MAPIDo Room-Darkening Curtains Block All Light?
IKEA describes its MAJGULL room-darkening fabric as admitting a small amount of light while darkening a room and reducing screen glare. The answer applies to this fabric classification, not a promise about all curtain products.
No. IKEA says its MAJGULL room-darkening fabric lets in a small amount of daylight, so room darkening is not the same as blocking every bit of light.
no
The answer
No. IKEA says its MAJGULL room-darkening fabric lets in a small amount of daylight, so room darkening is not the same as blocking every bit of light.
Why
IKEA describes its MAJGULL room-darkening fabric as admitting a small amount of light while darkening a room and reducing screen glare. The answer applies to this fabric classification, not a promise about all curtain products.
When it is usually OK
- Expect most daylight to be reduced with the cited room-darkening fabric.
- Use it when dimming rather than total light exclusion is your goal.
When you should not
- Do not read room-darkening as a guarantee of complete darkness.
- Do not claim that an individual product blocks all light without its own specification.
Risks and exceptions
- A room may still receive a small amount of daylight through the fabric.
Best practice
Check the exact curtain listing for room-darkening versus block-out wording before buying for a total-darkness requirement.
Alternatives
- Look for fabric explicitly sold as block-out when you need a stronger light-blocking specification.
- Use the named product’s light-transmission description instead of relying only on its color.
Frequently asked questions
Does MAJGULL let any light through?
Yes. IKEA says the fabric lets in a small amount of daylight.
Are room-darkening and block-out identical descriptions?
No. IKEA lists them as different curtain functions.
Will a dark color guarantee total darkness?
The evidence here supports the product’s stated room-darkening function, not a universal guarantee based on color.
Sources
Written by Mapiance Editorial Team
The Mapiance Editorial Team researches, writes, reviews, and maintains practical guides and explainers for MAPIANCE.
Reviewed by Mapiance Editorial Team
Published Sep 25, 2026 · Updated Sep 29, 2026 · Verified Sep 21, 2026