It is very common to have to ovalize a short section of the liner in order to pass the liner through the throat damper.
Chimney flue block off plate.
Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening.
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.
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.
Made of sheet metal a damper block off plate should fit snugly within the chimney and allow the flue liner to pass through.
A block off plate is particularly helpful with inserts installed in fireplace on exterior walls with exterior chimneys.
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.
How to block off a fireplace.
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.
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.
To prevent this from happening install a block off plate.
A damper block off plate fits into a chimney and reduces the amount of heat loss around the fireplace insert.
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.
While the idea of a fireplace is romantic it might be a nuisance in practice.
You can follow these easy steps to block off your fireplace or even to close it up completely.
Apply a bead of butyl rubber caulk around three sides of the chimney at.
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.
In this case i strongly advise you to block off the flue from below.
This will keep cold air from wafting into your home.
This opening will vary in size but generally you will be installing a 6 or 8 chimney liner.
This can result in a significant cooling of the stove and large heat loss.
When the fire is out remember to close the damper.
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.
