Interior design principles · Northern Virginia

How to Choose Window Treatments and Drapery

Window treatments are one of the most under-budgeted, over-simplified decisions in a home project. Clients often treat them as the last purchase, the thing you add when everything else is in place. In practice, getting the drapery wrong can flatten a room that everything else got right. And getting it right, in fabric, scale, and hanging height, is one of the least expensive ways to make a room feel finished and elevated.

After 30 years of designing Northern Virginia homes, our team has strong opinions on window treatments. Not because there’s one right answer. Because most of the guidance available online is based on trends rather than principles, and principles don’t change year to year the way trends do.

Start with function, then form

Light control and privacy are not the same thing, and it’s worth keeping them separate in your thinking. A sheer panel provides privacy from street-level eyes during the day while letting in full ambient light. A blackout lining blocks light but doesn’t provide any more privacy than a room-darkening shade. A layered approach, sheer closest to the glass and a heavier panel on top, handles both independently and gives you control over each.

In Northern Virginia homes, we see a few consistent patterns. South and west-facing windows in great rooms need real light control: the afternoon sun in summer is intense, and without a shade or lining, the furniture, flooring, and artwork will fade faster than you’d expect. East-facing bedroom windows need blackout capacity for anyone sleeping past 6 a.m. in spring and summer. North-facing windows often need nothing more than a soft panel to soften the cold light and frame the glass architecturally.

The single biggest mistake: hanging too low

This is the rule we enforce on every project, without exception. When drapery mounts at the window frame, it caps the visual height of the room at the top of the frame. When it mounts at or near the ceiling, the eye follows the panel all the way up and the room reads as taller. It’s a perceptual trick with real, dramatic impact.

The rod or track goes as close to the ceiling or crown molding as possible. For a standard 9-foot ceiling, that’s typically 1 to 3 inches below the crown. For a vaulted or coffered ceiling, the rod tracks the architectural line rather than fighting it. The panels themselves should graze the floor or break slightly: 1/2 inch off the floor is a clean, tailored look. A 1-inch puddle is softer and more romantic. More than that becomes a practical problem.

Width is the other proportion rule. Panels should extend 12 to 18 inches beyond the window frame on each side when open, so that when they’re drawn back they don’t block any glass. A window that looks narrow because the panels eat into the glass is almost always the result of mounting too narrow. Wide, high, and long is the formula for drapery that reads as intentional.

Fabric: the choice that sets the register

The fabric you choose does two things: it sets the visual weight of the treatment and it communicates the room’s register, how formal or relaxed the space is meant to feel. A heavy velvet panel in a deep navy makes a statement. A soft ivory linen panel recedes and lets the architecture breathe. Neither is wrong. But the choice should be intentional.

In our work, we rely heavily on linen and linen-blends for several reasons. They’re available at many price points. They take dye beautifully and hold color over time. They have enough body to hang well without being stiff or theatrical. And they work in almost every room type, from a casual family room to a formal dining room, depending on color and hardware selection.

For bedrooms, especially primary bedrooms, we almost always layer: a sheer or linen panel closest to the glass for softness during the day, and a heavier blackout-lined panel in front for night. The two panels run on the same rod or a double track. When both are open, the room fills with ambient light. When the blackout panels are closed, the room is genuinely dark.

Hardware: more visible than you think

Most people treat the rod as an afterthought because it’s partially hidden behind the panel. But the finials, the rings, and the exposed rod section above the panel are visible and they communicate finish. A polished nickel rod in a room built around brushed brass reads as an accident, not a choice. A matte black rod in a room with mixed metals can be a confident punctuation mark or an awkward outlier, depending on whether black metal appears anywhere else in the space.

We typically specify rods in the dominant metal of the room. If the room hasn’t been designed yet, this is one reason to decide on a metal palette early. The hardware decision is not made in isolation. It connects to cabinet pulls, plumbing fixtures, lighting, and furniture legs. Getting all of those onto a coherent plan before anything is purchased is part of what our full-service design process does.

Shades, sheers, and panels: knowing which to combine

• Sheer panel only. Suitable for a formal living room facing a private garden, where the view is worth preserving and privacy is not a concern. Softens the window without blocking light or view.
• Shade plus stationary panels. The most common and most practical combination. The shade handles light control and privacy; the panels are purely decorative, framing the window and adding fabric softness. This works in living rooms, dining rooms, and family rooms.
• Double panel: sheer plus blackout. Best for bedrooms. Gives full control: ambient diffused light with the sheer, complete darkness with the blackout panel. Run both on a double rod or ceiling track.
• Roman shade alone. Clean, architectural, and appropriate for rooms where you want the treatment to read as part of the millwork rather than as soft furnishing. Works well in a library, a study, or a kitchen with limited wall space beside the window.
• Floor-to-ceiling panel, no shade. The most dramatic and the most commitment. Works beautifully in a room with a strong architectural backdrop, tall ceilings, and enough floor space for the panel to not feel cramped when open.