How To Measure Interior Door Opening
Add 1 3 4 door slab depth.
How to measure interior door opening. Measure the height of the door frame from the bottom of the. Measure your door carefully and cut the opening to fit using a reciprocating saw. Standard widths for interior doors are 24 28 30 32 and 36 inches while the height must be a minimum of 80 inches. Measure this edge on the door frame known as the jamb as well.
Remove the casing trim on one side of the door interior side for exterior doors using a flat pry bar. Make the opening the width of the door plus 2 inches 5 1 cm and if additional studs are needed a. It often is easier to install a prehung door than to install a slab door because a prehung door has the doorknob opening cut and the hinges. Figure out the thickness of the door.
For a pre hung door measure the width and height of the slab the rough opening space between the studs with no door installed and the thickness of the jamb. Measure from the door face to the edge of the jamb at the thickest part of the jamb. Measure the door frame carefully for a perfect fit in most cases you can order the new door in the same size as the old one as the door can be trimmed to fit the opening. These numbers should be close to the same but it can be helpful to know both of them.
Measure from the subfloor to the bottom of the header above the door. Rough opening is the size of the hole that is cut in the wall despite the construction materials whether it is wood metal or masonry. For outswing doors measure from the door slab to the interior trim. Measure the width of the door frame from the outside of the jamb on one side to the outside of the jamb on the other side.
At the top middle and bottom of the frame and use the smallest measurement. Depth for an inswinging door requires a door slab to brick mold measurement. Measure in three places. Measure from inside the face of one stud to the inside of the face of the other stud.
The rough opening is typically about 1 1 2 wider than the unit size and about a 1 taller. This is necessary for the following reasons. To ensure accurate measurements first remove the interior casing on the sides and top of your single or double door to reveal rough opening frame. You should know this dimension at the time shopping for the door.
The result is your door opening depth. Hold a tape measure to the edge of the door and record its thickness. For a slab door measure the width height and thickness of the door. A typical door opening is 2 inches 5 1 cm wider than the door size being installed to allow for the thickness of the jamb material and shims to plumb the jamb.