Installation instructions for double-hung windows.

1. Remove inside trim / stops at sides and top. The top trim may need to be cut down when replacing. NOTE: Care in removing the trim may allow you to reuse it.

   a.) Cut pulley cords and remove lower sash.

   b.) Remove parting beads at sides and top.

   c.) Cut pulley cords and remove top sash

   d.) Remove pulleys, weight cavity covers, and the weights. Fill this top and bottom cavity with fiberglass insulation. If desired, replace covers or cover holes with wood. NOTE: If original windows have vinyl or aluminum jamb liners, use a flat pry to remove liners.

2. Jamb depth of the Comfort Plus vinyl replacement window is 3 1/4" . If the opening jamb depth is greater, nail furring strips to inside of blind stops. If open jamb is less than 3 1/4" , trim back the stool cap.
3. Completely clean opening and proceed with installation.
4. Check the prim sill for level. Compensate for out of level conditions by installing wood shims tightly against the outside edge of the stool cap.
5. IMPORTANT: If this is a flat sill installation, the sill extender or angle should be removed and discarded.

   a.) SILL EXPANDER: Measure the distance between the blind stops at the sill and cut the sill extender to fit. Return extender to proper position in the window.

   b.) SILL ANGLE: Install sill angle with long leg up, 1/8" back from inside edge of blind stop using three 1/2" screws provided. Caulk along entire length for weather tight seal.

6. Run a heavy bead of caulk along the inside of the blindstops at the jambs and head.
7. Fill the space under the head expander with insulation. Also lay insulation along sill of opening and staple in place.
8. Tilt window into opening. Center the window and push tightly against the blindstops
9. Square windows in opening by installing wood shims where necessary. Placing a carpenters square on the master frame and sill corners will aid in the process. On double hung windows, slightly opening the sashes will give a sight line, to help square the window. NOTE: For vinyl double hung windows, tilt in both sash and remove balance covers. Turn adjustment screws located in the side jambs clockwise until they are firmly seated against the opening. This will help ensure frame members remain parallel and plumb.
10. Complete fastening the unit by screwing frame to opening through prepunched holes at top and bottom on both sided of the master frame, using screws provided. DO NOT OVER TIGHTEN.
11. Insulate between window frame and rough opening on all sides. BE CAREFUL NOT TO OVERPACK AND BOW JAMBS.
12. Verify window is plumb, level and square. Check operation of unit and make necessary adjustments.
13. If you used the head expander, tap it up to the head and fasten with self tapping screws provided or use white pop rivets.
14. If you used the sill expander , tap it down and caulk along entire length.
15. Replace wood interior trim.