Windows

Builder 3&2 Volume 02 - Construction manual for building structures
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Figure 4-22.-Plumbing an exterior doorjamb. With the sill level, drive a 16d casing nail through the side casing into the wall frame at the bottom of each side. Insert blocking or wedges between the trimmer studs and the top of the jambs. Adjust the wedges until the frame is plumb. Use a level and straightedge for this procedure (fig. 4-22). NOTE When setting doorframes, never drive any of the nails completely into the wood until all nails are in place and a final check has been made to make sure that no adjustments are necessary. Place additional wedges between the jambs and stud frame in the approximate location of the lock strike plate and hinges. Adjust the wedges until the side jambs are well supported and straight. Then secure the wedges by driving a 16d casing nail through the jamb, wedge, and into the trimmer stud. Finally, nail the casing in place with 16d casing nails. These nails should be placed 3/4 inch from the outer edges of the casing and spaced 16 inches OC. After the installation is complete, a piece of 1/4-or 3/8- inch plywood should be lightly tacked over the sill to protect it during further construction work. At this time, many Builders prefer to hang a temporary door so the interior of the structure can be secured and provide a place to store tools and materials. Hanging the door and installing door hardware are a part of the interior finishing operation and will be described later in this TRAMAN. PREHUNG EXTERIOR DOOR UNITS A variety of prehung exterior door units are available. They include single doors, double doors, and doors with sidelights. Millwork plants provide detailed instructions for installing their products. First, check the rough opening. Make sure the size is correct and that it is plumb, square, and level. Apply a double bead of caulking compound to the bottom of the opening, and set the unit in place. Spacer shims, located between the frame and door, should not be removed until the frame is firmly attached to the rough opening. Insert shims between the side jambs and trimmer studs. They should be located at the top, bottom, and midpoint of the door. Drive 16d finishing nails through the jambs, shims, and into the structural frame members. Manufacturers usually recommend that at least two of the screws in the top hinge be replaced with 2 1/4-inch screws. Finally, adjust the threshold so that it makes smooth contact with the bottom edge of the door. After a prehung exterior door unit is installed, the door should be removed from the hinges and carefully stored. A temporary door can be used until final completion of the project. WINDOWS LEARNING OBJECTIVE: Upon completing this section, you should be able to identify the types of windows used in frame structures, and describe installation procedures. The primary purpose of windows is to allow the entry of light and air, but they may also be an important part of the architectural design of a building. Windows and their frames are millwork units that are usually fully assembled at the factory, ready for use in buildings. These units often have the sash fitted and weather stripped, frame assembled, and exterior casing in place, Standard combination storms and screens or separate units can also be included. Wood components are treated with a water-repellent preservative at the factory to 4-16

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