What Is a Bed Skirt? | Definition, Styles & How to Install

A bed skirt is a decorative fabric panel that fits between a mattress and box spring, draping to the floor to hide the bed frame and under-bed storage.

Also called a dust ruffle in North America or a valance sheet in the UK, a bed skirt serves a simple purpose: it covers the space under your bed. Whether you want to hide storage bins, keep dust from gathering, or just give your bed a finished look, the bed skirt is the solution. These fabric panels come in standard bed sizes and drop lengths, with several styles that change how they install and how they look. If you are wondering whether you need one or how to choose and install one, this guide covers what matters.

What Does a Bed Skirt Do?

A bed skirt’s main job is cosmetic — it hides the box spring, bed frame supports, and anything stored underneath. It also helps keep dust and allergens from settling under the bed by limiting airflow into the gap. Beyond that, it is purely a style choice. Many beds work fine without one, especially platform beds or those with built-in storage drawers, where the skirt would block access.

The drop length is the distance from the top of the box spring to the floor. Common drop sizes are 14, 15, 18, 21, and 24 inches. Measure from the top of your box spring straight down to the floor, subtract about an inch, and pick the closest standard size.

Styles of Bed Skirts

Bed skirts vary by how they attach and how the fabric hangs. The four main styles each have a different installation method and look.

• Traditional (pleated): Three separate panels with pleats or gathers. You must lift the mattress to slide them between the mattress and box spring. Best for standard bed frames.
• Wrap-around (split-corner): One-piece fabric that wraps around the box spring without removing the mattress. The corners are split so it fits over the legs. Ideal for platform beds or heavy mattresses.
• Detachable: The skirt portion zips or snaps off the deck piece. The deck stays under the mattress permanently, so the skirt can be removed for washing without lifting the mattress.
• Tailored: Flat fabric with no gathers or pleats — a clean, modern look. Installs the same way as a traditional skirt but hangs straight.

The deck (also called the platform) is the flat fabric piece lying between the mattress and box spring. Traditional skirts usually have a full deck; wrap-around styles have minimal decking to allow quick installation. For readers ready to buy, our roundup of the best bed skirts on the market breaks down the top picks by style and budget.

How to Install a Bed Skirt

Installation depends on the style, but the process is straightforward. For a traditional skirt, remove the mattress, lay the three panels on the box spring aligning the corners, adjust the drop so the bottom sits 0.5 to 1 inch above the floor, and secure with twist pins pushed into the soft fabric of the box spring. Replace the mattress. Houzz’s guide to bed skirts covers visual examples of each method.

Common Mistakes to Avoid

• Wrong drop measurement: Measuring from the floor to the bottom of the box spring without accounting for the mattress thickness or frame height. Measure with the mattress in place if possible.
• Attaching pins to the wood frame: Twist pins must go into the fabric of the box spring, not the wood edge. Pins in wood pull out and scratch the frame.
• Ignoring bed type: A traditional skirt with a full deck does not work on an adjustable bed base. Use a wrap-around or detachable style instead.
• Confusing valance types: A traditional valance sits on top of the mattress (the decorative strip along the foot of the bed). What is called a valance in the UK is the bed skirt itself. Make sure you are shopping for the right item.