Chimney Flue Block Off Plate

You can follow these easy steps to block off your fireplace or even to close it up completely.

Chimney flue block off plate.

The damper sealing kit is designed to seal off your damper around your stainless steel chimney liner kit when installing a fireplace insert or a freestanding stove. Made of sheet metal a damper block off plate should fit snugly within the chimney and allow the flue liner to pass through. When the fire is out remember to close the damper. Water vapor is not going to come from the chimney liner and the top and bottom plate are sealed so were does the condensation come from answer it doesn t.

A damper plate located at the throat base of a chimney is usually rectangular in shape and is held in place within the chimney by a surround. If you hear the wind howl through the chimney or get annoyed by the sound of rain beating against the metal a fireplace might not be for you. While the idea of a fireplace is romantic it might be a nuisance in practice. A damper block off plate fits into a chimney and reduces the amount of heat loss around the fireplace insert.

A block off plate is particularly helpful with inserts installed in fireplace on exterior walls with exterior chimneys. Further if you have a fireplace insert and a standard chimney masonry that vents outside the home consider installing a damper block off plate. When you have such a large opening around the liner a large amount of the hot air generated from the wood stove will be rising up into the chimney cavity. A fireplace damper plate is the piece of metal or ceramic that opens or closes to allow or prevent air to pass freely through a chimney or flue.

The block off plate is a horizontal plate that blocks off the opening where normally a damper is in a fireplace. Without one the flue liner which should be insulated and the stove will try to heat the mass of masonry that is exposed to the outdoors. It is very common to have to ovalize a short section of the liner in order to pass the liner through the throat damper. If the circulation is stopped sealed at top plate and at the flue blocking plate then there is no opportunity to collect condensation.

If you have a b vent gas flue commonly just called a chimney vent or a masonry flue that starts in the basement the idea being that it s likely to be used to vent a central heat appliance i would advise you not block off a vent from above. This can result in a significant cooling of the stove and large heat loss. Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening. In this case i strongly advise you to block off the flue from below.

Apply a bead of butyl rubber caulk around three sides of the chimney at. How to block off a fireplace.