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dirtmcgirt 12-19-2012 01:15 PM

Installing a new window, cedar siding foam sheating
Okay, so I'm working on remodeling my basement and one of the things that I'd like to do is add a window to a wall that currently does not have one. I'm fine with the header framing aspect of it all, but my issue with attaching the window from the outside.

My basement stud walls are 2x6 covered in foam sheathing, then cedar lap siding; no hard plywood or osb sheating. So when I remove the siding, I'm not going to have anything to nail the nailing flange to, unless I hit the studs.

Should I add 2x6 studs around the entire opening of the cutout in order to have something to nail into? And I'm pretty sure that the foam needs to be over top of the window once installed, correct? Any tricks to that?

Fortunately I do have another window in my basement that I could peel the drywall off and look at if necessary.

Any ideas or should I definitely call a pro for this part of the project?

woodworkbykirk 12-19-2012 03:03 PM

if you plan on using a window that has a nailing flange as long as there is a king and jack stud on teh sides along with a proper sil and header you should have more than enough meat to nail to.. provided you strip off the siding to nail through.. otherwise your going to have to anchor it from the inside via hurricane straps, shims and screws through the jamb into the framing via retrofit installation

carpdad 12-19-2012 03:38 PM

As long as the wall is wood, it is fairly simple to cut the opening and box for the window. Then use 2x8 or the size necessary to take the rough box out to the sheathing. So you'll have to plan for double thickness 2x opening for the window.
Foam panel sheathed houses have diagonal braces in the wall studs. You can't cut through this brace.

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