We give Homeowners a solution for dealing with Basement Waterproofing, Rising Damp and Timber Infestation

You are probably reading this for one of the following reasons

Existing Problem

You have a problem with your existing property such as damp, mould, or signs of rot are present in some of the structural timbers.

Buying a new property

You are looking to buy a new property and need peace of mind.

Looking to develop a property

You want to explore the options for developing a new or existing property. For example, you may want to convert a cellar underground.

We Offer

The problem that many people face is knowing where to start and which professional to talk to. Depending on your need, you have a range of options from architects, surveyors and builders.

The good news is that we can help, and even if you are unsure which specialist provider you are looking for please just contact us. We will quickly be able to establish if we can assist you and if we can’t we will gladly point you in the right direction of someone who can help.

If we can help you, the process is simple. Our business support team will take down your details and arrange for one of our highly trained and qualified Renlon surveyors to visit the property. We charge a fixed survey fee for this service, which is refundable should you go on to carry the work out with us. Once the survey is completed you will be given a full written report and quotation.

Our Specialist Services

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Basement Waterproofing

Are you looking to convert your existing cellar/basement into a new room or looking to maximise space? Going underground is a great use of space and already becoming increasingly popular as land and house prices continue to rise.

Creating and designing a liveable area underground is not always a straightforward process and involves thoroughly waterproofing the walls and floors to protect them from water entering the property. Even if you’ve always had a dry home, some things can change such as periods of heavy rain or flooding.

The good news is, Renlon can help. Our highly trained surveyors (CSRT/CSSW) can assess and design a waterproofing solution in accordance with British Standard (BS8102), and give expert knowledge along the way.

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Timber Infestation

When it comes to Timber treatments it’s important to know the type of rot or infestation you’re dealing with. Having a specialist survey will identify this for you and it could save you valuable time and money in the long run.

Traditional building methods combined with a damp temperate climate will increase the risk of insect and fungal attack within structural timber. Timber is one of the main materials used to construct a building so it is vital you look after it.

Renlon surveyors will inspect the timbers and if there is a problem, they will identify any hazards or risks associated with treating it. Treatments are always dictated by site conditions and the surveyor will always help and advise you.

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Rising Damp

Discovering damp in your home or a home you’re about to buy can be a worry, especially if you’re unsure exactly what it is and how to treat it.

Don’t worry, help is at hand. You just need to take things step by step. Firstly you need to identify what kind of damp you’re dealing with. An inaccurate survey could cost you more in the long run, so it’s always worth getting a specialist survey.

Renlon are specialists in Basement waterproofing, Timber treatments and Damp proofing. We will always give you honest and accurate information, helping you to identify what kind of damp problem you have, how much it will cost to fix and how long any work or treatment will take.

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Why Choose Renlon

Certified Surveyors

Our surveys and inspections are carried out by highly experienced and professional surveyors. All surveyors are fully Certified in Structural Waterproofing (CSSW) and Remedial Treatments (CSRT). The main industry body, The Property Care Association (PCA) awards these qualifications.

Service Quality and Experience

We have experience and longevity having provided building preservation and structural waterproofing solutions for over 35 years. We are members of the relevant trade and professional associations and all aspects of our work are carried out to the ISO 9001:2008 Standard of Quality. A copy of the company’s quality policy is available on request.

Insurance Backed Guarantees

As a long established and certified provider, we can offer long-term guarantees for our structural waterproofing systems, remedial damp solutions and timber treatments. We also offer the option of independent insurance backed guarantees.

Case Studies

14th August 2018

Residential Timber Treatment – Barnes

10th April 2018

Residential Waterproofing – Bethnal Green

25th October 2017

Residential Waterproofing – Pimlico



  • I'd like to let you know that your surveyor is a great ambassador for Renlon. He couldn't have been nicer and conducted a very thorough check of the flat. What's more, he was kind enough to wait for me to arrive home when public transport let me down, and he phoned my landlord to explain the cause of the problem upon my request. People are very quick to give negative feedback but I really feel that your surveyor deserves some positive recognition here - a great reflection on Renlon. Thanks again.
  • Renlon Ltd recently completed some damp proofing work as sub-contractor to JKS at my property in South East London. My wife and I just wanted to reach out to say thank you to the technician who was here for a few days doing the injections and rendering. He was a thoroughly lovely bloke, he showed real care for the property while he was here and did a great job, fast and high quality. He's a credit to Renlon, as was the project manager and surveyor when they visited the property at various stages to review and give advice. I just wanted to say thanks to all involved.
  • Renlon made our basement/cellar renovation plans a walk in the park. We found their technicians to be helpful, polite and timely. We are extremely happy with the high standard of work and workmanship that was put into our basement by Renlon and would recommend them to others.
  • Myself & my wife discovered damp in our living room & kitchen, after asking around for a damp proofing company we were recommended Renlon. First contact was very clear and reassuring, the surveyor was well presented, very knowledgeable and provided useful technical explanation of the nature of rising damp. The report & quotation was received within a day or 2 of the surveyors visit. The technicians were lovely chaps and very hard working. I would rate their service as excellent and would definitely recommend Renlon.
  • Thank you for such a fast and good report, really appreciated!
  • Highly recommend Renlon, both the surveyor and operatives provided a courteous and professional service & managed to complete our waterproofing works within the estimated time frame.
  • Renlon kept me updated every step of the way what they were gonna do, the technician was very polite and kept my house clean, very good experience and good reliable company. Would use again 😀
  • We are extremely pleased with every aspect of the work Renlon have done for us, from the Senior Surveyor's advice and solutions offered to the carrying out of the work to our cellar vaults and lightwells by the Renlon team. The Surveyor's expertise and professionalism was well received at all times and we very much appreciated the consideration and cleanliness the tradesmen showed for our home.
  • Happy with Surveyor's report and quotation. Renlon team arrived on time, got the job done. Very pleased.
  • Kevin arrived on time to my property to answer some concerns I had regarding the Renlon tanking I have in my flat. The tanking has been in place since the early 90's but I needed advice regarding pipework installation. I was given suggestions and advice which was extremely helpful in addition to other suggestions which he noticed while looking at the tanking. Kevin is a credit to Renlon and an ambassador to excellent customer experience. I would have no hesitation in recommending Renlon to others. Please pass on my thanks to Kevin.

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