How To Insulate Around A Chimney In Attic

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.

How to insulate around a chimney in attic.

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. Using the hose clamp feature tighten the bottom connector onto the liner. How to insulate a metal flue pipe. 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.

Form an insulation dam to prevent insulation from contacting the lue pipe. Plan to pull up the flooring and layer new insulation on top of the old. As such it can be used to insulate a chimney. Cut enough aluminum from the coil to wrap around the lue plus 6 inches.

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 two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue. Step 1 preparing your liner.

To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. This makes it an ideal insulation material for use in areas that experience high temperatures. Measure from the bottom termination point to the top of the chimney s crown and then add 1 foot. Cut slots about 2 inches deep along the bottom and bend out the tabs.

Fiberglass insulation is naturally fire resistant. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Measure the circumference of the flue.