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Miro gave me a fair price and had a slot so could do the work next day. He did an excellent job and was polite, clean and tidy. Had a short lunch break and was finished mid afternoon. Would recommend.

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Brilliant, very nice man and did a very good job

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GM Plasterers did a very good job for us. Quickly and up to a high standard.

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One of the most cost-effective home improvements that not only adds value but keeps your house cosy in winter, is external wall insulation. We have an abundance of skilled external wall insulation companies on our books. Post your job for free and receive up to three quotes from our external wall insulation specialists.

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External wall insulation installers – Rated People

External wall insulation is a cost-effective home improvement for houses with solid walls.

According to the National Insulation Association, a massive 45% of heat escapes through the walls of houses with uninsulated solid walls. External wall insulation keeps your home warmer, adds value to your house and reduces energy bills, making it a worthwhile investment.

Installation involves applying an insulation material and weatherproof cladding to the exterior walls. The cladding that goes over the top comes in a variety of different finishes, including smooth, textured, tiled, painted or panelled.

This means you can choose a style that complements your house.

Are my walls solid or cavity?

External wall insulation is the best insulation option for older properties with solid walls.  Newer properties generally have cavity walls that are best insulated with cavity wall insulation instead. There are a few simple checks you can make to find out which type of wall you have.

Age – properties built before the 1920s usually have solid walls, while properties built after this time have cavity walls.

Brick pattern – if you’re not sure on your property’s wall type, the brick pattern on exterior walls often gives it away. Cavity walls are usually built using bricks of a uniform size, while solid walls have an alternating pattern of full and half-length bricks.

Thickness – cavity walls are thicker than solid walls.  To check how thick your walls are, open your front or back door and measure the wall through the door opening.  Cavity walls usually measure over 30cm, while anything less is usually a solid wall.

Internal wall insulation versus external wall insulation

Solid walls can either be insulated internally or externally. Budget, severity of heat loss and the condition of your walls will determine whether internal or external insulation is most suitable for your house.

Exterior wall insulation cost is more expensive, but it will improve your home’s appearance and is generally less disruptive to install. Some redecoration will be required after internal insulation has been installed.

If you’re not sure which type of insulation is right for you, external insulation companies will be able to help you decide.

What are the benefits of external wall insulation?

  • Reduces heat loss through walls.
  • Reduces energy bills.
  • Reduces internal condensation.
  • Protects walls to improve longevity.
  • Improves weatherproofing.
  • Improves sound resistance.
  • Improves appearance of your home’s exterior (curb appeal).
  • Environmentally friendly.

Moisture penetration

While external wall insulation stops moisture penetrating your exterior walls, it can’t prevent moisture entering your wall internally. It does, however, reduce damaging internal condensation by warming the wall. This causes internal moisture to condense closer to the cold external air rather than on the internal surface.

How long will the job take?

On average, it takes 3 to 6 weeks to complete the work depending on the size of the house. It can take longer if your walls need any repair work or if the weather is very bad.

What preparation work will be required?

Before any work starts, your tradesperson will need to prepare the area. Preparation will involve clearing the walls and the surrounding area of any obstructions. Scaffolding will then be erected for the duration of the job.

Satellite dishes, hanging baskets, creeping plants and anything else attached to the walls need to be removed. Check with your tradesperson what preparation work is required and who’ll be carrying it out.

How much does external wall insulation cost?

Exterior wall insulation can cost anything in the region of £8,000 to £22,000. The price of the job depends on the size of your property and the condition of your walls.

In some cases, it may be possible to get a grant to help with the cost of external wall insulation as part of the Energy Company Obligation (ECO) scheme.  Speak to your energy company to find out if you are eligible or contact the Energy Saving Trust for more details.

How much money will it save me?

While solid walls are more expensive to insulate than cavity walls, the savings that can be achieved on energy bills with this type of insulation are bigger.

Listed below are the average annual savings on energy bills after the installation of external wall insulation according to the Energy Saving Trust.

Detached£425
Semi-detached£255
Mid-terrace£160
Bungalow£175
Flat£120

The qualifications your tradesperson needs

Although there are no formal qualifications required to do the job, there are several courses and certificates available to achieve official recognition. These include a City and Guilds NVQ certificate or diploma in Insulation and Building Treatments, as well as short courses offered by product manufacturers.

Planning permission for external wall insulation

The finish you choose for the rendering will determine if your job requires planning permission. If the finish alters the appearance of the exterior of your house, you’re likely to need planning permission first.

If you live in a listed building or within a conservation area you will need to speak with your local authority. You also need to ensure all work complies with solid wall building regulations.

Insurance for external wall insulators

You should expect all reputable tradespeople to have public liability insurance as standard.  This covers any accidental damage that may be caused to your property during the work.

Questions you should ask your external wall insulator

  • Do they have any qualifications or certificates?
  • Are they a member of the Insulated Render and Cladding Association (INCA)?
  • Which decorative finishes do they offer?
  • Will they install a vapour barrier to protect from moisture in the wall?
  • Will they use full scaffolding?
  • How long do they estimate the job will take?
  • What preparation work will be required before installation?
  • Is the work guaranteed and what are the details of the guarantee?
  • Do they have public liability insurance?

KD Plastering Offers All Aspects Of Plastering & Rendering Services. A Professional Team That Provides A Friendly Service, With Quality Results And Within Your Budget.

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Reviewed by Beth on 19/10/2022

Reliable, trusted working in the business since 2000. We work in conjunction with the client to get the best outcome for any job, within the time frame required. That is why we are trusted and recommended by many clients.

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Reviewed by Sam on 13/10/2020

Very good and reliable.

Top Tier is a small family run business with years of experience in all aspects of roofing and property maintenance with a passion for perfection on all jobs, no matter how big or small.

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Reviewed by GRAHAM on 30/11/2024

Easy to do business with. Job quality was very good and the quote was highly competitive. James was generally very responsive to messages to deal with any issues that arose. There were very few of these and were dealt with quickly. Strongly recommend.

Somerset based family run plastering company, offering warranty with our sponsor K-Rend for rendering, as well as traditional render methods. Damp proofing, internal building, studding, insulation, plastering, lime application to include heritage grade 1-3, floor screeding, floor levelling, internal boarding, hardwall, microcement, venetion application and general building enquiries ect..

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Reviewed by Geoff on 23/9/2024

Matt and his team did an excellent job, quickly, efficiently and within budget. Tidy and friendly to work with, we’ll use them again. Geoff Carew MD

Are you in search of a reliable and experienced building and landscape company? Look no further than LT Construction & Landscape Ltd! With over 20 years of experience, we have established ourselves as a professional, family-run business dedicated to providing top-notch services to our clients. From painting and decorating to new build extensions and garden services, we offer a wide range of construction and landscaping solutions to meet your needs. Whether you are looking to renovate your home or create a stunning outdoor space, we have got you covered. At LT Construction & Landscape Ltd, we take pride in our work and strive to exceed our clients' expectations. Our team of experts is committed to delivering high-quality results, ensuring that every project is completed to the highest standards. What sets us apart from other companies is our dedication to customer satisfaction. We understand that every project is unique, and we work closely with our clients to ensure that their vision comes to life. We prioritize open communication, transparency, and integrity in all our interactions, creating a seamless and stress-free experience for our clients. As a token of appreciation for choosing us, we promise to beat any quote you've had. This is our way of saying thank you for trusting us with your project. We are confident in the value we bring to our clients and are committed to providing affordable solutions without compromising on quality. So, if you're in need of reliable and professional construction and landscape services, look no further than LT Construction & Landscape Ltd. Contact us today for a free quote and let us help you bring your vision to life. #construction #landscape #building #renovations #freequote ????????

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Reviewed by April on 1/4/2025

Contractors made arrangements to call, arrived on time, they seemed very nice & efficient; however we did not receive a quote as promised, when I queried it; he apologized saying he thought he had emailed me to say it would be late as he had broken his collarbone. Then I received a text saying he wasn't going to quote as he was off sick for 6 weeks, so unfortunately we are unable to rate his work...

Hi everyone , thanks checking my profile I’m Vas , have more than 10 years experience in construction I got level 3 diploma in carpentry, my main job is carpentry, but being in the industry so long I also can do handyman, fencing, ground work and foundation, decking, etc j

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Reviewed by Emre on 15/4/2024

Brilliant workmanship , did exactly how we needed the shelves to be made. Highly recommended

At Optimal Finishes , we understand that choosing a contractor is a big decision. That's why our team of specialists and multi-skilled tradesmen is committed to delivering high-quality work with integrity for over 25 years . With a strong record of positive reviews from satisfied customers, you can confidently rely on us. We provide clear, competitive quotes and stick to them—no surprises. We proudly accommodate services for both residential and commercial clients. Our services: -Painting Interior and Exterior Painting Mould and Damp Control -Flooring Installation Laminate, Vinyl, Hardwood, and Engineered Flooring Removal and Installation. Underfloor Heating Herringbone -Tiling Wall and Floor Tiling Splashbacks Tile removal and replacement Bathroom installation Exterior tiling Wet room installation Underfloor heating Swimming pool tiling -Carpentry Bespoke Furniture and Fixtures Doors and Windows Staircases Kitchens -Plastering Decorative Cornicing / Plasterwork Dry Lining & Plasterboard - Installation and Repair Internal & External Rendering Plaster Skimming Polished / Other Plaster Finish Screeding/ Standard Coving -Roofing Chimney repair Clean gutters Roof cleaning Flat roofing Gutter installation and repair Pointing Roof inspection, Installation and repair Solar panel installation Why Choose Us: Our team is passionate about delivering great results. With a 9.8/10 rating from local customers, we take pride in our reliability and quality. We know every project is unique, so we work closely with you to make your vision come to life. Using top-notch materials, we ensure a beautiful, long-lasting finish. Plus, we value your time and strive to complete every project on schedule, making the whole experience as smooth and enjoyable as possible! Ready to transform your space? Contact us for a free quote within 24 hours. Let's discuss your project, and we'll provide you with a detailed estimate.

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Reviewed by Lamia on 8/1/2025

Great team, great work, brilliant service. I asked got my daughters room to get split with a partition wall and they done an amazing job. They was thorough, fast, great work. Really polite, great communication and would definitely use for future work

We are a small development company moving into property maintenance to keep our trusted tradesman busy. We can provide trusted, qualified and experienced tradesman to carry out the work required and are contactable 24 hours a day.

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Reviewed by Ricky on 10/3/2025

Friendly professional team, thank you very much for your hard work and speed of which you all worked

Highly range of painting and decorating skills. Quality for prise. 15years I’m in this business. I love what I do that’s why my standards are very high.Im a very focused person on my duties,knowing what to do.I like to have well organised place to work.Im keeping clean and tidy ,surface after all ,it’s important for me, as a person I am. Experience and variety of the jobs I did in past few years gives me knowledge and assures my of what I am doing.

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Reviewed by Victoria on 14/11/2023

Did an amazing job removing the desks and touching up/repainting the walls.

WELCOME INPROJECT CONSTRUCTION - Building your future, one brick at a time. We have completed numerous projects, from small renovations to large commercial constructions. Our portfolio includes residential and commercial buildings, educational and healthcare facilities, and industrial constructions. Our mission at INPROJECT CONSTRUCTION Ltd is to provide our clients with exceptional construction services that exceed their expectations. We are committed to delivering high-quality workmanship, on-time completion, and cost-effective solutions. What sets us apart is not just our ability to construct buildings but our commitment to building relationships. We believe in honesty, integrity, and transparency in all our dealings with our clients. We value teamwork, professionalism, and continuous learning and improvement. We prioritize transparent communication, ensuring that our clients are informed and involved at every step.

Local reliable and professional refurbishments from leaking taps to full remodelling and project management

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Reviewed by John on 27/3/2025

Excellent work from Paul. He arrived on time and completed the work and left the area neat and tidy. Will definitely use Paul for future jobs.

hi my names Chris. I am a very handy person with things that needs doing around the house. and I charge very fair prices. We cover most areas from roofing, gardening, plastering, some plumbing, painting, almost anything you need do we have you covered so get intouch for a free quote

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Reviewed by James on 21/2/2025

With years of experience in the plastering industry, we offer a professional, reliable and high quality service for all your plastering and finishing needs. We specialise in both internal and external work, ensuring that each project is completed with precision and attention to detail. Our team is fully qualified and constantly updated on the latest techniques, ensuring results that meet and exceed customer expectations. We are committed to providing excellent customer service, on time and on budget. By choosing us, you are choosing expertise, quality and reliability

While we proudly offer a comprehensive range of services, we’re particularly renowned for our expertise in two key areas: roofing and external rendering. Whether you require a new roof installation, expert repairs, or a beautifully rendered exterior to enhance your property’s aesthetics and protect it from the elements, Mac Construction has the skills and resources to deliver outstanding work. Our meticulous approach ensures durable, long-lasting results that stand the test of time. Beyond our specialities, we're also equipped to handle a wide spectrum of general building projects. From minor repairs to full renovations, our team’s versatility means we can seamlessly integrate these projects into your overall vision. We act as reliable and experienced contractors, managing the project efficiently and ensuring that it meets your specific needs and expectations. Time-Served Tradesmen: Our team brings years of experience and expertise to every project, guaranteeing high-quality workmanship. Comprehensive Services: From routine repairs to ambitious extensions, we have the skills to deliver on a wide variety of building projects. Specialized Expertise: Focused skills in roofing and external rendering mean we can offer exceptional, detailed results in these critical areas. Trusted Contractors: For larger projects, we act as your reliable construction partner, ensuring a smooth and successful build. Commitment to Quality: We are dedicated to achieving the highest standards in every project we undertake.

Full property renovations, extensions, loft conversions, outbuildings & more.

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Reviewed by james on 30/3/2025

Absolutely useless made our life a misery never book these had a bathroom fitted horrible job then when it leak and destroyed my front room ceiling trust when I say don't use them .

We provide guarantee quality job with amazing pricing for more then 7 years, Hangloss providing different type of design paintings for same pricing too

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Reviewed by Susan on 4/12/2024

Hello My name is Mario and I am an experienced builder I do flooring ,tiling,carpentry,plasterboard fitting,plastering, painting, brickwork, roofing . I have 15 years of experience and can provide excellent references from all my previous jobs ,all of them being very happy with my work. Please don't hesitate to contact me for a FREE OF CHARGE QUOTE.

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Reviewed by Dan on 30/9/2024

Mario did a great job skimming my garden room walls. Clearly a good guy. Highly recommended.

Hi there! I’m Lloyd from LP Plastering. We’re a team of three plasterers trading in Somerset for the last five years with more than 15 years combined experience. We pride ourselves on being clean and producing a flawless finish. We’re here to help with internal and external plastering needs. We’re looking forward to working with you.

Whether you're in need of a renovation, facing an emergency leak, requiring asbestos removal, or seeking efficient waste management services, we've got all your needs covered. Look no further for comprehensive property solutions at competitive rates. As proud members of the Federation of Master Builders, our skilled and experienced team possesses the necessary expertise to tackle any project. With a robust track record of successfully completing a variety of jobs in both commercial and residential settings, our team is fully equipped to handle projects of any size and complexity. Your satisfaction is our top priority, and we are committed to delivering optimal results for you. Choose Nu Space for a seamless, reliable, and expert approach to meet your requirements.

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Reviewed by Peter on 29/5/2025

Very satisfied with the work installing garden hand rails done by Morgan and Jamie. Would recommend them based on their professionalism and the end product.

We provide excellent renovations for Roofing/Flooring/Painting/Kitchens/Tiling with an experience of more than 25 years. Our aim is to exceed customers expectations.We always pay attention to the customer request and try to finish the job within the deadline.

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Reviewed by Philippa on 29/6/2025

Thanks

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