing brick vents or subfloor voids remains entirely unblocked.

Looking after your home's thermal barrier is incredibly important, as poorly installed or degraded insulation can trap moisture against your internal walls, leading to expensive structural damp and mold remediation. If your property is feeling drafty or costing a fortune to heat, an expert can get your insulation back into perfect shape.

Whether you want to install new energy-saving beads or need old, compromised insulation professionally extracted, speak to a specialist today to receive a free quote.

Find an insulation specialist

Other insulation FAQs

How long does it take to install cavity wall insulation?

For an average-sized semi-detached UK home, a professional cavity wall insulation installation is surprisingly quick and usually takes between 2 to 5 hours to complete. The installers perform the work entirely from the outside of your property, meaning there is zero disruption to your interior living spaces while they work.

What are the building regulations for cavity wall insulation?

All cavity wall insulation projects in the UK require a building notice to be submitted to a local building control body. A qualified installer will handle this for you, ensuring the chosen material meets the required structural 'U-value' (thermal transmittance standard) to fully comply with current UK building regulations.

How do I prepare for a cavity wall insulation installation?

To prepare for the installer’s visit, clear any vehicles or obstructions from your driveway to grant them easy access to the external walls, move garden furniture away from the house, and ensure any internal areas near the walls are clear so the team can occasionally check interior vents during the drilling process.

Hi! I’m Artur, a professional with qualifications and a college degree. For the past 12 years I have been a painter and have good hard work experience and skills to perform the most delicate work. If you need quality work feel free to contact me anytime. Thank you, ELIANS Painting Service Welcome to my services

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Reviewed by Nigel on 2/6/2024

I have 18 years in the trade experience, firstly completing my plastering apprenticeship, and then going on to be come a fully qualified plumber. I specialise in bathrooms and have worked for Global award winning architects over the years. Working to a high standard.

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Reviewed by Nicola on 29/12/2023

All our work is carried out by seasoned builders, qualified specialists and managed by a qualified trader. We take pride in our user friendly approach and professionalism and always aim for a flawless finish.

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Reviewed by Neil on 23/10/2024

This guy standards is very poor for vinyl I would avoid at all costs, he has no skill in vinyl and he insisted I paid in advance, if I see this man again I will.prpnanly go to jail!

We are a family business based in Trowbridge, Wiltshire and have over 20 years experience in Landscape Gardening. We cover everything - From the courtyard garden to the country residence. We can offer friendly help across a whole range of garden needs.

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Reviewed by Sarah on 26/3/2019

Did not make contact with me!

My name is Mentor, I have more than 10 year’s experience in construction especially Landscaping, decorating, extension and loft conversions! I pride myself being able to complete the jobs in attention to detail and leaving happy customers! For over 10 years been getting work mostly as a recommended trader, looking forward to extending the business and helping new customers to build their homes & gardens ,to help converting your ideas and visions in reality!

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Reviewed by Tom on 4/9/2023

Really quick response and work completed really well. Would certainly use again, recommended. Very nice guy also.

With 20 years of experience, we are proud to offer the very best Building Services. Most of our work comes from recommendation.

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Reviewed by Alex on 9/2/2021

Kris from KPT Building was excellent. He was very prompt and worked quickly and neatly. He and a colleague took out our shower cubicle and fitted a new shower tray, replumbed the toilet and cleared a blocked pipe in the loft. It took less than 8 hours! He managed to salvage the old shower cubicle and refitted it perfectly. He was very efficient and we would highly recommend him.

BNT Construction ltd offers a full range of construction services. We take pride in offering competitive services at competitive prices. Services ranging from Groundworks to full house refurbishment or home maintenance ,drainage , basements , piling . Also we can pride ourselfs as the fastest and reliable builder as per customer satisfaction . Latest extension completed from the aprovals of documents and council agreement 4 and half weeks thats based on demolishing the existing build and rebuild the entire extension with fitted kitchen underfloor heating etc. Quality and profesionalism are and always be a priority !!!! Team BNT

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Reviewed by Natalie on 14/3/2019

Excellent service! Will definitely use again!

Railem Building Construction With over 15 years of experience, Railem Building Construction specialises in house extensions and private residential projects. We work closely with homeowners to deliver high-quality results, from planning to completion. Our specialities include house extensions, plastering, rendering, tiling, drylining, partitions, MF ceilings, and full property renovations. We also provide electrical and plumbing works, offering a complete, hassle-free service for private clients. Our team is fully trained and highly experienced, with a strong background gained from both private residential projects and large commercial developments, including stadiums and apartment blocks. This experience allows us to bring professional standards, attention to detail, and reliable workmanship to every home we work on. We pride ourselves on quality, clear communication, and completing projects on time and within budget.

Calladine Services is a family run business which has been established since 1989. We specialise in painting agricultural, industrial and domestic buildings with our access platforms and American airless spray units.

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Reviewed by Peter on 14/9/2025

Chereji Construction Ltd is a trusted, we boast over 8 years of industry experience.Our team specialises in a range of service, Painting&Decoration , Interior/Exterior,Bathroom Fittings, Kitchen Fittings, Tilling,Full refurbishment,Carpentry plus more! We have experience in all industry sectors including top-sec residential development.We know that our reputation is built by workforces ,so we pay great attention to their welfare,especially regarding health and safety .

We are a family run business with over 10 years experience in the building trade, we are very trust worthy and reliable always accomadating the customers needs. We specialise in all trade s from plumbing, electrical, carpentry ,full renovation s etc to pa

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Reviewed by Rob on 1/2/2026

Noades Property Services covers the full range of property work — plastering, rendering, general building, patios, and landscaping — across Hertfordshire, Cambridgeshire, and Bedfordshire. Whether you need a smooth interior finish, a full extension, or a garden transformed with a new patio, we bring the same standard of care and craftsmanship to every job. We pride ourselves on reliability, clear communication, and quality that lasts — no job too big or too small.

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Reviewed by Graham on 29/7/2026

Harry did a wonderfull job reconstructing our decking. I would highly recommend him to carry out any task.

We are very proud to offer our Building Services in Cornwall . We have 30 yrs of work experience in Cornwall. We always give our customers a fixed start date, always turn up and we also give finishing dates on all works. No Builders, locally works tidier than us.

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Reviewed by Julie on 14/12/2024

Great job done , would hire again , well recommended

Redefine Construction & Landscapes is a trusted construction and landscaping company dedicated to delivering high-quality workmanship and exceptional service. We specialize in house renovations, home improvements, extensions, kitchens, bathrooms and flooring. We also complete garden transformations. I.e. paving, decking, fencing and garden- rooms. Whether you're modernising your home, renovating a single room, or transforming your outdoor space, our skilled team is committed to bringing your vision to life with reliable, professional solutions. We take pride in our attention to detail, quality craftsmanship, and ensuring every project is completed to the highest standard.

We are a local building and roofing company who aim for perfection on every job, We are only happy when our customers are happy, We have over 30 years experience in the industry so you can rest assured your project is in safe hands.

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Reviewed by Tina on 14/6/2025

The team was fantastic. Ended up digging up the old patio, putting down a new base, and relaying the stone slabs. Also completed a large deck, sleeper planters and new path. Very pleased with the finished job and great price. Would highly recommend.

We are a specialist roofing contractor, offering a high level of service, at a reasonable cost. Whether a minor repair or complete re-roof, all projects are handled with the personal touch

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Reviewed by Andy on 25/5/2012

An excellent family team. I found APG Roofing to be open , honest, polite and very professional. Their quality of workmanship is top class so I can thoroughly recommend them. A.Byrne.

Hello, My name is Cosmin, I am a professional painter and decorator with over 4 years experience based in London working on comertial and residential developments. No job to big no job to small. I am looking forward to hearing from you. Thank you

We are a familly run business with over 30 years experience,covering all types of building work but more recently specialising in bathroom and kitchen renovations. CHECK US ON FACEBOOK @hometec home improvements paisley

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Reviewed by ann on 22/2/2026

Chris and his son done a fantastic job in my bathroom and took a lot of care in making sure my stairs were kept clean in putting dust sheets down they even hoovered and clean everything before the left .I would highly recommend them.

We are a small team of 12 covering all trades. We have been running for 7 years and slowly getting bigger. We are interested in giving free advise and a free quote to any project large or small. Fully Insured and Qualified team for all aspects. building projects Lenny

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Reviewed by Ellie on 2/8/2026

Asked for the following jobs to be done: Worktops fitted New sink put in Light sockets changed Skirting board changed in downstairs toilet Worktop is scratched Light socket doesn’t switch the light on Massive hole left in wall. Said he’d return the next day to put right. Didn’t return. I’ve messaged every day since. No reply. DO NOT USE. Reporting to Trading Standards now and taking to small claims court.

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Reviewed by Ana on 20/1/2014

They worked non stop and did not leave until it was all done and cleaned. Pleasant to deal with and friendly. Had to do extra work and still fitted it in. Very hard working and nice. Thanks

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