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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.
Find a local external wall insulation installer
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.
Constructpedia LTD
External Wall Insulation
It’s hard to choose the proper construction company when you have so many options, so which one is the one you are looking for? In an over-saturated market we are trying to make the difference by being professional, involved and confident.
Atom Design & Build LTD
External Wall Insulation
With over 25 years experience Atom Design and Build are the perfect choice for your next project. With an inhouse team we cover all trades from the ground up foundations through to the final touches with the decorating. If your looking to undertake a New Build, Extension,Loft conversion, refurbishment or even just a new kitchen or Bathroom please get in touch and we will see how we can help you. We pride ourselves on doing things right and doing things well. Fully insured and a multitude of glowing references from previous clients.
J COSTELLO BUILDING
External Wall Insulation
I have been working in the trade for over 15 years right through from drainage and groundworks, to plastering and completion. In more recent years I have mainly focused on small one off, bespoke new build houses where detail and client satisfaction are paramount.
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We take on all aspects of plastering work from artex removal ceiling replacements re-skims rendering we are Manchester based And work within greater Manchester
Costa Boyer Ltd provides specialist for complete building solutions: house extension/ loft conversion/ replacement windows/ doors/ shops front/ home improvements/ kitchen/ tanking slurry solutions/ garage conversion/ porch/ canopy/conservatory / garden shed/ wooden decking/ parquet/ painted house/ Venetian stucco/ water leak/ 30 years experience building site/ all team have CSCS card/ NVQ Level 2/ NVQ Level 3 supervision/ GQA Qualification Ltd Certificate of achievement in theory of SCHUCO/ GQA Qualification Ltd Certificate of achievement in SCHUCO Curtain Wall/ GQA Level 3 Certificate in glass related operation/ GQA Level 3 NVQ Diploma in Fenestration Installation/ IOSH Working safely a course approved and validated by the Institution of Occupational Safety and Health/ Gold card Constructions Qualifications CSCS / Quality Management & Control accreditation by Mace Business School Limited/ Level 6 NVQ/ SMSTS and new one... Covid-19 Essential: Infection Prevention and PPE
Costa was excellent. Very friendly, efficient and carried out the work to to a high standard in the agreed timeframe and at the agreed price, despite some unexpected problems along the way. Would happily recommend him.
We are a family business, under the ownership of myself and my wife. I am a skilled tradesman with over 19 years in the industry. We are the ‘new age’ of building; We show up, we are polite, we are tidy, we communicate and we deliver great results.
Rhodes builders were 1 of 10 companies who quoted on our extension. Josh was only 1 of 2 that we considered giving the job too. The other was similar on price, the other 7 or 8 either didn't provide prices, didn't bring a tape measure or simply didn't follow up when they said that they would. Josh was reliable, arrived on time, when he said he would & from the first day to the last did everything that he said he would. A small company, Josh had 3 other people working with him. We're very happy. Excellent.
Exstentoin rendering plastering home improvement repointing Stonemasonry
Professional job done to a great standard at a reasonable price by 2 lovely guys who turned up on time cleaned up after themselves every day and finished the job in the time scale they quoted will be using them for any future jobs and would recommend them
Self employed roofer and builder . All work carried out to a very high standard . Very honest and reliable . Prices are very competitive .
I am a local tradesman with 25 years of experience in the building and plastering industry. I have a great, reliable team behind me who are not only friendly and professional but will also finish every job to the highest standard possible.
Really happy with the work carried out. Any issues I raised were dealt with and any snagging I needed addressing were resolved. Would recommend Luke and his company and use him again.
Do you want the team that will improve your interiors to have a good work ethic and be detail-oriented? Look no further – at Altun building and Renovation, our goal is to go the extra mile and deliver excellent results of the finest quality. We provide a range of home improvement services that make your home more comfortable and spacious than before. With over 12 years in the industry, we are proud of our progress and in our commitment to ensuring our clients are never disappointed. From room extensions to kitchen renovations and from plastering to painting, tiling and everything in between, our abilities and expertise mean that we can make your dream home a firm possibility. Our comprehensive services can cater to any need and we work with rigorous attention to detail. Right from when you first contact us, we ensure a stress-free and reliable service with your every need taken care of. There won’t be any delays or misunderstandings nor will we ever go beyond the budget. Instead, you will find an efficient and friendly service from a team that isn’t afraid of long hours or challenging projects. Our rates are reasonable.Please contact us for a detailed chat and we hope to work on your project soon.
We were well please with Utim, his professionilsm, courtesy, promptness, his attituded to do the job right. We would recommend him, if we need work done in the future we will give him first refusal.
Based in historic Nottingham, the skilled, passionate team have a variety of knowledge, energy and the creativity required to bring home owners', architects' and interior designers' ideas to life. Our first project dates back to 1980s, we have seen many changes over the years and have always delivered beyond the status quo. The services we offer range from small bathroom or kitchen renovations to entire house development - no concept is too complex! We are always happy to welcome new customers.
Brilliant job, great price highly recommended
We are a family run business with over 25 years of experience in the building trade. Specialising in Plastering and Rendering. We are also the go to team for all your media walls. You can also look us up on Facebook and Instagram
We are an established company covering all aspects of domestic and commercial renovations covering all aspects from design to completion
George started really well but unfortunately didn't finish the small areas required to complete. Had to finish of some small cosmetic issues myself. Such a shame as the main tiling work was really good.
Pioneer Building Consultancy was founded in 1998 and is based in South East London. We don’t just design and build new homes but we also refurbish, maintain and repair homes and regenerate communities, this is why we have become the nations first choice.
Cleos was reliable, polite and showed pride in the quality of his workmanship. He managed to get my kitchen worktop fitted to correct specifications and went out of his way to make sure that I was happy with everything and accommodated my situation considering that I was short on time. I would use his services again in the future.
Property Renovation & Decorating Services "Excellence in Construction, Passion for Detail" With over 17 years of solid experience in the construction industry, our team provides comprehensive renovation and interior decorating solutions designed to bring your vision to life. Led by Emy, a professional renowned for his rigor, integrity, and craftsmanship, we are committed to delivering every project to the highest standards of quality. Our Services We offer a wide range of construction and finishing services, professionally managed from initial concept to final handover: Extensions & Conversions: Expert loft conversions, home extensions, and new builds. Full Renovations: Complete modernization of houses and apartments, including bespoke kitchen and bathroom installations. Premium Finishes: High-end interior and exterior painting, professional plastering, and precision tiling. Flooring: Installation of solid wood, engineered flooring, and carpet fitting. General Building: Structural repairs, general maintenance, and full-scale property refurbishments. Why Choose Us? Our reputation is built on four core pillars that ensure every client receives exceptional service: Attention to Detail: We believe perfection is in the finishing touches; every task is executed with surgical precision. Timeliness: We respect your schedule and strictly adhere to agreed deadlines. Transparency: Open communication and honest, competitive estimates with no hidden costs. Proven Expertise: Over 17 years of successful projects and satisfied homeowners. Contact Us for a Free Estimate Ready to start your home transformation? Contact us today for a free consultation and a personalized quote.
Lovely experience, the team is nice and professional. Delivered promise on time. Strongly recommend.
Hi, here at dymond finish we offer a professional and clean finish to all works carried out, we pride ourselves in work satisfaction and customers satisfaction.
Whether for commercial or domestic projects, we provide a friendly and professional service that includes all aspects of design, planning, construction, building repair and maintenance. With extensive experience in the construction industry, our team of fully qualified tradesmen guarantees a high standard of workmanship. We are completely committed to every project we undertake and all are properly managed to keep writhing budget and in schedule. We are punctual, reliable, tidy and and the good relationships we build with customers means a high level of repeat business and recommendations. Facebook & Instagram unico develop
Too Inexperienced
Hi , I am time served plasterer with over 33yrs exp. In the trade , been self employed for 18yrs , done many different projects over the years with plenty of happy customers who come back to me regularly and pass my number to family and friends , I also have excellent reviews on another website i advertise on . Thanks Dave
An excellent job, very tidy and a good price. So pleased with Dave`s work that any plastering we ever want we will always have him do
Hi. We’ve been offering a decoration service for over 12 years now. Our main aim is to provide a high standard of service and workman ship that meets and exceeds customer expectations. We’re happy to help plan all stages of the work and have a good relationship with a network of other trades if needed, to help complete a project smoothly. We look forward to hearing from you
James was brilliant, did an excellent job. So pleased with my new room. Reliable, on time. Outstanding workmanship. Already asked for a quote on next room and recommended to family and friends. Thankyou
Hi my name is Agron I am professional plasterer since 2007
Caring, clean and efficient. = Good service
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