The cellar had been constructed and waterproofed 2-3 years before MACLENNAN-LSE WATERPROOFING were called in by the building contractor because there were problems with water ingress.

MACLENNAN-LSE WATERPROOFING specified the  membrane system with an upgraded sump and pump with battery back up and alarms .
Peripheral drainage was installed which drained to the new sump with double pumps.

The floor was covered with a sealed MS20 system and the bottom half of the walls were covered with a  PT Membrane.
The work was carried out in approximately two weeks and guaranteed for a period of ten years by LSE Building Preservation.