B Vent Insulation Shield

When you wrap it the heat signature of the vent changes as do surface temps.

B vent insulation shield.

Generally the metal insulation shield should be 2 inches above the top of the insulation. Not to be used for enclosed chimneys. Minimum clearance from combustible materials. Not to be used for enclosed chimneys passing through attic.

Sorry but you cannot wrap b vent or any listed venting with insulation. If you are using a b vent typically a double walled air insulated vent for gas appliances typically you ll see a fire clearance stamped right into the metal of the chimney stating 1 inch minimum clearance to combustibles as you ll see in this photo. Instead use firestop radiation shield and rafter radiation shield. It prevents insulation from seeping between the venting outer walls keeping a 1 in.

The airspace between the inner and the outer pipes provides insulation against heat loss to keep the warmer flue gases on the rise. Water heater and furnace vents. Only chimney liners may be wrapped and only the part inside the chimney. The attic insulation shield must be installed where the chimney enters the attic space.

Vents from heating devices such as the furnace or water heater get hot. The listing on b vent is based upon a 1 free air space around the vent. It s designed to be used when the venting goes through a ceiling. The amerivent system amerivent type b gas vent uses a double wall of metal pipe for insulation and safety.

Compatible with wood burning or multi fuel stoves this shield acts as a convenient pass through for attic space and prevents a pelletvent or multi fuel vent from making undesirable contact with insulation. This provides an air space between the insulation or combustible materials. Designed to keep insulation away from the chimney and to maintain the mandatory 2 inch clearance to combustibles. Must be used when the chimney penetrates an unoccupied attic.

Attic insulation shield for class b gas appliance venting system. Joe shows you how to make an attic insulation shield when space is an issue. Durable stainless steel construction resists corrosion for long lasting and reliable use. Distance from combustibles such as insulation.

The attic insulation shield must be installed where the chimney enters the attic space in any installation.