How to Insulate a Stove Top Vent

Install the vent hood and the ductwork inside of it according to the manufacturer’s instructions. Ideally, the ductwork will cut through the exterior wall behind the vent hood, so the air pulled from the kitchen only travels a short distance before exiting the home.

Apply high-temperature sealant between the ductwork and any portion of your home with which it comes into contact. If you cut through a wall stud in order to run the ductwork, fill the space between the ducting and the wood with the sealant.

Insert a duct cap or wall cap into the ductwork where it meets the exterior of your home. The duct cap keeps moisture and dust out of the vent. It also reduces the amount of cold air that flows back into your home through the opening in the wall. Apply a line of high-temperature sealant around the duct cap where it meets the wall of your home.