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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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Welcome to A2Z Constructions and Heating Ltd, the leading name in property refurbishment and maintenance across London. With a rich legacy of over 15 years, our company boasts a team of up to 20 dedicated professionals committed to delivering excellence in a wide range of services. Specializing in interior and exterior building refreshment, redecoration, and repairs, including loft conversions, A2Z is your one-stop solution for transforming your property into a space that reflects your vision and style. Our seasoned team brings a wealth of experience and expertise to every project, ensuring that each detail is meticulously crafted. From conceptualization to completion, A2Z Constructions and Heating Ltd is dedicated to providing top-notch craftsmanship, reliability, and personalized service. We understand the importance of your property, and our goal is to not only meet but exceed your expectations. At A2Z, we take pride in our commitment to quality. Whether you're looking to enhance your home's aesthetics, embark on a complete property makeover, or require timely maintenance, our comprehensive suite of services is tailored to meet your unique needs. We prioritize open communication, transparency, and adherence to timelines, fostering a seamless and stress-free experience for our clients.
MC Plastering
External Wall Insulation
Your Premier Plastering Service in Warwickshire At MC Plastering, we pride ourselves on delivering exceptional plastering services across Telford and the surrounding areas. With over 15 years of industry experience and City and Guilds level two diplomas in plastering, our skilled team is committed to providing top-notch plastering solutions for both residential and commercial clients.
Home repair uk are a small family run all trades company. We pride ourselves on top workmanship and the highest standard of work . We always put the customer first. We carry out an all trades aerobics which includes joinery, plumbing, plastering, painting and decorating , specialist services such as damp proofing, timber preservation and rot removal . All work is guaranteed. We cover the full of Scotland and are happy to travel to provide our services. All insurance work undertaken
Build Up Express
External Wall Insulation
BuildUp Express provides residential construction and refurbishment services in London and surrounding areas. Our company specialises in kitchen and bathroom remodeling, internal renovations and house extensions.
Raimcon Consultants
External Wall Insulation
We are artistic professionals in our job and we’re flexible… We try to finish our jobs in the lease amount of time and also would be very reasonable on pricing.
We always aim to keep our customers happy and we love recommendation we have over 20 years of experience and a very friendly respectable team we use the best equipment to ensure our customers get what they desire.
Came the same day as i posted the job and was very helpful. Payment was not wanted until i was completely satisfied with the work. The job was started next day and at the end of the day the garden was left clean and tidy. Information and advice was given but no pressure was applied to do more than what was needed. The job was finished a day later to a great standard and looks fantastic.
T&M Property Care
External Wall Insulation
At T&M Property Care, we are dedicated to delivering high-quality property maintenance, refurbishment and construction services for homeowners, landlords, developers and commercial clients. With years of industry experience, our skilled team provides reliable workmanship across a comprehensive range of building and property improvement services. From minor repairs to complete refurbishments, we manage every project with professionalism, attention to detail and a commitment to delivering exceptional results. We understand that every project is unique. That’s why we work closely with our clients to understand their requirements, provide practical solutions and ensure every project is completed safely, efficiently and to the highest standards. Our focus is on quality craftsmanship, clear communication and dependable service from the initial quotation through to final handover. Whether you’re renovating a single room, fitting a new kitchen, transforming a bathroom, carrying out structural improvements or undertaking a full property refurbishment, T&M Property Care has the expertise to deliver a professional finish you can rely on. Our reputation is built on trust, reliability and customer satisfaction. We take pride in delivering workmanship that stands the test of time while maintaining a clean, organised and safe working environment throughout every project. Our Services Building & Refurbishment * Full Property Refurbishments * Home Improvements * Internal & External Renovations * Commercial Refurbishments * General Building Works Carpentry & Drylining * Carpentry & Joinery * Timber Stud Partition Walls * Drylining & Plasterboarding * Ceiling Installation * Door Installation * Skirting Boards & Architraves Plastering & Rendering * Skimming & Plastering * Internal Rendering * External Rendering * Patch Repairs * Decorative Finishes Kitchens & Bathrooms * Complete Kitchen Installations * Bathroom Installations * Kitchen Refurbishments * Bathroom Renovations * Plumbing Alterations Plumbing & Electrical * General Plumbing * Electrical Installations * Electrical Alterations * Lighting Installation * Power & Socket Installations Flooring & Finishes * Laminate Flooring * Engineered Wood Flooring * Vinyl Flooring * LVT Flooring * Floor Tiling * Wall Tiling External Works * Landscaping * Fencing * Patios & Paving * Garden Improvements * External Property Maintenance Security & Smart Home * CCTV Installation * Security Camera Systems * Smart Home
We offer high quality building work all jobs ar fully insurance electric and plumbing coming with certificate jobs available for have look to understand how we work we always leave customers happy
Victor and his team did a great job with fitting the electrics in the kitchen and plasterboarding the kitchen. They left the place clean and was reasonable with the price. I will certainly use them again.
Hi, I’m Marni — a skilled and reliable construction professional with over 10 years of hands-on experience in new build construction and domestic building projects. I specialise in all aspects of brickwork, groundwork, extensions, garden walls, new builds, and driveways. Whether it’s managing a full project from start to finish or working as part of a team, I always bring a high standard of workmanship, clear communication, and a strong commitment to customer satisfaction.
Marni did an excellent job with my wall rebuild. He communicated well and did the job as agreed to a high standard and at a fair price. Thanks Marni.
S&B Building Solutions
External Wall Insulation
Hi I’m George Washbourn, owner of GW Plastering. I’ve been Plastering for 10+ years after completing a 2 year apprenticeship. I pride myself on leaving a professional & clean finish to all of my jobs, with friendly & knowledgable advice in all aspects of the trade. Over the years I’ve been Plastering I’ve become an expert in the following skills including: - k rend, eco rend, pro-rend - spray rendering - Sand & cement rendering - Traditional lime work - Internal plastering - Plaster-boarding - Floor screed - Skimming Please feel free to contact me with any questions, Thank you.
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
Brilliant. Great job. Tidy. Quick. And friendly guys to boot!
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.
builder from Ukraine living in UK
He was very good at the job and finished on time etc. The one thing I found slightly annoying was the urgency to finish the job and get the money, ie insisting that he paints the fence even though it was forecast to almost certainly rain that day and receiving multiple calls from his wife etc to our pressure. Overall though I am pleased with the end result and will use him again if given a chance
We can undertake any works related to domestic properties, rear extensions, underpinning, foundations, scaffolding, internal structural alterations, painting, tiling, partitions.
Really good job
FAC Construction LTD
External Wall Insulation
I am an experienced builder. i have built my business up through a good reputation. I have 21 years of experience within the building trade with qualifications within all aspects of plastering and rendering. I have a small team of skilled tradesmen, including roofers, carpenters, and plumbers, which enables us to take on a wide variety of jobs and complete them to a high standard.
Well established family run building company based in London,we have built a strong relationships with well known building societies across the London due to our quality and trustworthy service High quality levels of work in major building projects,we specialise in planning and design,project management and general building services
We offer property care and maintenance to a high standard.Reliable affordable and high quality services. We can offer you full bathroom renovation, kitchen renovation , floor fitting, plasterboard partitions , painting , carpentry works , plumbing works , electric works , etc Web site : gmppropertyservices.co.uk Instagram page : gmp_property_services
We're absolutely thrilled with our toilet renovation by Giannis and his team! Giannis made the process seamless - supplied quality materials and oversaw the work. Along with Bilal, they fixed a recurring leak by installing new pipes and installed new tiles, toilet, and vanity unit. They are professional, trustworthy, and they delivered an outstanding result as promised. Huge thanks to Giannis for giving us a stylish toilet and Bilal for his skilled installation - will definitely hire GMP again!
ALFRED CONSTRUCTION
External Wall Insulation
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