Instruction

ROOFING
FASTENERS
ADJUSTABLE
FLASHING
11
B3. Extend the Firestop Radiation Shield
tube extension (keep at least 1” overlap), and
secure in place using sheet metal screws.
B4. Slip the Attic Insulation Shield over the
Chimney and Firestop Radiation Shield until
the base sits squarely on the framed opening
(Fig.10, 13). If desired, non-combustible
insulation may be installed in the Attic
Insulation Shield. Before installing, add a 2”
thick blanket of insulation around the inside of
the Attic Insulation Shield, then slip over the
Chimney.
B5. Secure the Attic Insulation Shield to the
top of the framed opening using at least (3)
8-penny nails or (3) #8, 1-1/2” wood screws
per side (Fig.13).
B6. Wrap the Collar of the Attic Insulation
Shield around the chimney and fasten it
loosely. Slide the Collar down to meet the
Attic Insulation Shield. Slip the tab through
the adjacent slot and fold it back to tighten and
secure the Collar (Fig.14).
Figure 14
Figure 15
9. Spray Foam Insulation Shield: A Spray
Foam Insulation Shield is necessary whenever
spray foam is used to instulate the roof rafters.
Install the Spray Foam Insulation Shield in the
same way as a Support Box, however only 1
screw or nail per side is needed. The Spray
Foam Insulation Shield may be insulated with
non-combustible insulation as specied.
10. Attach Flashing: In new construction,
assemble the Chimney Sections to a point
above the roof, then slip the Flashing over
the chimney. On an existing roof, center
and install the Flashing before extending the
chimney above the roof. Allow space to permit
sliding the next Chimney Section up through
the Flashing. Always insure the chimney
remains vertical (use a level), and that at least
a 2” clearance to combustible materials is
maintained all around. Install the upper edge
of the Flashing under the roong. Nail to the
roof along the upper edge and down each side
with 1” roong nails. Do not nail the lower
edge of the Flashing (Fig.15). Seal top and
upper sides of ashing with roong compound
or sealant. Be sure to follow local building
practices, as needed. Seal all nail heads with
a non-hardening waterproof sealant. On at
or tarred and graveled roofs, nail and seal the
Flat Roof Flashing to the roof on all sides with
roong compound. Do not put screws through
the Flashing into the Chimney Pipe.
11. Finish Top: Apply a high-temperature
(500ºF), non-hardening waterproof sealant
around the chimney at the point where the
Storm Collar will meet the chimney just
above the Flashing (Fig.15). Slide the Storm
Collar down over the chimney to the top of
the Flashing. Tighten and seal the Storm
Collar against the sealant. After installing
sufcient Chimney Sections to meet the height
requirement (Fig.1), attach the Chimney Cap
onto the top of the chimney by holding the
PUSH COLLAR DOWN
TO FLASHING AND
SEAL WITH NON-
HARDENING HIGH
TEMP SILICONE