How to Mount Top-Down Bottom-Up Shades

One of the more versatile products for windows today is the top-down, bottom-up shade.

Inside Mount

It offers privacy, yet allows you to regulate light from the top and bottom because it raises and lowers the opposing ends independently of each other. Most of the "TDBU" shades found on the market are cellular shades. Custom-made Roman shades can be styled this way too. TDBU shades require two sets of lift cords, one on the left and one on the right. Cordless styles are also available. Whichever shade you have, installation will be similar. Your shade will mount either inside the window casing or outside of it.

Mark 2 1/2 inches in from window casing on each side at top of window. Position brackets at marks.

Screw the brackets in place using a 1/4-inch hex head bit in a drill or cordless screwdriver.

Slide head rail of shade into bracket from front to back until it clicks in place.

Place small holding brackets on each side of window casing at the bottom, if these came with your shade. These brackets will keep the bottom of shade from moving. A gentle tug on the bottom of shade will disengage and allow the shade to move up.

If your shade has cord lifts, the one on the right generally lifts the the bottom of the shade up. The left cord moves the shade from top to bottom. Cordless types work by pushing and pulling the top or bottom rails.

Outside Mount

Hold the head rail and shade assembly up to the opening of your window. It should span the opening with an inch or so to spare. Mark 2 1/2 inches inward from the ends of head rail. Place the outside mount brackets at these marks.

Screw the brackets in place using a 1/4-inch hex head bit in drill or cordless screwdriver.

Snap headrail into place.

Attach lower brackets to the molding at the window stool if your hardware comes with them. They will stabilize the bottom of shade and must be disengaged to raise the shade up from the bottom.

If your shade has cord lifts, the one on the right generally lifts the the bottom of the shade up. The left cord moves the shade from top to bottom. Cordless types work by pushing and pulling the top or bottom rails.

Things You Will Need

  • TDBU shade
  • Measuring device
  • Marking pencil
  • Cordless screwdriver, drill with 1/4-inch hex head or screwdriver
  • Mounting hardware

Tip

  • These are general directions for installing top down, bottom up shades. Refer to manufacturer's instructions for specific directions for your shade.

Warning

  • Cellular shades require window casings with at least a 1 1/8 inch depth for an inside mount.

About the Author

Debra Taylor is a freelance writer whose career experience includes owning an interior design business and a retail frame shop. She also taught elementary school and middle school language arts and has a Bachelor of Arts degree in early childhood and elementary education from Lander University. She continues to be involved with children in an after school program.