14
Fig. # 15
Fig. # 16
ROOF BRACKET
1/4" X 1" CARRIAGE BOLTS
SUPPORT SLEEVE
1/4" NUT AND WASHER
ROOF VENT TERMINAL INSTALLATION
Firestops must be used where a vent passes through a floor. Where
a vent passes through a ceiling, a wall/roof thimble must be used to
retain insulation and maintain a 1 inch clearance. Avoid cutting
rafters.
1) Once the terminal location is determined, cut and frame a mini-
mum 10-1/2" round or square opening in the roof. Size of the opening
may have to increase with the pitch of the roof to ensure a 1 inch air
space clearance between vent and combustibles. (see Fig. # 16)
2) Attach the roof brackets to the support sleeve with the 1/4" x 1"
long carriage bolts. (see Fig. # 15)
3) Extend the 8 inch outer flex pipe through the roof opening. Slip
the flex pipe a minimum of 1-1/2 inches over the support sleeve.
Secure pipe to the sleeve with screws provided. Seal the joint and
screw heads using the high temperature sealant provided.
4) Fasten the support sleeve assembly to the roof joists. The sleeve
must be located vertically and plumb and a minimum of 1 inch away
from any combustible material. (see Fig. # 17)
5) Place the roof flashing over the support sleeve and nail securely
to the roof using roofing nails, top and sides UNDER shingles, lower
end OVER shingles to provide a watershed. Make weather tight by
sealing with roofing compound. (see Fig. # 18)
The size of the opening may have to increase with
the pitch of the roof to ensure a 1 inch air space
clearance between vent and combustibles.
Note: Adjustable for various roof
pitch, from flat roof to 12/12 pitch
roof.
f i r e - p a r t s . c o m