
Chicology Cordless Blackout Roller Shade: best overall blackout shade
The Chicology roller shade earns its top position through the combination of accurate custom sizing and 100 percent blackout fabric. The 0.5-inch size increment allows ordering to exact window measurements, which is the single biggest factor in how much light enters around the sides. The fabric itself contains no weave gaps: it is a solid blackout layer that stops all light transmission through the panel.
Check price on Amazon →The Chicology Cordless Roller Shade blocks 100 percent of light when fitted with proper side channels and is available in custom-width increments of 0.5 inches, ensuring a gap-free fit on virtually any window. The cordless lift mechanism is safer for homes with children and simpler to operate than corded alternatives.
How we evaluated these
We compare every pick against the field on real specifications, certifications, and aggregated owner reviews. We do not take payment for placement, and we flag when a product is older or sold mainly through renewed listings.
The shortlist
| Pick | Best for | Score | |
|---|---|---|---|
| Chicology Cordless Blackout Roller Shade: best overall blackout shade | Check price | ||
| Arlo Blinds Blackout Cellular Shade: best for insulation | Check price |
Each pick, examined

Chicology Cordless Blackout Roller Shade: best overall blackout shade
The Chicology roller shade earns its top position through the combination of accurate custom sizing and 100 percent blackout fabric. The 0.5-inch size increment allows ordering to exact window measurements, which is the single biggest factor in how much light enters around the sides. The fabric itself contains no weave gaps: it is a solid blackout layer that stops all light transmission through the panel.
Arlo Blinds Blackout Cellular Shade: best for insulation
The Arlo Blinds cellular shade provides the same 100 percent light blocking as the Chicology roller with the added benefit of cellular honeycomb insulation that meaningfully reduces heat transfer and outside noise compared to a single-layer roller. It is worth the extra cost for windows in extreme climates or rooms that face street noise.
Buying considerations
100 percent vs. room darkening
Room darkening shades block 70 to 85 percent of light. True blackout shades block 99 to 100 percent through the fabric. The difference is significant for anyone who needs total darkness for sleep.
Inside vs. outside mount
Inside mount looks cleaner. Outside mount is more forgiving on measurements and can cover gaps around older window frames more effectively. Both work for blackout when sized correctly.
Cordless vs. corded
Cordless shades are safer around children and easier to operate daily. Corded shades are cheaper but carry a known strangulation hazard. Cordless is strongly recommended for any bedroom or nursery.
Questions answered
The Chicology Cordless Blackout Roller Shade is the best blackout shade for most windows, offering custom sizing, 100 percent blackout fabric, and a cordless design at a competitive price.
Decide between inside-mount and outside-mount installation first. Inside-mount gives a cleaner look but requires precise measurement and can leave small side gaps. Outside-mount covers the window frame entirely and is more forgiving on measurements. Also check whether the shade is certified to 100 percent blackout or only room-darkening.
The fabric in 100 percent blackout roller shades does eliminate light through the shade material. However, light can still enter around the edges of the shade. For near-total blackout, order the shade slightly wider than the inside measurement when inside-mounting, or use an outside-mount bracket that extends 2 to 3 inches beyond the window frame on each side.
Basic cut-to-fit paper blackout shades start but provide partial light blocking. Quality cordless roller shades run to per window depending on size. Cellular honeycomb shades with total blackout cost to per window. Motorized blackout shades can reach or more per window.

