10:33AM | 02/01/04
Member Since: 01/31/04
1 lifetime posts
(this job is for a new garage wall for which there is no drywall, and only the Tyvek with hardiplank on the outside. the studs are 16" on center).

Basically, I need to install a large window-type AC unit through the hardiplank. The unit is 28" wide, 20" tall, which just fits between two 2x4's (if I cut out 20" vertical in the center stud.) I have several questions.

1. will drilling a hole through the hardi followed by cutting out a square in the hardi with a scroll saw (special blade) do a good job? (what blade do i need??)

2. Since the unit is so heavy, should I run some additional 2x4's next to the outer vertical ones on the sides of the AC unit?

3. Is 1/2" or 3/4" thick pine good enough for the molding on the edge on the outside?

4. What kind of nail should I use to fasten the pine to the hardi?

5. Once molding is up, what is the best caulk for exterior?

A lot of questions, but it's a new garage so I want it to be a good job. TX


11:32AM | 06/19/14
I have the same project. did you get an answer elswhere?


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