When you are shopping for new window treatments, it is easy to assume that “room darkening” and “blackout” mean the same thing. They do not. Understanding the difference helps you choose the right curtains for better sleep, extra privacy, or simply a cozier room.
What Are Blackout Curtains?
Blackout curtains are designed to block as much light as possible, usually 95–100% when properly installed. They use tightly woven fabrics and special linings that stop sunlight from shining through the material, creating a near–pitch-black environment.
Because they block so much light, blackout curtains are ideal for:
- Bedrooms and nurseries where you want daytime naps and deep nighttime sleep.
- Media or TV rooms where you want to eliminate glare on screens.
- Light-sensitive sleepers or anyone who works night shifts and sleeps during the day.
Beyond darkness, blackout curtains also help insulate windows, reduce outside noise, and protect furniture and floors from fading by blocking UV rays.
What Are Room Darkening Curtains?
Room darkening curtains significantly reduce light, but they do not create total darkness. They typically block about 70–90% of incoming light, depending on the fabric and color, so you’ll still see a soft glow around or through the panels.
Room darkening curtains are a great fit when you want:
- A darker, more comfortable space without complete blackness—such as living rooms, home offices, or kids’ rooms.
- Some natural light in the morning while still cutting glare and harsh midday sun.
- Similar privacy, noise reduction, and some energy savings, often at a lower price point than full blackout options.
Think of room darkening curtains as “dim the lights,” while blackout curtains are “lights off.”
Key Differences: Room Darkening vs. Blackout
Although they look similar on the rod, room darkening and blackout curtains are built differently and perform differently.
- Light control:
- Blackout: Blocks 95–100% of light for near-total darkness.
- Room darkening: Blocks about 70–90% of light, leaving a gentle glow in the room.
- Fabric & lining:
- Blackout: Uses a dense, often multi-layered or coated lining specifically engineered to stop light.
- Room darkening: Uses a slightly lighter liner or thicker fabrics that filter most, but not all, light.
- Privacy & comfort:
- Both provide strong privacy, but blackout curtains offer complete coverage so silhouettes and light inside the room are not visible from outside.
- Room darkening still delivers excellent privacy with a softer, less intense look and feel.
- Energy efficiency:
- Blackout: Offers the strongest insulation, helping keep rooms cooler in summer and warmer in winter.
- Room darkening: Adds noticeable insulation and comfort, but typically not as much as true blackout panels.
How to Choose the Right Option for Your Space
Start with how you use the room and how sensitive you are to light.
Choose blackout curtains if you:
- Need a very dark room for sleeping, day or night.
- Are setting up a nursery or media room where light control is critical.
- Want maximum privacy, energy efficiency, and the least glare possible.
Choose room darkening curtains if you:
- Prefer a dim, cozy space but don’t want complete darkness.
- Are updating living rooms, dining rooms, or offices that benefit from softened natural light.
- Want many of the same privacy and comfort benefits, often with a slightly lighter look and feel.
At SteinMart.com, understanding this difference makes it easier to shop confidently. Look for “blackout” in the product details when you want near-total darkness, and “room darkening” when you’re aiming for a softer, darkened glow that still lets a bit of light in.
