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Figure 31. Ceiling Firestop (Ceiling Side)
Figure 30. 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 neces-
sary, to accommodate the ceiling joists and/or
obstructions.
Cut an 11-inch X 11-inch (280 mm X 280 mm) for
D-series or 10-inch X 10-inch (254 mm X 254 mm)
for SLD-series pipe 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.
CEILING
NEW
FRAMING
MEMBERS
EXISTING CEILING
JOISTS
CHIMNEY
HOLE
11" (280 mm) or
10" (254 mm)
11" (280mm) or
10" (254mm)
JOIST
CEILING FIRESTOP
CEILING
NAILS (4 REQUIRED)