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Heat & Glo • VRT-AUB • 2123-980 Rev. H • 5/12
38
Figure 8.4 Installing the Attic Shield
3 FASTENERS
PER SIDE
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
CEILING FIRESTOP
INSTALLED BELOW CEILING
CEILING FIRESTOP
INSTALLED ABOVE CEILING
ATTIC ABOVE
A
PIPE
SLP
A
9 in. (229 mm)
A
C. Install the Ceiling Firestop
A ceiling firestop
MUST
be used between
floors and attics.
•
SLP pipe only
- Frame opening 9 in. x 9
in. (229
m
m x 229
mm
) whenever the vent
penetrates a ceiling/floor (see Figure 8.3).
• Frame the area with the same sized lumber
as used in ceiling/floor joist.
• The ceiling firestop may be installed above or
below the ceiling joists when installed with a
attic insulation shield. It must be under joists
between floors that are not insulated. Refer
to Figure 8.4.
• Secure with three fasteners on each side.
WARNING! Risk of Fire! DO NOT
pack insu
-
lation around the vent. Insulation must be kept
back from the pipe to prevent overheating.
Figure 8.3 Installing Ceiling Firestop