Blackout vs Cellular Blinds
Both blackout blinds and cellular honeycomb shades are sold as the bedroom answer. One is built for darkness, the other for insulation — and there is a version that does both. Here is how they compare.
Blackout blinds vs cellular shades
| Blackout blinds | Cellular (honeycomb) shades | |
|---|---|---|
| Darkness | Best — near-total with side channels | Good with blackout fabric, less edge sealing |
| Insulation | Good | Best available — sealed air cells |
| Noise dampening | Slight | Noticeably better |
| Look | Flat fabric panel | Soft pleated honeycomb |
| Light gaps | Sealed by U or L channels | Small side gaps remain |
| Top-down / bottom-up | No | Yes |
| From (installed) | $249 with side channels | $229 light filtering / $279 blackout |
| Best for | Sleep, nurseries, media rooms | Cold or noisy rooms, energy savings |
Starting installed prices for a 36" × 48" window including free measurement and installation.
Choose Blackout If
Darkness is the whole point
A blackout fabric blocks 100% of light through the material, but light still finds the edges. Adding U-channel or L-channel side seals plus a top cassette is what turns a dark-ish room into a properly dark one — the difference is obvious at 5 a.m. in June.
This is the setup we install for shift workers, nurseries, and media rooms where projector contrast matters.
- Side channels seal the edge light
- Cassette headbox stops light spill at the top
- Pairs well with motorization on a wake-up schedule
Choose Cellular If
The room is cold, hot, or noisy
Cellular shades trap air inside honeycomb cells, which slows heat moving through the glass in both directions. In a bedroom over a garage, in a basement suite, or beside a single-pane window, that comfort difference is felt immediately.
Cellular fabrics come in light filtering and blackout. The blackout version gives you most of the darkness of a blackout roller plus the insulation, which is why it's our usual pick for a cold bedroom.
- Double-cell for the coldest rooms
- Blackout cellular for darkness plus insulation
- Top-down/bottom-up for daylight with privacy
Our recommendation
If your only complaint is light, choose a blackout roller with side channels — it is the darkest and most cost-effective option. If the room is also cold, drafty, or noisy, choose blackout cellular shades and accept slightly more edge light for a meaningfully more comfortable room.
For a west-facing bedroom that both overheats and gets early light, we often install blackout cellular with side channels and a motor on a schedule, so the shade closes before the afternoon sun hits.
Keep Comparing
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Not sure which one is right for your windows?
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