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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.
Ash The Plasterer
External Wall Insulation
Quality affordable plastering and rendering in the Loughborough and surrounding areas quality time served plasterer with years of experience from small patches to full house reskims all aspects of plastering and external rendering covered . Don’t hesitate to give me a call quotes are free if you require any plastering work or advice ?? Expertise in all aspects of plastering dry lining, skimming , skimming over artex , refurbs , rendering , tyrolean, sand and cement flat render , rough cast , through coloured renders , tyrolean , silicone render
K&M BUILDING SYSTEM is a business that specialises in all aspects of building. From extensions to driveways, kitchens, bathrooms or demolition. No job is too big or too small. We are fully covered with public liability insurance giving us and our customers peace of mind when carrying out your project. We always aim to complete your job on time to a very high standard with very competitive prices. We provide building services across Edinburgh – 7 days a week.
a well respected plastering company undertaking all aspects of plastering trade. wet plastering / drylinning / skimming/ and traditional lime. also rendering and coving please see photo`s
Had dry lining and plastering work carried out by Keith. Reliable, turned up on time and did a great job. Would use this company again in the future.
I have worked in both the construction industry and in the private sector for over 20 years having developed a wide range of skills and expertise. I particularly specialise in the causes of damp, damp- proofing solutions, plaster boarding/plastering. Bricklaying (internal and external), blockwork and stud walling. I have also successfully undertaken work in many areas of home and garden improvement/repair/maintenance, a selection including - the installation of skirting boards, internal door adjustments and re-hanging doors, laying laminate and engineered wood flooring and the assembly of flat-pack furniture. Removal and replacement of guttering, drainpipes, fascia and soffits. Decking, garden walling, handrails, patios and steps to accommodate sloping gardens. I am trustworthy, reliable and will give a realistic, competitive price for all work undertaken.
Phil done a great job bricking and plastering up the door way, thankyou very much.
With over 22 years of experience in plastering, I offer reliable and high-quality services for both residential and commercial projects.
Joe was excellent in responding to my enquiry. The plastering finish was good and reasonable price. They were quick reliable and cleaned up afterwards. I would thoroughly recommend their services
At Forest Moor Projects, we are dedicated to providing high-quality plastering services throughout Yorkshire. With our expertise and attention to detail, we can transform any space into a work of art.Whether your project is residential or commercial, choosing the highest quality plastering and rendering services in Yorkshire can significantly enhance your property. With skilled professionals, you can achieve a beautiful and durable finish that stands the test of time. Steel RSJ Supporting Walls Creating New Spaces from Plans to Design When it comes to transforming your property and creating new, open spaces, steel RSJs (Rolled Steel Joists) are an essential structural solution. Whether you're removing walls to open up rooms or reconfiguring areas to match your design plans, RSJs provide the strength and stability required to support the remaining structure. From initial planning and structural calculations to the seamless integration of RSJs during construction, we ensure every step is handled professionally. Our expertise ensures that your vision is brought to life safely and efficiently, giving you the perfect balance of form and function for your newly created space
This company is so good! John communicated with me well and him and his team were fantastic. They cracked on, cleaned up, and left the place looking awesome! On site they were polite and friendly and respectful. We would 100% recommend this company and will be using them again when the time comes for some more building work!
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PATTERN IQ LTD are qualified damp specialists providing rising damp treatment, basement damp proofing, cellar damp proofing and loft insulation across Derby, Nottingham, Leicester, Mansfield and Burton upon Trent, including Duffield, Mickleover, Allestree, Littleover, Quarndon, Repton, West Bridgford, Beeston and Oadby. We carry out professional damp surveys and diagnose damp, mould and condensation, addressing wet walls, damp patches, salt contamination and damaged plaster. Serving homeowners, buyers and sellers. All damp proofing work guaranteed. Free quotes available.
EMERALD DRYLINING & PLASTERING
External Wall Insulation
We are a local family run business we do dampproofing plastering rendering specialist fully insured give us a call we hope to help you on any future projects
LONDON PAINTERS & PLASTERERS LTD
External Wall Insulation
London Painters & Plasterers Ltd focuses on providing a high quality decorating service to all of our customers in London areas. We ensure that all of our painters and decorators are qualified in their particular discipline. To accommodate the needs of our customers, we can work evenings, nights and week-ends as well as a normal schedule. We understand how important it is for you and your family to return to a clean, dust-free environment.
G Greaves carpentry and building services of the complete package from new builds to residential cleaning,we cater for all our clients needs across London and Essex. Carpentry specialists. 17 years experience Fully qualified and certified operatives. All building and maintenance works undertaken. Fully insured. Guaranteed work.
George did an excellent job repairing the flashing on my porch roof and waterproofing my gutter. He was precise on exactly what work he was going to do, he gave me a reasonable price and he is always polite and clear in his communications. I would have no hesitation in recommending George for roofing work.
A family business that delivers great customer service. We have a reliable team who all take pride in the work we carry out in your home ensuring that we leave you completely satisfied and as proud of our work as we are. All our work is executed to high standard. So, no matter what job needs doing big or small, I will be happy to provide a very competitive quotation free of charge. fully insured. The work that we undertake: Painting and decorating Refurbishment Tiling Plastering and rendering Carpentry Loft conversion Extension General builders And many more We are looking forward to hearing from you.
Absolutely fantastic service. We had cracks in our two main bedrooms, hallways and living room that needed repairing whilst we were living in the house with a baby and small child. Tilly got three men on the job to get it all completed asap. The team worked flat out without breaks and got done in 2.5 days (Tilly quoted aprox 3 days). They did over and above what I’d asked them to painting areas they hadn’t even replastered to make the hose look fresh. Tilly quoted & charged very reasonably too.
Grip Build
External Wall Insulation
Our company specialises in nearly all aspects of building works. If it's extension, loft conversion, garden project, patio or driveway, structural work or just refurbishment, new kitchen or bathroom, hanging some doors or fitting skirting, plastering room or two, even new lick of paint, we are here to help you achieve your goals and dreams so you can be proud of your home or your rental properties. With 28 years of experience in various trades, there is not many jobs we can't do. High quality of the finish and your satisfaction is what we are aiming for with each of our jobs. We completed vocational education in building industry in trades of bricklaying and carpentery. We are registered kitchen, bedroom and bathroom installers for two well known companies and registered with BiKBBI. You can rest assured your job will be done in professional, tidy and timely manner. We use electricians which are NICEIC registered and Gas Safe plumbers, so each job is safety guaranteed. Looking forward to work not just for you, but with you to get you results you are striving for.
LMG Home Improvements is a leading contractor in home renovation projects across the Wales and South West region. With a reputation for delivering excellence in customer service and strong partnership culture, we provide a range of home improvements to meet our clients needs. We offer a complete package for a home transformation for small or large refurbishments. We specialise in dealing with failed cavity wall insulation and retrospective remedial measures in silicone enhanced rendering and External Wall Insulation to leave a warm and dry, long lasting solution. We also offer roofing services and are committed to superior quality and results in slate and tiled roofing, EPDM Rubber roofing, GRP Fibreglass roofing and also funding towards insulating your flat roof. Our Building Services team is a one stop shop for all general building including extensions, loft conversions, property refurbishments and replacement windows & doors. Our team of experts are able to provide advice for your home renovation to ensure your dream makeover becomes a reality. We believe in the philosophy that our customers journey is just as important as the finished result. This is what we think makes us different.
Completed external wall insulation. Did a good job. Had extra works done. There work is very good but 4 stars due to resource issues trying to complete the jobs. Would use them again.
Nice guy but let me down terribly. I needed 3 rooms to have new ceilings. A messy job and taking the old ones down was fine, but they ran out of time, failed to complete the job leaving gaps in the plaster on the walls and failed to skim the plaster board on the ceilings. Shocking result- they were too concerned about the large job they had and left my rooms in a shocking state.
MGN Roofing Solutions
External Wall Insulation
MGN Roofing Solutions Ltd. provides expert roofing services across London, Essex, and Kent, specializing in reliable, high-end craftsmanship you can trust. We pride ourselves on professionalism and clear communication, ensuring every project—from minor repairs to full installations—is completed to the highest standards. Our team delivers a dependable service that respects both your property and your time. Contact us today for a free, no-obligation quotation to protect your home
We are a team, we work with quality and guaranteed to be satisfied with I M D BUILDING SERVISES.
Good work.
Pure Construction Group LTD
External Wall Insulation
Established in 2021, Pure Construction Group Limited has rapidly built a reputation as a trusted multi-trade building contractor, serving the commercial, social, and domestic markets across Northwest England. With over 30 years of combined commercial and subcontract experience, our team has driven the steady growth of our business. We pride ourselves on being large enough to handle significant projects but small enough to provide personalised attention and exceptional service to every client. At Pure Construction Group, we offer a comprehensive range of services to meet diverse needs. Our offerings include everything from strip outs and kitchen & bathroom replacements to internal and external redecoration. We also specialise in disabled adaptations, retrofit work, structural repairs, groundworks, extensions & alterations, minor building works, roofing (both pitched and flat), damp proofing, and cleaning. Our broad service scope reflects our commitment to delivering high-quality solutions tailored to each project’s requirements.
I am a qualified plasterer and decorator with over 20 years experience in the trade dealing with all aspects of plastering and decorating. I work alongside other tradesmen when called in to assist and am a fair and competent tradesman.
We are very happy with our job, Min came on time every day, he doesn't rush anything and does the job properly, he doesn't cut corners.. Very trustworthy, we left him a key when needed and let him crack on. Polite and very positive towards his work, nothing was a problem. We are very happy.
B&S Exterior and Interior Group Ltd
External Wall Insulation
B&S Exterior and Interior Group Ltd we deliver complete building solutions for homeowners looking to improve, extend, or transform their property._ _On the interior side we carry out loft conversions, house extensions, garage conversions, full refurbishments, and bathroom renovations. That includes structural alterations, steels, electrics, plumbing, tiling, plastering and finishing to Building Regulations standard._ _Externally we handle roofing repairs and re-roofing, plus landscaping and patios to improve kerb appeal and outdoor living space._ _As a single team handling both interior and exterior work, we keep projects coordinated, on schedule, and accountable from start to finish._
LD Design & Build is a trusted construction company specializing in a wide range of services to meet the needs of both residential and commercial clients. With a focus on quality and attention to detail, we offer expert plastering and rendering, painting and decorating, plasterboard installation, as well as handyman and carpentry services. Whether you're renovating a single room or undertaking a large-scale project, our skilled team is committed to delivering superior craftsmanship and exceptional customer service every step of the way. At LD Design & Build, we take pride in transforming spaces and ensuring our clients' vision comes to life with precision and care.
Terrific from start to finish. Communicative, informative, prompt, great value, great work. Really easy to work with from start to finish. Thank you
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