How To Install Prehung Outside Door

Prehung doors typically come from the factory with a one eighth inch gap between the edges of the door and the door jamb.

How to install prehung outside door. How to install an exterior door. Begin installation by first running a thick bead of latex caulk along the subseal at the bottom of the old door opening. The key things to remember are setting the door level shimming the frame so the gaps between it and the door are even and taking steps to waterproof the installation. Check for plumb and shim the frame as necessary.

A wood framework attached to the masonry inside a window or a door rough opening. Remove the old door. If you plan to install hardwood floors which are 3 4 inch thick you should cut down the jambs by 7 8 inch 3 4 inch for the floor plus 1 8 inch to reduce the gap under the door. It s a good idea to measure the actual door too.

If it isn t level set the door unit in place and shim the low side until it is level. Before removing the old door have the new one on hand. Door system pre hung door a pre cut and assembled unit consisting of a door slab prepared for the locking or passage hardware hung on hinges in a wood or metal frame. Hinge jamb the side of the jamb on which the hinges of a door are installed.

Then lift the new pre hung door into the center of the rough opening positioning the bottom seal first then tilting the door into place. This provides clearance for a carpet and pad about 1 inch. Remove the interior trim and measure the width and height of the frame. The new door should be 1 2 inch less than the height of the rough opening and 3 4 inch less in width.

For instructions on interior doors read how to install a prehung interior door. A prehung door usually has a 1 1 4 inch gap at the bottom of the door. Installing a prehung exterior door is straightforward. Assuming the wall is plumb and that the rough sill and opening are flashed the first step is to check the rough sill for level.

Add shims about every 6 in.