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Step 2 - Obtain power vent and
needed exterior louver. I obtained my vent and louver at a
Menards Home Store. It was an AtticAire brand fan with automatic
thermostat capable of moving 1320 cubic feet per minute. The fan was
$54 (not bad) and the louver was $39 (ouch!). I replaced the
fiberglass screen on the louver with 1/8" hardware cloth glued on with
construction adhesive to get better flow.
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Click On Photo To Enlarge |
| Step 3
- Make a hole for the louver. The hole should be 1/4" to 3/8"
bigger than the louver so you can adequately calk around the louver. A
sawz-all type tool works well for cutting this hole if you have wood
siding. The square opening at the top of my hole is where a smaller
louver was previously. I had to place a piece of patching siding at
the top. |
Click On Photo To Enlarge |
| Step 4
- Install louver by fastening to the sheathing. In my case,
because of the thickness of my older wooden siding, I had to cut away
the sheathing and attach the louver to the siding. For newer siding,
you should be able to attach to the back of the sheathing. Caulk
around the entire edge of the louver with a good exterior caulk. Prime
if needed and then touch up around the louver with exterior matching
paint. |
Click On Photo To Enlarge |
| Step 5
- Snap on the louver cover. Not much to this but I thought I would
treat you to a picture of a $39 plastic louver with its cover on! |
Click On Photo To Enlarge |
| Step 6
- Make a frame for your gable vent. In my case, I had to cut the
ends of the trusses and replace the cut out region as shown to the
right. The illustration on the right shows how the new frame (in
green) is used to both form a box for attaching the fan and as a
reinforcement header to make up for the vertical part of the truss cut
out. |
Click On Photo To Enlarge |
| Step 7
- Cut out a piece of sheathing or plywood to attach to the frame of
Step 6. Cut out a hole for the fan, attach the fan to the plywood, and
then attach the plywood to the frame. |
Click On Photo To Enlarge |
