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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.
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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.
We are a Leeds-based company specialising in bathroom fitting, installation and renovation projects. Although experienced in different types of construction and building works, our main focus is bathroom fitting and tiling. If you’re looking for a complete bathroom installation, you’re in the right place. We’ve been offering our services to local homeowners and business owners during the past few years. Bathroom professionals: that’s who we are. Take a look at our recent projects if you want to learn more about us or request a free quote if you already have an idea of what you want. Wall and floor tiling is included in our estimates and we also provide wet room installation services. Each project starts with design and project management but you can ask for installation or supply only if you've already got the design figured out.
Lirim and his team were absolutely fantastic from start to finish. They turned up on time, provided advice and guidance, solved problems and did some tricky jobs in my period property to an excellent standard. I have done a couple projects and these guys are the sorts of people you are lucky to find! Good value for money and excellent communication. Highly recommend!
Greenwood Plastering
External Wall Insulation
Skilled plasterer with 20+ yrs experience. All aspects of plastering undertaken, modern to traditional, internal and external. Clean and tidy. Fully insured.
Hello, and welcome to Home Fixology – your friendly neighbourhood home improvement experts! At Home Fixology, we don’t just fix homes; we build trust through a personal touch that turns every project into a unique journey. If you want to see our growing portfolio of reviews, you can check us out on UK TRUSTPILOT: Home Fixology We're on FACEBOOK too: homefixologyltd Services we provide: Roof restorations: Repairing and refurbishing roofs to improve their structural integrity and appearance. #ProPERLA #Renotec Wall coatings: Applying coatings or finishes to exterior walls to protect them from weather damage and enhance their aesthetics. #ProPERLA Driveway restorations: Repairing and refurbishing driveways to improve their appearance and durability. #Resiblock Flat roof services: Repairing or replacing flat roofs to prevent leaks and water damage. #FirestoneRubberRoof Render repairs: Fixing and maintaining render on exterior walls for structural integrity and aesthetic purposes. Loft insulation: Installing insulation in lofts or attics to improve energy efficiency and reduce heating costs. #SuperFOIL Damp proofing: Treating and preventing dampness and moisture issues in buildings to protect against structural damage and mould growth.
I've been plastering for 35 years and I take great pride in my work.
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Expert, Reliable and Insured.
Done a very good job, and price was very reasonable.
Quinn construction Ltd general building works, specialize in Knockthrough, garage conversions and chimney breast and stack removal
Highly recommend Ben for plumbing and rendering work! He did a fantastic job — everything was completed to a high standard, on time, and within budget. Very honest, easy to communicate with, and offered practical solutions without upselling. His pricing was fair and transparent, and the quality of work speaks for itself. It’s rare to find someone so reliable and skilled these days — will definitely be using him again!
With a team of bricklayers, plasterers, roofer and joiner and on site manager full time we are a one stop builders able to complete all your building needs. We can help with architects, engineers and we only use one set of certified plumbers and electricians.
Fantastic turnaround time on this job. From coming out to assess the work needed, to completing the build, took less than 48 hours. The price was reasonable and I'd be happy to book other jobs with them and recommend them to others.
Five Star Construction is a family run business with the aim to provide affordable handyman and development works. We are full insured and all our operatives are fully trained for the work we carry out. Our friendly team are awaiting your call
Good value Very profession Quick and tidy workman Would definitely use them again. Regards Thomas
Adam Daniel
External Wall Insulation
starting with me as the owner, working in the field for 10 years here in the UK, the main job being painting and decorating, wood floor , tiles without sounding cliché, but I know to do everything in construction being at the same time a passion in everything I do. Very attentive to details and requirements. I have also 5 stars rate on My builder.
Urban Crest Homes LTD
External Wall Insulation
UC-Homes Ltd – Professional Home Improvements & Renovations UC-Homes Ltd is a reliable construction and home improvement company specialising in high-quality residential projects. We provide professional building services for homeowners looking to improve, renovate, or extend their properties. Our team has experience delivering a wide range of projects including bathroom refurbishments, home extensions, loft conversions, painting and decorating, and full property renovations. We pride ourselves on attention to detail, clear communication, and completing projects on time and within budget. At UC-Homes Ltd, we work closely with our clients from the initial consultation through to project completion to ensure the final result meets their expectations. Whether it’s a modern bathroom upgrade, a fresh interior repaint, or a full refurbishment, we aim to deliver a smooth and stress-free experience. Our services include: • Bathroom refurbishments • Painting & decorating • Property renovations • Home extensions • Loft conversions • General building works We are committed to delivering high standards of workmanship and excellent customer service on every project.
J and J Building Construction have been supporting customers for over 40 years. We take on all general building works such kitchens, bathrooms, loft conversion, drives, general plumbing, electrical, decoration, garden and patio works, roofing etc.
John and team completed a number of jobs for us to a high standard - plastering and decorating bedrooms, full bathroom refurbishment, gutter clearance. We are satisfied with the work, and they were professional and considerate during the job. John provided useful advice and quotes for various other prospective jobs.
An accomplished business where customer needs comes first. We are a dependable team with 25 years experience. Our aim is to attain positive communication with our customers as well as providing reasonable prices for all our clientele. Our specialties expand to various qualities, and we are profoundly able in achieving and carrying out plastering and rendering, painting, boiler installations, unvented cylinders, gas safe checks, bathroom renovations and all home improvements. Collectively, our main goal is to ensure our customer is content and that our work reaches their full expectations.
An appointment was rearranged for Lewis and his Adrian to come and give me a quote for my driveway. They arrived on time.
We are here to save your home from water damage with peace of mind, We have been about for many years to secure your first defense from bad weather entering your home
Hi my name is Agron I am professional plasterer since 2007
Caring, clean and efficient. = Good service
Elevate your outdoor space with BH Home Services Ltd. We specialise in: Decking: Wood and composite options for a stylish, functional space. Fencing: Privacy and curb appeal in perfect balance. Slabbing: Transforming patios, walkways, and driveways. Gardening: Bringing vibrancy and charm to your landscape. Why Us? Expertise: Skilled craftsmen with years of experience. Quality: The finest materials for lasting results. Personalization: Tailored solutions for your unique vision.
These guys were excellent; they quoted a good price, turned up when they said they would, did a good job and tidied up after themselves. Very pleasant and helpful throughout. Happy to recommend.
Aspray (Luton)
External Wall Insulation
I take care of managing your property damage insurance claim so you can carry on with everyday life or running your business. Your home is your sanctuary. Fire, flood, water damage, storms, impact or criminal damage can threaten that. If the worst happens, I can negotiate a fair settlement from your insurer and then return your property to its original condition. There is no charge to policyholders for the Aspray service provided Aspray can appoint and project manage the contractors who carry out the repair works, as Aspray is paid by the insurance company for any repair or reinstatement works they complete. Please note, any excess stated within your policy wording, will still apply.In the event you need to make a claim, wouldn’t you rather have one point of contact looking after your interests rather than dealing with various different parties? If you are a business owner, offering Aspray’s service to your clients could enhance your chance to gain new customers, retain existing customers and add an extra income stream to your business whilst giving you an edge over your competitors. Aspray (Luton) is a trading name of (Maynard’s Property Services). Aspray Limited is authorised and regulated by the Financial Conduct Authority
A family run local business trading in North wales for over 20 years.We undertake all aspects of home improvements from a simple tap swap to full house refurbishments. Customer satisfaction is our number one goal!
From the very first conversation, Karl has been great to deal with. Any discussions about the job were clear and I felt confident throughout the time the job lasted. The project started on time and despite the weather the job was completed in good time. Plus an excellent result as well. Very pleased.
Hello my name is George , I start construction in 2014 ! What I can tell you if you need a good handy man in your house you can contact me ! I can help you whit New kitchen New bathroom Plastering Tile Flooring Painting and decorating Gardening I have my own gas engineer And electric engineer My friend have windows company base in Dunstable ! Whit respect George !
Great paint job, done on time and to schedule on a difficult wall to access at height. 50% payment before and 50% on completion. Very friendly and open. Would recommend.
Rated People
External Wall Insulation
We take proud in our work .our priority its our costumer.We undertake all kind of work from small to big projects.For a free estimate do not hezitate to contact us.
Very efficient
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