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PleaseSleep

Blackout curtains

Block outside light for a darker room.

True blackout is harder to achieve than the label suggests. Most curtains sold as blackout only darken a room; light still leaks around the edges, over the top, and along the sides where the panel meets the wall. The fabric blocks light, but the gaps decide how dark the room actually gets.

For shift workers, light sleepers and nurseries, the fix is as much about fit and mounting as fabric. A panel mounted close to the wall, wider and taller than the window, with a wraparound rod or ceiling track, beats a thicker fabric hung loosely.

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How to choose blackout curtains that actually block light

Mount wide and high

Hang the rod well beyond the window on both sides and above the frame, and overlap the panels at the center. The gaps leak more light than the fabric ever will.

Look for layered fabric

Triple-weave or foam-backed panels block more light than a single thick layer, and they muffle outside noise and hold heat better too.

Seal the side channels

For near-total darkness, consider wraparound rods, ceiling tracks or side channels that close the edges against the wall.

Weigh heat and noise

Heavier blackout panels also cut summer heat gain and soften street noise, a real bonus for a bedroom on a busy road.

Frequently asked questions

Do blackout curtains block all light?

The fabric does, but light leaks around the edges. Real darkness depends on mounting the panel wider and taller than the window and sealing the sides.

Are blackout curtains worth it for sleep?

For anyone sensitive to early light or streetlights, a dark room supports melatonin and later waking. They also help shift workers sleep during the day.