Choosing between sheer and blockout curtains comes down to what you need each room to do. Sheer curtains soften daylight and keep a space feeling light and open, while blockout curtains shut out light for better sleep, privacy and warmth. For a lot of homes the best answer is actually both, layered on the same window. Below we compare the two on light, privacy, warmth and style, and show you when each one makes sense.
At a Glance: Sheer vs Blockout Curtains
One of the most common curtain questions we hear in Solomons showrooms is whether you really have to pick between the two at all. The short answer is that they do different jobs, so the right choice depends on the room and how you live in it. Here’s how they stack up before we get into the detail.
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Sheer Curtains
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Blockout Curtains
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Light control
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Softens and diffuses daylight
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Blocks most or all light
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Daytime privacy
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Good, obscures the view in
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Full
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Night-time privacy
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Limited
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Full
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Warmth and insulation
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Minimal
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Strong
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Look and feel
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Light, airy, soft
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Substantial, cosy, structured
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Best for
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Living areas and daytime spaces
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Bedrooms, media rooms, sun-facing rooms
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Curtains are part of the Sultan’s Blinds range sold through Solomons, and you can browse the full curtains range to see both styles in different fabrics.
What Are Sheer Curtains?
Sheer curtains are lightweight, semi-transparent panels that filter daylight rather than block it. The loose, open weave lets natural light through while softening it, so a room feels bright without the harsh glare of bare glass. They also give you a degree of daytime privacy, obscuring the view in, while you can still see out.
What sheers don’t do is darken a room or give you privacy after dark, when interior lights make the fabric easy to see through. That’s why they’re often chosen for the light and the look first, and paired with something heavier for the times you need more cover. You can see the options in the sheer curtains range.
What Are Blockout Curtains?
Blockout curtains are made from a dense, tightly woven fabric, often with a coated backing, designed to stop light passing through. Drawn closed, they darken a room substantially, give you full privacy day and night, and add a layer of insulation against heat and cold. They’re the practical choice wherever light, privacy or temperature really matter.
The trade-off is that blockout fabric is heavier and more enclosing, and a room with only blockout curtains can feel dark and a little closed-in during the day. For that reason many people use them where the function counts most, like bedrooms, rather than as the only window treatment in a light-filled living space. The blockout curtains range covers a wide spread of colours and weights.
Sheer vs Blockout: How They Compare
Light Control
This is the clearest difference between the two. Sheer curtains diffuse daylight, keeping a room bright while taking the edge off direct sun and glare. Blockout curtains do the opposite, cutting light right down so you can darken a room in the middle of the day. If a space gets uncomfortable afternoon sun, blockout gives you control sheers can’t.
Privacy
Both offer privacy, but at different times. Sheers screen the view inside during daylight hours, which suits a living room where you want softness and some cover without losing the outlook. After dark that protection drops away, because interior lighting makes sheer fabric see-through from outside. Blockout curtains give full privacy around the clock, which is why they’re the standard choice for bedrooms and street-facing windows.
Warmth and Energy Efficiency
If keeping a room comfortable matters, blockout wins here. The dense weave and backing slow the movement of heat through the window, helping hold warmth in over winter and keep heat out on hot days, and they cut down draughts around the glass. Sheers are too light to do much insulating on their own. In the cooler months this difference is worth weighing up, especially for rooms you spend a lot of time in.
Look and Feel
Sheers read as light, airy and relaxed, and they soften a room’s edges in a way heavier fabric can’t. Blockout curtains feel more substantial and structured, and bring a sense of cosiness and finish to a space. Neither look is better, they just set a different mood, which is part of why so many homes end up wanting a bit of each.
Room Suitability
As a rough guide, sheers suit living rooms, dining spaces and anywhere you want daylight and a soft feel. Blockout suits bedrooms, nurseries, media rooms and any room with strong sun or a need for privacy. Rooms that have to do both jobs, a living room that’s also where the kids watch a movie, for instance, are exactly where layering earns its place.
When to Choose Sheer Curtains
Sheer curtains make sense when light and atmosphere are your priority. They’re a strong fit for:
- Living rooms and open-plan spaces, where you want to keep daylight and a sense of openness.
- Daytime spaces like studies and dining areas, where the room is mostly used while the sun’s up.
- Rooms where the view is worth keeping, since sheers screen without shutting the outlook out entirely.
- A base layer for layering, behind blockout curtains on a double track.
Just keep in mind that sheers on their own won’t darken a room or give you privacy at night, so they’re rarely the whole answer for a bedroom.
When to Choose Blockout Curtains
Blockout curtains are the practical pick when function comes first. They suit:
- Bedrooms, where darkness and full privacy help you sleep.
- Nurseries and kids’ rooms, for daytime naps and early-morning light.
- Media rooms, where glare on a screen is the enemy.
- West-facing and sun-exposed rooms, where afternoon heat and light need controlling.
- Energy-conscious homes, for the insulation a heavier fabric provides.
The thing to watch is that a room with blockout curtains alone can feel dark through the day. If you like natural light, that’s the case for pairing them with sheers rather than relying on blockout by itself.
The Both-And Approach: Layering Sheer and Blockout
For a lot of rooms, the honest answer to “sheer or blockout?” is “both”. More often than not, when a customer is weighing the two up for a living space, layering turns out to suit how they actually live.
Layering means running sheer curtains and blockout curtains on the same window, usually on a double track, so you can use either depending on the time of day. Pull the sheers across for soft, filtered light and daytime privacy, then draw the blockout layer for darkness, warmth and full privacy at night. You get the airy daytime look and the night-time control in one window, instead of compromising on either.
It’s the natural fit for the rooms that have to multitask, especially living areas and main bedrooms. The main thing to plan for is the hardware: layering needs a double track, so it’s worth deciding on it before your curtains are measured.
If you’d like to see how each fabric reads in your own light before you commit, our free Shop-at-Home service brings the samples to you, so you can hold them against your walls and windows rather than guessing from a showroom.
Final Thoughts
There’s no single winner between sheer and blockout curtains, because they’re built for different jobs. Sheers are for light, softness and a sense of space. Blockout is for darkness, privacy and warmth. Match the curtain to what the room needs, and for the rooms that need to do both, layering gives you the best of each on the one window.
If you’re still weighing it up, the easiest next step is to see the fabrics in your own home. Book a free in-home measure and quote, or find your local Solomons store to talk it through with the team.
Frequently Asked Questions
Blockout curtains block the great majority of light and darken a room significantly. A small amount can still creep in around the edges of the curtain or the track, so for total darkness it helps to fit them wider and longer than the window, or to pair them with a fitted blind.
Yes, layering both on the one window generally needs a double track, with the sheer layer at the back and the blockout in front. It's worth deciding to layer before measuring, so the right track can be planned in from the start.
Not on their own. Sheers screen the view in during the day, but once your interior lights are on after dark the fabric becomes easy to see through from outside. For night privacy you'll want blockout curtains or a blind behind or alongside the sheers.
Blockout curtains are the better insulator. Their dense fabric and backing slow heat loss through the window and reduce draughts, which helps a room hold its warmth. Sheers are too light to make much difference to temperature on their own.
Sheers take the edge off direct glare and soften strong daylight while keeping the room bright. For serious afternoon heat in a sun-facing room, though, blockout curtains give you far more control, which is another reason layering suits rooms that cop both bright mornings and harsh afternoons.
