Put on work gloves.
How to insulate chimney in attic.
Set up a cordless drill with a.
Turn the water heater or furnace off and allow the flue to cool to the touch.
How to insulate a metal flue pipe.
Take the chimney liner out of the package and place it on a flat surface.
Using the hose clamp feature tighten the bottom connector onto the liner.
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Fill every joist space completely and evenly with the insulation leaving attic vents uncovered.
This makes it an ideal insulation material for use in areas that experience high temperatures.
Measure and cut the flashing for each side of the chimney using sheet metal cutters.
Level uneven spots with a rake.
Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around 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.
To block the air pathway the technician cut 26 gauge metal flashing to fit over the gaps and sealed the joints between the metal and the masonry chimney and the wood framing using high temperature caulk in this example 3m fire barrier sealant.
Measure the circumference of the flue.
Sealing an air leak around a chimney in the attic 1.
Fiberglass insulation is naturally fire resistant.
As such it can be used to insulate a chimney.
Cut the liner to these measurements leaving a neat edge.
Access the attic through a crawl space in the ceiling using a stepladder or use or the attic stairs.