Make the rough opening 3 wider than the garage door.
Garage door sizes rough opening.
Install the header jambs and center pad of the frame using a 2 x 6 lumber for the header jambs and center pad.
Getting the rough opening size right the first time will save you from frustration when installing your doors.
The span above the door opening is framed with a long header that supports the wall area above the door and this header will need to be raised or rebuilt in order to increase the overall door size.
In our business we refer to rough openings as the size of the opening before the finished lumber has been added to the jambs.
Also make the rough opening 1 5 taller than the garage door.
99 of the residential garage doors that we run across are different than these widths.
If there isn t enough room above the opening this can t be done without raising the roof of the garage.
Just add 2 to the width of the actual door size.
Nail or screw 2 x 6 jambs to the framing on the top first and then the sides of the rough opening.
This post is intended for purposes of clarifying how garage door sizes work and opening preparation.
1 2 or 1 in one direction of the other will won t typically.
On each side although some systems can require up to 5 1 2 in.
Step 1 measure the old door if you are replacing an existing door with one of the same size or the new door of choice if you are building a new garage.
Cut the header from 2 x 12 lumber and to a length of the rough opening plus 6 inches.
Words like rough opening are thrown around and i m not sure if we are speaking about the same thing.
Standard width and height will be determined by the type of specific garage door.
The rough opening is equal to the size of the door but you need to figure back head and side room before choosing and installing the new garage door.
This will give you room to space the door frame off of the sub floor.
While building a new garage it is better to check available sizes make a selection and create a rough opening according to manufacturer specifications.
Leave a headroom of 14 or 12 minimum.
Install the header on top of the trimmers and nail.
The size of the door will be approximately the same as this sometimes called the rough opening next measure the sideroom or space available on the left and right sides of the opening.
After installing the jambs your garage door opening should now be the same size as the garage door.
You should add 2 1 2 to the height of the actual door.
Framing rough opening sizes are really quite simple.
Leave at least 5 of space on the sides of the door.
However if you are putting bricks thick river rock stones marble or anything else on both sides that is more than 1 thick you will want the rough opening the same.
Most vertical track systems with torsion springs or other hardware require 3 3 4 in.
Typically one big door for two car garage will cost less comparing to installing separate smaller doors for.
Standard sizes standard garage doors in our area are 8 9 16 and 18 wide.