The quick way to find a local External Wall Insulation specialist
Over 10,000 rated tradespeople
are ready to help you get your job done
Over 3 million happy homeowners
have found a quality tradesperson
Over 1 million ratings
with 88,000 5* ratings in the last 12 months
Join our group of happy customers
Thousands of 5 star reviews
Read real reviews from customers about their service experiences.
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.
Richard
Brilliant, very nice man and did a very good job
Liam
GM Plasterers did a very good job for us. Quickly and up to a high standard.
Magda
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.
Browse External Wall Insulation specialists
Take a look at our External Wall Insulation specialists profiles, read reviews and request quotes directly.
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?
Finishing Touch
External Wall Insulation
Hi, my name is Ivan and I’m a skilled and reliable plasterer with six years of experience in the industry. I take pride in delivering high-quality workmanship, whether it’s skimming, rendering, drylining, or patch repairs. No job is too big or too small—I always ensure a smooth, professional finish that lasts. If you want to see more of my job just visit my Facebook group Finishing Touch I’m committed to customer satisfaction, working efficiently and tidily while keeping communication clear throughout the project. If you’re looking for a trustworthy plasterer who values quality and attention to detail, get in touch for a free quote today!
J4H Civil Engineering Ltd is a trusted company providing a range of property maintenance and home improvements for domestic and industrial customers in Feltham, Middlesex, West London, and the surrounding areas.
Delighted with the service received from this company. Completed the job to quoted budget and well within the maximum timeframe quoted including doing some extra work (painting hallways, replacing spotlights) that weren't in the original job. Everything looks really good, and I wouldn't hesitate to recommend them.
Experience in: Tiling Plastering Painting Laminating Bathrooms Roofing Block paving Brick work Garage conversion Extension Mould Treatment END MORE
Dear Customers if you need professional people who will take care of your home, offices, retail property, hotel, restaurant, pub, leisure facilities, apartment blocks or refurbishment project? We always with satisfied clients, always on time, always to advise and help with clear and good prices. We're on the market for almost 12 years, learning new things, maintaining the highest quality standard and building a base of regular satisfied customers, If you need more information about us, we are ready to help and answer your questions.
Hi welcome to roofs r us limited we are a very experienced company from roof repairs to new roofs soffits and facias all kinds of roof repairs we are a very reliable company with over 15 years experience we do all kinds of landscaping from patio to driveways garden walls all kinds of work for your garden take a look of the work we carry out and the ratings and recommendations for a free quote contact Tony
Professional job by a great team. Problem identified and work carried out on date promised.Would highly recommend
LEO POP PROPERTY MAINTENANCE
External Wall Insulation
We are at your disposal to help you with Leo pop construction property maintenance Ltd We arrange tiling works, gardens, paving and other interior paint?ing and exterior jobs .
MC Plastering
External Wall Insulation
Your Premier Plastering Service in Warwickshire At MC Plastering, we pride ourselves on delivering exceptional plastering services across Warwickshire and the surrounding areas. With over 15 years of industry experience and City and Guilds level two diplomas in plastering, our skilled team is committed to providing top-notch plastering solutions for both residential and commercial clients.
I have been in the construction industry for over twenty years self employed and before that employed by others. I pride myself in giving good solid advice as well as producing a quality job which I’m proud of and that the customer expects. I am a Dulux Select Accredited Decorator and all work is guarenteed by Dulux for two years. I have Public Liability Insurance to the Value of £5m. I have been a Decorator since 1999 and take a pride in my work and take customers requirements very serious and aim to give them the benifit of many years experience. Plus as part of my business i employ a range of other skills including electrician plumber, roofers and builders etc.
Great communication from this trader from star to the end of the job. Even it wasn't Ivan completed job in person, he kept me informed and checked during the day if everything was all right. Plesent to discuss and negotiate. Many thanks!
Multi Trade Builders
External Wall Insulation
We are a family run buisness that originated in Lincolnshire. We have relocated to the Kent area and have a fantastic skilled team of builders, carpenters, electricians, landscapers and many more. We thrive on perfection, quality and value for money and will share our knowledge and expertise with you.
I've been in the building trade for most of my working live I specialise in all types of plastering and good experiences with tilling,many years of site work but decided to change direction,I like to aim for customer satisfaction I'm also handy with interior painting and floor services.
Builder saw and quoted for the job. I hired him in good faith. Started work refused to remove both fence panels. Removed and damaged the panel,did not errect it back as found.Did not finish my job. Left all rubbish in the work area, including his own bucket.Poured cement and raw lime water in my flower bed, destroying my seeds, germinating for the summer season. Broke my garden tap off the push fit and couldn't fix it back. A total disaster, leaving me with incomplete rendering, which cost me twice over.
instead of hiring and dealing with multiple people, let us handle the hassle out on your behalf! one deal, one man! My name is Behrooz, and I have 14 years' experience in building and carpentery works. We specialize in renovation and refurbishment of commercial and residential properties at the best quality and price with professional tools and masters. we are also have got a joinery factory in London, We manufacture any made to measure woodworking such as shop display and counters , kitchen units, wardrobes, TV stands, dining tables etc - you name it, we do it.
I had the media wall installed by this so called professionals, door section of the media wall has not been installed properly and bear sectionnofnthe wall is visible, I had LED installed behind the TV, it never worked and I asked him to corner and fix it, 5 months later I am still waiting, I don't recommend them at all, stay away of you can, uninformative, no idea what they are doing, my electric is tatters now, my lights dont work and I have hire a electrician do fix the issues
AD handyman Services we will undertake/consider any handyman jobs painting flatpack assembly,,shed assembly/removal, roof recovering, reseal of showers/baths/kitchens blinds/curtainso . Any decking and fencing requirements.... and many more internal and external jobs. All works carried out as efficiently and cost effective as possible without a reduction on quality.
Alex and his team were fantastic. The work was carried out to a high standard and was exactly what I wanted. Communication was great and everything was tidied up afterwards. I would highly recommend Alex and his team.
Est since 1985,BDI PLASTERING prides itself on quality workmanship,reliability,and honest advice.Please click on my photos,showcasing previous works,and click onto my homeowner reviews for client testimonials.
Hello , I am Michael . Fully qualified time served plasterer of 10+ years, customer satisfaction a top priority. Work is always carried out to a high standard with a friendly service, many trade and domestic work references, competitive quotes provided
Michael has done a superb job at our property to a very high standard plastering and coving a very reasonable price clean and tidy,punctual and did exactly as we asked
Hi there, we specialise in electrical, general building and Groundworks. However, we also provide the below services. We have over 15 years experience in the construction industry and we are also fully insured and licenced. House Building Extensions Electrical installation Furniture building Joining Carpentry Roofing Groundworks General wall filling and painting. Sockets and light fixings. Appliance installation Appliance hanging. Fitting shelves Fitting wall units Landscaping General Gardening Driveways Kitchen fitting Full home redec The above is not exclusive so please do not hesitate to contact us.
Very friendly company and despite setbacks and delays on the job due to weather the job was completed to a good standard. We are happy with the work done and will enjoy the extra space in the garden come summer.
Trueline Finishes
External Wall Insulation
At TrueLine Finishes Ltd, we’ve built a reputation over the past 16 years for delivering top-quality finishes across a wide range of projects. Whether it’s home improvements, full refurbishments, or large-scale extensions, we handle it all with precision and care. We pride ourselves on not only the quality of our workmanship but also our reliability and the strong, lasting relationships we build with every client. If you're looking for a trusted partner who delivers excellent results on time and within budget, TrueLine Finishes Ltd is the right choice for your project.
DURA POWER LTD is a company that specialises in refurbishment and new build projects, particularly in the education, healthcare and commercial sectors. With extensive experience in these fields, we offer a value-added approach and understanding of our clients’ requirements. We maintain strong relationships with a wide variety of tried and tested subcontractors. This strong supply chain enables us to provide flexibility, manage change and maintain quality. We are capable of handling tendered or negotiated projects . Our financial strengths come from a commitment to reinvest, ensuring a sound financial base is maintained without external borrowings. We have a team of directly employed professional staff who deliver a cost-effective, timely, and high-quality construction solution. Our core team of tradesmen delivers consistent quality and has the ability to be flexible and reactive to requirements. Our long-lasting client partnerships are a testimony to the exemplary service we provide. This level of customer satisfaction, repeat and referred business forms the foundation of DURA POWER LTD success. Our approach is sensitive, innovative and bespoke, driven by challenging and constrictive working environments. We are committed to achieving the optimum solutions across our service delivery, considering logistical aspects to ensure customer satisfaction.
Rated Cloud Basic
External Wall Insulation
All Change Building and Decorating is a family run business and members of the fmb-federation of master builders , dulux select decoraters and trust mark registered
Just got home from work and delighted with the work Chris has done. Looking lovely
CG Building LTD , it is a small company , established back in 2016. We carry work all around UK , but now we are based in Somerset and we cover all surrounding areas. •We take small & big jobs ! •We do all aspects building •We offer a friendly and reliable service, working closely with the client to make sure they have a clear understanding of the works that are being carried out throughout the process. -Renovations- - Kitchen and bathroom insulations- Plastering. - Painting and decorating. - Carpentry-
Very professional. I would definitely recommend this trades person. Good pricing and great work. I am keeping his contract for work in the future.
Get our app for homeowners
- Send messages and get notifications from tradespeople
- Add photos to get more accurate quotes
- View tradespeople's profiles