Hello,
I’m doing 2×6 exterior walls in my house. For the windows, the manufacturer (Marvin) sells extension jambs (which I have ordered with all windows). My question is regarding the exterior doors:
Is there a special door sill/threshold that I need for 2×6 walls, or do I just extend at the jambs and leave the threshold alone?
Thanks,
Roger <><
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Replies
Just extend at the jambs and leave the threshold alone.
Just to add, they do sell doors with thresholds/jambs for 2x6.
Like ACI said, buy a door for 2x6 construction. Adding extension jambs can interfere with the door opening and closing if you don't keep them back far enough. Most rough openings aren't framed wide enough. The strike will carve a nice slot in the extensions. When ordering for 2x6 construction, remember the parts are built for 6 9/16" walls. This means 1/2" sheetrock and 7/16"/ 1/2" sheathing. I was just building extensions today for a house that has 3/4" sheathing and the factory extensions are too small. Crummy framing didn't help either.
Beat it to fit / Paint it to match
Some door manufacturers (Stanley comes to mind, not that I'm recommending it) offer an extension jamb kit if you need to adapt a stock door to a nonstandard wall width. The kit usually comes with side and head jamb extensions as well as an aluminum threshold extension.
Well, I'm just finishing up a home with 2 X 6 exterior (and some interior) walls with 5/8" ply both sides (shear issue).
So the door issue has been really fun! (2X6 studs, 1 1/4" plywood and 1/2" sheet rock = 7 1/4" jams, minimum. But my local yard has a millwork shop and I had them prehang all the doors with custom jams. (final jam width was actually 7 5/16").
The doors were all Simpson customs with the exception of an Anderson outswing patio door, but the shop was able to build precise jam extensions for that one.
So the answer is yes; in fact, you could build a house with 2X12 walls, (or deeper, like in a straw bale house) and get jams to fit the RO.