How To Close A Flue With Sheet Metal

The clearance reduction is usually measured from the rear of the stove to the original combustible wall not to the sheet metal.

How to close a flue with sheet metal.

These incorporate built in shielding. 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. Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue. Position your cap on top of your chimney so the bottom edges are flush with the sides of the crown.

Apply a bead of butyl rubber caulk around three sides of the chimney at. Our new 40 year old house had an old metal chimney that was once connected to an wood stove in the living room. Cut a semicircular notch into one end of each sheet that is. The pipe stub that protruded through the cei.

Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening. Locate the holes running along the bottom flange of the cap so you know where to position the pilot holes. Ask a wett certified professional for more information about how double wall pipes can reduce clearance requirements. Certified double wall flue pipes are another option.

Shield mounted to the flue pipe 225 mm 9. Drill 1 2 pilot holes per side into the crown with a masonry bit. The shield can be constructed of sheet metal copper cement. Using a piece of 24 gauge sheet metal installed on spacers 1 from an existing wall and floor will reduce stove clearances by 66 or from 36 to 12.

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. 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.