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Figure 17. Ceiling Firestop (Ceiling Side)
Figure 16. Hole and New Framing Members
If the area above the ceiling is
NOT
an attic,
position and secure the ceiling firestop on the
ceiling side of the previously cut and framed hole.
This shows a ceiling
installation.
• Drill a hole or drive a nail through this centerpoint.
• Check the floor above for any obstructions, such
as wiring or plumbing runs.
• Reposition the fireplace and vent system, if
necessary, to accommodate the ceiling joists
and/or obstructions.
• Cut a 11-inch X 11-inch (280 mm X 280 mm)
hole through the ceiling, using the centerpoint
previously marked.
• Frame the hole with framing lumber the same
size as the ceiling joists.
1. Cut the ceiling hole.
2. Add the new framing
members.
JOIST
CEILING FIRESTOP
CEILING
NAILS (4 REQUIRED)
CEILING
NEW
FRAMING
MEMBERS
EXISTING CEILING
JOISTS
CHIMNEY
HOLE
11" (280 mm)
11" (280mm)
NOTE: There must be NO INSULATION or other
combustibles inside the framed firestop opening.