
Our Services
Universal Damp are trusted London damp specialists delivering guaranteed surveys, damp control, proofing, DPC injection, waterproofing, plus much more…
Damp Surveys
Comprehensive inspection identifying moisture sources, severity, and suitable remedies, using moisture meters, thermal imaging, and detailed written reports
Damp Control
Proactive strategies to diagnose, manage, and prevent damp, combining ventilation, drainage improvements, waterproofing, and routine monitoring
Damp Proofing
Integrated systems and coatings that stop moisture entering buildings, safeguarding walls, floors, and timbers against decay and heat loss
DPC Injection
A targeted chemical course installed within masonry to block capillary moisture rise, drying walls and protecting finishes long term
Rising Damp
Moisture drawn up from ground through porous walls; treated by DPC installation, replastering, and managing salts and ventilation
Penetrating Damp
Rainwater or leaks entering through defects like cracks, masonry, or failed pointing; resolved by repairs, sealing, and drainage improvements
Mould Treatment
Excess indoor humidity condensing on cold surfaces, fostering mould; controlled by ventilation upgrades, insulation, heating balance, and moisture extraction
Basement Waterproofing
Specialist waterproofing creating dry, habitable spaces below ground using membranes or slurry systems, drainage channels, and reliable sump pumps
Structural Waterproofing
Protective barriers integrated into building structure, shielding foundations, retaining walls, and slabs from groundwater ingress and long term deterioration
Waterproof Tanking
Continuous internal coating or membrane applied to walls and floors to resist water pressure, delivering fully dry, usable rooms
Air Brick Insulation
Solutions that reduce draughts and heat loss around air bricks while preserving subfloor ventilation, improving comfort and energy efficiency
Thermal Cork Coating
Thermal cork spray provides a vapour-open, water-repellent barrier, raising wall temperatures to reduce condensation, inhibit mould, and bridge micro-cracks
Over 20 Years of Expert Damp Solutions
Universal Damp leverages more than two decades of industry experience to provide accurate diagnostics and long-lasting solutions for all types of damp problems
Family-Run Service with Genuine Care
As a family-run business, we treat your property like our own, delivering high-quality, lasting workmanship that offers excellent value and personalised service
Risk-Free, Comprehensive Damp Surveys
We offer thorough damp surveys with a no-risk guarantee—if we can’t help, you won’t be charged. Plus, proceed with our recommendations, and we’ll refund your survey fee in full

Frequently Asked Questions
Quickly find answers about our services, process, guarantees, and accreditation…
What is a damp survey?
A damp survey is a thorough inspection of your property to identify and assess any dampness issues. Our experienced surveyors will visually inspect the property, use specialist equipment to measure moisture levels, and provide a detailed report with recommendations for treatment.
What is damp control?
Damp control encompasses a range of measures to prevent and treat damp problems. This can include improving ventilation, installing damp proof courses, repairing guttering, and applying specialist treatments to walls and floors.
What is DPC injection?
DPC injection is a treatment for rising damp. It involves injecting a damp-proofing cream into holes drilled in the mortar course, creating a barrier to prevent moisture rising from the ground.
What is mould and condensation?
Mould and condensation often occur together. Condensation forms when warm, moist air comes into contact with cold surfaces. This creates a damp environment where mould can thrive.
What is waterproof tanking?
Waterproof tanking is a method of waterproofing walls and floors, typically used in basements, cellars, and bathrooms. It involves applying a waterproof membrane to create a barrier against water ingress.
What is rising damp?
Rising damp occurs when groundwater rises up through walls or floors due to a lack of, or a faulty, damp proof course (DPC). Signs of rising damp include tide marks on walls, peeling plaster, and salt deposits.
What is structural waterproofing?
Structural waterproofing is a specialised area of damp proofing that deals with protecting the structural integrity of buildings from water damage. This can involve techniques such as basement tanking, cavity drain membranes, and structural repairs.

Our Reviews
Universal Damp has received over 400 glowing reviews. See what our happy customers have to say about our trusted service and their positive experiences…
Painted alley wall
Very happy with the work Would have them back again Will recommend them to family and friends
Rendering and painting
Gary kindly did me a quote for some work that needed doing and gave me a lot of advice and guidance too. He told me how to pitch a complaint to the builders of the house as well as who to contact at NHBC, MK Council and a surveyor. Hopefully the issue will be resolved by the builder, if not Gary will be our first point of call. Really lovely guy
Rendering of a gable end to our house
They promised a good finish and provided exactly that. They explained what they were doing, were polite, tidy and timely. We are very pleased with their work.
House painting
Very professional company. Work was too a great standard. Would highly recommend.
Left our farm house beautiful
Using Andura coating paint to leave a slightly texture to hide the Horrible K Render that a builder had mucked up was bit sceptical, the finish was amazing waterproof, weatherproof and keep cold out colour parchment is stunning . Wish had used this stuff before me and husband are delighted and relieved. They were so polite and tidy and got on with job keep looking at it ,it looks amazing . Don’t bother going any where else these guys are good . Very happy
Rising damp treatment
Could not recommend them enough. Gary and the team were brilliant start to finish. Honest, friendly and helpful. The job was quoted, booked and completed swiftly and easily. Everything was explained which was very comforting to us as first time home owners. Quality of the work is perfect, the plastering is blended brilliantly. Will definitely use them again. Thank you!
Damp course work
We had an extensive amount of walls and skirting board removed the render was stripped back holes drilled and injected then re-rendered and plastered hopefully no more damp as guaranteed for 20 years
External spray painting
Worked hard when here, got the job done quickly and neatly.
Repair and repaint render of all the house
Good communication prior to agree start date. Exhibited pride in workmanship. Very happy with completed job.
Re-rendering work
Universal painters did a great job of re-rendering the lower section of my warehouse wall. Communication was good, they came when they said they would and were very tidy.
Rendering the external areas to include insulation
The works carried out efficiently and cleanly. The workforce were courteous, friendly and prepared to put themselves out. In essence, good job and we are very pleased with the end result
External wall coating
Incredible workmanship with great attention to detail. Polite and approachable, very pleased with work that was carried out
Repair and painting rendering
Neat professional job. Excellent final finish. Pleasant and helpful work force. Job completed on time.
Bathroom fitting
Excellent work, would recommend to everyone
External cork insulation
I looked at K Rend and external insulation before I met Gary who does all types of insulation. We discussed the merits and pitfalls for each type and, in the end, I agreed that cork insulation would be best for my Victorian mid- terrace. Gary explained all the steps and the cork insulation process has not disappointed. It is worth obtaining colour samples from the manufacturer, corksoluk, as the colours aren’t quite the same as their brochure. One thing I was particularly pleased about was Gary’s flexibility in painting below my damp course blue to go with the sky cork. Thanks!
Amazing service – nothing too much
From the damp injection and render for one wall to the preparation of all walls, the ‘sky’ blue spray insulation and tidying up afterwards, Gary’s team was impeccable. I didn’t want a layer of black painted under my damp proof course so Gary used a complementary blue giving me a seaside feel which I love. It was worth asking for colour samples as the ‘sky’ blue isn’t as bright as the online brochure shows. Gary insulated my neighbour’s alleyway wall a different colour as that is my left hand (cold) wall. Thanks – I have recommended you to my friends already. Looking forward to a warm winter
Window uPVC spraying
Gary and the team did a great job on our windows. They arrived on time, were polite and treated our property with respect. Would recommend.
Spray render outside of detached house.
Repaired damaged render then sprayed render coat over the whole area. On time, courteous and hard working. Very pleased with the result.
Awkward job done really well
Had Corksol applied to the rendered areas of the outside of my house. Probably about 2/3 of it in total. Some areas are very tight and awkward to get to, but these guys used a combination of close range equipment and sheer determination to get the job done. I’m really happy with the result. The house looks stunning and feels quieter (that will be due to the insulating properties of the CorkSol). Looking forward to it being warmer in winter and cooler in the heat too. Fabulous job. Can highly recommend these guys and so far very pleased with the product
Great job!
Ben and the team did a professional job on the Corksol rendering and were great to work with. I was always kept up to date on when they would be onsite, the status of work and what the next steps were. They always made sure that they tidied up at the end of each day. I’m really pleased with the standard of work and the house looks great!
Excellent face-lift to our house
In the run up to the works the team were very patient and helpful in providing information about the product, and final finish to inform our decisions. The works were undertaken very efficiently and to a high standard. The team themselves were very friendly and made the experience a positive one. We would very recommend. The house looks great, and we have already many positive comments from family and neighbours.
Repainting exterior of house
We are really pleased with the end result. The team worked hard to get the job finished on time despite the very hot weather. Thank you!
Plastering
Great company would highly recommend from start to finish they were very easy to deal with and professional, the work that was carried out was done quickly and to a very high standard
External painting and insulation
Gary and Team worked efficiently to a high standard . Clear explanations and permissions sought before work started and during work when challenges arose . Communication is key to me and Gary was brilliant in this regard . Highly recommended.
External cork based insulation application
Very Efficient and friendly completion of work. Neat and tidy , considerate and respectful. We are pleased we chose them….
Thermal cork insulation (“SprayCork”) for the exterior walls of my house
My primary aim was to apply thermal cork insulation to the accessible exterior walls of my small detached property. Traditional ‘block’ insulation was not possible as a result of a narrow side passage. Not only do I now have SprayCork, I chose the bold “Denim” colour and my house looks strikingly different. Gary, Dean and Ben did an excellent job. They were very diligent, masking all of my (and neighbouring) windows, wall furniture etc. They were curteous to the many passers by who asked about the work. I am very happy with their work and would highly recommend Universal Painters
Repair rendering and painting with Corkshield..
Cheerful and efficient service completed without fuss in good time.
Exterior rendor 10
Very happy with the work carried out . Gary and his team were punctual , professional and extremely neat and tidy . They kept us fully informed on the progress of the work and the end result has been brilliant , given the house a new brilliant new look . Would highly recommend Gary and his team
Repair cracks to render and repaint back of house with resin coating
Helpful advice during visit for initial quote. Reliable, turned up as agreed and good standard of work.
Repair cracks to render and repaint back of house with resin coating 25
Helpful advice during visit for initial quote. Reliable, turned up as agreed and good standard of work.
Make good outside walls and re-render.Damp course wall base. Pointing bricks etc
Fantastic communication and work carried out exactly to plan
Applied rendering to our newly built extension to match the rest of the house
Gary from Universal Painters was very professional from start to finish. He was great at communicating with us regularly, as his work is very weather dependent, and did a great job in a very short amount of time. We would definitely recommend Gary.
Applying Spray cork insulation to outside of house
Arrived when stated and here everyday until job complete. Very professional. The house looks great. Particularly pleased with soffits and downpipes that were cleaned while scaffolding up. Would recommend
Apply insulated cork spray render in-between our mock Tudor boards of our bay window. 75
From start to finish Gary and his team were great to deal with, always prompt and knowledgeable. The work started on time as agreed and was completed efficiently. Would definitely recommend and use for future work.
Painting the outside of the whole house
Gary and his team were professional, friendly and up front with all information. When he came to quote for the job he explained the options and then sent a written, itemised quote. Ahead of the start date, he checked in with me to confirm go-ahead as planned. During, he was great to have around and kept me posted on progress. At the end of the job the team tidied up and they asked me for feedback. They also said they’d come back to make any tweaks should I spot anything (I haven’t). The final invoice was as predicted- no surprises – but minus scaffolding bill cos they’d managed without
Painting outside of house with thermal paint
A very good job done and the team started work exactly as promised and worked very efficiently so job completed ahead of schedule
Re render house exterior with resin based paint after having removed failed render.
Universal’s team removed failed render from exterior walls then patched allowing the property to be painted with resin based paint to give uniform look. Soffits painted. Brickwork waterproofed and fresh mortar applied to chimney stack. Good advice was given. Men arrived at 8.30 each day and worked hard. Very pleasant. Good at communicating if any issues arose.
Rendering, damp proof and exterior painting
Great communication from start to finish, from clarifying exactly what was required and providing recommendations where appropriate. Overall a great experience working with Universal Painters and I am extreemely happy with the end result.
Rendering front and back of Victorian terrace house in colour if our choice
I can’t speak more highly of Gary and his friendly team who have done a beautiful job of transforming our townhouse , spray rendering it in a beautiful blue colour that was specially made up for us. Gary was in good communication every step of the way , attends to every detail and goes above and beyond to satisfy his customers . Highly recommended. Dr P , Oxford
Cork insulation on the outside of my semidetached house
Gary, Ben and Charlie did an exceptional job applying cork insulation to my house. The level of communication from Gary was excellent. They were always punctual. They were super efficient and I trusted them completely. The team did everything they said they would and they finish of the house is amazing. The standard of work was exceptional and they were clean and tidy. I would highly recommend them and have discussed other project that I intend to use them for. This was a five star service.
Resin coated external walls
From start to finish an easy process. Gary was very knowledgeable and helpful, always returning our calls promptly. The whole team were polite and friendly. Good work ethic and we’re very pleased with the final finish. Neighbours have been complementary too. Would have no hesitation in recommending Gary and we would use them again.
Removing rendering along bottom of ext wall, fitting a bell drip and finishing off to match
Gary and his team have done a fantastic job, really neat and tidy and a great finish. They were happy to add a few small tasks to the job to ensure it was perfectly completed and they also gave me a lot of useful advice regarding damp/condensation/maintenance. They have been a total pleasure to have around, particularly speaking as a new homeowner living alone. I would highly recommend them to anyone.
Painting of house exterior
Really happy with the work Universal Painters have done for us. We had lots of cracks on our exterior walls with many uneven patches. Gary visited in advance of the job to explain what they would do and show us paint colours. He gave us good advice on which materials to use to get the best result. They started and completed the job when they said they would and worked quickly and methodically, tidying up as they went. They have done an excellent job of repairing the walls and painting the surface – the exterior walls look brand new. We would definitely recommend and use again. Thank you!
Painting exterior of house
Gary and the team where fantastic. Professional, clean, tidy and nothing was too much trouble. The attention to detail for the works carried out was exceptional. Even when a few extra bits were added they were very accommodating and even making suggestions that were excellent but added to their workload. I would recommend Universal Painters without hesitation. Excellent workmanship and very professional.
Rendering the exterior of the house – great job!
Thanks for the excellent, efficient service from Gary and his crew. They worked speedily, but without compromising the quality of the outcome at all. They’re friendly and yet very non-intrusive too and didn’t mind we were often out during the work. We’re very pleased with our cottonwood (pale) green rendering!
Drilling a damp course in the internal brickwork in one room.
This isn’t the first time Gary has completed work for us so we knew what to expect before he arrived. He’s always been extremely helpful and knowledgeable, quick to respond and, as we’ve had work done by him before, we know it works. Gary has been able to advise exactly what needs doing and has made it work within four budget. He also always provides advice for the trades completely the next stages – plastering, decorating etc. Highly recommend Gary for damp proofing services.
Exterior painting of house
We are happy with the overall painting and the sprayed resin paint finish is really good (and guaranteed for 20 years). Gary and the team were all very friendly and we were grateful they fitted us in as we know they are very busy. Given the need to render some cracks, and that we are told it won’t need repainting for many years we think the price was good. We have found that some paint has sprayed on other surfaces for example the garden gate and the finish wasn’t perfect but they worked efficiently and hard and amazingly job took less than two days. Whole house looks much brighter thank you
Damp treatment with exterior damp proofing/painting
Very reasonable quotation, Gary said what was needed to be done and nothing more or excessive. Work was done to a very good standard and fitted around their scheduled work in the area which was very convenient to be completed quickly. Great communication and punctuality. Would highly recommend the services of Universal Painters and will use again if required myself.
Repairing damage to the rear elevation rendered finish with poly render and spay on finish
We found them with a Google search and discovered that they were an enthusiastic family business. The boss Gary was very friendly and knowledgeable and provided us with a very competitive quotation in writing and within 24 hours of his on site survey. We found his team to be very hard working but they made time to explain the processes and keep us informed. The complete job looks great and comes with a 20 year warranty. No money was requested up front and we were happy to pay in full (via bank transfer) as soon as the job was completed. Top marks, they are a great little company.
Full house exterior painting.
Gary and boys did a first class job painting the house which has given it a damp course protection and an overall new lease of life. The quality of the work is brilliant. Thank you very much
Render repair and re-painting exterior
Great job done by Gary and team, house looks infinitely better and glad I went with their recommendation of white with black accents. Sprayed finish made quick work of the large areas and the overall finish is very consistent. Would recommend without hesitation.
Damp proofing
Gary gave very prompt responses to questions, always replied to calls/ emails and managed to fit us in within a few days, which was great. We had one wall sprayed with waterproof coating and a few meters of damp proof course injections, which was quite expensive, but if it solves our damp problems, then it will have definitely been well worth it. Recommended…
Paint the exterior of my house 10
Excellent service from Gary and his Team. Amazing results and a first class product. I would highly recommend them to anyone.
Exterior painting of house 25
Very happy with the finished painting and the improvement it gives to the house.
Exterior repairs and painting work
I am very happy with the work completed by Universal Painters. The quality of their workmanship was excellent, as was their timekeeping as they got the job done quickly and to time. They were very helpful, courteous and reliable. Ben in particular was an extremely hard worker and very polite.
Render repair work
Ben and his team did a great job, to a really great standard and very tidy. Ben gave a huge amount of time and advice along the way – I had lots of questions being new to this type of work and he was incredibly helpful throughout, talking me through exactly what they would be doing and why which I really appreciated. I would definitely recommend and use again!
Exterior house painted
Gary was fantastic, he was easy to contact, polite and extremely knowledgeable. The finished work is to an extremely high standard, and we are very happy.
Exterior House painting and Rendering
Gary and his team did an excellent job on my home! The work was carried out efficiently and to the highest of standards. Gary kept us informed on each part of the job being carried out. I was very pleased with the professionalism of Universal Painters. I will be recommending them to family and friends.
External house painting
Showed impeccable standards, professionalism, finish and workmanship from beginning to end. Really value the honesty, time and experience. Would thoroughly recommend Universal for anyone looking for a trusted tradesperson in the painting arena. Already agreed upon a 2nd project and only wish I found them sooner!
Expert Guidance
Our damp specialists provide clear, professional advice and accurate diagnosis, helping you understand the problem with confidence. You can rely on our expertise to protect your property and ensure lasting peace of mind.
Ongoing Support
We offer more than surveys by giving you reassurance and guidance at every stage. Our team is here to answer questions and provide support, building long-term trust while protecting your home.
Trusted Standards
As fully accredited professionals we follow strict industry standards. Every survey and treatment is delivered with integrity and expert care, giving you complete confidence your property is in safe, reliable hands.
Clear Reports
Our surveys include clear and detailed written reports that explain the cause of damp and outline tailored solutions. You gain the knowledge needed to take effective, confident action.
Precise Results
Using advanced diagnostic tools we identify the true cause of damp accurately. This eliminates costly guesswork and ensures every solution is targeted, effective, and designed to provide lasting protection for your property.
Smart Technology
With advanced tools like thermal imaging, moisture mapping, and drone inspections, we uncover hidden issues that others may miss. You receive a thorough assessment and complete confidence your home is fully protected.