Doors and windows
Before we begin
What you need to know
The OSBLOCK™ system greatly simplifies the installation of doors and windows.
Every block measures 11′ 3/4” of height so the OSBLOCK™ row will adjust to the standard height of doors and windows (84” at the top).
Doors and windows openings chart
Consult the chart below to find the best fit for your windows and avoid cutting the OSBLOCK™ on the horizontal to fit your frames.
* 6’ft. and over openings will require a 2 X 6 vertical jamb to support the lintel.
7ft. and less
Use the OSBLOCK™ as lintel
7ft. and over
Use a LVL beam as lintel
Fit the block
Cut the horizontal tenon inside the opening.
Vertical jamb
If the opening is over 6ft., install a 2″ x 6″ vertical piece to reinforce the structure.
Close to a corner
For doors or windows installed less than 12” from a corner of the construction, we recommend traditional blowing (piece of wood and insulation).
Using a lvl beam?
Enlarge the mortise
Remove about 1/8’’ on each side of the mortise with your saw.
Build a beam
Place the first LVL at the bottom of the mortise. Then screw and glue the other 2 LVLs on each side of the first to make a solid beam. Insulate it with 2” thick foam to give the same finish as your OSBLOCK™ wall.
