This large private basement extension to an existing house in Rickmansworth, Hertfordshire will add a full-size bowling alley, a swimming pool/dance floor and a cinema room to the property, creating an extensive leisure facility below ground.

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Here, you can see the first stage of the concrete slab pour in progress. Moran UK are the contractors on site and the watertight concrete for the basement is being supplied by London Concrete, using BASF's MasterLife WP 799 water-resisting admixture. Approximately 320m3 of watertight concrete is being used in the structure, along with MasterSeal 910 and 912 hydroswelling waterbars and mastic system for construction joints.

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To find out more about the products used on this project, click here.