CITY OF LOS ANGELES: DEPARTMENT OF BUILDING AND SAFETY 

CETCO has several waterproofing systems and waterstops listed with a general approval by the City of Los Angeles Department of Building and Safety under their Research Report # 24735. Waterproofing products included in the report are Volclay Ultraseal, Voltex, Volclay Panels, Swelltite, Envirosheet, and Waterstop-RX. We have been informed by the Dept. of Building & Safety that Aquadrain prefabricated drainage composite is not required to have the general approval and therefore is not listed within the Research Report. To view the current report link on the link below.