Measure the Complete Door Opening
Measure the frame width and height.
Also measure the wall area available on both sides and the planned rod width. The curtain should cover the door when closed and move away from the active opening when open.
Record the direction in which the door slides.
Measure from the Rod to the Floor
Mark the intended rod position.
Measure 108 inches downward and compare the endpoint with the floor. Confirm whether the panel hovers, touches, or pools.
Floor clearance is important in high-traffic doorways.
Choose Sufficient Total Width
Wide patio doors require substantial combined panel width.
One 52-inch panel is unlikely to cover a large door with adequate fullness. Two 52- or 60-inch panels provide different total coverage.
Read the width and panel count carefully.
Decide Between One and Two Panels
One large panel can move toward the inactive side of a sliding door.
Two panels can open from the center or move independently. The best configuration depends on the handle, door direction, furniture, and available stacking space.
Test the daily walking path.
Plan Curtain Stacking
Extra-long blackout panels use significant space when opened.
Heavy folds can cover part of the glass or block the active doorway. Extend the rod beyond the frame when the wall allows, so the panels can stack farther outside the opening.
Check nearby switches and furniture.
Choose the Hanging Style
Rod-pocket panels provide a gathered appearance but may be harder to move frequently.
Grommets generally slide more easily. Back tabs look tailored but can also create resistance with heavy fabric.
Daily door access should guide the heading choice.
Check Rod Strength
A wide pair of 108-inch blackout panels can be heavy.
Use a strong rod, secure brackets, suitable wall anchors, and center support when required. Weak hardware can bend or loosen.
Follow the installation instructions.
Consider Light and Privacy
Sliding doors contain a large glass area.
Blackout curtains can provide stronger coverage when fully closed, but edge and center gaps still matter. Use enough width and inspect the closed arrangement during daylight and nighttime.
Door frames may require wider side coverage.
Consider Thermal Descriptions
Some 108-inch products are described as thermal insulated or energy efficient.
The practical effect depends on fabric construction, complete coverage, and the condition of the door. Curtains do not repair damaged door seals.
Review the exact product information.
Keep the Doorway Clear
Avoid heavy pooling near a frequently used door.
Fabric can collect dust and interfere with feet, pets, cleaning, and the sliding track. Select an endpoint that supports safe movement.
Check the curtain when wind enters through an open door.
Coordinate Color with a Large Surface
Extra-long curtains create a large color block.
Royal blue, dark green, olive, black, gray, and gold brown create strong visual framing. White, beige, oatmeal, and misty blue feel softer.
Consider the room size before choosing a very dark shade.
Cleaning and Storage
Long panels require substantial washing and drying space.
Follow the care label and avoid overloading household equipment. Store them clean and completely dry with broad folds.
Keep pairs labeled together.
Common Patio-Curtain Mistakes
Do not measure only the door glass and ignore the stacking wall space.
Avoid selecting rod-pocket curtains for a door used constantly without considering movement. Another mistake is allowing 108-inch panels to pool heavily over the sliding track.
Conclusion
One-hundred-eight-inch blackout curtains for patio and sliding doors require accurate frame, rod, floor, and stacking measurements. Choose enough width, practical panel count, suitable hanging style, strong hardware, and clear doorway access.
