I'm planning on installing aluminum soffit and fascia on my garage. The
garage is ~20 years old, with existing wood soffit and fascia which hangs
1.25" below the soffit. In other words, the soffit is countersunk approx
1.25". The soffit and fascia look similar to this:
After doing some reading I have come up with two questions for which I can
not find an answer.
1) According to the installation guides the J-channel is screwed/nailed into
the existing soffit along the garage wall, the soffit is cut to the
appropriate length, then placed into the J-channel and the opposite end is
screwed/nailed into the into the bottom of the fascia board. Kind of like
this: http://www.rd.com/18262/article18262-6.html (look at the last pic).
However if I did that my soffit would be at an angle due to the extra 1.25"
of fascia board, which would look like sh*t. So, how would the pros handle
-install it on an angle?
-run a furring strip along the garage to make the J-channel level with the
bottom of the fascia? (This seems like a lot of work.)
-purchase a special product to handle this situation?
F-channel is not an option because it would be difficult to screw into
2) Currently, there are no ventilation holes. Should I drill a few 2" holes
in the existing wood soffit prior to installing the aluminum soffit? I find
my garage is very humid in the winter/spring and my tools are rusting. The
interior of the garage is unfinished (bare studs and trusses). Any advice is
Actually, looking at picture 4, it does look like they are installing it
at an angle (look at the shadow from inside to out). If it seems like
too much of an angle, then either your idea of the furring strip or just
run a circular saw along the edge to cut down the 1.25".
As for 2 - I would think 2" is rather small. Either get a 4" hole saw or
do what they are doing in Picture 1 and use a jig saw.
Just my 2 cents
You need ventilation, it will be covered by the new soffit. We painted a house
and garage once, and the garage had wood soffit that had half inch holes a
couple of inches apart the whole soffit ( they had screen stapled on the inside
to keep bugs out), it was quite cool inside even in 28C weather.
Not claiming to be a Pro here but I have ran the track a few times.
I have never used J-channel for a soffitt install and don't think I would.
The F is much better made than the J to carry the weight. You should
physically compare the two products.
The nail flange on the F will just about even out the difference if you
install it with the flange up. Personally I like a 1/4-1/2" per foot drop
away from the structure.
The furring strip is your best option if you want to proceed using
Here's what I did. I was using vinyl, not sure if it would work with
aluminum, but probably. Kind of hard to describe but I'll try. I had a
long section (30-40') arranged similar to yours.
I started by putting J along one short end, and two full pieces along
the long sides, fastening up into old soffit. Then I slid in enough
soffit pieces to almost fill up the section with J. Then I added two
more lengths of J, filled those in with soffit, and so on. As I got
near the opposite end, I didn't fasten the last 5-6 feet of J, but
left it dangle from the end that was fastened. I carefully slid in
soffit pieces, but now pushed them farther so they overlapped the
previous section. Then I fastened the remaining J, and add a piece at
the end. Finally, I slide the overlapped soffit material back out
into the last part of the J. Took a while to get the hang of it, but
eventually worked out pretty well.
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