Chimney Chase 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.

Chimney chase fire blocking.

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. Chimney chase fire blocking requirements. Chimney chase insulation is not normally used. Therefore fire stops are put in to slow down the spread of a fire should it start.

The chimney chase must be. Fire stops are self describing. 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. Fire blocking perhaps 3 4 thick plywood or osb fire rated is intended to.

An insufficient pitch of chase pan. Fire blocking is a required part of safe construction to limit or contain a fire. The fire rating and fire safety of the chimney will depend on proper. Water infiltration behind the siding.

Any one problem with a chimney chase can lead to fire risk. They are installed to stop a fire in the chase area where the vent pipe runs through to get to the roof. Lack of fire blocking. In reality they don t stop the fire but they help slow it down from spreading to rapidly.

If the metal chimney pipe is not properly installed heat build up inside the uninsulated chimney chase. Weak framing for the exterior load.