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Find an external wall insulation specialist

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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Take a look at our External wall insulation specialists profiles, read reviews and request quotes directly.

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DM Construction's core business is comprehensive refurbishment services. We are a dynamically developing company from Southend on Sea. Thanks to the experience gained, we provide the highest quality renovation and construction services. Our professionally selected team of qualified employees guarantees reliable work performance. DM Construction company in the field of modern interior renovations and refurbishments, helps the investor to choose the right renovation technologies. We hope that our proposals will meet with your interest. Bearing in mind the well-being of our clients, we are always ready to help in the field of technical solutions and we are happy to advise you in case of any questions. We invite you to familiarize yourself with our offer and use our services. Refurbishments - Maintenance - General Building

Latest homeowner review

Reviewed by Daniel on 19/2/2020

David created beautiful pipework using top quality jg speedfit products which I wanted fitted, as the pipes were very old they work better than ever now.

Hi my name is Davy i have been plastering 30 years in the industry i do roughcasting and all modern renders i have been on building sites all my working life now i have been self employed 15 years doing domestic work and working for small building firms . Other skills l have are External wall insulation and Venetian plastering

Latest homeowner review

Reviewed by Ann on 23/7/2019

Couldn't have got a better tradesperson everything excellent.

Supreme Plastering Services LTD Offers a wide range of services varying from, Plastering Rendering, Dry lining. Myself and my team have over 16 yrs or experience. First Started off in London City working on luxury apartments to high standards. We are very professional and produce high quality work. We have top quality equipment to delivery top quality finishes. Once the work is completed we will also make sure the property or location is left clean. We also concentrate on time keeping and producing high quality finishes to a set time so your project will also be delivered on time.

Latest homeowner review

Reviewed by Oana on 13/2/2020

very good and prompt service. Fully recommended

I provide a friendly, reliable,service no job to small or big!

Latest homeowner review

Reviewed by Dave on 28/6/2019

Fantastic job, a very skilled tradesman. Painted my hall, landing, kitchen an utility room and was extremely tidy and helpful, Did some extra work, plastering, filling holes etc at no extra cost. I will use his services again soon. I recommend his services to anyone that wants a job done well at a reasonable price. Well done Matt.

A.K.M Render Systems are specialist in high preformance renders colour renders and Brickeffect render we do not have pushy sales men what you see is what you get we believe in giving fair prices for quality work all our work comes with 10 year guarantee

Latest homeowner review

Reviewed by peter on 28/5/2019

Friendly Team very reliable and professional did an outstanding job which we are very happy with. They were very tidy. We would have no hesitation on recommending this company to anyone nice work job well done

Make your home as comfortable and attractive as possible and get on with living.There's more to life than decorating.If you looking for help,solutions to make your interior design ideas come alive I'd be happy to support,advise or simply do it for you.

Latest homeowner review

Reviewed by ROBERT on 8/5/2019

Jimmy and his team were first class, excellent standard of work. Also clean and tidy as the job progressed.

I have been tiling and plastering for over 20 years.13 year my own business .Very reliable person who will treat your job like my own house.All aspects of tiling and plastering .From fit only or full bathroom rip outs. Plastering skim coat. Atrex removal

Latest homeowner review

Reviewed by Gill on 18/12/2019

Martin did an excellent job plastering my room to a high quality. Great value and prompt to provide quote and carry out the job. Very pleasant and I would highly recommend

Smartways, taking pride in our work, ensuring all jobs are completed to the highest standard. Offering a clean, friendly and reliable service. Qualified tradesmen with 10 years experience. All interior and exterior projects and maintenance.

Latest homeowner review

Reviewed by Caroline on 15/6/2019

Hard working guys, I would recommend, they left the place very tidy and even helped me out my washing machine back in! did a good job of the floor and recommend good options for my flooring with a. variety of pricing for me to choose from.

I'm a fully qualified plasterer & builder, working on old and new residential properties. We specialise in small & large extensions start to finish, new porches, full garage conversions, new bathroom refit’s and conservatory's. All plastering and building work undertaken. No job too big or small. Always work in the cleanest safest way possible. Top quality assured. Free quotes and advice.

Latest homeowner review

Reviewed by Alan on 2/3/2019

These two experienced and very knowledgeable craftsman took time at every stage of the work to make sure that the end product was what we wanted. Advice was given on the cheapest way to keep cost down and still maintain the high standard of work. Following the completion of my work these tradesmen have done building work at my daughter’s and also my mother in law’s homes. Very pleased with the work and would certainly recommend them for all types of building work.

i have over 30 years experience in the construction field, from new bathrooms to fully fitted kitchens which includes tiling,painting & plastering. I have worked for the council & now run a very successful business.

Latest homeowner review

Reviewed by Pascal on 18/11/2019

Great work, landlord was also satisfied

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What type of job is it?

External wall insulation specialists - what you need to know

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?

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How our service works

  1. Create a job - it's free

    We'll connect you with the right tradesmen, from over 30 different trades.

  2. Get quotes

    Up to 3 tradesmen can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.

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