Securing the chimney chase.
Chimney chase fire blocking.
Here is an open chimney chase as it passes through the attic.
Fire blocking perhaps 3 4 thick plywood or osb fire rated is intended to.
Fire stops are self describing.
Chimney chase insulation is not normally used.
The fire rating and fire safety of the chimney will depend on proper.
Lack of 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.
Weak framing for the exterior load.
An insufficient pitch of chase pan.
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.
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.
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.
Any one problem with a chimney chase can lead to fire risk.
Water infiltration behind the siding.
Therefore fire stops are put in to slow down the spread of a fire should it start.
Fire blocking is a required part of safe construction to limit or contain a fire.