The quick way to find a local Cavity Wall Insulation specialist in Central London

Post your job for free. Get quotes. Read reviews.

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.

Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!

Mary

George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!

Dmitry

Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.

Holly

Browse Cavity Wall Insulation specialists

Take a look at our Cavity Wall Insulation specialists profiles, read reviews and request quotes directly.

Optimal Finishes is a team of experienced, multi-skilled tradesmen delivering reliable, high-standard work across residential and commercial projects. With over 25 years in the industry, we have built a strong reputation for quality, consistency, and professionalism. We manage a range of in-house trades, including plumbing, electrical, plastering, and painting. This allows us to coordinate full bathroom refurbishments, interior and exterior home renovations, as well as landscaping, patios, and tiling projects. Clients benefit from a streamlined service, handled by one team from start to finish. Our work is clean, well-organised, and carried out with attention to detail. We respect our clients’ homes and businesses, and we aim to complete every job on time, on budget, and to a high standard. We focus on clear communication and fair pricing. Quotes are detailed and transparent. Most of our work comes through referrals and returning clients, which reflects the care and consistency we bring to every project. Our services: -Painting Interior and Exterior Painting Mould and Damp Control -Flooring Installation Laminate, Vinyl, Hardwood, and Engineered Flooring Removal and Installation. Underfloor Heating Herringbone -Tiling Wall and Floor Tiling Splashbacks Tile removal and replacement Bathroom installation Exterior tiling Wet room installation Underfloor heating Swimming pool tiling -Carpentry Bespoke Furniture and Fixtures Doors and Windows Staircases Kitchens -Plastering Decorative Cornicing / Plasterwork Dry Lining & Plasterboard - Installation and Repair Internal & External Rendering Plaster Skimming Polished / Other Plaster Finish Screeding/ Standard Coving -Roofing Chimney repair Clean gutters Roof cleaning Flat roofing Gutter installation and repair Pointing Roof inspection, Installation and repair Solar panel installation Why Choose Us: Our team is passionate about delivering great results. With a 9.8/10 rating from local customers, we take pride in our reliability and quality. We know every project is unique, so we work closely with you to make your vision come to life. Using top-notch materials, we ensure a beautiful, long-lasting finish. Plus, we value your time and strive to complete every project on schedule, making the whole experience as smooth and enjoyable as possible! Ready to transform your space? Contact us for a free quote within 24 hours. Let's discuss your project, and we'll provide you with a detailed estimate.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Lamia on 8/1/2025

Great team, great work, brilliant service. I asked got my daughters room to get split with a partition wall and they done an amazing job. They was thorough, fast, great work. Really polite, great communication and would definitely use for future work

Dear Customer, We are a construction company with over 25 years experience. We undertake all aspects of building work, including new builds, extensions, lofts, total renovations, new bathroom and kitchens. All work guaranteed and certified for, GasSafe and NiCEiC approved on completion.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by John on 28/1/2026

We got Kingston Surrey Construction in to undertake a full ensuite refurbishment after too many leaks and drips over the years. They provided a competitive quote and were available to undertake the work quickly to suit our needs. They worked at a steady pace with a focus on doing it right rather than doing it quickly. Their communication was good and they were as tidy as you can be with such a job. Overall we are very pleased with the outcome of the work, many thanks.

WELCOME INPROJECT CONSTRUCTION - Building your future, one brick at a time. We have completed numerous projects, from small renovations to large commercial constructions. Our portfolio includes residential and commercial buildings, educational and healthcare facilities, and industrial constructions. Our mission at INPROJECT CONSTRUCTION Ltd is to provide our clients with exceptional construction services that exceed their expectations. We are committed to delivering high-quality workmanship, on-time completion, and cost-effective solutions. What sets us apart is not just our ability to construct buildings but our commitment to building relationships. We believe in honesty, integrity, and transparency in all our dealings with our clients. We value teamwork, professionalism, and continuous learning and improvement. We prioritize transparent communication, ensuring that our clients are informed and involved at every step.

This is Simicus Construction Ltd, we are a team of builders with over 20 years of experience in the Construction Industry.

Andy Handyman has been in existence for nearly ten years...I have been a carpenter joiner for about twenty years, focusing on mainly second fix and joinery. Wardrobes cabinets, bookshelves also flooring, wood and laminate City & Guilds Carpentry Joinery

Latest homeowner review
full starfull star
Reviewed by Kam on 24/1/2026

Polite professional and completed the job to satisfaction

LITA CONTRACTORS LTD We are a family owned construction company with over 10 years of successful commercial and residential building projects. Based in London, we help clients with all kinds of construction needs, with existing plans or brand-new designs and solutions. Some of our services include: - Ground work - Drainage - Basements - First Fix & Second Fix - Kitchen & Bathroom Fit Out - RC Frame & Steel Frame We are specialised in delivering reliable and best quality services that will last a generation.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Mohammed on 9/2/2026

Alliance building and landscapes Ltd are a family run business here at alliance we make sure all works is completed to customer satisfaction,no job to big or to small,contact us today for a free quote,book once,book right,book alliance

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Raymond on 28/2/2025

Thanks to Michael and the team for a great job rendering the chimney breast in the attic. Quoted and works completed in less than 48hrs. Not the cheapest of the quotes I received, but went with the positive reviews and wasn't disappointed.

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.

Latest homeowner review
full starfull starfull starfull starfull star
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.

24 YEARS EXPERIENCE ON Builder Contractor With my team we did from Garden Landscape all the way to new build yet making sure Clinet saves and reaches his goal on they projects. We are qualified Gas safety Electrical Plumbing Solar Heat pumps We specialaise on: Loft conversion Bathroom Kitchen Extensions Paiting and Decorating Plumbing Roofing Garden Landscaping Insured and insurance backed guaranteed services

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Anna on 2/2/2026

Remi was reasonably priced and I'm happy with the painting in my living room, he also took a quick look at my bathroom lighting at no extra cost

At O.B.Build we want to make your home look amazing inside or outside.We take pride in our work and can handle any job or task.We are clean tidy, polite and always deliver a quality finish.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Hannah on 3/4/2025

Brilliant refurb of 2 bedroom flat, timelines were tight but John delivered to great standards on time! Job included damp control, relaying floors, and painting/redecorating. Would highly recommend. Thank you John!

Hello my name is Marian, As a builder, I am driven by a passion for crafting spaces that inspire and endure. With a keen eye for detail and a commitment to quality craftsmanship. I have over 20 years of experience in building that is exterior and interior projects, however I also can do paint & decorating, floorings, skimming interior and exterior and many more. Thanks

We have over 30 years experience in landscaping and general home improvements, no job to big or small, we provide free quotations and site visits. Customer satisfaction comes first for us every time. All of our work comes guaranteed, we use high quality products, machinery and all work is done in house. We don’t sub contract any work out.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Sushant on 21/10/2025

started business as parternership in 2007, we grown our portfolio from 2 houses to 86 units today, we also helped over 100 homeowners and 25 landlords including housing association, we help from a full consultancy package to build yur dreams to even help with leasing to our corporate contacts if you wish to invest. featured on HOMES UNDER THE HAMMER, we pride our selves in job well done, we always make sure we start projects within 2 to 3 weeks from time we agree and we always deliver our projects on time; we make the impossible a luxury and affordable possible while we take all the stress away; BGH combines technical expertise with exceptional customer service, ensuring every client benefits from cutting-edge technologies tailored to their home needs. with industry leading certifications and proven track record, BGH is a top choice for those seeking efficient, reliable and successful renovations We ate fully accredited Offer full guarantees and insurances including insurance backed guarantee and deposit guarantee We are specialist in new build, extensions, heavy refurbs, hmo and luxury conversions

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by marvelous on 25/9/2025

We are one of the best building and renovation company in London since 2011. Our experience taken over many years and different architects helping us to provide a service meeting the highest quality standards in every detail, making our homes and city beautiful...

We are an electrical contractors with over 20 years of experience. NICEIC registration. Always delivering friendly and exceptional service. Public liability insurance for your peace of mind.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Tunji on 7/10/2024

Great price, prompt and professional.

Transforming spaces into stunning havens, Clean Lines Paving is your go-to partner for all things construction and landscaping in North East London, Enfield, and beyond. With a rich legacy spanning over 20 years, our craftsmanship speaks volumes, whether it's crafting bespoke patios, driveways, fencing, or foundations. But we're more than just surfaces; we're your trusted allies in home transformation. From seamless garage and kitchen conversions to elegant one-story extensions and inviting porches, we bring your vision to life with precision and flair. At Clean Lines Paving, we understand that every project is unique, just like every home. That's why we offer a diverse range of designs to perfectly complement your space, ensuring that every inch reflects your style and personality. When it comes to property maintenance and repairs, trust in our expertise to keep your investment in pristine condition for years to come.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Mohamed on 2/9/2024

Very pleasant, understanding and efficient. Quote as would be expected for the job. I’m very happy with this company.

Family business specialising in all aspect of building work full refurbishment and renovations. We bring over 20years of trade experience and pride ourselves on being professional and reliable. We deliver excellent service and high quality workmanship. renovation.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Rin on 23/6/2024

Rickie did an excellent job painting our small 2 bed house throughout. And finished the job earlier than expected which was a bonus. Would definitely recommend!

Just4U Builders We offer a wide range of home improvement and repair services, including: Painting Carpentry Flooring Plastering Plumbing Handyman Services Feel free to let me know if you'd like more details added or if you'd like me to assist with something else!

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Suhran on 11/1/2026

Leroy is very professional, courteous and honest. A pleasure to deal with, clean and good work. Highly recommend and will be my first point of call for future jobs.

Well established family run building company based in London,we have built a strong relationships with well known building societies across the London due to our quality and trustworthy service High quality levels of work in major building projects,we specialise in planning and design,project management and general building services

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by john on 9/11/2025

5 star

I’m hard working and friendly person that like to meeting new people and help them. Doing carpentery, made to measure furniture, loft conversions and extensions, staircases, fitt kitchens and bedrooms, wood flooring, assembling furniture and fitting it, also fitting doors and windows, change locks. Also can undertake any handyman and garden work. I’m finished building and carpentry colledge 21 years ago. Ever since enjoing to work in building trade.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Shenazzer on 4/9/2025

Post your job for free

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople's profiles