How To Insulate Around A Chimney In Attic
Cut slots 1 inch deep and a few inches apart along the top and bend the tabs in.
How to insulate around a chimney in attic. Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. Lay a two by four on top temporarily compressing the insulation to a manageable. It is often installed in gaps around the chimney and flue to prevent airflow that can siphon the heat away from the interior of the building.
Measure the circumference of the flue. Form an insulation dam to prevent insulation from contacting the lue pipe. Fiberglass insulation is naturally fire resistant. As such it can be used to insulate a chimney.
Step 1 preparing your liner. Turn the water heater or furnace off and allow the flue to cool to the touch. Take the chimney liner out of the package and place it on a flat surface. Cut enough aluminum from the coil to wrap around the lue plus 6 inches.
Plan to pull up the flooring and layer new insulation on top of the old. Joe shows you how to make an attic insulation shield when space is an issue. This makes it an ideal insulation material for use in areas that experience high temperatures. Finally prepare for adding insulation foam or additional fiberglass batts by installing a second piece of vertical sheet metal that provides a 2 inch airspace around and parallel to the chimney.
How to insulate a metal flue pipe. Using the hose clamp feature tighten the bottom connector onto the liner. Measure from the bottom termination point to the top of the chimney s crown and then add 1 foot.