Potable water reservoirs require an impermeable roof structure to prevent leakage and contamination leaking in through the roof and into the reservoir. A membrane can be installed over the existing concrete surface. Usually the underground reservoir roof will be landscaped in order that it blends into the surrounding environment. Our experienced technicians are able to provide waterproofing systems to suit specific site applications.
TPO and HDPE have been successfully used in the Water Industry for over 20 years serving new and old structures which have failed integrity testing.
TPO and HDPE can be produced in various thicknesses and can be manufactured or fabricated into large sheets for instant protection, which mitigates the problems caused by the vagaries of weather conditions.
The installation process benefits from modern welding techniques which are world renowned. The normal method is in the form of 'hot air' or 'hot wedge' sealing along with an extrusion process using Leister machinery. Each weld can be independently tested to ensure its integrity along with a complete test of the system prior to covering.
This system can be applied to most structures and connection points, including access areas, pipe services and up-stands, using a combination of brush applied liquids and termination belts.
TPO and HDPE can be laid directly onto the substrate or, where necessary, an underlay can be placed prior to the TPO and HDPE installation. Above the waterproofing liner either an overlay or drainage mat can be placed to complete the system.
WLS provide highly qualified technicians to assist and supervise project installations throughout UK and Europe