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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.
MKSAM
External Wall Insulation
MKFAM LIMITED Professional Summary: MKFAM LIMITED is a leading construction company based in London, specializing in high-quality kitchen and bathroom fitting, flooring, plumbing, and carpentry jobs. With 15 years of experience since our establishment in 2007, we are renowned for our professionalism and commitment to delivering exceptional service to our clients. Services Offered: - Kitchen fitting - Bathroom fitting - Flooring installation - Plumbing services - Carpentry work Experience: Over the past 15 years, MKFAM LIMITED has successfully completed a wide range of projects, enhancing homes throughout London. Our experienced team is dedicated to ensuring quality workmanship and customer satisfaction on every job. Skills: - Expertise in kitchen and bathroom installations - Skilled in flooring, plumbing, and carpentry - Strong project management abilities - Excellent customer service and communication skills
Jake Brazier Plastering Services
External Wall Insulation
Jake Brazier's Plastering Services offers cheap, reliable rates on plasterboarding, skimming, repairs in plaster, internal and external rendering
CBS
External Wall Insulation
At Chiossone Building Services we provide a wide range of services within the construction industry. With 7+ years in the building industry, CBS have the skills required to provide a stress free high standard of work. From completely renovating your garden/home, to making a simple change within your household, we will approach the job professionally and strive to make you happy with the end result. Thank you for taking the time to read my profile, looking forward to building my profile and reputation! Please check my social media pages for the most up to date photos of my projects. Marco Chiossone
Standing with over 20 years of experience, we offer a friendly but professional service with a no nonsense approach to all of our projects undertaken. We specialise in plastering and rendering but for the past 7 years have exceeded in all building works.
Excellent work
I offer a first class professionally qualified plastering service for all your plastering needs I am a very tidy worker with a caring and considerate approach. You can be assured of the highest quality workmanship while providing the best vale for money If you would like to see more photo of my work and what I can do for you I got a website which is www.fairwayplastering.co.uk please feel free to do.
Top Service!
DGR Builders LTD
External Wall Insulation
This company is successfully. It has young and skilled workers. The company is serious about work and works on time. A young team of Romanians who want to achieve very good results. Trust our work and you will not regret it. We can negotiate any price. Thank you for your choice.
Small local based building company, 18 years trading, local timeserved experienced tradesmen. All types of building work undertaken to a high standard Fully insured contractor. Can provide all trades
The job was completed within a few days of getting a quote. I am happy with the standard of work done and the price charged. I would recommend using this tradesperson to my family and friends.
Home Happy
External Wall Insulation
At HomeHappy, we offer comprehensive Property Maintenance & Home Care services to keep your home in top condition year-round. From routine inspections and repairs to seasonal upkeep, our skilled team ensures every aspect of your property remains well-maintained and functional. Trust HomeHappy to provide reliable, expert care, preserving the value and comfort of your home. Our Services Include: Roofing Roof and Wall Coatings Roof Cleaning Roughcasting K-Rend Solar Power Architectural Drawings Mono-Blocking Resin Driveways Double/Triple Glazing Double Glazing Refurbishment Garage Conversions Roofing Repair Pressure Washing
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All-in-One Builder & Handyman —- Fast • Reliable • Affordable —- Electrical Work Plumbing & Drain Cleaning Carpentry & Wood Repairs Painting & Decorating Gardening & Yard Cleanups Tiling & Patio Work Flooring, Vinyl and laminate
Thank you for your help and fixing my DIY problems!
Starting from a time served apprenticeship, within the McCall family trade, Matthew McCall plastering has gone on to establish itself as one of the leaders in the industry in the southwest. High standards at affordable pricing is the focus for us.
Needed our cloakroom plastered, did a fantastic job and the price was very reasonable, would highly recommend
We have been trading for 18 years and specialize in painting, decorating, building work, full-scale refurbishment, bespoke wardrobes, kitchen installations, and high-end bathroom refurbishments.
fantastic work from very nice professional team - will employ again
With over 30 years of experience, Omni Drylining is a family-run business, founded by Owen O'Brien. Working as contractors or sub-contractors in both commercial and domestic sectors, our tradesmen cover all aspects of drylining, plastering, rendering, screeding and general painting & decorating. ? Omni Drylining is proud to work with a number of suppliers and are a recommended contractor for Weber products. Whether it be work on new builds, existing properties or commercial projects, we aim to deliver the highest quality of workmanship at a fair price. ? Our clients goals are at the heart of everything we do. To ensure this, we promise a unique full method statement and risk assessment for each individual client. All our workers carry CSCS cards as proof that they have the appropriate training and qualifications for each project they undertake. Omni Drylining Ltd is covered by full Public & Employers liability insurance of up to £10m.
20 years in the Business… We specialise in Plastering & General Building and cover all aspects of it. Whether you need a small crack or need an extension built. We are the correct company. We offer and guarantee the best quality of work and competitive prices. We work all around London and have a large variety of portfolio available. We are a business where you can find all the services in one place. Choose us and do it once!
Deniz came promptly and did a good job repairing and plastering the wall. However as he had to take a radiator off it caused the water pressure to drop in the boiler and we were left with cold water. It would have been 5 stars if he had checked that before he left!
We are a team, we work with quality and guaranteed to be satisfied with I M D BUILDING SERVISES.
Good work.
MRH BUILDERS LTD
Happy to recommend these builders, They carried out some tiling work, which was harder than it sounds as it was 3 huge toilets in a church. They worked to budget and time scale, working hard to keep the timings to fit in with the demands of a busy church. They kept the place clean and tidy so the church could function. The work was finished to a high standard, and they had a good attention to detail. They communicated well and sorted out the problems with ease.
At First Choice Building Services, we specialise in high-quality roofing and building work for residential and commercial properties. With years of hands-on experience in the trade, we pride ourselves on delivering reliable workmanship, honest pricing, and professional results on every project. Our services include new roofs, roof repairs, flat roofing, fascias, soffits and guttering, chimney repairs, leadwork, repointing, rendering, brickwork, extensions, general building work, and full property maintenance. Whether it’s a small repair or a complete renovation, our team is committed to providing durable, high-standard work with excellent customer service from start to finish. We work closely with every customer to ensure all work is completed safely, efficiently, and to the highest possible standard. At First Choice Building Services, customer satisfaction is our priority, and we have built our reputation on trust, reliability, and attention to detail.
UNIQUE LOOK CONSTRUCTION LTD
External Wall Insulation
Unique Look Construction The story of these company start in 2024 after almost 10 years of working form somebody else i decided to start my own business . We deliver a large range of services and able to take care of the whole project . Happy to help with any work like -new build -extension -loft conversion -general renovation -landscaping -gardening Contact with confidence to carry out your project
JNA Plastering is new business based in Croydon. With over 9 years experience we conduct our self’s in a professional and respectable manor, we guarantee all of our work is competed to the highest standard and on time! We promise you will not be disappointed with out fair pricing and quality Finnish!
Jake and his team prepared and plastered our lounge, hall and guest bedroom and did an excellent job. Despite some unexpected difficulties, Jake went the extra mile to finish the job on time which we greatly appreciated, with 2 kids running around the house. We would definitely recommend him and would use him again ourselves.
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.
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