Interior Door Rough Opening

The rough opening commonly framed with two by fours provides a means of attaching the door in place requiring a snug fit within the opening for screws to properly penetrate the framing.

Interior door rough opening.

The width of a door s rough opening is the width of the door plus 2 inches. For example let s say we want to frame a 6 8 x 3 0 front entry door. The rule of thumb to figure out what the rough opening for an interior door is to measure the actual door and then add 2 inches to the width and the height. Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide.

If you re going to frame a rough opening for a door then you ll need to know the unit size. Typically a pre hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non standard widths. Measure the opening to your door frame. This will give you room to space the door frame off of the sub floor.

By scott grice issue 201 if you can cut a 2 4 and drive a nail then you have all the skills you need to frame door rough openings. Interior knockdown frames that wrap wall a opening width 2 b opening height 1 the rough opening would be 38 x 85 for a 3 0 x 7 0 door frame. The 2 inches accounts for a 3 4 inch jamb board on each side plus 1 2 inch adjustment space. Frame a door rough opening a pro carpenter teaches you his 3 simple rules for framing door rough openings efficiently.

Continue reading below our video of the day. The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 wide. You should add 2 1 2 to the height of the actual door. Framing rough opening sizes are really quite simple.

If you are using pre hung. So if you have a 32 x 80 door the rough opening would be 34 x 82. For fire rated openings drywall must extend at least 1 2 into frame.