Definitions for "ROOF VENT"
A weather-tight penetration through the roof allowing for ventilation into the insulated area of the outside air.
A pipe that allows air into a drain system to balance the air pressure, preventing water in the traps from being siphoned off.
a nice feature that allows air circulation at night, while preventing condensation from occurring inside the tent
Keywords:  retarder, exerted, outlet, deck, vapor
A vertical outlet in a built-up roofing system to relieve the pressure exerted by water vapor between the roofing membrane and the vapor retarder or deck.