The House:
The Conversion:
Basement Size: 27 sq. m
Project Duration: 4 months and still ongoing
The property is situated close to the river Trent, and is possibly the wettest basement we have ever converted. The major tasks in this project were underpinning the foundations, drainage of excess water, and removal of the central supporting wall. In addition to this work, the client required us to re-lay and lower the timber floor joists of the ground floor, waterproof the existing living room and replace the stairs down to the cellar.
When we initially dug out the floor to provide the 2.5m ceiling height for the basement, the excavation filled to 700mm of water until the pump and drainage systems were installed. With such high volumes of water entering the basement, we installed a main pump, a secondary pump, and a battery back-up pump system to ensure the property was protected and to give adequate redundancy in the event of a pump failure.
System Installed:
A dual pump system
A battery back-up pump system
Sub-floor drainage
Floor waterproofing
Waterproof cavity membrane on the walls
