Rough door openings
One of the most important parts of wall framing is getting
the raw openings on the right. Elements that determine what
height of One of the most important parts of framing walls is getting
the raw openings on the right. Elements that determine what
the height of its opening will be are the finishes of the floor and the
use of subfloor. The widths of the doors will remain constant with
size of a standard door.
In new construction, most doors are hung after the floors are
installed. This allows flooring contractors (tile, hardwood,
vinyl, laminate) to lay your flooring products without
make complicated cuts around door jambs. It also makes it a
clean and tidy door installation. The exceptions to this are
Carpeted floors. The doors are hung before the carpet is laid.
ugly. When doors are hung in carpeted areas, it is a good idea
to wedge them up to 1/2 “, placing a shim under each leg of the jamb.
This eliminates the need to cut the doors after
The carpet is installed.
For a 6 ‘8 “tall (80 inch) door, I like to frame my
opening height at 82 3/4 “. This room for all
situations mentioned above. If your headline material is a
double 2×12, attaching it to the top plate will give you that
height.
Rough openings for door widths are pretty much standard. Tea
The width of the rough opening is 2 inches wider than the door itself.
this leaves room for the door jambs which are generally 3/4 ”
thick. This gives you approximately 1/2 “of play and fit.
room by installing a pre-hung door. For a 36 “(3 ‘0”) door
the approximate opening width would be 38 “. Here are the most
Common door sizes and their rough openings.
Door Size Approximate Opening Size
2 ‘0 “x 6’8” -26 “x 82 3/4”
2 ‘2 “x 6’8” -28 “x 82 3/4”
2 ‘4 “x 6’8” -30 “x 82 3/4”
2 ‘6 “x 6’8” -32 “x 82 3/4”
2 ‘8 “x 6’8” -34 “x 82 3/4”
2 ’10 “x 6’8” -36 “x 82 3/4”
3’0 “x 6’8” -38 “x 82 3/4”
To calculate the approximate opening for double or French doors
doors, take the door size multiplied by 2 and add 2 “.
Common sizes for exterior doors are 2’8 “and 3’0”.
doors. The 2’8 “is generally used for the rear door and the
access door from the garage. Door that size for outdoor use
it is used less these days due to the size of
Appliances and Furniture. Exterior doors with side lights and
Sliding patio doors, rough openings vary from manufacturer to manufacturer.
maker. These must be verified and obtained from the
pray.
Getting the openings raw right the first time keeps the
Sawzall in its carrying case and having to change the
opening after the walls are covered with plaster and painted.
Mike Merisko (c) 2006
http://www.sawkerfs.com