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26 Mounting the Mast
2. Hold the mounting foot in a position so the center line is centered
on a rafter.
3. Use a bubble level to make sure the center line is perfectly vertical.
Yes
N
o
Sealant
Level on center
line of template
Level
Not Level
4. Use a pencil to mark the six holes in the mounting foot.
5. Remove the mounting foot and drill a 3/16" hole in the two center
line locations you marked.
6. Drill four 3/16" holes in the four outside corner locations you
marked.
7. Fill all six holes with a small amount of roof sealant.
8. Use a wrench to loosen the nuts on the mounting foot so you
have easier access to the mounting holes.
9. Hold the mounting foot over the holes so the top part of the mast
will rotate and point straight up.
10. Use two 5/16" x 3" lag screws in each of the center line holes to
attach the mounting foot to the roof. Secure the four outside
corner holes with four 1/4" x 2" lag screws. Securely tighten all
six screws.
11. Seal the mounting foot with roof sealant. When applying the
sealant, make sure you seal the areas shown in the figure below.
Steps 2 & 3: Center the mounting on a rafter and make sure that it is level.
Step 9: Make sure the top part of the
mast points straight up.
Step 11: Seal the mounting foot to
avoid water leakage.
Mounting the Mast on a Roof
12. Go on to the next section, “Final Installation,” to complete the
installation process.