London And Cotswold's
Structural Waterproofing

Enquire Today On: 0800 4480594

We specialise in type C cavity drain waterproofing. Our surveyors can design your bespoke basement waterproofing system and our trained staff can install the membranes, cavity drains and pumps to ensure that your basement is kept dry at all times. Our guarantees will also give you peace of mind.


Non habitable areas such as cellars and vaults may still need to be kept dry for storage such as residential wine cellars, commercial pub cellars, bike stores etc. We have vast experience in designing and installing tanking systems using some of the best products available. We always issue a warranty certificate on completion of our works.


We specialise in offering waterproof solutions to large industrial and commercial flat roofs as well as smaller residential flat roofs. We are registered installers of Desmopol liquid rubber roofing products so all our completed work comes with warranties and guarantees.

London & Cotswold’s Structural Waterproofing specialise in three main areas:

– Home Basement Waterproofing 

– Cellar & Vault Tanking

– Flat Roof Waterproofing

By combining our knowledge of building structures with good quality waterproofing products we can offer a complete structural waterproofing service to any walls, floors, ceilings and roofs. We offer fully insured and backed by our product guarantees.

Why should you choose LCSW ?

– Family run business with 20  years industry experience

– Qualified,  experienced surveyors to design a solution tailor made to your job

– Fully trained, competent and friendly installers

– Free site survey to investigate damp/wet/leaking areas

– Free consultation and quotation

– Registered installers of high quality waterproofing products

– Comprehensive warranties and 20 year guarantees


Get In Touch With Us Today !

We Offer A Practical Solution
To All Your Structural Waterproofing.

Areas We Cover:

Camden, Royal Borough of Greenwich, Hackney, Hammersmith and Fulham, Islington, Royal Borough of Kensington and Chelsea, Lambeth, Lewisham, Southwark, Tower Hamlets, Wandsworth, City of Westminster, Barking and Dagenham, Barnet, Bexley, Brent, Bromley, Croydon, Ealing, Enfield, Haringey, Harrow, Havering, Hillingdon, Hounslow, Royal Borough of Kingston upon Thames, Merton, Newham, Redbridge, Richmond upon Thames, Sutton, Waltham Forest, Cotswolds, Cheltenham.


James and his team designed and installed a cavity drain waterproofing system for our clients basement in south west London. His expertise in this field is what made us appoint LCSW. The basement is completely watertight and it was a pleasure to work with such an efficient team"
"LCSW installed a liquid rubber waterproof coating to the entire area of two of our aeroplane hanger roofs which both had major water ingress. Since the installation we’ve had no leaks and are very happy with the service provided."
"James has been very helpful in solving a basement drainage problem which had developed over a period of time. This work involved the installation of 9 jetting ports to our basement waterproofing system. The result of this work has led to the satisfactory solution of our problem. James’ work was done in collaboration with their basement pump servicing firm, who were then able to properly flush out the drainage channels which are crucial to the normal function of our Newton Waterproofing System."
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