Knowledge Hub
Fabric guide · Roller shades

One roller shade.
Three ways to shape the light.

Light Filtering, Blackout, and Solar Screen fabrics may look similar on the window, but they work very differently. Choose the right balance of daylight, privacy, and view for every room.

01 · Three fabric families02 · Day & night privacy03 · Solar openness explained
01 / The essentials

Meet the three fabric families.

The fabric determines what passes through the shade, what remains visible, and how a room feels throughout the day. Start with the experience you want, then choose your color and texture.

Light Filtering

Soft daylight with an obscured view and everyday privacy.

Blackout

Opaque fabric for maximum light blocking and privacy.

Solar Screen

An open weave for glare control while preserving a view.

Light-filtering roller shade gently diffusing sunlight in a living room
Weave detail

Close-up of light-filtering roller shade fabric texture

01 / LIGHT FILTERING

Daylight, softened.

Light Filtering roller shades gently diffuse incoming sunlight, reducing harsh brightness without making the room feel closed off. They create a warm, comfortable glow while obscuring a direct view through the window.

Light
Soft, diffused natural daylight.
Privacy
Good daytime privacy; silhouettes may be visible at night.
Best for
Living rooms, kitchens, dining rooms, and shared spaces.

Good to know: Lighter colors and thinner weaves can reveal silhouettes when indoor lights are on after dark. Light Filtering does not mean blackout.

Blackout roller shade covering a bedroom window
Fabric detail

Close-up of opaque blackout roller shade fabric

02 / BLACKOUT

A room made calmer.

Blackout fabric is made to block nearly all light passing through the material. It also prevents a view through the fabric, making it a strong choice when daytime sleep, screen viewing, or privacy is the priority.

Light
Blocks nearly all light through the fabric.
Privacy
Excellent privacy through the fabric, day and night.
Best for
Bedrooms, nurseries, media rooms, and hospitality spaces.

Important: Blackout fabric alone does not guarantee a completely dark room. Light can enter around the sides or top; overlapping mounts and optional side channels can help reduce gaps.

Solar screen roller shade with a visible city view
Open weave

Close-up of the open weave of a solar screen fabric

03 / SOLAR SCREEN

Keep the view. Tame the sun.

Also called Sunscreen or Solar Shades, screen fabrics have a precisely woven pattern of small openings. They reduce glare and help manage solar exposure while letting you enjoy an outward view in daylight.

Light
Varies with fabric color and openness percentage.
Privacy
Some daytime privacy; low nighttime privacy with interior lights on.
Best for
View windows, offices, sunrooms, and commercial spaces.

Remember: Solar Screen is not a nighttime privacy fabric. After dark, illuminated interiors can be visible from outside. Consider layering if privacy is essential.

02 / A change in perspective

What changes after sunset?

Daytime appearance is only half the story. Once the lights turn on indoors, the brighter side of the glass changes — and so can your privacy. Compare the same fabric under both conditions.

Light Filtering

Soft glow / Partial nighttime privacy
Light-filtering roller shade in daytime, seen from inside
Day / From inside

Soft, even daylight. The outdoor scene is obscured, with comfortable daytime privacy.

Light-filtering roller shade at night, seen from outside, with indoor light glowing through the fabric
Night / From outside

With the lights on indoors, the shade glows warmly from the street. General shapes and silhouettes are partly visible through lighter weaves — softer than a bare window, but not full privacy.

Blackout

Opaque / High privacy
Blackout roller shade in a darkened bedroom in daytime, seen from inside, with daylight leaking along the side edges
Day / From inside

Light does not pass through the opaque fabric itself. But a roller shade's fabric is deducted narrower than the window, so daylight still seeps in along both sides where the fabric ends.

Blackout roller shade with side channels fitted along both sides of the window, in a darkened bedroom
Day / With side channels

For the darkest possible room, add side channels. The fabric's edges ride inside tracks along both sides of the window, so the daylight that normally seeps in at the edges is captured and the room sits noticeably darker. A thin line of light can still show at the top and bottom rail.

Solar Screen (3% example)

Daytime view / Nighttime exposure
Three-percent solar screen roller shade seen from inside in daytime, with trees and houses still visible through the fabric
Day / From inside

An outward view remains available with reduced glare. Visibility from outside is typically limited in bright daylight.

Solar screen roller shade seen from outside at night, with the lit kitchen and dining room visible through the fabric
Night / From outside

After dark the effect reverses. With the interior lights on, the open weave shows the room to anyone standing outside — furniture, lamps and movement read straight through the shade. Solar Screen is a daytime fabric; for evening privacy, layer it with a Light Filtering or Blackout shade.

03 / The solar screen guide

A small percentage makes a big difference.

Solar Screen openness describes approximately how much of the fabric is open space between yarns. Lower percentages mean a tighter weave; higher percentages let more of the view and daylight pass through.

Lower openness
More screening and daytime privacy

Higher openness
Clearer view and more daylight

The same living room seen through a one-percent openness solar screen, the tightest weave of the four
1%Most screening

Maximum screening, minimal view

Very small openings give stronger glare and solar screening with higher daytime privacy, but a more restricted view. A good starting point for very sunny exposures.

The same living room seen through a three-percent openness solar screen, slightly clearer than one percent
3%Balanced choice

Strong screening, usable view

A popular middle ground: good glare control, helpful daytime privacy, and an outside view that is clearer than with 1% openness.

The same living room seen through a five-percent openness solar screen, with trees and the patio clearly readable
5%More daylight

A comfortable everyday view

Brings in more natural light and opens up the view, with moderate sun screening and more limited daytime privacy. Often suited to homes and offices.

The same living room seen through a ten-percent openness solar screen, with the garden and sky almost fully open
10%Most open view

The view takes priority

Larger openings allow more daylight and the clearest view, with less glare control and daytime privacy than tighter solar screens.

Openness is not a UV-blocking percentage. Actual UV reduction, glare, and heat performance depend on the specific fabric construction, color, glazing, and installation. Check each fabric's technical specifications rather than calculating UV protection from openness alone.

04 / Compare at a glance

The right fabric for the right purpose.

Think about how you want the window to work, not just how the material looks. This chart summarizes the typical trade-offs between the three families.

FeatureLight FilteringBlackoutSolar Screen
Light controlSoft, diffused daylightBlocks nearly all light through fabricVaries by openness, color, and construction
Outside viewGenerally obscuredNot visibleVisible; clearer with higher openness
Daytime privacyGoodExcellent through the fabricVariable; generally stronger with lower openness
Nighttime privacySilhouettes may show with lights onExcellent through the fabricLimited when indoor lights are on
Glare controlSoftens harsh daylightStrong light blockingDesigned to reduce glare; varies by openness
Heat / UV reductionVaries; often moderateCan be substantial; depends on system and windowDesigned to manage solar heat and UV; check fabric ratings
Best applicationsLiving rooms, kitchens, dining areasBedrooms, nurseries, media roomsView windows, offices, commercial spaces

General guidance only. Actual results vary by fabric, window orientation, ambient lighting, and installation details. Privacy descriptions refer to looking through the shade material, not gaps around it.

05 / Simple decision guide

Start with your priority.

If you're unsure which sample to pull first, let the room's most important need lead the selection.

For soft, bright spaces

Choose Light Filtering.

When you want daylight to feel gentle, while obscuring a direct view from outside during the day.

For rest and darkness

Choose Blackout.

When you want the strongest light-blocking fabric. Discuss mounting gaps if deep darkness is important.

For sunny rooms with views

Choose Solar Screen.

When reducing glare without losing your daytime view matters most. Plan separately for nighttime privacy.

06 / Common questions

A few things worth knowing.

From the CWF Knowledge Hub

The best choice is the fabric that works for your room.

Compare actual swatches under your room’s lighting, review openness and performance data, and discuss mounting details with your CWF dealer or our team.