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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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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 exterior 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 Cherrelle on 4/11/2019

Absolutely amazing job done on redoing my kitchen floor which wasn’t as straight forward as it looked. Really professional and very tidy. Highly recommend them they’re great

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'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.

We are a complete Building and Decorating services offering all trades and 12 months guarantee on all building work. Are highly skilled team look to give you quality workmanship at a competitive rate.

Latest homeowner review

Reviewed by Adam on 5/11/2019

Great job at a very reasonable price. Would use Robin again for sure.

We are self made company with over 15 years of experience. We have completed a range of jobs including from large sites to family homes, we have even appeared on DIY SOS. We are qualified in K-rendering and always complemented on our friendly service.

Latest homeowner review

Reviewed by Jim on 22/6/2016

The job was done very professionally.. I had asked for particular care with dust and mess and they obliged with a very clean job. Happy with the work and would use them again..

here at Oakham plastering & property care we cover all aspects of the plastering and property care trade from a patch on the ceiling to a complete house covering all private and commercial work including insurance work with over 30 years experience in the trade fully insured work

Latest homeowner review

Reviewed by Craig on 8/7/2019

Really friendly and professional. Pleased with the work.

M2

External wall insulation

you need professional help in refurbishing your home? You’ve come to the right place. At M2 Contractors we have the right qualifications and skills to offer you a robust set of construction services. You can expect the highest standards of workmanship from us, available to you at very competitive rates. As professionals with years of experience, we offer a great selection of general construction work like plumbing and painting & decoration And house extension and services in and around London.

Latest homeowner review

Reviewed by Alex on 18/7/2019

Very responsive and did a good job in good time.

Building Services is a company that specialises in all interior/exterior services & maintenance work. We offer a high standard of work to both domestic and commercial customers. We are a highly skilled and experienced team & we always strive to achieve an exceptional level of customer satisfaction.

Latest homeowner review

Reviewed by John on 6/11/2019

Incredibly impressed with the workmanship & finish of the job undertaken. From the moment I posted this job, until it’s completion, communication has been clear. They arrived exactly on time, completed the job to a high standard, charged exactly what was quoted & left the room spotless. Very pleased to have found Jakub and fellow tradesman, who are reliable, trustworthy, friendly & have done a fantastic job. We would definitely recommend to others & will be using them again for other jobs later in the year.

Hi there we are a plastering and building company We are a family run business Our aim is for customer satisfaction on every job Over 30 years exp All trades back up No job to small or big We cover Edinburgh lothians Fife Scottish Borders Kitchen & bathroom specialists the complete home improvement specialist Same day estimates Free estimates and advice

Latest homeowner review

Reviewed by Ian on 16/11/2019

Great job would definitely recommend.

External wall insulation Silicarend specialist Rendering Plastering Brickwork General building work

Latest homeowner review

Reviewed by Tanya on 24/9/2019

NU look Insulation were brilliant from start to finish. Paul was professional and approachable. They built us a great garage, rendered our house and finished everything to a very high standard. He would much rather talk face to face about everything to make sure that everything is clear and everyone understands. The work that he & his team did for us was fantastic. We now know we have a reliable tradesman to call upon for all of our upcoming house development.

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What type of tradesperson do you need?

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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