Guide describing different types of gas shutoff valves to shutoff the flow of natural gas into a home to stop gas spills due to an accident or natural disaster.
Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.
Guide describing how to install a tankless hot water heater in a new or existing home to provide domestic hot water that is heated on demand without the standby losses associated with tank storage water heaters