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

Martin & Sam Builders

External Wall Insulation

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We are Martin and Sam - with over 40 years of combined experience across building, plastering, and carpentry, we are proud to deliver top-quality craftsmanship for projects of all sizes. As fully qualified professionals, with an NVQ Level 3, we bring a high level of expertise and dedication to every job we undertake. From transforming a single room to renovating entire homes, or even designing and building a house from the ground up, we tailor our services to you. Whether you’re seeking modern updates, traditional finishes, we are here to turn your ideas into reality. We prioritise clear communication, attention to detail, and a commitment to excellence. Trust us to bring your project to life with skill, reliability, and passion - give us a call today.

Iosip Construction

External Wall Insulation

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Welcome to Iosip Construction, where craftsmanship meets dedication! Founded by Ioan, with over 16 years of construction experience in both England and Romania, we take pride in delivering exceptional quality and unmatched expertise in the construction industry. At Iosip Construction, we are committed to hard work, ensuring that every project is executed with precision and excellence. The services we offer include: - Extension construction - Loft conversion - Porch construction - All aspects of Rendering & Plastering - Tiling - Full House Refurbishment What sets Iosip Construction apart is not only our wealth of experience but also our unwavering commitment to customer satisfaction. We strive to make the construction process enjoyable for our clients by providing transparent communication, reliable timelines, and, most importantly, by ensuring that you are delighted with the final outcome. Our experienced team of five professionals is dedicated to delivering high-quality results in each of these services. From expanding living spaces to enhancing the aesthetic appeal of your home, Iosip Construction is your trusted partner in construction excellence.

Latest homeowner review

Reviewed by Dewang on 10/10/2017

Excellent tradesman with very good skills and very reasonable. The quality of the work is very good and people are also trustworthy.

U&U Construction LTD

External Wall Insulation

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We specialise in all aspects of construction work. We are completely dedicated to our work and put our experience into the job to make our customers satisfied. We aim to do our best and succeed 100%.

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Reviewed by Ralf on 9/4/2018

One to be careful with is the electrician Ben. The work seems alright, but his advise left us with excessive lighting in Kitchen and sitting room and our decision against TV sockets in ALL rooms was interpreted as NO TV and phone socket at all, which then later had to be added at extra cost and left the choice of suppliers limited. His crew also did the plumbing and the bathroom installation and the later was not done to the general standard of U&U constructions work.

DG CLEANERS UK LTD

External Wall Insulation

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DG cleaners UK LTD is a London-based professional cleaning company offering a wide range of cleaning services for homes, flats and offices throughout all London and suburbs. Our professional cleaners are well experienced in taking on end of tenancy deep cleaning, carpet cleaning, windows cleaning etc. We guarantee a high quality standard cleaning service for our valued customers. Don’t hesitate to get in touch with through our contact details.

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Reviewed by sabrina on 26/6/2026

Building Expert Ltd.

External Wall Insulation

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Are Company is about a fantastic company called Building Expert LTDthat is a very glistening Company . It is absolutely awesome !!! Some Chrome lights full of some glorious shine . We do some really shiny jobs in Hayes , Kingsbury , Queensbury , Feltham , etc.

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Reviewed by Merlin on 2/3/2022

The builders were quite friendly and patiently did the renovation of our home as per our requirements. It included full home renovation and creating a new downstairs washroom. He always followed up whenever we had any queries regarding the work and did a good job.

MAINLINE LTD

External Wall Insulation

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Family running construction company with 10 year of experience in the uk market.

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Reviewed by Julie on 6/9/2023

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

IMPRESS EUROPE LTD

External Wall Insulation

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Impress Europe Ltd is a full service construction company offering comprehensive solutions for residential, commercial and industrial projects. From design and planning to building and finishing, we handle everything - including new builds, extensions, loft conversions, renovations, landscaping and custom projects. Our team of skilled professionals are committed to delivering quality, safety and excellence in every job. We pride ourselves on reliability, clear communication and building long lasting relationships with our clients. Choose Impress Europe for all your construction needs - one company, every solution.

Spraytex Exteriors

External Wall Insulation

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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**

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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!

JTil.Plastering

External Wall Insulation

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All aspects of plastering - Plastering, Skimming, Rendering, Patching & Repair work, Plasterboarding and Drylining. Quick, clean & tidy. Professional & reliable. Fully qualified and liability insured. City & Guilds level 3 qualified and Skill Build winner. 15 years experience working in domestic and business premises. DBS checked.

Skender Sokoli

External Wall Insulation

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I’m Skender Sokoli who is an independent worker, when it comes to getting the job done right you can count on me. I’m highly skilled in plastering, painting, vending, and other sort of things. Whatever you need done you can count on me.

AHCM PROPERTY

External Wall Insulation

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I have 20 years Main Contracting experience covering all aspects of the construction industry; from design and planning to the full delivery of new build dwellings, extensions, refurbishments, period properties, conservation works, landscaping and utilities. Utilising this experience, I now work within the maintenance sector and on smaller projects offering a more personal service whilst still providing consultant/ construction management services for the larger schemes.

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Reviewed by Peter on 30/8/2025

Que Build London LTD

External Wall Insulation

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Quebuild London Ltd offers a full building service with every aspect of works covered no matter the scale or scope of works to both residential and commercial buildings.We also provide proactive and reactive maintenance packages with 24/7 one hour service for emergency call outs.We pride ourselves on using only highly skilled and courteous tradesmen with all trades in house so as a company we have full control of our projects. From your initial meeting with one of our knowledgeable estimators who provide fixed price detailed estimates to completion of works overseen by amazing management our clients needs are paramount,this ensures a streamlined service with quality controlled finishes beyond the industry standard. We have full public liability insurance with all risk assessments and method statements in place at all times no matter the size of works for peace of mind for us as a company but more importantly you as our client.

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Reviewed by Tom on 3/8/2024

John at Quebuild went above and beyond for us on this job. He completed all the work in a timely manner and for a very reasonable price. He was super knowledgeable and extremely attentive to detail, making sure to leave a high quality finish in terms of decoration - and he came back afterwards to address a few small things that needed doing. He was also a pleasure to have around - and I would highly recommend him for any other work. 10/10.

J MCMAHON LIMITED

External Wall Insulation

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Bedfordshire based carpentry and property improvements company . offering carpentry internal and external , as well as having a strong diverse team of different trades operating within the company , all aspects of building work taken on board and a professional job from start to finish .

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Reviewed by Christopher on 27/3/2026

Very unprofessional Postponed the agreed date and then ignored all messages Avoid!

ART PLASTERING

External Wall Insulation

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The services I provide are: internal wall plastering, sand& cement, hardwall and bonding As a Professional Plasterer, my job is to make sure I create a decorative, smooth and even- level on internal ceilings and walls

Aleksander Blana

External Wall Insulation

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Quality plays a big role into our work. We are always there, fast and reliable, ready to service you at any time.

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Reviewed by Sue on 10/5/2026

I got Alex to sort skirting boards that had damp and he did a great job, on time, friendly and happy with the price

Astrit Karanxha

External Wall Insulation

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Hi there All! We provide all type off building work undertaken with 22 years of experience,Plastering internal external rendering all type k rend,silicone rend, monocouche sand and cement, painting,tiling,Extension, loft conversion brickwork, driveways ,fencing,decking,etc

SAS RESOLVE LTD

External Wall Insulation

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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.

First Renderers LTD

External Wall Insulation

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First Renderers Ltd is a London-based, family-run rendering company with over 20 years of experience, delivering high-quality finishes across residential and commercial projects. Since our establishment in 2013, we have built a strong reputation for reliability, attention to detail, and consistently high standards of workmanship. We specialize in a wide range of rendering systems, including silicone render, Monocouche, traditional sand and cement, lime render, and external wall insulation (EWI) systems. We also work with leading manufacturers such as Permarock, K Rend, Weber, and other major systems, allowing us to offer tailored solutions to suit each property and budget. Our team is fully trained and experienced in applying modern and traditional rendering techniques, ensuring long-lasting, weather-resistant, and visually impressive results. Whether it’s a full property transformation or a smaller repair project, we approach every job with the same level of professionalism and care. At First Renderers, we pride ourselves on providing honest advice, competitive pricing, and a smooth, hassle-free service from start to finish. Our goal is to deliver results that not only protect your property but also enhance its appearance and value.

TA Building Firm

External Wall Insulation

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***Building the future.... ***Renovating the past...*** TA Building Firm. offers professional services plastering, rendering, and building work. We have years of experience in this line of business. In addition to plastering and new builds, we carry out a vast range of other services including, Our services are: * Single Extensions * Bricklaying & Blocks * Chimney Repairs * Plasterboarding & Plastering * External Rendering * Bathroom Instalments * Wall/Floor Tiling * Roofing & Facials * Block-paving & Landscaping * Kitchen Carpentry * Handyman jobs Our aim is to provide you with a reliable and friendly service.

Latest homeowner review

Reviewed by Michael on 7/10/2025

Taff did a fantastic job renovating 2 bedrooms, including taking back to brick, removing a chimney and skimming walls. Also arranged for electrician to fit lights. Taff is very friendly and personable and always felt comfortable having him nd his team in the house. Would recommend.