Garage Door Rough Opening Dimensions

Make the rough opening 3 wider than the garage door also make the rough opening 1 5 taller than the garage door leave a headroom of 14 or 12 minimum install the header jambs and center pad of the frame using a 2 x 6 lumber for the header jambs and center pad leave at least 5 of space on.

Garage door rough opening dimensions. Some manufacturers offer width from 7 up to 18 with 1 increment. This post is intended for purposes of clarifying how garage door sizes work and opening preparation. 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. 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.

Standard sizes standard garage doors in our area are 8 9 16 and 18 wide. Begin by using a tape measure to determine the width and height of the door opening in inches. The size of the door will. First column in the above chart is in imperial system width x height in feet and second column is in metric measurements garage door width x height in centimeters.

The height of the rough opening would be the height of the garage door plus the thickness of whatever you are putting underneath the header in addition to the thickness of the mortar etc. 1 2 or 1 in one direction of the other will won t typically cause you to have to shop for a non standard garage door size. 9 and 10 feet high garage doors are less common. 99 of the residential garage doors that we run across are different than these widths.

Next measure the sideroom or space available on the left and right sides of the opening.