Damp, mould & leak services in Harrow
Harrow's housing spans Edwardian villas around Harrow on the Hill, dense 1930s semis and bay-fronted terraces across Wealdstone and Headstone, and post-war flat conversions near Rayners Lane. This mix of original clay plumbing, later loft and bathroom extensions, and ageing flat-roofed additions on semis creates plenty of joints, seals and pipe runs prone to hidden leaks over time.
Leak Detection
Trace hidden water leaks without unnecessary damage using thermal, acoustic and tracer-gas methods. Leak detection →
Structural Drying
Dry walls, floors and voids after a leak or flood with monitored dehumidifiers, to completion. Structural drying →
Mould Treatment
Treat and prevent the mould that follows water damage, dealing with the moisture source first. Mould treatment →
Damp, Mould and Water Damage Assessment
One visit that tells rising damp, penetrating damp and condensation apart and finds what is feeding any mould, so the right repair is done once. About the Assessment →
Areas of Harrow we cover
We attend leaks right across Harrow and its neighbourhoods, including:
- Harrow on the Hill
- Wealdstone
- North Harrow
- South Harrow
- West Harrow
- Harrow Weald
- Pinner
- Kenton
- Rayners Lane
- Stanmore
- Hatch End
- Headstone
Common leaks in Harrow homes
Extended semis with hidden pipework
Many Harrow semis in Kenton and South Harrow have had kitchen or bathroom extensions bolted onto the rear, rerouting supply and waste pipes under solid floors or within stud walls. Joints in these later additions often sit unseen for years, and a slow leak can soak subfloor insulation and joists long before staining appears on a ceiling below.
Flat-roofed extensions and dormer conversions
Loft conversions and flat-roofed rear extensions are common across Harrow Weald and Pinner, where felt or GRP coverings degrade quietly with age. Once the membrane perishes around flashing or upstands, rainwater tracks along roof timbers and down into bedroom ceilings, often travelling some distance from the actual breach before any damp patch becomes visible.
Converted flats and shared bathrooms above shops
Wealdstone and parts of Harrow town centre include flats above commercial units and older houses split into multiple units, meaning bathrooms often sit directly above another occupied space. A failed shower tray seal or cracked waste pipe joint can send water through the floor into the ceiling below, causing disputes over responsibility and damage that spreads before it is reported.
What our customers say
Very appreciative of the service and their follow-ups
Excellent service from Damp & Mould Solutions. Kerim was my main point of contact throughout and was professional, knowledgeable and extremely helpful from start to finish. Communication was clear, everything was explained properly, and the work was handled efficiently and to a high standard. It’s refreshing to deal with a company that does what it says it will do and keeps you informed along the way. I’d happily recommend Damp & Mould Solutions to anyone dealing with damp or mould issues. Particular thanks to Kerim for making the whole process straightforward.
Friendly, approachable and most importantly professional. Great service!!
spoke with Karim who was incredibly knowledgable and helpful. He provided me with very useful information and went out of his way to help me. He also answered all my questions thoroughly. They were very fast to respond via email and wotsapp
Clearly communication, easy to deal with and responsive. We would thoroughly recommend. The report was really detailed making our buying negotiations a lot stronger and leaving us with a clear plan of action with possible timeframes.
Was lovely working with the team and they did a fantastic and quick job to get all the mould out of my bathroom. Very much looking forward to working with them on other projects around my house!! Thank you for everything and shout out to Karim for being so sweet!
Top notch customer service from Kerim! He fully explained the process properly so we knew the ins and outs of the cost and the plan of action. The survey was done, they treated the mould and followed it up with a dehumidifier session and that's it no more mould, no more dampness and best of all no over complicated jargon and inflated prices. I left it a month before leaving this review to see if the mould would come back and I have had zero issues. I would highly recommend Damp & Mould Solutions UK.
Omg what brilliant service, excellent the cleaner did a very good job was efficient he took his time and cleaned everything, highly recommend S. Bessim…
Fast and efficient service
Highly recommend this company, very professional but kind service provided.
Very positive experience. From the first call every detail of the process was explained clearly which put me at ease. Kerim shared knowledge of what I should expect from the survey, and what to expect from the treatment so I could plan my day accordingly. I was provided a quote the same day which was the most competitive of all the quotes I received. Easy to book, friendly to talk with and completely took away all my stress. If you're dealing with mould and in a similar situation as I was, these guys are definitely worth the call.
Kerim and his team were amazing! Firstly, they surveyed my home and the report they provided was very detailed and found the cause to be a leak from the bathroom. As it was an active leak we were quoted the same day and had his team over the next day to fix the leak. Once the leak was fixed they returned the following week to install drying units and treat the mould. They returned 2 weeks later to collect their machines and provided us with a certificate of dryness which proved it was all dry and fixed. All in all the whole process was efficient and I couldn't fault their service in the slightest. Within a month our home is back to feeling clean and stress free. We are glad to have found someone we can trust and we will definitely keep your number saved and we will be recommending you to all of our friends and family.
Really impressed with the whole experience. The surveyor did a proper, thorough job and didn't rush anything, they got to the root cause of the damp and explained it all clearly. Detailed, professional and reassuring from start to finish. Couldn't recommend them more highly.
We used Damp & Mould Solutions to check whether damp in our living room and bedroom was being caused by structural issues with our leasehold block or simply poor insulation/ventilation. The service was very impressive, with our surveyor David explaining the issues and best solutions clearly to my partner and I. The final report produced was professional and reassuring, meaning we don’t have to take a case to the council. Overall, fantastic service and would certainly use again!
Great experience with this company from start to finish. They were professional, knowledgeable, and explained everything clearly without any pressure. The work was carried out efficiently and to a high standard, and we’ve already noticed a big improvement. It’s reassuring to deal with a team that genuinely cares about doing the job properly. Highly recommend to anyone dealing with damp or mould issues.
Very professional and organised I must say came out and completed the work very efficiently customer service was excellent. Definitely recommend this damp and mould service to anyone looking for a job done correctly. :)
I have been dealing with damp and mould for years but these guys were able to come in and resolve the problem quickly and professionally. Their prices were fair and reasonable and they got the job done clean. 10/10 would use again and would recommend.
Used Damp & Mould Solutions UK for a damp and mould issue at my property in South London. Really professional service, fast response and very knowledgeable. They use specialist equipment including thermal imaging which gave us a clear diagnosis. Would highly recommend to anyone dealing with damp, mould or a hidden leak.
Very helpful and professional, easy to communicate with about my mould issues and I received fast responses from the company on the best solutions for me. would recommend to all friends and family. 5/5
I recently used a damp and mould specialist company and was extremely impressed with the service from start to finish. From the initial survey, they were knowledgeable, thorough, and took the time to clearly explain the cause of the issue rather than just treating the symptoms.
Suspect a leak in Harrow?
Call 020 3051 8478 or send us the details and we will agree a date with you. If it is urgent, say so when you call.
Frequently asked questions
How much does leak detection in Harrow cost?
Will you damage my home finding the leak?
Do you fix the damage after finding the leak?
Do you provide reports for insurance claims?
More help in Harrow
Damp, Mould and Water Damage Assessment
Find the real cause of damp, mould or a leak at your Harrow property, with a written report and photographs. Assessment in Harrow →
Structural drying
Dry walls, floors and voids in Harrow after a leak or flood, monitored to completion. Structural drying in Harrow →
Mould removal
Treat black mould in your Harrow property and fix the moisture source behind it. Mould removal in Harrow →