Marvin Window manual Fastening Methods cont, Jamb/Sill Screws

Fastening Methods (cont.)

Jamb/Sill Screws

1.After removing covers or liners, fasten units to the framing with #8 wood screws or 3/16″ concrete an- chors1. Adjust length of fastener so that it penetrates no less than 1 1/4″ (32) into framing/opening. When fastening through the sill, always pre--drill and fill hole with sealant before driving the screw. Always place a shim behind or above the screw location on jambs and head jambs.

NOTE: When using masonry anchors, be sure to follow manufacturer’s guidelines for proper installation. Some types require pre--drilling.

2.On Casemaster units, position the screw so that it misses any operating hardware (if applicable). With typical installations, you should be able to locate the screw in the center groove in the frame and just to the exterior of the kerf that holds the head jamb stop. See figure 9.

Fastener

Fastener

Figure 9: Exterior view, fastening through Casemaster frames.

3.On Ultimate Double Hung units, locate the screw in the jamb carrier kerf (jambs) and in the kerf used to hold the parting stop (head jamb). Make sure to countersink the screw so that it doesn’t interfere with installation of the jamb liner and/or parting stop. See figure 10.

Figure 10: Exterior View, fastening through UDH frames.

4.On IZ3 Ultimate Double Hung units, fasten through the “Storm Brackets” on the jambs with two

#8 x 2 1/2″ (64) wood screws through the top bracket and one screw through the bottom bracket. See the “Special Fastening Systems” section for more de- tails.

1Use concrete anchors when wood buck material is less than 2″ nominal thickness.

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