Insulation Around Chimney In Attic

Fibreglass is not considered non combustable correct.

Insulation around chimney in attic.

You can wrap the masonry with a 3 5 fiberglass batt and then blow cellulose up to the batts. In either cse it fills the required open air space around the b vent in the un conditioned attic space. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Because the pipe gets hot building codes usually require 1 inch of clearance from metal lues 2 inches from masonry chimneys to any combustible material including insulation.

For diy attic insulation you ve got two choices. Don t you still need a 2 clearance to combustables. The b vent system requires air space clearance as well as clearance from combustibles. How to insulate a metal flue pipe.

Holes hidden in attics basements and crawlspaces are much harder to locate and usually cause bigger problems. Loose fill or batt the common term for blanket insulation. Measure the circumference of the flue. It is an effective barrier to the passage of heat.

Furnace flues require special sealing techniques the opening around a furnace or water heater lue or chimney can be a major source of warm air moving in the attic. Both can be added to uninsulated attics or layered over existing material. Spun fiberglass insulation is like a sponge as far as its ability to collect and hold significant volume of water. In hot climates it prevents heat from outside the house entering reducing the need to use air conditioners.

Fiberglass insulation is commonly used in attics around the chimney stack. Turn the water heater or furnace off and allow the flue to cool to the touch. After the air sealing work was complete including wiring vent and plumbing penetrations throughout the attic the attic received an r 60 blanket of blown cellulose insulation. Fiberglass is one of the most commonly used materials for insulating the home.