However a home inspector may tell you that there is no fire stop or that it is installed wrong.
Fireplace attic chase.
Inspecting the firebox clearances is more challenging.
We also recommend to insulate the ceiling of the chase just as if it were in the attic space.
My builder is saying that there is no requirement for a firestop since the chase and pipes are on the outside of the house with no floor or attic floor penetration.
The chimney chase top chimney chase cover is usually metal constructed of formed aluminum or stainless steel.
Doing this leaves room to encircle the chimney pipe.
Smaller dimensions for a rough frame of a chimney chase are about two square feet.
The base of the chase must accommodate the framing dimensions of your fireplace.
After you know where the penetration point will be for both attic and roof add 2 to all sides.
Seldom do we think about the fireplace metal vent pipe running up through the attic and roof.
As currently designed the distance inside the chase to the chimney or firebox will be more like 24 on average with the closest spot about 6.
The interior of the chase has plenty of clearance to the fp and chimney.
Measure the height of the furthest point of the installation.
The rsf manual in the section about chases though they mean outer wall chases says.
You can also taper the chase above the fireplace.
Climb into your attic and locate where your chimney system will enter this space.
They are installed to stop a fire in the chase area where the vent pipe runs through to get to the roof.
Any wood that is too close to the chimney will undergo a process called pyrolysis and even catch fire at temperatures as low as 200 degrees.
Most of the units inspected by chimney professionals are improperly installed and a trip to the attic to check clearances is definitely time well spent.
Fire stops are self describing.
A chimney installer indicated that i would need a firestop in this chase between the first second floor and another one 8 feet up from that.
The manufacturors recommendation is 1 from the fp and 2 from the chimney to combustable materials.