Up To The Mid 80's Water Was Detected Using Spot Probe Sensors. These Units Would Consist Of Either An Etched PCB Or Two Metal Electrodes. Sensing For Water Was Done Using A DC Voltage In One Sensor Whilst Looking For A Return Signal In The Other. Providing No Return Signal Was Seen In The Return Sensor, No Water Was Present. The Problem Using This Type Of System Was Erosion Of The Sensors Due To Electrolyses And The Limited Area Of Water Detection, Water Could Flow Away From The Sensors And Not Be Detected Until Too Late.
Karl Kardel Co. Inc. in Oakland is a company that specializes in Roofing, Siding, And Insulation Materials. Our records show it was established in California.
More About Roofing:
Roofers are responsible for the maintenance of roofs.
Cover structure with materials such as aluminum or slate to improve efficiency.
Identify problems with the roof structure by assessing materials and conditions.
Assemble materials and equipment properly to provide safe access to roofs.