Case studies: Flooding Basements and Cellars in Domestic & Commercial Properties

Bosa Contracts have been selected as the preferred contractor to undertake the structural waterproofing and Tanking of domestic and commercial properties subject to flooding from drains and culverts owned by Yorkshire Water. 


Bosa have worked directly with Yorkshire Water and with their supply chain partners to undertake Sika Tanking including Sikadur Combiflex to the internal walls and floors of basements and cellars. Since 2001, twentysix basements and cellars have been successfully waterproofed against hydrostatic load providing Yorkshire Water with a cost effective long term solution. The BBA certified Sika Tanking system including Sikadur Combiflex and Sika 4a water stop is an ideal solution for this purpose. The system does not require sumps, pumps or yearly maintenance contracts. Being Sika Registered contractors Bosa are able to offer a Sika Warranty, an Insurance Backed Warranty along with their own 10 year guarantee to provide peace of mind to the client.