Blackout curtains do three jobs: darken a room for better sleep, insulate against heat and cold, and soften noise. But “blackout” is loosely used — many curtains only dim. We compared the most-searched options on actual light blocking, fabric quality, insulation and value.
Quick comparison
| Model | Light blocking | Fabric | Header | Best for |
|---|---|---|---|---|
| NightVeil Triple-Weave (top pick) | ~99% | Triple-weave polyester | Grommet | Most rooms |
| ThermaSoft Liner | ~95% | Brushed microfiber | Rod pocket | Insulation / quiet |
| BudgetDim Panel | ~85% | Single-layer | Grommet | Light dimming only |
The best blackout curtains, ranked
NightVeil Triple-Weave Blackout Curtains
- Blocks close to 99% of light
- Triple-weave feels like real fabric, not plastic
- Heavy drape stays put, dampens noise
- Needs a sturdy rod for the weight
The all-rounder for bedrooms, nurseries and shift workers — near-total darkness with a fabric that still looks good in daylight.
ThermaSoft Insulated Liner Curtains
- Brushed microfiber traps heat and cold
- Noticeably quieter room
- Soft, draping feel
- Blocks slightly less light than top pick
If energy bills and street noise matter as much as darkness, the thermal liner is the smarter trade — nearly as dark, warmer and quieter.
BudgetDim Single-Layer Panel
- Cheapest way to cut glare
- Light, easy to hang
- Dims rather than fully blacks out
- Thinner fabric
Good enough to kill TV glare and morning brightness, but don’t expect full darkness — it dims rather than blacks out.
How to choose blackout curtains
- Real blackout vs “room darkening”: Triple-weave or lined panels block ~99%; single-layer “room darkening” only dims.
- Size: Hang panels wider and taller than the window — overlap the frame to stop light leaking around the edges.
- Insulation: Heavier, brushed fabrics also cut heat loss and outside noise.
- Header type: Grommet tops slide easily; rod-pocket gives a tighter, more sealed look.
Frequently asked questions
Do blackout curtains block 100% of light?
The best triple-weave or lined curtains block around 99% through the fabric. The remaining light usually leaks around the edges — hang panels wider and taller than the window and overlap the frame to get as close to total darkness as possible.
Do blackout curtains help with heat and cold?
Yes. Heavier blackout fabrics, especially insulated or thermal-lined ones, slow heat transfer through the window, which can lower cooling and heating costs.
What’s the difference between blackout and room-darkening?
“Blackout” should block nearly all light; “room darkening” only dims it. Check the stated light-blocking percentage — single-layer room-darkening panels typically stop around 85%.