Furnace Flue Pipe Insulation

This allows the hot combustion gases to to move into the chimney easier.

Furnace flue pipe insulation.

You would core a hole 1 4 to 1 2 inch bigger than the outer diameter of the pipe. If the flue is made of pvc pipe you have a high efficiency furnace also called a condensing furnace. The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm.

Seems our furnace flue as it should comes up through the house through the attic and vents out through the roof. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents some high efficiency furnaces also include a plastic pipe for intake area and all types. The duraplus system from duravent is designed to the duraplus system from duravent is designed to stay cool on the outside provide a hot draft on the inside and boost stove efficiency offering a fire safe design that protects both the chimney and building.

Furnace flues require special sealing techniques. Well making sure that you choose the right venting style will protect them. Pitch the flue pipe up toward the chimney. The issue is the flue itself gets nice and warm which means there is effectively a heater going in the attic when the furnace is active.

Because the pipe gets hot building codes usually require 1 inch of clearance from metal flues 2 inches from masonry chimneys to any combustible material including insulation. The pipe then slips into the hole and is sealed with a high temperature silicone caulk. The furnace btw is natural gas and drives a hot water baseboard heat system. How to insulate a metal flue pipe.

The size would depend on your furnace s flue pipe connection. Of duraplus chimney pipe sold separately and features the necessary. Low flue gas temperatures allow for pvc flues instead of metal. The different types of venting.

Because so much heat is removed from the gases and used to heat your home hence the high efficiency rating it cannot rely on natural draft to exhaust flue gases through a vent.