Blackout Blinds vs Curtains: Which Is Best?

Blocking out light is one of the most common reasons people come to us — whether it’s shift workers who sleep during the day, parents trying to keep a nursery dark for naps, or anyone who lives somewhere with strong streetlighting. The choice usually comes down to blackout blinds, blackout-lined curtains, or both. Here’s how they actually compare.

Light control

A well-fitted blackout roller blind, especially one fitted with side channels, gives the most complete light block of any single product because the fabric sits flat against the window with minimal gaps. Blackout-lined curtains block the vast majority of light through the fabric itself, but some light can still creep in around the edges and at the top, where the curtain meets the pole or track — unless they’re a generous width and hung close to the wall.

Warmth and insulation

Curtains have the edge here. A pair of full, floor-length curtains with a proper interlining trap a layer of air against the window, which noticeably reduces heat loss on cold nights and can take the edge off traffic noise too. Blinds sit closer to the glass and, while they do help, they don’t insulate a room in quite the same way.

Look and feel

This is largely down to taste and the room. Blinds give a clean, streamlined look that suits smaller windows, bay windows, or a more contemporary interior. Curtains add softness, warmth, and a sense of scale — particularly effective in a bedroom with high ceilings or a period property.

Cost

Blackout roller blinds are generally the more affordable of the two, since they use less fabric and a simpler mechanism. Blackout-lined curtains cost more because of the fabric quantity involved and the lining itself, but the difference narrows once you compare like-for-like fabric quality.

Can you have both?

Yes — and it’s a popular choice for bedrooms. Pairing a blackout roller blind underneath with curtains layered on top gives you near-total darkness when both are closed, the flexibility to use just the blind on a bright morning while keeping the room feeling “dressed”, and the insulation benefit of the curtains on top. It’s our most-recommended combination for anyone who’s serious about a completely dark room.

Our recommendation

For a nursery or a shift worker’s bedroom where total darkness matters most, we’d lean towards a blackout blind on its own, or blind-plus-curtain if budget allows — see our nursery and kids’ room window dressing guide for more on this. For a main bedroom where you want both light control and a finished, layered look, blackout-lined curtains — with or without a blind behind them — tend to be the better fit. See our guide to layering blinds and curtains for how to combine them well.