Chimney Throat Damper Installation

Clean out the entire fireplace before you begin.

Chimney throat damper installation.

Throat dampers are located inside of the chimney above the firebox and use a metal plate as a seal. A traditional fireplace damper will usually be positioned just inside the base of the chimney called the throat of the chimney at the top of the fireplace. The larger the fireplace opening the larger the flue. Step 3 removing the damper.

Top sealing dampers when replacing your existing damper a product now available on the market is called a top sealing damper where the damper is actually located at the top of the chimney controlled by a cable that reaches down the chimney which prevents heated air in the winter from being lost up and out of the chimney. These types of dampers aren t designed to seal as tightly and can also rust or corrode making them slide off track if they come in to contact with too much water. Step 2 cleaning the damper. Provide a cast iron damper cast iron ash dump and cast iron cleanout door for permanence.

On nov 20 2018 a fireplace damper usually located at the very bottom of the chimney will keep the warm air in the room from escaping from the home. One type of replacement is to install a top mount damper which has some advantages over the throat damper. Modern insulation often makes the house so air tight that the fire does not have sufficient air for combustion. Repairing a throat damper step 1 cleaning out the fireplace.

After you have it through the damper re form the very end of the liner back to round with your hands so the connector will fit. Leave a minimum of 1 4 between damper and masonry for expansion and contraction of damper. Often times if these are installed in a chimney homeowners will install a top. Common products used in installation rock flex stainless steel chimney liner kit.

A top sealing damper is installed over the chimney top and it creates a secure lid that effectively prevents an air exchange through the chimney. Remove all ashes from the firebox. Take a steel brush or a handheld whisk broom and clean the damper and the area around it. Once you have the liner ovalized install that end first down the chimney flue.

This cost estimate deals with the replacement of a fireplace throat damper door and frame if. Here s what you can expect a throat damper to look like.