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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.
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
Did you know that up to 45% of heat escapes through uninsulated solid walls? External wall insulation (EWI) is one of the most effective ways to weatherboard your property, eliminate dampness, and dramatically lower heating costs. Rated People connects you with trusted, skilled external wall insulation companies who safely install high-quality thermal barriers and stunning decorative renders. Post your job for free to receive up to three local quotes today.
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External wall insulation installers – Rated People
What can an external wall insulation specialist help with?
External wall insulation is a multi-layered construction process that wraps the outside of your property in a thermal blanket. Qualified EWI contractors possess the specialist scaffolding, materials, and rendering skills required to transform your home’s efficiency:
- Solid wall insulation fitting: Securing high-performance insulation boards directly to older brick or stone exterior walls using specialised mechanical fixers and adhesive mortars.
- Weatherproof rendering and cladding: Applying a durable reinforcement mesh layer followed by a decorative top-coat render. You can choose from smooth, textured, tiled, painted, or panelled finishes to boost curb appeal.
- Moisture control and vapour barriers: Installing breathable membranes and vapour barriers that stop exterior rainwater from penetrating while warming the walls to reduce internal condensation.
- Full site preparation and re-fixing: Managing the entire layout from erecting safe scaffolding to removing and cleanly re-fixing downpipes, satellite dishes, and fixtures once the insulation is complete.
How much does external wall insulation cost and save?
While solid wall insulation requires a larger upfront investment than basic cavity filling, the subsequent heating bill savings are significantly higher. Home improvements of this scale are priced based on the footprint of the building and wall condition:
- Average installation costs: Total project costs typically range between £8,000 and £22,000. A standard semi-detached house usually falls in the middle of this scale, while large detached properties sit at the top.
- Energy bill savings: According to the Energy Saving Trust, wrapping uninsulated solid walls can save you hundreds of pounds annually on your energy bills, making it a highly rewarding long-term investment.
- Government funding & grants: You may be eligible for a financial grant to cover or heavily subsidise these costs under schemes like the Energy Company Obligation (ECO). Check with your energy supplier or the Energy Saving Trust for details.
Find a local external wall insulation installer
Internal vs. external: Is EWI right for your property type?
Before booking a specialist, it is essential to check your underlying wall structure and weigh up your installation choices:
- Are my walls solid or cavity? EWI is designed for older solid walls (typically built before the 1920s). You can identify solid walls by an alternating brick pattern of full and half-length bricks, or by measuring your door opening—solid walls are usually less than 30cm thick.
- Minimal internal disruption: Unlike internal insulation, which requires losing valuable room space, moving radiators, and complete interior redecoration, EWI is fitted entirely outside. You can live inside undisturbed while the work takes place.
- Timeline and weather: On average, an installation takes 3 to 6 weeks to complete. Because the rendering process requires dry conditions, bad winter weather can extend this timeframe.
- Planning permission regulations: If your chosen render finish dramatically changes the look of your house compared to your neighbours, you may need planning permission. This is mandatory if you live in a listed building or a designated conservation area.
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Other external wall insulation FAQ's
What qualifications and insurance should I check for?
While there are no strict legal frameworks, look for tree surgeons or installers holding a City & Guilds NVQ Certificate or Diploma in Insulation and Building Treatments. Reputable companies should also hold Public Liability Insurance and ideally be members of trade bodies like the Insulated Render and Cladding Association (INCA).
What are the top questions to ask an EWI contractor before hiring?
Protect your project by asking: Do you provide a comprehensive insurance-backed guarantee for the render? Will full scaffolding costs be handled within your fixed quote? Will you install an integrated vapour barrier to prevent moisture locks inside the wall structure?
Will external wall insulation fix damp problems inside my house?
Yes, if it is caused by condensation. By warming the temperature of your internal walls, EWI prevents warm, humid indoor air from condensing into water droplets on cold surfaces. Note that it cannot cure rising damp caused by a failed ground-floor damp proof course (DPC).
Sign up as an external wall insulation specialist
Are you an external wall insulation installer or rendering specialist? Homeowners are actively looking for trusted specialists to lower their energy bills, upgrade solid-wall properties, and apply modern weatherproof rendering. Join our network today to get access to local insulation leads, fill your pipeline, and grow your business.
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Here at Weathertite Constructions we cover a wide range of building roofing extensions conversions damp problems drainage with camera inspection, garden design with patios driveways and walls. James has 20 years experience Lee has 35 Carl has 10 we are here to provide a good service information and a very reasonable quote kind regards lee
Did a great job considering our budget and practicalities. Removed all waste and left the roof looking in much better condition.
Rico Facilities Ltd has always committed in striving excellent electrical work throughout the northwest. We specialise in -Electrical (All work including rewires, board changes and EICR) -Gas (All gas works including GAS Safety checks full refits and boiler installs) -Plumbing -Roofing -Plastering -Joinery -Carpet and flooring supply and fit -Furniture supply and install -White good supply and install -Waste removal and disposal (Certified on disposal) -Mould treatment, Damp Proofing, Timer treatments, Condensation control & structural waterproofing (Certified) -Fire, alarm and camera -Pianting
RS plastering has been trading for 33 years and I have experience in all aspects of internal plastering and external render work. All work is undertaken by myself and punctuality and cleanliness is of utmost importance to my clients. Unable to upload photos... I have contacted rated people regarding this
Welcome to Dan Construction! You've come to the right place, we pride ourselves on being the best at what we do. We have a team with a wealth of experience in the industry that will do the utmost to ensure you are happy with the service. Please get in touch for a free obligation quote.
Do not trust this man! He did a runner without completing the work, and the work completed is shoddy. Avoid like the plague, and save yourself the headache
Caerphilly garden care Hedge cutting Fencing Grass cutting/mowing Brambles Overall tidy up of gardens and commercial buildings premises Jetwashing Gutter cleaning / repairs Flat pack building
Collected Piano and Stool quickly and took an old car battery too ????????
We specialise in all aspects of construction work. We are completely dedicated to our work and put our experience into the job to make our customers satisfied. We aim to do our best and succeed 100%.
One to be careful with is the electrician Ben. The work seems alright, but his advise left us with excessive lighting in Kitchen and sitting room and our decision against TV sockets in ALL rooms was interpreted as NO TV and phone socket at all, which then later had to be added at extra cost and left the choice of suppliers limited. His crew also did the plumbing and the bathroom installation and the later was not done to the general standard of U&U constructions work.
We are Triton Improvements, a team of expert tradesmen ready to provide a wide range of home improvement work.
Nathan finished the job and was brilliant done an amazing job will deffinately have him back and recommend him to anyone
JJ Walker property development. All trade contractors. Design Build Deliver.
Whether you want to install a new kitchen or your home needs urgent repairs, we’ve got you covered. Oliver with a twist home improvements, offers a comprehensive range of building services for customers in Leeds and the North east of England.
Very polite respectful men workmanship excellent only one criticism is Andrew needs to sort time management
I'm a solid plasterer with 16 years experience from Ireland. I specialise in all systems of internal and external plastering and other works in relation to the the trade.
AK Home Improvements
External Wall Insulation
A one-stop-shop for all your home improvements & construction needs. We are team of professionals people with over 10 years of experience in all areas of building works. Our services include extensions, loft conversions, home improvements including but not limited to bathroom & kitchen installation, painting & decorating, plastering & skimming, wood flooring, carpet fitting, tiling, carpentry, electrical and plumbing services. We believe in providing a excellent service at an affordable price.
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.
I have been running my own plastering company for over 5 years now. I cover all aspects of internal and external plastering works including boarding and solid plastering. Cleanliness and quality of work are something I pride myself on. All jobs are considered no matter how big or small.
Excellent work from a very nice chap! We would recommend Jim 100% he has done a fantastic and professional job , very happy !
My name is Ben, and I’m from North Somerset. I’ve been in the industry since 2006 and have been self-employed since 2010. I’m a plasterer by trade and also multi-skilled, with experience in a wide range of work including reactive and planned maintenance, commercial and domestic projects, building renovation and dilapidation, general building, lettings maintenance, and working for building management companies.
Ben did a really good job. His communication was excellent and we were really pleased by the standard of his work. Left the site clean and tidy. Would definitely recommend.
M & S INTERIORS
External Wall Insulation
M&S Interiors undertakes any job in the field of building. From installing a cat flap or hanging paintings on the wall to redesigning bathrooms and living rooms to repurposing uninhabited basements or garages. With a combined staff experience of over 40 years we focus on providing a fabulous experience to all our customers. We emphasise attention to details, high quality finish, cleanliness and 100% customer satisfaction. Please feel free to get in touch to discuss your requirements or ask any questions you may have! M&S Interiors team
Hi, my name is Wojtek. I am from Poland and have been working in the construction industry for 20 years. I graduated from a construction school in Poland. I’ve been living in England for 11 years, where I’ve gained extensive knowledge of building materials, principles, and types of construction work. I mainly focus on general construction, but my specialty is complete bathroom renovations — from total demolition to final finishing (plastering, drywall installation, floor screeding, plumbing, minor electrical work, ceramic and porcelain tiling, bathroom installations, painting). I am also a professional in insulating external walls with polystyrene, mesh, and various types of plaster (mineral, acrylic, silicate). Similar to bathroom renovations, I am an expert in insulation as well. I have extensive experience in Poland and am gaining more practice in England, though this type of work is still less common here. So far, I have completed several full home renovations. As mentioned, I have no issues with painting (using a paint sprayer), plastering, radiator replacements or repositioning, minor electrical work (the only thing I don't do is laying carpets). Depending on the type and scale of the job, I can adjust the number of people needed to complete the project if necessary. Thanks to my vast experience, I can assist with any type of renovation and ensure it meets high standards. I guarantee full dedication to every project.
WM did a fantastic job on my bathroom i'd highly recommend him.
I have been working for building companies for the last 14 years and decided to start my own company 4 years ago, By building a reputation and relationship with different clients i have been able to maintain a steady flow of work through rated people and through recommendations . I offer competitive prices, reliability and a friendly and professional manner.
Kyle surveyed our home provided a competitive quote and communicated well whilst undertaking the re-plastering of our home. The finished work from Kyle was to a good standard and I would happily recommend him.
We are a professional and friendly team we have over 25 years of experience in all plastering works, Been working on recommendations throughout ,we take complete pride on all our projects, and all have a great eye for detail , we push that extra mile for us and the customers to complete there dream. We also use a spray machine to paint and decorate and silicone rendering for the highest standard possible use GLM for the best and safest way forward
Absolute pleasure to have meet Grant and his team, rendered and painted my house to a high standard, left all areas clean and tidy, would not hesitate to use GLM again. Thanks again Grant. Lisa & Bill
Eley Plastering are a trusted, professional business with over 16 years experience. We pride ourselves on our quality workmanship and our attention to detail. We offer exceptionally high standards at very competitive prices. All work is fully guaranteed.
We hired Eley Plastering for some Render work and our home now looks beautiful. Very happy with the outcome. Robert was professional and reliable. We have contracted them for further work throughout the summer to further improve my home. Would recommend to anyone.
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