Standard Interior Door Rough Opening

Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide.

Standard interior door rough opening.

Measure the opening to your door frame. Standard interior door width is 32 inches. For example let s say we want to frame a 6 8 x 3 0 front entry door. The standard height of the rough opening for a door is the door height plus 2 5 8 inches.

Typically a pre hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non standard widths. Add 2 to 2 1 2 inch to the measurement of the door s width to determine the total width of the rough opening. You should add 2 1 2 to the height of the actual door. The rough opening for a standard sized interior door is 2 inches wider than the state size of the actual door.

Door widths vary but an easy way to size the rough opening is to use the door width plus 5 in. Just add 2 to the width of the actual door size. The additional room allows for a 3 4 inch top jamb a shim space above the door jamb and the thickness of. You may also find a few narrower doors in stock including 30 inches 28 inches and 24 inches.

There are three simple rules to framing rough openings efficiently. 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. This takes into account the thickness of a standard 3 4 inch doorjamb on each side. Maintain a simple consistent nailing pattern.

The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 wide. Standard door rough openings. And avoid toenailing when possible. Be sure to allow for about a 1 inch larger opening than the standard door sizes.

For fire rated openings drywall must extend at least 1 2 into frame. Doors come in a variety of sizes so a general rule of thumb or practice is considered. If you re going to frame a rough opening for a door then you ll need to know the unit size. Framing rough opening sizes are really quite simple.

This will give you room to space the door frame off of the sub floor.