Firestop Radiation Shield Installation - Selkirk SUPERVENT Directives D'installation Et Guide D'entretien

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FRAMING DIMENSION CHART
Table 2
FOR ATTIC INSULATION SHIELD
DIAMETER
5"
OF CHIMNEY
FRAMED
11 x 11
OPENING
7 -1/4"
"A" DIM.
11"
"B" DIM.
11-13/16"
"C" DIM.
13"
"D" DIM.
20"
"E" DIM.
When an Attic Insulation Shield is required above the Decorator
Ceiling Support into an attic as shown in Figure 4, ensure that the base
of the shield is flush with the top of the joist framing and nail in place.
The telescoping portion of the AIS will eliminate the need to trim the
bottom when installed immediately above this support. When fully
extended, the AIS will also provide joist shielding when installed in a
2 story main floor or basement applications (see Figures 10 & 13).
If insulation is blown in and adheres to the chimney pipe, it must be
brushed off to eliminate any possible contact of this material with the
chimney surface.
At the level where the chimney penetrates the air/vapor barrier, special
attention is required. Seal the vapour barrier to the Support or Attic
Insulation Shield or Wall Thimble using an appropriate caulking
compound as per the requirement of local authorities.
FIGURE 10
Storm Collar
Roof Joist
(Framed all 4 sides)
Attic Space
Ceiling Joist
(Framed all 4 sides)
Living Space
Floor, Ceiling Joist
(Framed all 4 sides)
Stove Pipe Adaptor
Two Story Main Floor Installation
6"
7"
8"
12 x 12
13 x 13
14 x 14
8 -1/4"
10 -1/4"
9 -1/4"
12"
13"
14"
11-13/16"
11-13/16"
11-13/16"
14"
16"
15"
20"
20"
20"
Rain Cap
Ventilated Flashing
Attic Insulation Shield (AIS)
Chimney Sections
Framed Enclosure
Decorator Ceiling Support
D
FIGURE 11
FIRESTOP RADIATION SHIELD (FRS)
A Firestop Radiation Shield (FRS) - also known as a Firestop Joist
Shield, is for use in vertical enclosures where the chimney passes
through a floor /ceiling opening, from one living space to another living
space, as shown in figures 12 & 13. It is installed from either above or
below the joist. It is designed to provide proper firestopping between
floors and to keep direct radiation from the chimney away
from the joist framing.
FIGURE 12
Firestop Radiation Shield Installed into
Framed Joist Opening from Above or Below
Install the Firestop Radiation Shield (FRS) from below or above (Figure
12) the framing into the framed opening outlined in Table 1 and nail in
place using 1" spiral nails. Ensure no insulation or debris is within the
2" air space clearance around the chimney. This includes the air space
between the Firestop Radiation Shield (FRS) and the joist framing.
When the chimney is enclosed in the attic area, a Firestop Joist Shield
(FRS) must be installed at the ceiling level. If the base of the Firestop
Joist Shield (FRS) does not fit flush with the ceiling frame, measure the
distance that the base is sitting below the framing and trim that amount
off of the top of the FRS before securing into place.
8
B
A
C
E

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