How To Close A Flue With Sheet Metal

Position your cap on top of your chimney so the bottom edges are flush with the sides of the crown.

How to close a flue with sheet metal. Certified double wall flue pipes are another option. Ask a wett certified professional for more information about how double wall pipes can reduce clearance requirements. The pipe stub that protruded through the cei. Our new 40 year old house had an old metal chimney that was once connected to an wood stove in the living room.

Drill 1 2 pilot holes per side into the crown with a masonry bit. Apply a bead of butyl rubber caulk around three sides of the chimney at. Flue dampers can therefore typically be opened and closed by turning the damper controls either to the right or to the left. I ve never made anything with sheet metal before or used a rivet gun but i was surprised at how easy it is.

You basically just put the rivet in the gun stick the end of it into the holes to be joined then squeeze the handles until you hear a pop. Flue dampers can typically rotate 360 degrees in either direction and so you can put the damper in a completely closed position completely open position or anywhere in between. The clearance reduction is usually measured from the rear of the stove to the original combustible wall not to the sheet metal. Cut a semicircular notch into one end of each sheet that is.

Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening. This fact sheet is intended only to provide an introduction to the topic of reducing. Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue. Regardless of whether you are closing your chimney up permanently or temporarily you need to ensure the top of the flue is capped with a high quality metal or copper cap so that very little moisture can get inside the fireplace while also keeping unwanted animals such as squirrels birds and bats from crawling inside.

These incorporate built in shielding. Locate the holes running along the bottom flange of the cap so you know where to position the pilot holes.