A new house at Napoleon St at Sans Souci is situated some 15 metres from the water’s edge of the Georges River.

The extensive residence was designed by architect Tony Antoniou with views over Botany Bay and the Captain Cook Bridge.

In addition to an entertaining terrace on the top floor and large dining areas the house has an elaborate home theatre.

The home theatre is situated at a level 1.5 metres below the high water mark.

The architect specified the Wolfin System to waterproof the area under the house set aside for the theatre – having seen the Wolfin system used around the corner in Ida St where it was also used to waterproof the home cinema- again 1.5 metres below high-water level.

The water level around the excavated hole was temporarily lowered by means of hydraulic spears attached to a pump running 24/7.

A layer of Shotcrete was then applied to the permanent steel shutters and the Wolfin system was then laid to the walls of the shotcrete and across the base.

The floor was poured, the inner formwork erected and the concrete and were walls poured.

After the concrete had set and the inner formwork stripped the cellar was completely flooded so that the spears and pump could be removed, without water pressure lifting the cellar out of the ground.

After the main structure was completed the cellar was pumped dry.

Despite the membrane being under almost constant pressure from the water the membrane is now keeping the theatre area dry.

The Wolfin System is impervious to the salt water and because of its welded system and cast-in reglets and the on-site supervision of Wolfin Waterproofing Systems guarantees a watertight solution.