Find a local external wall insulation specialist near me
Over 10,000 rated tradespeople
are ready to help you get your job done
Over 3 million happy homeowners
have found a quality tradesperson
Over 1 million ratings
with 88,000 5* ratings in the last 12 months
Join our group of happy customers
Thousands of 5 star reviews
Read real reviews from customers about their service experiences.
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.
Browse External Wall Insulation specialists
Take a look at our External Wall Insulation specialists profiles, read reviews and request quotes directly.
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.
Find a local external wall insulation installer
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.
ASM contracts roofing & building services is a family run business based in Galston. We work throughout Scotland providing a first class service and attention to detail in every job we do, from a gutter clean to full new roof installation we appreciate small jobs along with larger projects. We aim to build our reputation off our customer reviews so our priority is to make a good lasting impression on everyone we work for. We offer a range of services such as ??New roof installation & repairs (slate,tiling & flat roofs) ??Roughcasting & render ??UPVC roofline ??Guttering repairs or replacement ??Exterior roof & wall cleaning & COATINGS ??Emergency roof repairs ??Rubber flat roofing ??Dry verge & ridge systems ??Leadwork ??Sandstone restoration ??All aspects of Brickwork ??conservatory roof conversion ??General building
I have ten years experience of all aspects of plastering. High standard of work,time keeping and cleanliness is paramount as a company. Prompt proficient response
Fabulous job, very tidy and high quality finish. If you have a plastering job he is your man. Fair price also.
R&R Builders is a leader in providing value-added construction services to our customers by creating a successful partnership with them throughout the construction process. Our pledge is to establish lasting relationships with our customers.
R&R done an excellent work replaced the whole bathroom including the flooring. Very professional, punctual and gets the job done at a reasonable price. Highly recommend him to anyone who is looking for bathroom work. Thank you, Eden & Kristian
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.
'%3e%3cpath%20fill-rule='evenodd'%20clip-rule='evenodd'%20d='M12.5%2020.392a1%201%200%2001-.54.888l-5.274%202.73a1%201%200%2001-1.435-1.109l1.494-6.588a1%201%200%2000-.306-.964l-4.723-4.254c-.65-.586-.287-1.666.585-1.74l6.105-.514a1%201%200%2000.846-.629L12.5%200v20.392z'%20fill='%23F7DB34'%20/%3e%3c/g%3e%3c/svg%3e){kind=small}
“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.”
Our team has the skills, experience, qualifications, and desire to ensure we deliver a high standard of workmanship and complete customer satisfaction. cescoating_co_uk
Mbg builders ltd is a professional building Company. We have been helping domestic Clients across the West London since 2012. We specialists in… Bathroom installation and repair Electric and plumbing and heating Painting and decoration Carpentry work Plaster and skimming Property maintenance Tiles floor and walls Emergency drainage Electric underfloor heating Also we provide very reasonable price Basins . Taps .bathtub.shower tray . Radiators.tiles .showers.all bathroom Material.
I recently had the pleasure of working with MDG Building, and I can’t recommend them highly enough. From the start, they were professional, and clearly very knowledgeable. They not only installed a shower screen, vanity and toilet but also took the time to help with an unrelated problem I was having installing my fridge—something they absolutely didn’t have to do, but stepped in to assist anyway. What really stood out was their commitment to doing the job right and there willingness to go the extra step!
Sinevir Construction is your trusted partner in construction with over 15 years of experience. We offer a full range of services, including plumbing, tiling, bricklaying, plastering, carpentry, bathroom installations, and building homes from the ground up. We guarantee high quality, adherence to standards, and timely project completion. Our team of professionals uses the best materials and advanced technologies to ensure durability and reliability. We also provide competitive prices, offering an excellent balance of quality and cost. We value open collaboration and consider all your preferences at every stage of the project. Clients choose us for our professionalism, accuracy, and commitment to quality. With Sinevir Construction, your construction dreams become reality, backed by superior results and the best fair pricing.
Cannot rate this company highly enough; they were brilliant. The quality of the work was great; they took pride in what they did. They came and quoted, and provided a clear statement of work on what we agreed. They completed the work quickly. Turned up when they said they would, and if they couldn't, they let me know. Really good communication. They were so polite, courteous, and just generally really nice people to have in your house.
At Elizrose Limited, we pride ourselves on our quality of service & the values we work by on a daily basis; wanting our customers to feel at ease, informed & happy.
Adam and Dan have been better than expected with respect to time, flexibility and the quality of the work they are carrying out for us. We have been lucky to find a business that deliver exactly what we want. Thanks guys. We would highly recommend their services.
Hi. We’ve been offering a decoration service for over 12 years now. Our main aim is to provide a high standard of service and workman ship that meets and exceeds customer expectations. We’re happy to help plan all stages of the work and have a good relationship with a network of other trades if needed, to help complete a project smoothly. We look forward to hearing from you
James was brilliant, did an excellent job. So pleased with my new room. Reliable, on time. Outstanding workmanship. Already asked for a quote on next room and recommended to family and friends. Thankyou
I've been working in the maintenance Industry for the past 19 years and i've worked for 6 different councils in London, I've been trading since 2012 with this company.
Outstanding work and highly recommend Lucky of A&L. Impressed with their professionalism, attention to detail and general tidiness. My large garden was overgrown and untidy and was pleasantly surprised at the work and outcome carried out by A&L.
We are very proud to offer our Building Services in Cornwall . We have 30 yrs of work experience in Cornwall. We always give our customers a fixed start date, always turn up and we also give finishing dates on all works. No Builders, locally works tidier than us.
Great job done , would hire again , well recommended
Hawk Building & Landscaping
External Wall Insulation
We have 7 years experience in the construction & landscaping trade. From single story extensions, to building walls, flagging & fencing are just some of the services we offer. We always strive to achieve the highest level of customer satisfaction.
We take on all aspects of plastering work from artex removal ceiling replacements re-skims rendering we are Manchester based An work within greater Manchester
Completed the work and happy
Hi I�m Roly from RA Building Services ,I�ve been a general builder in the trade for over 20 years ,I cover most trades including renovations ,plastering ,painting .Customer satisfaction is extremely important to us .We strive to give an excellent job for an affordable price .
Very fast, very happy with the work, they left everything clean. Thank you
With years of experience in the building industry and a strong track record of positive client feedback, we specialize in delivering high-quality renovation and construction projects. From full kitchen and bathroom renovations to loft and garage conversions, home extensions, and bespoke garden rooms or offices — we have the expertise to bring your vision to life. Our focused, hands-on approach means every project receives our full attention from start to finish. We don’t split our time across multiple jobs — instead, we commit fully to each client to ensure efficiency, clear timelines, and exceptional results. We pride ourselves on our strong work ethic, where customer satisfaction always comes before profit. We offer free consultations and maintain clear, consistent communication throughout every stage of the project. Our goal is simple: to deliver outstanding work and ensure our clients are fully satisfied at every step.
Christian Badacin
External Wall Insulation
Experienced builder with over 20 years in construction, offering high-quality renovation and building services. I specialise in plastering, decorating, flooring, tiling, and full property refurbishments. I am known for reliability, attention to detail, and competitive pricing. I always aim to complete work to a high standard and keep clients satisfied. No job is too small or too big.
Premier Plastering Contracts
External Wall Insulation
We are Premier Plastering Contracts. we are experts in all areas of Plastering and Rendering. Here to provide a professional reliable service every time.
We are a family run building company on Salisbury Plain with many years experience.We take on all trades and no job is too small.Our aim is job satisfaction,efficiency,cleanliness in any project we carry out small or large and good customer relations
Absolutely first class. There are no other ways to describe it. Consummate professionals, superb communication and above all else, truly honest. I cannot recommend them highly enough. Finished our extension before their own deadline and to the highest of standards. Thank you gents.
'%20rx='20'%20/%3e%3cg%20fill='%23FFF'%3e%3cpath%20d='M29.376%2016.914c-.555%200-1.006.454-1.006%201.013v37.416c0%20.578.472%201.014%201.097%201.014h34.109a1.007%201.007%200%200%200%20.972-.83%201.012%201.012%200%200%200-.161-.76l-6.446-9.416c-.375-.548-.567-1.085-.586-1.642-.034-.977.516-1.952%201.402-2.483%204.8-2.878%205.808-7.575%205.808-11.009%200-7.335-5.925-13.303-13.207-13.303H29.376ZM63.594%2059.75H29.467c-2.505%200-4.467-1.936-4.467-4.408V17.927c0-2.43%201.963-4.408%204.376-4.408h21.982c9.14%200%2016.577%207.49%2016.577%2016.698%200%205.879-2.46%2010.687-6.944%2013.607l6.17%209.017c1.37%202.002.868%204.752-1.12%206.132a4.336%204.336%200%200%201-2.44.778h-.007Z'%20/%3e%3cpath%20d='M38.767%2027.797c0-.749.603-1.357%201.347-1.357h6.427c3.979%200%206.426%201.72%206.426%205.099v.123c0%203.132-2.325%205.098-6.365%205.098h-3.848l-3.985%203.998V36.76h-.002v-8.963'%20/%3e%3c/g%3e%3cpath%20fill='%23FFF'%20fill-rule='nonzero'%20d='M18.176%2069.2h2.156v3.878h3.976V69.2h2.156V79h-2.156v-3.934h-3.976V79h-2.156v-9.8Zm16.428%207.98c.43%200%20.826-.08%201.19-.238a2.72%202.72%200%200%200%20.931-.658c.257-.28.457-.604.602-.973a3.21%203.21%200%200%200%20.217-1.183V74.1c0-.42-.072-.817-.217-1.19-.145-.373-.35-.7-.616-.98a2.96%202.96%200%200%200-.945-.665%202.873%202.873%200%200%200-1.19-.245c-.439%200-.838.08-1.197.238-.36.159-.667.378-.924.658s-.457.604-.602.973a3.21%203.21%200%200%200-.217%201.183v.028c0%20.42.072.817.217%201.19a2.959%202.959%200%200%200%201.554%201.645c.36.163.758.245%201.197.245Zm-.028%201.988a5.343%205.343%200%200%201-2.086-.399%205.187%205.187%200%200%201-1.645-1.078%204.823%204.823%200%200%201-1.078-1.596%205.029%205.029%200%200%201-.385-1.967V74.1c0-.7.13-1.356.392-1.967a5.075%205.075%200%200%201%201.085-1.61%205.05%205.05%200%200%201%201.652-1.092%205.395%205.395%200%200%201%202.093-.399c.756%200%201.451.133%202.086.399a5.187%205.187%200%200%201%201.645%201.078c.462.453.821.985%201.078%201.596.257.611.385%201.267.385%201.967v.028c0%20.7-.13%201.356-.392%201.967a5.075%205.075%200%200%201-1.085%201.61%205.05%205.05%200%200%201-1.652%201.092%205.395%205.395%200%200%201-2.093.399Zm8.14-9.968h2.324l2.576%204.144%202.576-4.144h2.324V79h-2.142v-6.398l-2.758%204.186h-.056l-2.73-4.144V79h-2.114v-9.8Zm13.152%200h7.392v1.918h-5.25v1.988h4.62v1.918h-4.62v2.058h5.32V79h-7.462v-9.8Zm13.866%209.94a6.49%206.49%200%200%201-2.198-.385%205.817%205.817%200%200%201-1.96-1.183l1.274-1.526c.448.364.908.653%201.379.868.471.215.987.322%201.547.322.448%200%20.796-.082%201.043-.245a.771.771%200%200%200%20.371-.679v-.028a.85.85%200%200%200-.077-.371.778.778%200%200%200-.294-.301%203.079%203.079%200%200%200-.602-.28c-.257-.093-.59-.191-1.001-.294a12.201%2012.201%200%200%201-1.344-.406%203.787%203.787%200%200%201-1.022-.553%202.237%202.237%200%200%201-.651-.819c-.154-.327-.231-.733-.231-1.218v-.028c0-.448.084-.852.252-1.211.168-.36.404-.67.707-.931a3.183%203.183%200%200%201%201.085-.602c.42-.14.882-.21%201.386-.21a5.86%205.86%200%200%201%201.981.322%205.743%205.743%200%200%201%201.659.924l-1.12%201.624a7.1%207.1%200%200%200-1.288-.707%203.292%203.292%200%200%200-1.26-.259c-.42%200-.735.082-.945.245-.21.163-.315.366-.315.609v.028c0%20.159.03.296.091.413.06.117.17.222.329.315s.376.182.651.266c.275.084.623.182%201.043.294.495.13.936.278%201.323.441.387.163.714.36.98.588.266.229.467.497.602.805.135.308.203.677.203%201.106v.028c0%20.485-.089.917-.266%201.295a2.66%202.66%200%200%201-.742.952%203.353%203.353%200%200%201-1.134.588%204.924%204.924%200%200%201-1.456.203Z'%20/%3e%3c/g%3e%3c/svg%3e)
Get our app for homeowners
- Send messages and get notifications from tradespeople
- Add photos to get more accurate quotes
- View tradespeople's profiles