 Dictionary VALLEY to VOLTAGE Valley - The internal angle formed by the intersection of two sloping roof planes. Vapor Barrier - Plastic sheeting used to stop the passage of moisture. Vent - Any outlet for air that protrudes through the roof deck such as a pipe or stack. Any device installed on the roof, gable or suffer for the purpose of ventilating the underside of the roof deck. Vent sleeve -see collar. Voltage - Most electrical accessories in the home use 110 volts. Voltage is like horsepower, it is electricity's strength. Large appliances (such as stoves, electric clothes dryers, central air conditioners and hot tubs) use the larger 220 volts. | Welcome to BIS | About BIS | Home Inspections | Get Started | Technical FAQ | Contact us |
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