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The quick way to find a local External Wall Insulation specialist in Gwynedd

There are 31 External Wall Insulation specialists in Gwynedd, and last month we helped homeowners get quotes for their home improvement jobs.

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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!

Latest homeowner review

Reviewed by Phil on 30/9/2025

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.

Feel Free to CALL MY DIRECT DIAL NUMBER above. as I am always happy to chat. PLEASE NOTE: We only specialize in external wall coatings, rendering and/or repairs. We Don't carry out internal painting or plastering. We are a national family run business offering a local service with over 40 years' experience in all types of exterior renovations repair, render, silicone, acrylic and more. We can offer virtual quotes initially and all works come with a 15 year backed guarantee which many local tradesmen cannot offer. At The Wall Doctor, we aim to cure all the concerns you may have regarding the exterior of your property. We understand the damage British weather places on your exterior walls. and we have the cure for you,! We will always give you a virtual quote first and send you a detailed video report and proposal in the first instance. If your home requires an appointment with one of our Wall Doctor surveyors, feel free to make an appointment with us to receive a no obligation diagnosis. After treating countless homes, we are exceptionally experienced within our field of Wall coatings and renders. we can cure any issue that concerns you. The services we offer ensure your home is protected during the harsh British winters and wet weather and will always look at its best. We offer a range of products and prices available to all scenarios, so don’t miss out on our no obligation diagnosis and various other services. We are not the only Wall coating company in the UK, however we strive and succeed to be one of the best for customer interaction and satisfaction to any work performed on your property.

Latest homeowner review

Reviewed by Bill on 18/6/2025

Wall Doctor have now sent a very professional external coatings applicator and he has repaired the paintwork to our satisfaction. This has taken some time to resolve (Partly due to weather constraints) but we are now confident that the job has been done properly.

North West Render Systems Ltd - We have the experience & expertise in rendering the exterior of your property. Using our specially selected coating systems, we can provide protection for even the most exposed properties.

Latest homeowner review

Reviewed by Jacky on 11/11/2019

Still waiting for quote!

We are a family run business with over 40 years experience in exterior weatherproof coatings and renders. Our 2 coat rendering system is available in an extensive range of colour choice which suits any property style or customer preference. We are able to offer our virtual quoting system without initially visiting your home with us also being able to attend your property to discuss your options if required. We only use the finest products and Wethertex have been manufacturing in the UK for over 45 years with their high-performance wall coatings. Our confidence in the products makes it effortless in offering our 15 year guarantee. An insurance backed guarantee is also available if required which many local “one man traders” are unable to offer. We have carried out works for thousands of satisfied customers over the years and can provide example properties in your area for reference purposes. We Specialise in:- . Two coat silicone render system in a colour of your choice . Render repair system in a colour of your choice . Insulation boarding with polymer render finish in a colour of your choice . Stopping penetrating damp Our surveyors and office staff are always on hand to offer advice and talk you through the services we offer. Insurance quotes (there is a £250 returnable charge upon receipt of deposit) Our minimum order value is for 9x3 metre (30ft x 10ft) coverage Finally, our Rated People ratings speak for themselves, many of which are 5* **Please note we are unable to offer Internal plastering, Internal painting or decorating**

Latest homeowner review

Reviewed by K on 28/10/2024

I recently had some render work done on my house by Spraytex, and I couldn't be happier with the results! The quality of the work is outstanding, and it has truly transformed the look of my home. Debbie & Siobhan provided good customer service throughout the entire process, answering any questions I had. Additionally, the work area was left very tidy after each day, which I really appreciated. I highly recommend Spraytex and Gaz (Installer) for any rendering needs!

Expert Damp Proofing & Property Preservation Services Home Building & Surveying Company is a leading provider of damp proofing, wall coatings, and property preservation services across the UK. With over a decade of experience, we specialise in protecting residential and commercial properties from moisture damage, mould growth, structural decay, and woodworm infestations. Our team of certified professionals ensures every project is completed with precision, using cutting-edge techniques and high-quality materials to enhance your property’s durability, appearance, and value. Why Choose Home Building & Surveying Company? - Over 10 Years of Industry Experience - Certified Damp Proofing Specialists - Tailored Solutions for Homes & Businesses - Guaranteed Long-Lasting Results - Competitive Pricing & Free Consultations Comprehensive Property Protection Services 1. Damp Proofing Solutions Moisture can cause severe damage to your property, leading to mould, decay, and structural instability. Our damp proofing services prevent water ingress and rising damp, ensuring a dry, healthy indoor environment. 2. External Wall Coatings Enhance and protect your home’s exterior with our advanced wall coatings. These weatherproof solutions defend against harsh UK weather, preventing cracks, damp penetration, and fading while improving kerb appeal. 3. Basement Waterproofing & Tanking We offer expert basement tanking services to prevent water damage and create dry, usable underground spaces. Whether converting a basement or preventing flooding, our waterproofing solutions provide peace of mind. 4. Mould Removal & Prevention Mould not only affects property aesthetics but also poses health risks. Our mould remediation services eliminate mould growth and prevent future infestations, ensuring a safer and cleaner living space. 5. Woodworm Treatment & Prevention Protect wooden structures from decay with our specialised woodworm treatment services. We use industry-approved solutions to eliminate infestations and prevent future damage to beams, flooring, and furniture. 6. Condensation Control Solutions Excess condensation can lead to damp walls, peeling paint, and mould growth. Our ventilation and insulation solutions help regulate indoor humidity, creating a more comfortable and damage-free environment. At Home Building & Surveying, we are committed to protecting and enhancing your home or business with industry-leading damp proofing and property preservation services.

Latest homeowner review

Reviewed by Roger on 4/4/2025

Ian came round to take a look at a damp patch that had started showing up on one of the utility room walls. He turned up on time, was really friendly, and clearly knew what he was talking about. He gave everything a proper check over and explained what was likely going on in a way that actually made sense. He didn’t try to make a mountain out of a molehill or push for any unnecessary work—just gave honest, practical advice on what to do next. Really appreciated how straightforward and helpful he was. Would

Chameleon Refurbs have over 25 years experience in all types of Building Refurbishments so choose Chameleon Refurbs with confidence

Latest homeowner review

Reviewed by Isaac on 29/11/2025

All aspects of plastering Years experience Competitive honest prices References given if asked — Check out my pages LT Plastering Services / Facebook @ltplastering_ / Instagram

Latest homeowner review

Reviewed by R on 15/5/2023

CGR Property services is a family run business with over 20 years of experience in the building industry. Specialising in fireplaces creation, chimney repairs and plastering for many years we have developed a diverse skill set in structural building work which uniquely qualifies us to carry out smaller building work inc , property repairs and small convertions like garages in office spaces or playrooms along with many other small projects Whether it's a minor repair or a full home renovation we can deliver professional skills at a fair price. It's our highest priority to get the job done right the first time on every assignment. We provide a full consultation to explain avaliable options so that you can choose the service that's right for your home. We strive to meet your projects needs and save you time and money! Now offering full groundworking and patio construction services

Latest homeowner review

Reviewed by Catrin on 14/7/2023

Very good and quick. Phoned up at 10am and had someone out looking at the job less than 2.5 hours later. Chris was very helpful and happy to answer any questions.

Ando Plaster

External Wall Insulation in Gwynedd

We take on all aspects of plastering work from artex removal ceiling replacements re-skims rendering we are Manchester based And work within greater Manchester

Latest homeowner review

Reviewed by Hazel on 9/2/2026

Did a brilliant job. Very professional and reasonably priced. Would not hesitate to recommend.

NTB DAMP PROOFING

External Wall Insulation in Gwynedd

I've been in the building trade for 38 years, I have been doing damp proofing for the last 18 years, im dedicated to the work we carry out so that my customers have 100% satisfaction. All our work is guaranteed for 30 years.

Latest homeowner review

Reviewed by Carol on 9/2/2026

Really pleased with the sound proofing work Nigel has done. I was experiencing daily noise from the tumble dryers and vibrations & noise from the washing machines in the Communal Laundry serving 40 flats . The laundry is situated below my flat . Following the work Nigel has done for me, I can no longer hear the tumble dryers. The noise & vibrations from the washing machines has decreased by at least 80%, which is great and more than I expected due to the nature of how some other residents use the laundry.

Paul Hughes

External Wall Insulation in Gwynedd

We do all aspects of Plastering and rendering fully qualified and insured Damp proofing Limelite Dryzone Rendering Pebble dash K rend Parex Weber External wall insulation Internal wall insulation Room in roof

Latest homeowner review

Reviewed by Debbie on 2/8/2024

This man did a great job and I've since had him do my bathroom and then a massive job in my lounge. Immaculate work. Great personality. Always eager to make his customers happy. Unfortunately I've lost his number recently so if you see this Paul, please get in touch.

A.Gallagher & Son

External Wall Insulation in Gwynedd

A. Gallagher & Son provide services across North and Mid Wales and the North West. We employ only local specialist tradesmen for slating, tiling, flat roofing, lead work, fascia and gutters and solar PV. We are able to take on works of any size to the most complex designs and specifications. Our Roofing Services Include: New Roofs Roofing repairs Re roofing Slate and materials Solar panels Other general building Get FREE quotes and friendly service. Members of National Federation of Roofing Contractors Velux approved installers We believe high quality standards of work is an essential key in the companies growth and development.

Latest homeowner review

Reviewed by MALCOLM on 6/5/2025

At North West Plasterers, we combine years of experience with a passion for precision to deliver high-quality plastering solutions across Greater Manchester. Whether you’re a homeowner or a business, we offer a full suite of services including loft hatches with stairs, skimming, artex coverage, media walls, dry lining, rendering, floor screeding, timber partitions, and polished finishes.

Latest homeowner review

Reviewed by San on 14/1/2026

Hi welcome to streamline plastering. A company that delivers superior wall coatings.its been my passion since a child to become the plasterer I am today with over 30 years experience both on site work and domestic projects. So For all your plastering needs look no futher with high end finishes to all our projects .undertaken with care pride and the passion that drives me every day I'm honoured to offer you streamline plastering.

Latest homeowner review

Reviewed by Martin on 4/12/2025

Full hall needed doing before ceiling fell in on us Pete came early just got on with job no hassle looks great

PEP CONSTRUCTION LTD

External Wall Insulation in Gwynedd

At P.E.P Construction ltd, we offer a wide verity of service in the construction sector, from anything as small as you can think to as big as you want and as high end From groundwork’s to Extention all the way to new builds look no further, we have a team of trades all under one roof l, with a professional and friendly service start to finish look no further

Latest homeowner review

Reviewed by damian on 5/12/2024

We are a highly professional outfit with a small base of quality tradesmen to provide services of painting and decorating and all aspects of building work and offer quality and service to all customers at a good competitive rate.

Latest homeowner review

Reviewed by Simon on 18/7/2025

Completely transformed our bathroom. Ian and his team have done an amazing job. From start to finish, talking us through what was being done. Helped us pick out a bathroom suite. Can't recommend them enough.

BH Home Services Ltd

External Wall Insulation in Gwynedd

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.

Latest homeowner review

Reviewed by Graham on 6/8/2024

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.

MASTER

External Wall Insulation in Gwynedd

We are a period/listed property restoration company. We specialise in traditional materials and methods. Often our work is to Identity and rectify damp issues which arise from the use of modern materials on period properties where breathable materials are imperative for the buildings features and characteristics to function. Once the breathability of the property is compromised damp issues will occur. We offer damp assessments for your property with a full report to guide you in the right direction eradicating current and future damp issues. Our assessments cost: ÂŁ140 including guidance and a full report which details the source(s) of the damp & mould, how to eradicate the issues. - Lime rendering & plastering with horse hair. - Lime pointing. - Masonry repairs. - Paint removal using the Thermatech hot steam cleaning system. - Brick/stone feature walls. - lime wash - Breathable Painting. - lime plaster/render We often work with conservation officers from the authorities to ensure our works are of the highest standards.

Latest homeowner review

Reviewed by Alexandra on 10/5/2025

Marcus and his team did a great job for us reseating our period porch stone paving and repointing with lime mortar, including matching a reclaimed stone slab to replace a broken one

Friendly business that covers all building work over North Wales, we take pride in our work and all work are done to a top standard

Latest homeowner review

Reviewed by Judy on 4/2/2026

Excellent work. Reasonable price Friendly and respectful of property. Thank you Iwan

MCE Plastering

External Wall Insulation in Gwynedd

MCE Plastering is a trusted, rated and reliable team of plastering/ rendering specialist. We have been providing customers in the North-West of England and surrounding areas with a high-quality finish for over 5 years. Whether it's a small repair or complete install we work hard to ensure that all of our staff work to high standards using the best techniques and products for the job. Why not get in contact for your quote today! I’m

Latest homeowner review

Reviewed by Alan on 21/10/2025

Welcome to LSB PLASTERING SERVICES we offer a wide range of plastering work and are happy to work with our customers to get the job completed to top standard.

Latest homeowner review

Reviewed by Madhu on 17/11/2025

A Building , kitchen and bathroom company with all aspects of joinery, plumbing, electricals, gas fitting and tiling, extension works and full re furbishments. With over 25 years experience we can accomodate all aspects of your fit/project, and we offer to talk to previous customers and can see photos of previous works to make your job look the best and to satisfy your project needs

Latest homeowner review

Reviewed by Thomas on 13/11/2025

Go for Dale if you are considering hiring a very good tradesman. His work is stellar.

Celtic Heritage is an established company with over 30 years experience in the construction and double glazing industry. We benefit from a level of knowledge which enables us to give in depth, and valuable advice to our clients.

Latest homeowner review

Reviewed by Lee on 5/12/2017

Great company and a good team of Lads.

Latest homeowner review

Reviewed by keith on 29/6/2013

e.mail quote, very helpful in explaining material costings.

Rated People

External Wall Insulation in Gwynedd

Loft conversion specialist, with 25 years worth of experience.

Hi , I'm a renderer and plasterer from Prestatyn, over 30 years experience in all aspects of plastering and rendering. Fully insured with public liability. Friendly and reliable small team. Kind regards Steve Clwyd plastering services.

Freddy Tierney

External Wall Insulation in Gwynedd

We our local firm been trading over 30 years. Customer always comes first free estimates no Job too small

King Builder

External Wall Insulation in Gwynedd

J.K.ModernBuild

External Wall Insulation in Gwynedd

Hi, my name is Jamie. my company is J.K.ModernBuild, I have many years of experience in the building trade and can offer advice on the job you need to be undertaken. we undertake many trades and furnish to a very high standard and professionalism -extensions -groundwork -landscaping -plastering & rendering -bathroom & kitchen fittings -soffits, fascias & guttering we take pride in our name and work, contact me and I would be happy to help and answer any questions you may have.

Civil Jobs L. Merseyside

External Wall Insulation in Gwynedd

"For over 2 years our professional domestic and /commercial painters and decorators have been providing top quality, fully insured and guaranteed painting and decorating services in Liverpool. Our highly skilled painting and decorating team can provide a range of services including industrial and commercial painting, domestic painting and decorating, house painting, wallpapering, paint stripping, plastering. All services are available on a large or small scale 'for commercial premises and private homes"

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    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

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External insulation and render of a Bungalow in Llanrwst.

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I want 50mm insulation boards to be installed to the entire front wall of my mid terrace house. I also want a flat, smooth render finish with silicone...

External Wall Insulation

I want 50mm insulation boards to be installed to the entire front wall of my mid terrace house. I also want a flat, smooth render finish with silicone...

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Having had new door and windows installed, I'm now ready to get external wall insulation put up on my mid terrace 2 storey house. I would like to...

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External wall insulation with rendered textured topcoat Site vist is a must by appointment only

How our service works

  1. Create a job - it's free

    We'll connect you with the right tradespeople, from over 30 different trades.

  2. Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.

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