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The quick way to find a local Damp Proofing specialist in Gwynedd

There are 34 Damp Proofing specialists in Gwynedd, and last month we helped homeowners get quotes for their home improvement jobs.

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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

Welcome to Property Renovation and Decorating Services: " PROFESSIONAL SERVICE " We are professionals builders with over 17 years experience on all building works: extension loft conversion refurbishment bathrooms kitchens painting and decorating plastering, wood flooring, carpet fitting, tiling. building works undertaken: General Building, New Builds, full Interior & Exterior, renovations and much more. Emy has been providing professional home renovation services for over 17 years. He is praised by the customers for his attention to detail, responsiveness, timeliness and quality work. Call (text) for a free consultation and estimate:

Latest homeowner review

Reviewed by David on 19/11/2025

garydaviesbricklayer with 4 decades of experience, and apprenticeship served when they meant something, offering quality not quantity in the working week, damp solving from dpc injection cavity trays fitted to window and door heads , chimney trays , Lime mortar specialist,repointing and blown brick replacement the work carried out has to be good enough to be on my own property perfect and looking good for years to come .

Latest homeowner review

Reviewed by Mr on 30/4/2025

Top job. Good value. Very professional. In and out ! Highly recommend.

15 plus years experience in domestic and commercial Offering design and supply and installs in all electrical aspects. Making the everyday professional life just little easier. CCTV Networking and data Fire alarms systems Bathrooms and tv media walls are also a specialty.

Latest homeowner review

Reviewed by David on 3/12/2025

Arrived within an hour, polite and courteous manner, good job done quickly

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.

Hi at jays property maintenance we run a family run business that are specialists in flat roofing new roofs Chimley rebuilds lead work and all aspects of property maintenance.with a 5 million public liability insurance.

Latest homeowner review

Reviewed by Mark on 18/8/2025

AA property and groundwork All aspects building work landscaping Building Roofing Pointing Flagging Sand blasting Small demolition Extensions Ponds Driveway specialist Resin driveways Handy man Garden clearances Jet washing Block paving Flagging Groundwork’s All work under taken

Latest homeowner review

Reviewed by Des on 7/10/2025

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

From a single tile to a new roof we cater to all with a range of colours and options to suit all budgets. We supply and fit new upvc dry verges and dry ridge to eliminate the ongoing cost of yearly maintenance we also supply and fit maintenance free gutter systems with integrated hedge hog systems in place to ensure gutters need no maintenance we also supply and fit new upvc facial soffits and barge board new walls built and repointing available also we do weather pointing new joists flat roofs we supply and fit Epdm Firestone rubber flat roofs to eliminate the ongoing costs associated with older materials. ig. Felt roofs that will degrade as time passes we also supply and fit upon request eco friendly roof systems for those who prefer a greener planet friendly option thanks for reading any questions pls feel free to contact us

Latest homeowner review

Reviewed by Shiraz on 6/12/2025

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 Robert on 6/11/2025

Nigel visited us to assess the work and quote for the job. He turned up on time and was pleasant to deal with and answered all our questions. He also contacted us prior the starting the job to arrange a date and time. Unlike other tradespeople he turned on time on each of the 3 days it took to complete the work. The work was of a high standard and we were kept informed of progress as the work progressed. I have already began a discussion with Nigel regarding another project.

Pm building & landscapers ,with 35 years building experience we cover all aspects of building works to be carried out ,extensions ,conversions ,garages ,porches brickwork .stonework ,retainers and much more ,ins work carried out .

Latest homeowner review

Reviewed by Polly on 30/4/2025

Welcome to home build thank you for visiting my rated people page . We are a family run business specialising in all roofing work including: Re-roofs Flat roofs Slate Tiling Roof moss removed Chimneys Ridge & Hip tiles Lead work and Valleys Upvc fascia, soffits and guttering - cleaned, repaired and renewed. EPDM Rubber roofs. We give free estimates and all work is guaranteed so don’t hesitate and give us a call

Latest homeowner review

Reviewed by Naz on 19/12/2025

Fantastic service. Arranged a time and attended promptly. Completed the work within agreed timeframe. Would recommend and definitely use again

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 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

Rafferty Roofing Ltd are a fully insured profesional roofing company that covers all aspects of roofing

Latest homeowner review

Reviewed by Chris on 8/4/2022

Friendly and helpful. They fixed my roof without fuss.

We are a landscape and home improvement company and cover north, west wales and the Midlands. We specialise in all hard and soft landscaping. We aim to carry out professional work with nptc qualifications for any arb work and over 20 years home improvement experience in the team.

Latest homeowner review

Reviewed by James on 3/5/2022

Excellent service. Shaun was very communicative, and made sure the job was done well. Definitely recommend.

Hi I’m Paul I set up KAL Building Solutions Ltd after successfully working as site manager working on refurbishments for some of the biggest names including Brewdog, Revolution Bars and Ask Italian to name a few where timescales were tight but always kept to budget and time. Prior to this I worked on the domestic sector ranging from refurbishments to structural works. We have invested a lot in quality tools which makes our job easier and helps to do the job more effectively.

Latest homeowner review

Reviewed by Jen on 25/9/2025

Paul did a great job and kept us informed throughout. Very happy with the level of work done. Would highly recommend.

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 Margaret on 31/10/2025

Iwan was brilliant and is coming back next week to do further work. He was punctual, professional, cheerful and friendly. I would definitely recommend him.

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

GMS

Damp Proofing in Gwynedd

Gareth, the proprietor of GMS is a qualified wood machinist by trade and has over 25 years’ experience working within the construction industry. Gareth first started the business in 2005 with a view to provide clients across North Wales and Cheshire with kitchens. In the last 10 years the business has diversified and now accommodates a scheme of works within construction from kitchens to bathrooms, gardens to bedrooms, fire and flood damaged properties and more. Gareth employs several staff and subcontracts to NICEIC registered Electricians and GAS SAFE registered gas engineers. Therefore, GMS can offer project managing and the client only needs to converse with one trade [GMS] rather than multiple. Thus, taking the stress out of the job.

Latest homeowner review

Reviewed by Mark on 23/2/2018

Great communication and work carried out to a high standard.

Local Renewable Energy, Plumbing, Heating, Joinery, plastering, electrical and general Building Professionals. Trustmark Accredited, PAS 2030 Accredited, Green Deal Approved Installer and Gas Safe Installers. ECO 247 serve our growing clientèle of environmentally and economically aware customers. We provide plumbing, heating and renewable energy services, (including emergency call-outs when possible), throughout Prestatyn and in neighbouring areas in North Wales and the North West. We also specialise in general building work such as, but not limited to, Kitchens, Bathrooms, Extensions and full renovations of domestic and commercial properties. Our team includes heating and plumbing, joinery, bricklaying, plastering and electrical professionals with extensive knowledge and experience of mechanical and electrical engineering, renewable energy and technical consulting services. This combined skill-set allows us to develop systems that cater for the needs of traditional, modern, and state-of-the-art environments.

Latest homeowner review

Reviewed by Sheila on 13/9/2022

They were excellent and very reasonable

Oak Stone Property Solutions is a family-ran and operated business with many years of experience providing professional and reliable services covering all of your property needs, we offer complete solutions to maintain, improve, and enhance your property. With a proud reputation built on trust, quality, and attention to detail, we take great care in delivering high standards of workmanship on every project. Our mission is to provide exceptional service and lasting results at an affordable price, ensuring every client’s satisfaction. At Oak Stone Property Solutions, we treat every job as if it were our own home — because to us, quality and care always come first.

Latest homeowner review

Reviewed by Michael on 10/11/2023

Still waiting for invoice and guarantee since September

if you are looking for a new or one roof tile replacing then you have certainly come to the right place we seek to deliver excellence Time After Time and with the experience we have from working in a competitive industry, you can be sure that the finished article will be one to admire whether you need a complete new roof or your leaking guttering repaired, , don't hesitate to get in contact with BPM,Bill's property maintenance for a free quotation

Latest homeowner review

Reviewed by David on 21/10/2024

Protect your most valuable asset and the contents inside; hire Gopro Roofing to provide you with first class roofing services for very affordable and competitive prices. At Gopro roofing we specialise in providing high quality roofing installations for residential, commercial and industrial clients throughout London and the Home Counties. Drawing on over 30 years of industry experience, we offer the complete roofing service, providing everything from flat roofing and single ply systems to green roofs, waterproofing systems and chimney refurbishment. We specialise in all aspects of roofing services, including: * Single ply systems * Pluvitec * Lead work * Topseal systems * Europolymers * Waterproofing * Velux windows * Flat roofs * Guttering * Cladding, fascias and soffits * Rooflights * Insulation * Carpentry * Pointing * Maintenance. * New roofs * Emergency repairs We have a reliable, honest and highly skilled team of roofers, which enables us to offer you one of the most professional and cost effective services, not only in London but throughout the South East. We offer the complete roofing service; from major re-roofing projects to minor domestic roof repairs that are not only competitively priced but also providing you with peace of mind.

Latest homeowner review

Reviewed by Marilyn on 20/4/2025

Hi I’m from Homebuild we are ready to take on the job that you advertised we are very reliable and we have 20 years experience in all types of home improvements if you need to ask any questions we are here to Answer any questions that you’ve got thank you

Latest homeowner review

Reviewed by Peter on 1/11/2023

AVOID AT ALL COSTS.

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.

Weatherproof roofing & property contractors are a self employed team With plenty of experience behind our main roofers we are confident in locating and resolving any issues you may have. we provide free estimates via email and also in person. we are a fully registered firm that can provide our company number, public liability insurance and all the correct info needed on arrival. We are fairly new to rated people but take great pride in the fact we work mostly of customer recommendation and hope to continue doing so. Here is a list of some of the work we carry out. • new roof installations of all profiles. • chimney repairs. • roof repairs. •Upvc • lead flashing • dry verge • repointing & rebedding ridge-tiles. • render. • external painting. • gutter cleans. and much more we provide valid guarantees with all of our work. And take payments into our business bank account also providing a receipt once payment has been confirmed. thanks for reading and hope we can be off service to you kind regards Martin weatherproof.

Latest homeowner review

Reviewed by Sheila on 16/12/2023

Told work was guaranteed, Further problems after job finished, tried to contact but ignored my text and emails. No receipts even after repeated requests. Previous comments rescinded.

Would you all kinds of roof repairs gutter repairs cleaning gutters alter alter building over cause fully guaranteed

Latest homeowner review

Reviewed by Baiba on 27/8/2024

Loft conversion specialist, with 25 years worth of experience.

If you are looking for a blockpaving specialist and roofing specialist alpha property services can help. We have been transforming driveways for 12 years, laying tarmac and installing blockpaving, fences and crazy paving for happy customers Alpha property services provide ideas and designs to improve, remodel or simply refresh the exterior of your home. Whether you are looking for a driveway, patio, pathway or a new roofs we would be more than happy to help. At alpha property services we take great care in our work and pride ourselves on attention to detail, in order to maximize the impact of all aspects of our work. All work includes a 10-year guarantee on completion. All too often a property’s exterior is overlooked but the fact is your driveway is the first thing you see when you return home and the first thing others will notice too. A well-tended, beautifully laid driveway can add to the tranquillity you feel at the end of the day so it is important that you get it just right. We pride ourselves on the high standards we achieve for each customer, working closely with our customers to understand their needs and provide them with hard wearing, attractive exteriors, guaranteed to add kerb appeal. For alpha property services , there is no job too big or too small. We are a family-run business and understand the importance of preparation and use high quality materials to provide an excellent finish. Our 12 years in the roofing and driveways industry means that we operate efficiently, offering a high-quality finish to every job we do. We specialise in blockpaving and driveways and our services include: * Block paving * Driveways * Patios * Paths * Tarmacing * Roof repairs * New roofs * Crazy Paving * Fencing * steam cleaning * All Aspects of Garden Maintenance * Patios * Gutters * Flat roofs Why Choose Us • Prompt & Professional Service?• Friendly & Reliable?• We Personalise Your Project?• Locally Based Company?• Great After Sales Customer Care?• Work Fully Guaranteed For 10 years?• Written Estimates Provided Prior To Work?• Work References Provided?• 14 day Cooling Off Period?• Free & Impartial Advice We know that every customer has unique requirements so please feel free to get in touch with us. Our friendly team will be happy to provide you with free, no-obligation information and advice and a quote should you require one. If you would like to find out more about alpha property services and the broad range of services that we offer,

Curve Management Services Ltd offers a service designed specifically to its customers requirements. Our services include leak detection, leak repairs, damp investigations, building envelope surveys and property drying. Our experienced technicians undertake all work. Our comprehensive building knowledge and unmatched experience in our field of expertise allows us to complete any job from start to finish. Our team of skilled technicians undertake work under the guidance of our experienced project managers. We can undertake private and insurance work via our in-house insurance claim specialist.

Nl roofing is a well established business with a great customer satisfaction rate with our aim of doing a great job and meeting our customers needs we undertake all aspects of roofing and upvc line and gutter repairs and new roofs we are also certified flat roof installers no job to big or small from minor roof repairs to complete new roofs we've got you covered

All aspects of groundwork’s Pathways Driveways Fencing Paving Drainage Scrapes Decorative stone Dig out internal floors Damp Inquire for more info

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Recently completed jobs

Here's what's been happening in and around your area

rising damp in front room...

rising damp in front room walls and floor feel damp

Rising damp on internal walls

Would like someone to come out and have a look and provide a free estimate for corrective works

flaky walls under window sills...

flaky walls under window sills

the cottage is detached 4 bed...

the cottage is detached 4 bed , its over 200 years old , a lot of the walls are slate and some are several foot thick , others are block . its a...

old slate cottage - damp...

old slate cottage 200+ years old needs red amp proofing I think ! it's in morfa Bychan just outside Porthmadog

We are having damp issues in...

We are having damp issues in one corner of out house. I suspect it may be a lack of/ insufficient damp course. I need advice on what is causing the...

Damp Proofing

Inspection and quote required

Damp course, replaster,...

Newly plastered walls, now ruined with damp about a metre high. Need dry course, replaster and new skirting boards. New flooring must be protected.

Back of 1930’s bungalow

Outside needs digging back Then walls damp proof course

Living room wall needs...

Wall needs damp treatment dampness on the bottom of the wall

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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