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Figure 2.1F
10. Apply weatherproof sealant all around the fan
housing and secondary flashing, closing the gap
between the flashing, the fan unit, and the tile.
Using an angle grinder, cut the removed tiles as
needed. Re-install the tile around the fan unit.
11. Re-install the hood onto the fan unit.
Shingle Roofs:
12. If you have a shingle roof, insert the reciprocating
saw sideways between the shingles and roof
decking. Starting at the 3 o’clock position of the
vent hole, begin cutting in a sweeping motion
under the shingles, cutting through any roofing
nails or staples. Continue cutting counter-clockwise
around the vent hole until reaching the 9 o’clock
position. Using a roofing knife, cut a 4 inch
horizontal slit in the shingles at the 9 o’clock and
3 o’clock positions of the hole, allowing the fan’s
flashing to slide underneath the shingles.
13. Slide the fan unit underneath the shingles until the
fan reaches the top of the hole. (See Figure 2.3G)
14. Lifting the fan unit up at an angle, apply
weatherproof sealant to the bottom side of the fan
unit. This will help keep the fan in place and create
a tight seal. (See Figure 2.3H)
15. Secure the fan flashing to the roof using a
minimum of 8 roofing nails. Finish applying
weatherproof sealant around the fan and nails and
secure the shingles by re-nailing them into the
roof. (See Figure 2.3I)
16. Re-install the hood onto the fan unit.
Figure 2.3G
Figure 2.3I
Figure 2.3H
