Roller blind fabrics fall into four main types, ordered from the most light blocked to the most light let in: blockout, light-filtering or translucent, sunscreen, and sheer. The right choice depends on what the room needs to do: darken, give privacy, keep a view, or just look good. Most rooms are best served by combining two.
The mistake almost everyone makes is choosing fabric on look first and function second.
The fabric isn't really a colour decision. It's a light-and-privacy decision, and the two don't behave the same way.
A fabric that gives you total privacy during the day can leave you fully exposed at night, and a fabric that looks soft and elegant might do nothing to block the afternoon sun.
Every roller blind fabric sits somewhere on a single spectrum: how much light it blocks versus how much it lets through.
Picture a line with blockout at one end (no light, no view) and sheer at the other (lots of light, full view), with translucent and sunscreen in between.
Once you know where a fabric sits on that line, you know what it will and won't do.
Blockout roller blinds use a fabric that blocks light fully. It's the right choice when you want a room genuinely dark and completely private.
Bedrooms, nurseries, media rooms and night-shift sleepers are the obvious cases. It's the only fabric type that stops light passing through the fabric itself, which is why it's the standard for sleeping spaces.
Blockout does more than darken. Many blockout fabrics have a rubber or backing layer on the rear, and that backing reflects heat back out of the window, helping keep the room cooler in summer. That's a useful side benefit on west and north-facing windows that cop the sun.
When not to use it on its own: Blockout gives you no view out and no soft daytime light, so a room with only a blockout blind is either fully open or fully shut. That all-or-nothing problem is exactly why bedrooms are usually fitted with two blinds rather than one.
Light-filtering and translucent fabric softens and diffuses incoming light while giving you privacy as a silhouette. People outside see only a shadow or outline, not detail. In window-covering terms, "light-filtering," "translucent" and "transparent" are used more or less interchangeably for this same category.
This is the fabric for living spaces where you want gentle, glare-free daylight without putting the room on display.
Translucent is the privacy workhorse for daytime. Because outsiders see only a silhouette, it's genuinely private for things like getting changed during the day, while still letting in plenty of soft light. It also tends to come with texture and design options, so it adds warmth and interest to a room rather than looking purely functional.
When not to use it: Translucent diffuses your view out as well as the light coming in, so if keeping a clear view matters, a sunscreen will suit you better. And like all single fabrics, translucent alone won't darken a bedroom for sleep.
Sunscreen roller blinds use a woven fabric with tiny holes in the weave that you can see through, so you keep a clear view out while cutting glare, heat and UV.
It's the fabric for rooms where the view is the point: a lounge facing the garden, a sunroom, a window over the kitchen sink looking onto the backyard. Sunscreen is rated by openness percentage, which tells you how open the weave is.
A lower openness percentage means smaller holes, so you see less through it and get more privacy and sun protection. A higher percentage means a clearer view and more light and heat coming through. There's a genuine trade-off: the clearer your view, the less protection and privacy you get.
Sheer roller blinds use the most see-through fabric of the four: soft, light and chosen mainly for looks. It lets in the most light and offers the least privacy and sun control, so its job is decorative. It adds softness and a relaxed, airy feel to a room rather than solving a light or privacy problem.
When not to use it: Sheer won't darken a room, won't give reliable privacy, and won't do much against strong direct sun. If you love the sheer look but still need real light control or privacy, layer it with something that does that job.
Blockout: no light, no view, full privacy day and night. Best for bedrooms, nurseries and media rooms.
Light-filtering / translucent: soft diffused light, silhouette privacy during the day, limited at night. Best for living areas and dining rooms.
Sunscreen: clear view, cuts glare and heat, no privacy at night. Best for lounges and sunrooms.
Sheer: most light, least privacy, mainly decorative. Best for styling layers.
For rooms that need both a daytime view and night-time darkness (bedrooms especially), the best answer is usually a double roller blind: two blinds on one bracket, a sunscreen for the day and a blockout for the night.
It solves the all-or-nothing limit of a single fabric, because no one roller fabric can both preserve a view and black a room out. Each fabric is excellent at its job and useless at the other one, so putting both on one bracket lets the window do whatever you need at the moment.
Beyond light and privacy, the conditions in a room should shape your fabric choice.
Kitchens and bathrooms are where it matters most. In a kitchen, an easy-wipe fabric wins: a flat painted blockout is the easiest to clean, or a flat, minimally textured translucent if you want filtered light.
Avoid heavily textured fabrics and standard sunscreen near cooking, because grease and oil get trapped in the texture and the weave.
Bathrooms call for the same easy-clean thinking, plus a hardware consideration: in humid, wet areas a rust-resistant chain matters (stainless steel, plastic or nylon).
How a roller blind is fitted affects how much light sneaks in around the edges, which matters most with blockout in bedrooms.
A reveal fit (inside the recess) looks neat but always leaves small side gaps; a face fit (on the wall over the opening) covers those edges far better when maximum darkness is the goal.
Roller blind fabrics run from blockout (no light, full privacy) through translucent (soft light, daytime privacy as a silhouette) and sunscreen (clear view, rated by openness, but no privacy at night) to sheer (most see-through, mainly decorative).
Choose by what the room needs to do, not just how the fabric looks.
Sunscreen's night-time exposure and a kitchen's cleaning demands are the two things people most often get wrong. For rooms that need both a view and darkness, a double roller blind is usually the best answer.
Blockout blocks light entirely and gives total privacy day and night, making it the choice for bedrooms.
Translucent softens and diffuses light and gives daytime privacy as a silhouette, while still letting light through.
Blockout darkens a room; translucent keeps it bright but private during the day.
It depends on the fabric. Blockout and translucent keep you private after dark (translucent shows only a silhouette), but sunscreen offers no privacy at night.
Once your lights are on and it's dark outside, people can see straight through the weave.
For night privacy with a sunscreen, pair it with a blockout in a double roller blind.
A double roller blind: a sunscreen for daytime view and sun control, plus a blockout for night-time darkness and privacy.
A single blockout works if you only ever want the room dark or fully open, but the double setup gives you both a view and total darkness on the same window.
Openness percentage tells you how open the weave is.
A lower percentage (e.g. 5%) means smaller holes, so you see through less and get more privacy and sun protection.
A higher percentage (e.g. 10%) means larger holes, a clearer view, and more light and heat let through.
An easy-wipe fabric, because kitchens deal with grease and grime.
A painted blockout is the easiest to clean, or a flat, low-texture translucent if you want filtered light. Avoid standard sunscreen near cooking, as oil clogs the weave.
If you want sunscreen there, choose a near-zero openness.
Blockout fabric with a rubber or blackout backing blocks the most heat, because the backing reflects heat back out through the window as well as blocking light.
Sunscreen also cuts heat and UV while keeping your view, which makes it a good choice for sunny rooms where you don't want to lose the outlook.
The fastest way to choose the right fabric for every room is to have someone see the rooms. Book a free quote and we'll match the fabric to your home, not the other way around.
