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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.
As a full time firefighter I compliment this role by being a fully qualified plasterer with certificates up to NVQ level 3. I also hold a teaching qualification in plastering. I pride myself on excellent customer service and working to a very high standard. I have been plastering for over 25 years and originally started out working for my fathers company doing a time served apprenticeship before setting up my own business. The projects I have worked on have ranged from managing teams of plasterers for high profile developers such as Charles Church and Bryant Homes. Restoration work for English Heritage and working with private individuals on domestic work ranging from skimming a small ceiling to renovation and extension projects. Proficient in the installation of Dryrod as a rising damp solution. NVQ level 3 diploma in plastering (construction) - solid (full)(QFC). VTCT level 3 preparing to teach in the lifelong learning sector (QCF).
Excellent quality of work to render around new window. Good communication throughout. Very reliable and recommended.
SD Plastering
External Wall Insulation
The finishing touch to any building work is plastering, this is a highly skilled trade. Established in March 2000, S.D. Plastering is a family run business, led by founder Shawn Davidson With over two decades of experience working as a sub- contractor in both the commercial and domestic sectors. We cover plastering, rendering, pebble dash and home improvement works such as Dry Lining , plastering, ceiling setting out and plaster boarding stud walls setting out ,skimmng internal rendering external rendering, painting walls ,ceiling always put out hard work as quality is perfection. Finish plasterboard and plastered ceiling. S.D. Plastering take great pride in working in a tidy manner and aim to keep disruption to a minimum. We also take great pride in providing the highest quality workmanship at a fair price, whether your requirement is a small patch, entire house or a commercial property.
SAS RESOLVE LTD
External Wall Insulation
GETTING YOUR PROPERTY REPAIRED IS OUR NO.1 PRIORITY. We are Concept Claims Solutions Buckinghamshire. An end to end project management service to return residential and commercial premises back to their pre-loss condition following our tried and tested processes and systems. With over 20 years of experience; Our system allows the complete cradle to grave management of both a property insurance claim and private renovation job from first notification through to settlement. As Principle Contractors, we undertake all aspects of property repair, rectification and renovation. SAS Resolve Ltd trading as Concept Claims Solutions (North Bucks) is an Appointed Representative of Citrus Compliance. Citrus Compliance is a trading name of Andrew Smith which is authorised and regulated by the Financial Conduct Authority. Concept Claim Solutions (North Bucks) is a franchise owned and operated under license, with a registered name of SAS Resolve Ltd. Registered Address: Jubilee House, East Beach, Lytham St.Annes, Lancashire, United Kingdom, FY8 5FT. Registered in England. Please note that photos are for illustration purposes only.
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
We are a small family run business, our services include New builds, lofts, extensions, refurbs, we also take on small refits kitchens, bathrooms, gardens, structural alterations and ground works, plumbing and electrical. We aim to provide a comprehensive build package under one umbrella. Since opening our business in 2016 our main principle is "never cut corners or standards". We have managed to grow the business in the last few years immensely and establish ourselves as a recognised name. We aim to minimise stress for our clients by offering our expertise in all areas of the construction process and undertaking comprehensive project managing services with design consultation service also available throughout your project. We can provide all the services above by our own in-house team not 3rd parties or sub contracting. If you would like to know more about the work we do or would like a quotation for a project, please send us a message from the contact page or give us a call. We aim to respond to all queries within 48 hours.
i used julian for the job i wanted done. it was completed in a couple days. he was on time and conscientious.really happy with the result.
RM Roofing & Building Services
External Wall Insulation
Rm roofing & building services is a family run business with over 35 years experience in all aspects of roofing and building services all of our work is fully insured all of our tradesman are fully qualified
Reliable builder with over 20 years of experience in domestic and commercial building.
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“Arber Pro Finishes is a construction and finishing company with over 8 years of experience. We specialize in high–quality painting, plastering, and laminate flooring services. Our team is committed to reliability, precision, and delivering results that last.”
Sattari UK Ltd
External Wall Insulation
Family running construction company with 10 year of experience in the uk market.
Thank you Mainline for your advice, quick and polite customer service and beautifully decorated to all the room that I had asked to be decorated. I would call you again, A happy satisfied Customer
Toma Lup
External Wall Insulation
We are a small group of professional builders with 15 years experience specialized in building and refurbishment properties for people that don’t want a lot of hassle and headache when dealing with builders, so we are providing all the services from start to finish and ensure everything is done to high standards while keeping the client satisfied on the price.
Albertq
External Wall Insulation
Landscaper painter and decorator plasterer garden fencing and paving
Hi My name is Conor and i am a member of the chartered institute of builders which is the highest accolade achievable within the industry, I also have an nvq 6 in construction which is the equivalent to a masters degree. We are a well established company since 1999 and have a vast experience in painting and decorating, kitchen fitting, bathroom fitting and building refurbishment, roofing, listed building refurbishment, reactive maintenance loft conversions and extensions. We guarantee you the utmost service as can be verified by our previous clients testimonials We offer a one point of call for all trades for domestic and commercial customers .We previously completed painting/decorating , kitchen fitting , bathroom fitting and refurbishment works to listed buildings, schools, Universities ,hotels, restaurants , pubs, Hospitals, shops, nursing homes along with many prestigious new builds, bcp contracts and private works. We provide a 1 point of contact, complete service with all our other trades if required. Resulting in the client only having to deal with one person, who project manages the team throughout the course of the works. We also provide a kitchen/bathroom fitting service ,and a reactive maintenance package for landlords and commercial customers and have a vast portfolio having completed over 500 projects.
Emerald Builders removed old carport roof & replaced with new. Courteous & competent staff, left tidy site & did a grand job extending the life of the car port, thank you.
Welcome to AWARDED BUILDING SERVICES we are here to help you look after your home. Building and home improvement its about helping you to make your home a better place to live, and more valuable if u decide to sell up one day. We are specialist with 5 star ratings, we all so a member of the trust mark,
We’re so happy we went with Awarded Builder for our new bathroom. Heron was professional, friendly and really easy to deal with. His work was to an excellent standard and he does a lot of trades! Plastering, tiling, painting and plumbing - all done really well. The overall effect was great, his attention to detail really shows. Heron even helped me out with fitting a mirror cabinet in another bathroom. Really appreciated his help there! Would highly recommend Awarded Builder!
Hi I’m a plastering contractor in stockport, I do all aspects plastering work to new builds board and skimming, krend, damp proofing to domestic reskimming etc. Everything gets done to a high standard. Perfection is only just good enough
Joe and his team were very friendly and professional. Joe himself oversaw his team and made sure he kept up his end and was tidy along the way. Can’t recommend enough. He also facilitated extra work that was not initially agreed and still kept a very timing on the additional work.
DBCKG LTD
External Wall Insulation
At DBCKG, our goal is to not only help you design and build We are a full-service design/build company with a wide range of experience. We can help you with all phases of new home construction or remodeling: finding/procuring suitable land, architecture and design, building your home and landscaping your yard. Our excellent reputation and long list of satisfied clients attest to our superior. craftsmanship, attention to detail, clear communication, honesty and integrity. Just ask for our client reference list. we will give you 5 yaers guarantee for all major job.
We are a family run business with over 10 years experience in the building trade, we are very trust worthy and reliable always accomadating the customers needs. We specialise in all trade s from plumbing, electrical, carpentry ,full renovation s etc to pa
Lorenzo Building Services
External Wall Insulation
We are a hard working team with great experiance
all plastering work available over 20 years experience in the trade .friendly and efficient .here to help with your needs . Thanks lance
I was impressed with the quality of the work and the efficient manner that it was undertaken, It was a job well done.
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
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