Enlarging a window's rough opening

Reply

  #1  
Old 08-22-11, 08:41 AM
chaeberle's Avatar
Member
Thread Starter
Join Date: Mar 2007
Location: USA
Posts: 100
Enlarging a window's rough opening

I'm planning to replace an existing basement window with glass block. The problem I'm facing right now is - the existing opening for the window is about 1/4" too narrow and 1/2" too short for the total width and height of the completed frame. This is a basement window, set into the foundation.

How can I best accomplish this very slight but absolutely necessary enlargement?

I have considered using a router or skill saw to notch out the proper depth of the existing boards in channels and then break out the rest. I've also considered renting a power sander to do the same more evenly (and slowly I'm sure), pulling the framing, running it through a planer and replacing, using NEW wood and planing it to fit, and several other ideas some saner and some crazier.

I really don't know the best way to approach this. Help?
 
Sponsored Links
  #2  
Old 08-22-11, 02:39 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,968
Door #3. Take all the framing down, plane it to the dimensions you want and reinstall it.
 
  #3  
Old 08-23-11, 05:59 AM
chaeberle's Avatar
Member
Thread Starter
Join Date: Mar 2007
Location: USA
Posts: 100
Originally Posted by chandler View Post
Door #3. Take all the framing down, plane it to the dimensions you want and reinstall it.
Blast. I was afraid of that.

I don't have a planar. :/ Time to rent I guess.
 
  #4  
Old 08-23-11, 12:29 PM
Join Date: Dec 2005
Location: USA
Posts: 3,188
Option 4 - remove the existing framing and replace it with 5/4 stock.
 
  #5  
Old 08-23-11, 01:05 PM
chaeberle's Avatar
Member
Thread Starter
Join Date: Mar 2007
Location: USA
Posts: 100
Originally Posted by Wayne Mitchell View Post
Option 4 - remove the existing framing and replace it with 5/4 stock.
I have done the math with every combination of available stock (went and measured it myself) to try to come up with a frame that fits.

Without building up multiple pieces of wood (a thought that just occurred to me), planing or cutting out is the only answer available.
 
  #6  
Old 08-23-11, 06:36 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 20,516
Unless I am not picturing something right... remove all the wood from the masonry opening... make a jamb out of 3/4" thick Azek that will be exactly the right size to fit your glass block, and then place that jamb in the rough masonry opening, level it, square it, shim it, and anchor it. Then install your glass block inside it.

I've seen a reputable masonry company use this technique, they had me build and install the Azek frames for them.

The gap around this frame is covered with interior and exterior trim that is ripped down to size. (more Azek).
 
  #7  
Old 08-25-11, 12:47 PM
chaeberle's Avatar
Member
Thread Starter
Join Date: Mar 2007
Location: USA
Posts: 100
Azek wouldn't have been quite thick enough, I checked. Too bad they don't make Azek in more sizes - would have been a perfect material...

As it turned out I got some new 5/8x6" and used the table saw to plane off 1/8 inch of one of the boards.

Finished product:



Full album of today's work
https://picasaweb.google.com/1069450...wAugust252011#
 
  #8  
Old 08-25-11, 04:14 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 20,516
Azek also comes in 4x8 sheets that are 1/2" thick. You are right that it would have been the best material to use.
 
  #9  
Old 08-25-11, 04:39 PM
chaeberle's Avatar
Member
Thread Starter
Join Date: Mar 2007
Location: USA
Posts: 100
Didn't see any at the local Home Depot - and probably overkill when I only needed 12' by 6" by 5/8".

Anyway I think the window came out ok with the PT.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes