Chimney Chase Fire Blocking

Here is an open chimney chase as it passes through the attic.

Chimney chase fire blocking.

Fire blocking perhaps 3 4 thick plywood or osb fire rated is intended to. In reality they don t stop the fire but they help slow it down from spreading to rapidly. No it won t actually start a fire but neither does a fpe breaker for the most part it is the overloaded or shorted wire that is the immediate cause the breaker just limits or contains the hazard. Weak framing for the exterior load.

They are installed to stop a fire in the chase area where the vent pipe runs through to get to the roof. Any one problem with a chimney chase can lead to fire risk. An insufficient pitch of chase pan. Lack of fire blocking.

Clean the top of the opening cut a hole in the drywall or plywood to fit the pipe leave at least a 1 clearance between the materials and the pipe apply a bead of fire caulk or expandable foam to the top of the opening set the materials around the pipe securing the materials. Securing the chimney chase. Chimney chase insulation is not normally used. Water infiltration behind the siding.

The fire rating and fire safety of the chimney will depend on proper. Combustion air may be drawn into the burner either from a louvered closet door or from a properly installed air pipe from the outside or the attic terminating in the burner or within a foot of the. The chimney chase must be. Therefore fire stops are put in to slow down the spread of a fire should it start.

If the metal chimney pipe is not properly installed heat build up inside the uninsulated chimney chase. A chimney fire should preferably stay in the chimney even at 1 500 degrees at least long enough to get the fire department there to save the roof.