| ACCESSORIES
The following are a few items that can be added to a structure to enhance
efficiency:
WINDOW SCREENS
Screen sash is usually 3/4-inch stock; however, for large windows and
doors 1 1/8-inch material is frequently used or 3/4-inch lumber is braced
with a horizontal member.
Construction
Window screen sash is usually 13/4 or 2 1/4 inches wide. Screen may
be attached by stapling or tacking. Cut the screen 1 inch wider and longer
than the opening. Cover the edges with molding. Next, rabbet the inside
edges about 3/4 x 1/2 inch. Attach the screen in the rabbet, and nail
3/8- x 1/2-inch molding flush with the sash face.
Joints
Window sashes may be made with open mortise, four tenons, and with rails
tenoned into stiles; with half-lap corners; or with butt joints or corrugated
fasteners. In either of the first two cases, the joints may be nailed
or glued.
Attaching Screen Material
When attaching screen material, start at one end and tack or staple
it with copper staples, holding the screen tightly. Next, hand-stretch
the screen along the side, working toward the other end. Attach it, making
sure the weave is parallel to the ends and sides. Tack the sides and apply
the molding. Copper staples should be used for bronze or copper screen
and cadmium staples for aluminum screens.
DOOR SCREENS
Door screens are made as shown in Figure 8-16. Two separate frames are
made of 1 x 4 material for the sides and top; 1 x 6 material is used for
the bottom and middle pieces. (Figure 8-17 shows door screen sizes.) The
first frame is made of two side pieces as long as the door. The crosspieces
are as wide as the door, less the width of the two side pieces. This frame
is put together with corrugated metal fasteners or triangular corner splices;
then, the screen wire is applied. The second frame is made with the crosspiece
as wide as the door. The side pieces are cut to correspond with the distance
between the cross-pieces. The second frame is placed over the first frame
and nailed securely. For push-and-pull plates, two short 1 x 4 braces
are nailed to the side opposite the
hinge side.
HOODS OR CANOPIES
Hoods or canopies are used in tropical climates to protect
the screened opening at the ends of the buildings. They
are framed to the end walls with short rafters, which are
nailed to the building with knee braces. The rafters are
nailed to the wall, their bottom edge flush with the bottom
of the end plate. The rafters and braces are made of 2 x 4s
nailed with 8d or 10d nails. The sheathing is of the same
material as the roof sheathing and is covered with roll
roofing. The hood should extend about 2 1/2 or 3 feet from
the building. Figure 8-18, page R-14. shows hood or
canopy details.
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