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Slide the upper (adjustable) shield up as high as possible (keeping
a minimum of 1" overlap on the lower shield). Secure to lower fixed
shield using the 4 sheet metal screws provided through the pre-
punched holes in the upper shield (see Figure 5).
Upper Adjustable Shield (keep
a minimum of 1" overlap over
the Lower Fixed Shield)
Lower Fixed Shield
Secure Base Plate of AAIS
with a minimum of 2 nails or
wood screws per side
Figure 5 - Adjustable
Attic Insulation Shield
Fully Seated on Top of
Framed Opening
Slide the AAIS over the pipe extending into the attic space until the
base plate of the AAIS is placed on the framed opening around the
chimney and fully seated (see Figure 5).
Secure the base plate to the framing with at least 2 nails or wood
screws per side (see Figure 5). Ensure the spacers found under the
base plate are within the framed opening.
Roof Joist
Unenclosed
Attic Space
Ceiling Joist
(Framed all 4 sides)
Enclosed Living
Space
Ceiling/Floor Joist
(Framed all 4 sides)
Enclosed Living
Space
Figure 6 - Adjustable Attic
Insulation Shield in an open
attic space of a basement 2
story installation
2
The upper shield can be trimmed down to ensure the AAIS will fit in
a low clearance area in the attic at the soffit end. Ensure the top of
the shield is 2" higher than the level of insulation and it overlaps 1"
on the lower fixed shield.
If greater height restrictions do exist, it is permissible to enclose
chimney in the attic space by installing the Firestop Spacer (FS) at the ceiling
level and a Rafter Radiation Shield (RRS) installed at the roof level. The
Secure upper
enclosure must maintain the required minimum air space clearance of 2"
shield to lower
(50mm) to the chimney pipe all the way to the underside of the roof deck.
shield with
sheet metal
screws - keep
a 1" minimum
overlap
Deluxe Rain Cap
Storm Collar
Ventilated Flashing
Maximum insulation level
keep below bead
Figure 7 - Enclosed attic
Adjustable Attic
Insulation Shield (AAIS)
space with Firestop
Spacer and Rafter
Radiation Shield
Firestop Spacer
The lower telescoping joist shield will extend below the ceiling joist
Chimney
and sit inside of the Ceiling Support or on top of the Firestop Spacer.
Ensure it is properly extended down through this area.
Enclosure
NOTE: It is permissible to add Universal Insulation Shielding (JUSI)
in the Adjustable Attic Insulation Shield (AAIS) to reduce cold air
infiltration into the dwelling. See instructions supplied with the
Universal Insulation Shielding.
Firestop Spacer
Refer to the main instructions on information of other components
Chimney
needed for the installation.
Enclosure
Ceiling/Floor Joist
(Framed all 4 sides)
Decorator Ceiling
Support
Deluxe Rain Cap
Storm Collar
Ventilated Flashing
Roof Joist
Rafter Radiation
Shield
Enclosure
Ceiling Joist
(Framed all 4 sides)
Firestop Spacer
Chimney
Enclosure
Ceiling/Floor Joist
(Framed all 4 sides)
Decorator Ceiling
Support
the
Enclosed
Attic Space
Enclosed Living
Space
Stove Pipe
Adapter
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