Basement Waterproofing – Henley on Thames




Park Place estate is situated in Henley on Thames, Oxfordshire. The estate is hundreds of years old and was previously owned by developer Michael Spink, who spent four years modernising and upgrading the grade 2 listed mansion and grounds at a cost of millions. There are a number of other smaller properties on the estate, including 3 smaller houses and 10 cottages. Michael Spink retained 300 acres to develop a number of executive homes.

Why Renlon were called in

Renlon was called in by Spink Construction to future proof the Henley property against any damp related problems that may arise over time. As the basement is below ground our surveyor knew that it could be affected by ground water penetration in the future and consequently the waterproofing design had to be appropriate and the treatments specified had to protect the basement against the potential risk of water penetration.

Henley on Thames Project

The project involved waterproofing of the main basement and sub-basement with installation of over 2000m² cavity drain membrane to the underground car park, lift shaft, stairwells, light wells, plant room, swimming pool, spa and gym.


Renlon installed a waterproof solution in accordance with the current British Standard – BS8102:2009. Cavity drain membrane was installed on the walls which channels water or vapour and the floor was accompanied by a perimeter drainage channel which ran around the edge of the basement. This then leads to a dual sump pump chamber which collects any incoming water. A complete soffit detail was installed to divert water from above and to the sub-basement a further soffit detail was installed accompanied by a cavity drain membrane installation to the floor.

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