Standard Interior Door Rough Opening

Just add 2 to the width of the actual door size.

Standard interior door rough opening.

This is the minimum width required for a passage door. Doors come in a variety of sizes so a general rule of thumb or practice is considered. This will give you room to space the door frame off of the sub floor. The additional room allows for a 3 4 inch top jamb a shim space above the door jamb and the thickness of.

Maintain a simple consistent nailing pattern. And avoid toenailing when possible. Door widths vary but an easy way to size the rough opening is to use the door width plus 5 in. Standard interior door width is 32 inches.

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 may also find a few narrower doors in stock including 30 inches 28 inches and 24 inches. You should add 2 1 2 to the height of the actual door. Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide.

The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 wide. This takes into account the thickness of a standard 3 4 inch doorjamb on each side. Standard door rough openings. Be sure to allow for about a 1 inch larger opening than the standard door sizes.

There are three simple rules to framing rough openings efficiently. The standard height of the rough opening for a door is the door height plus 2 5 8 inches. For fire rated openings drywall must extend at least 1 2 into frame. Measure the opening to your door frame.

If you re going to frame a rough opening for a door then you ll need to know the unit size. 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. For example let s say we want to frame a 6 8 x 3 0 front entry door. Framing rough opening sizes are really quite simple.

Now all you need to know is how to properly frame your door rough opening.