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Installing a pre hung door

May 7, 2010 at 10:21 am | Category: Remodeling Contractor



Door installation can be fast and easy if the rough opening is properly measured and framed. When replacing an existing door, the rough door opening should be 2″ wider and 1″ taller than the finished door dimensions, unless otherwise specified by the door manufacturer. This extra spacing allows you to adjust and plumb your new prehung door assembly in case the opening is not square. Once the door is properly installed, the gap around the edges within the jambs at the top and sides will be equal.

The door should swing into the room against the nearest wall and take up as little living space as possible. Closet doors are an exception: They should swing outward to maximize the closet space.

Since plaster and drywall have different thicknesses, different jamb widths are required. Measure the wall’s finished thickness before purchasing a door. Prehung doors may come either with split or flat jambs.


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