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ATTIC INSULATION SHIELD / FIRESTOP SPACER
(Selkirk Model SS Plus & CF)
This shield has three main components: the Attic Insulation
Shield (upper box), the Support Angles and the Joist Shield.
This complete shield must be used at the ceiling level
entering an attic to prevent insulation from coming into
contact with the chimney. It is not used when the chimney
is tightly enclosed up to the roof. It also firestops this level
and because it is a firestop, DO NOT CUT the upper box.
LOCATION
HOLES
SUPPORT
ANGLES
TABS
OPEN HERE IF
UNIT CANNOT
BE SLIPPED
OVER TOP OF
THE CHIMNEY.
FIRESTOP RADIATION SHIELD
INSTALLATION
(Supervent Model SC, & SPR)
1. The Firestop Radiation Shield must be installed whenever
the chimney passes through a floor or ceiling from one living
space to another living space. The firestop Radiation Shield
has been tested and approved to be installed from either
above or below the joist. See figure 11a.
2. If installing the Firestop Radiation Shield from below the
joist, ensure that there is no insulation or other combustibles
within the 50mm(2") air space around the chimney. This
includes the air spaces between the Firestop Radiation
Shield and the joist. See figure 11b.
ENCLOSURE
LIVING
SPACE
LIVING
SPACE
ENCLOSURE
FIRESTOP INSTALLED ABOVE THE JOIST
UPPER BOX (ATTIC
INSULATION
SHIELD)
JOIST
SHIELD
FIGURE 10
FIRESTOP
RADIATION
SHIELD
FRAMING JOIST
(ALL FOUR
SIDES)
CHIMNEY
LENGTH
FIGURE 11a
ENCLOSURE
LIVING SPACE
LIVING SPACE
ENCLOSURE
FIRESTOP INSTALLED BELOW THE JOIST
RADIATION / DUST SHIELD INSTALLATION
(Selkirk Model SS Plus)
All joist areas must be fully framed to accept a Radiation /
Dust Shield. The SS Radiation/Dust Shield must be used at
all joist levels except an open attic level. Use 1-1/2" nails to
attach it to the joists. The shield may be trimmed but must
remain 25mm (1") below the ceiling.
CF INTERMEDIATE JOIST SHIELD INSTALLATION
(Selkirk Model CF)
The CF Intermediate Joist Shield must be used at all joist
levels except an open attic level. It is installed from below
using 1-1/2" nails. It can not be cut down.
INTERMEDIATE
JOIST SHIELD
(MODEL CF)
ATTIC INSULATION SHIELD INSTALLATION
(Supervent Models SC, SPR, SC-1 and ALT)
An Attic Insulation Shield must be installed where the
chimney passes from the lower living space to an upper
enclosed attic space. It is designed to keep insulating
materials away from the chimney and will protect up to
250mm(10") thickness of insulation. In Canada the Attic
Insulation Shield is installed along with the firestop as
shown in Figure 13a. In the United States the Attic Insulation
Shield is installed as shown in Figure 13b.
Page 9
FIRESTOP
RADIATION
SHIELD
FRAMING JOIST
(ALL FOUR SIDES)
CHIMNEY
LENGTH
FIGURE 11b
RADIATION
DUST SHIELD
(MODEL SS
PLUS)
FIGURE 12
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