Replies

1. 
   BoJangles | Jun 10, 2009 02:47am | #1

   That's right....but I would never order a window like that with the extension jambs attached.  Usually, something in the wall goofs up the thickness and the jambs come out too short.

   I would order the next size wider (usually 7 1/4") and scribe them to fit the wall.  This is especially true when you are remodeling an older home.

1. 
   gb62 | Jun 10, 2009 03:03am | #2

   This is new construction and the walls are actually 8 1/2" thick total (2x6 studs with 2" of polyiso board on the outside). My thinking is to have the carpenter add 2" extension jambs to the 6 9/16" factory jambs will a little bit of reveal.

   If I used your approach (a good approach for a really clean look, and also less labor), I would get 9 1/4" jambs, right? I'd have to see what Marvin would want to charge me for that.

   on edit: what is this "scribing" of the jambs to reduce their width? How do you do that?

   Edited 6/9/2009 8:04 pm ET by gb62

1. 
   JohnCujie | Jun 10, 2009 03:10am | #3

   Why extend the extension? You could just get the smallest size, 4 9/16 I'm guessing, pay less money, and then add one correctly sized extension in the field. Unless you like the other look.John

1. 
   gb62 | Jun 10, 2009 03:37am | #4

   I'm not extending extension jambs. I would only extend the factory jambs. If I get the factory jambs wide enough, I won't need to extend them at all.

1. 
   JAlden | Jun 10, 2009 04:51pm | #7

   All Marvin does is attach clear pine extensions to their standard jambs. It's not really a different jamb.

2. 
   gb62 | Jun 11, 2009 03:54am | #8

   Interesting - thanks for that Marvin info. I've settled on 4 9/16" jambs (order placed today) - the carpenter will add to it, perhaps using a method similar to BoJangles' (I've seen it done that way).

2. 
   BoJangles | Jun 10, 2009 05:43am | #5

   Personally, I don't ever get extension jambs attached to a window.  I order or make the appropriate slightly oversized jambs and attach them myself because it's easier to fit them to the walls. 

   You can just take the individual pieces and set them in place on the window and trace the wall profile on to the jambs with a small straightedge and then cut and plane the jambs to fit the wall perfectly.  I always assemble them together and then attach the whole box to the window.

   In your case, you could easily make up a one piece jamb or do it in two steps if you don't like the looks of a continuous jamb that wide.  You have a lot of choices for jamb material if you are going to paint them. 

   On a one piece jamb of that width, I usually assemble it and then glue it to the window.  Just screw some cross pieces or plywood blocks into the framing at the edge of the window to hold the jambs in place until the glue dries.

    

    

2. 
   MikeHennessy | Jun 10, 2009 02:46pm | #6

   What BoJangles says.

   Mike Hennessy
   Pittsburgh, PA
   Everything fits, until you put glue on it.