Renlon are part of the Renlon Group and are leading specialists in Basement Waterproofing, Damp & Timber solutions for over 40 years, providing full survey and contractor services for London and the Home Counties.We provide waterproofing solutions for below ground structures and elevated decks or podiums, a range of render and membrane systems together with damp proof courses and treatments for wood boring insects and for the prevention of dry and wet rot decay to timbers.Whether you are an architect, surveyor, building contractor or a householder we offer a complete survey, design and guaranteed installation service to meet your needs. We are members of the Property Care Association and hold accreditation with Construction Line Gold, Safecontractor, Basement Waterproofing Association, Builders'​ Conference, THSP, BSWA, BSI and Trustmark. All of our design and remedial solutions carry a long-term guarantee, third party insurance backed guarantees are also available.

Basement Waterproofing Damp Proofing Woodworm Treatments Dry Rot Eradication Wet Rot Eradication Fungal Decay Treatments Structural Repairs Injection Waterproofing New Build Waterproofing Membrane Installation Structural Waterproofing Basement Conversion Timber Treatments System Design & Installation Swimming Pools New Builds Professional Advice Fully Qualified Surveyors (CSRT CSSW) BS 8102 System Design & Installation Remedial Services Lift Pits Gas Membranes External Waterproofing Cellars Spas Deck Waterproofing Damp Coursing Tanking Basement Tanking System Design & Installation