How To Insulate Around A Chimney In Attic

This makes it an ideal insulation material for use in areas that experience high temperatures.

How to insulate around a chimney in attic.

Cut slots about 2 inches deep along the bottom and bend out the tabs. Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue. Cut slots 1 inch deep and a few inches apart along the top and bend the tabs in. Lay a two by four on top temporarily compressing the insulation to a manageable.

Step 1 preparing your liner. How to insulate a metal flue pipe. Cut enough aluminum from the coil to wrap around the lue plus 6 inches. Take the chimney liner out of the package and place it on a flat surface.

Turn the water heater or furnace off and allow the flue to cool to the touch. Measure the circumference of the flue. 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. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.

Form an insulation dam to prevent insulation from contacting the lue pipe. To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. Using the hose clamp feature tighten the bottom connector onto the liner. 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.

Measure from the bottom termination point to the top of the chimney s crown and then add 1 foot. As such it can be used to insulate a chimney. Joe shows you how to make an attic insulation shield when space is an issue.