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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?

UTB CONSTRUCTION was established in 2013 and is general contractor offering construction services in terms of full and part renovations houses, extensions, lofts conversion , first fix Carpentry, second fix Carpentry , bathroom fittings, kitchens fittings new built houses and summer homes,Drylining , plastering & Rendering, Decorating, specialist with driveways resin bond, polished concrete, paterne imprinted concrete,tarmac, and block paving.

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Reviewed by Derek on 28/6/2024

Dimitrios did an excellent job working rapidly and efficiently and very willing to do extra work to achieve perfection

We are a Lincoln based plastering business who take immense pride in our work, always wanting to leave customers satisfied and always transparent along the way. We have a combined 18 years in the trade so you will be comfortable knowing your job is in good hands. Level 1 and 2 diploma in solid plastering. Level 2 nvq in plastering.

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Reviewed by denise on 19/3/2024

Excellent arrived on time very tidy did an excellent job, would definitely recommend. Thankyou very much

We are B&F pristine construction ltd partnership, build and renovate residential construction projects in London United Kingdom. We work in this field since 2001, our priority is always client to be happy and our job to reach high standard always.

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Reviewed by David on 18/12/2024

Prompt efficient and the tenant was super happy. Full marks all round

Hendry homes and building services offer work completed to a high quality from friendly tradesman. We take on all Joinery and building work and have multiple trades working with us so we can tackle any size of job.

Elevations welcomes you here to explore and discover our services making sure your current or future projects are achievable and in trusted, experienced hands. Providing a hassle free, honest and transparent service with our one goal one vision outlook. Trading for 17 years we have built a great customer base base within the midlands and beyond. Please explore our portfolio also our website below for further information.

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Reviewed by Cecily on 23/5/2025

Darryl and team have done an outstanding job. Came early and prepared the entire hall stairs and landing. All doors, handles and light fittings covered. They worked hard all day and were very meticulous about everything. Completed the job to a very high standard and cleaned up, before they left on day 2. Worked late to complete the job. Very happy with the result and would definitely recommend to friends and family

Welcome to Property Renovation and Decorating Services: " PROFESSIONAL SERVICE " We are professionals builders with over 17 years experience on all building works: extension loft conversion refurbishment bathrooms kitchens painting and decorating plastering, wood flooring, carpet fitting, tiling. building works undertaken: General Building, New Builds, full Interior & Exterior, renovations and much more. Emy has been providing professional home renovation services for over 17 years. He is praised by the customers for his attention to detail, responsiveness, timeliness and quality work. Call (text) for a free consultation and estimate:

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Reviewed by Maxine on 27/8/2025

We are a fast growing Driveway patio and roofing company based in oxfordshire. We are committed to providing a professional and efficient service at all times whilst maintaning the highest standards of our work. Our extensive experience in the industry make us the go to company for driveways patios landscaping gardening and roofing work throughout oxfordshire and the surrounding areas.

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.

professional, trustworthy company clean and friendly, with over 18 years experience. We are a family run company with skills that have been passed on through generations. Every job is finished to an amazing standard at a very reasonable price.

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Reviewed by Lisa on 1/4/2025

Patrick was professional, friendly and thorough. Really pleased with the repairs and finish to my chimney that required attention. Wouldn’t hesitate to recommend to anyone, very trustworthy.

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 using the best professional tools. We take serious pride in all our work. We also have 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.

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Reviewed by Rupert on 25/9/2025

Excellent job. Very good carpentry work. Nothing was too much trouble. Did the snaggings with no problem. Nice people. Cleaned up very well after the job. Strongly recommend.

North West Render Systems Ltd - We have the experience & expertise in rendering the exterior of your property. Using our specially selected coating systems, we can provide protection for even the most exposed properties.

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Reviewed by Jacky on 11/11/2019

Still waiting for quote!

We focus on clean and fast painting and decorating work using the right tools and new technology. We take pride in our ability of cutting corners and working clean ensuring that every project is executed with care and attention to details. To protect your space and belongings we go the extra mile by always providing plastic dust sheets which reflect our commitment to a tidy and organized working environment. We have more then 5 years of experience. Also offer roofing. Team of 3. Serving London and South West including Clapham, Sutton, Richmond etc

Time served plasterer with 30 years experience. Dealing mainly with domestic work and specialising in skim coating and cornice work. We also do ceiling renewals and repairs and coving. Artexing and repairs to existing artex. No job too large or small and discounts offered to O.A.P’s.

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Reviewed by Waheeda on 7/10/2025

Highly recommend - couldn’t be happier with the job done (coving) by John. Very professional, neat and tidy. He was able to come in very short notice which was greatly appreciated. If I were ever to need any further plastering work done I wouldn’t hesitate to contact John for repeat business.

Domestic and commercial properties maintenance and renovations

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Reviewed by Neal on 9/10/2025

We are a family run business with over 15 years in the building trade. From joiners, plumbers, electricians, painting/decorators, landscapers and plasterers we have it all. We take great pride in our work and customer care is priority.

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Reviewed by Kira on 29/9/2025

Welcome to HOME IMPROVEMENT PROJECTS & SERVICES (HIPS HOMES) Ltd, where excellence meets integrity. We offer a wide range of construction services, ensuring quality and efficiency in every project. Discover our outstanding reviews and let us help you make hips of SAVINGS on your budget, add VALUE to your property, and enhance your own and or your tenant's COMFORT. #HipsHomes #HomeImprovement #TrustedBuilders #QualityCraftsmanship

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Reviewed by Farrukh on 10/10/2024

Ernest is a very hardworking tradesman. He replaced locks for us.

I am builder I have been working from last 9 years in this building industry And trying to provide quality work to british standard I can do any kind of building job If you need my any help Feel free to contact me

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Reviewed by shana on 30/1/2025

AVOID ! At all cost, honestly getting flooring done is so expensive and this company came ruined my new purchase herringbone flooring by laying it completely wrong! They don’t know what they are doing and have no skill. They are messy dust everywhere my walls sofa cushions, curtains everything is a mess. I stopped them and told them not to come back after paying an initial £600 wish I never paid anything now going to open a dispute. Awful is me being nice avoid these people!

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

My company can offer all aspects of home improvements and all aspects of roofing with a full guarantee with all woks carried out I have 15 years of experience in the trade With many happy customers and our company is fully insured so rest assured

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Reviewed by Elizabeth on 31/3/2025

Dwain and his team did a really good job. They responded to the job post and came to do the work quickly as I needed the work doing quite urgently. They did everything I asked, and got it just right. Friendly service with a smile. Would recommend.

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-

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Reviewed by Rickie on 15/3/2023

Very professional. I would definitely recommend this trades person. Good pricing and great work. I am keeping his contract for work in the future.

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