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.
Chimney flue block off plate.
This opening will vary in size but generally you will be installing a 6 or 8 chimney liner.
This will keep cold air from wafting into your home.
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.
Further if you have a fireplace insert and a standard chimney masonry that vents outside the home consider installing a damper block off plate.
To prevent this from happening install a block off plate.
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.
When the fire is out remember to close the damper.
The block off plate is a horizontal plate that blocks off the opening where normally a damper is in a fireplace.
While the idea of a fireplace is romantic it might be a nuisance in practice.
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.
Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening.
Made of sheet metal a damper block off plate should fit snugly within the chimney and allow the flue liner to pass through.
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.
In this case i strongly advise you to block off the flue from below.
You can follow these easy steps to block off your fireplace or even to close it up completely.
A damper block off plate fits into a chimney and reduces the amount of heat loss around the fireplace insert.
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.
How to block off a fireplace.
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.
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.
