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The Drawbacks of Blackout Curtains

19 Nov 2023 0 Comments
The Drawbacks of Blackout Curtains

Blackout curtains are a popular choice for bedrooms and nurseries to block outside light and create an environment conducive for sleep. However, the extensive use of these light-blocking window treatments can have some unexpected negative effects on health, home ambiance, and safety.

As the owner of Dolcewe, an online retailer offering custom blackout curtains and other window treatments, I want to provide an in-depth look at the key disadvantages of blackout curtains to help shoppers make fully informed purchasing decisions.

Key Drawbacks of Using Blackout Curtains

Below is a summary of the major potential downsides covered in this article:

  • Disrupted circadian rhythms and melatonin production
  • Reduced vitamin D synthesis from sunlight
  • Mold and mildew growth in dark, humid environments
  • Gloomy, enclosed room ambiance
  • Safety hazards like cord strangulation risks for children
  • Alternatives like layered curtains and smart shades

Understanding these factors allows consumers to balance the benefits of light control with the possible unwanted effects of overusing blackout curtains.

Disrupting Your Circadian Rhythms

The circadian rhythm is the 24-hour physiological cycle that regulates the human sleep-wake timing and other important body functions. Exposure to natural light is the most influential factor for synchronizing your circadian clock. Blackout curtains block those vital light cues, leading to:

  • Delayed sleep phase: Staying up later as melatonin secretion is delayed
  • Daytime fatigue: Feeling drowsy, low energy from circadian misalignment
  • Insomnia symptoms: Difficulty falling or staying asleep at bedtime

Studies demonstrate that people with more daylight exposure during the day experience:

  • Earlier melatonin release in the evening
  • Faster sleep onset at night
  • More restorative deep sleep
  • Improved sleep quality and duration
  • Better daytime energy and alertness

While limiting light in the bedroom at night is recommended, excessive deprivation of natural light by overusing blackout curtains, especially during the day, can prevent you from aligning your circadian clock properly, resulting in disrupted sleep-wake cycles.

Blocking Vitamin D Synthesizing Sunlight

Vitamin D is a fat-soluble vitamin that plays essential roles in:

  • Bone metabolism
  • Immune function
  • Nervous system maintenance
  • Mood regulation

Unlike other vitamins, our bodies can synthesize vitamin D when our skin is exposed to UV radiation from sunlight. But blackout curtains are designed to block all incoming light, including these crucial UV rays. With limited sun exposure, we must rely only on our dietary intake and reserves for meeting vitamin D needs.

Potential Effects of Vitamin D Deficiency

Prolonged vitamin D deficiency, especially in winter months when sunlight levels are lower, can lead to:

  • Bone pain and weakness from calcium malabsorption
  • Impaired immunity with frequent colds and flu
  • Low mood and seasonal affective disorder
  • Fatigue, muscle weakness, general malaise
  • Childhood bone deformities like rickets

While taking oral vitamin D supplements can help, direct sunlight exposure provides benefits that cannot be fully replicated with pills alone. Ensuring some daily sunlight exposure even when using blackout curtains can optimize vitamin D status.

Mold and Mildew Growth Risks

blackout curtains impact on health and well-being

The enclosed, light-deprived conditions created by blackout curtains also raise concerns regarding mold and mildew growth, especially in rooms vulnerable to dampness and humidity.

Conditions Promoting Mold/Mildew Growth

  • Darkness
  • Poor airflow
  • Moisture
  • Humid environments
  • Stagnant air

Blackout curtains can provide all of these optimal mold-growing criteria. The fungi release spores and allergens that can worsen respiratory problems like asthma. Mold also ruins curtains and walls with stubborn staining.

Preventing Mold and Mildew

To deter mold growth when using blackout curtains:

  • Select moisture-wicking, breathable fabrics
  • Enable airflow behind curtains
  • Use dehumidifiers to control humidity
  • Clean curtains and windows regularly to inhibit growth

Routinely allowing fresh air and sunlight exposure, even for brief periods, inhibits mold growth by creating a less hospitable environment.

Impacting Room Ambiance and Aesthetics

While mild to moderate use of blackout curtains in bedrooms and media rooms is fine, excessive use to block light in living areas can negatively impact the visual appeal and ambiance of your home. Some consequences of relying too heavily on blackout curtains throughout your home include:

  • Living spaces feeling dark, confined, and uninviting
  • Loss of accent lighting from lamps, fixtures being ineffective
  • Dependence on artificial lighting day and night
  • Monotonous atmosphere lacking visual warmth
  • Kitchens feeling gloomy instead of bright and cheerful

If you want to moderately limit light in multi-use spaces, layered window treatments are ideal:

  • Blackout curtains to control brightness
  • Sheer or lightweight curtains for airy aesthetics
  • Blinds or shades for adjustable privacy and insulation

This allows you to reap the perks of blackout curtains while maintaining an appealing, functional ambiance in living rooms, kitchens, and workspaces.

Safety Hazards for Children

Installing blackout curtains in your baby's nursery or your toddler's bedroom? Take precautions to minimize safety risks:

Potential hazards:

  • Loose cords can wrap around and choke children
  • Impaired adult supervision and visibility
  • Tripping over dangling pull cords

Safety tips when using blackout curtains in kids' rooms:

  • Secure cords with cleats installed high and out of reach
  • Choose cordless blackout curtains when possible
  • Use layered curtains to reduce/eliminate dangling cords
  • Keep cribs away from blackout curtain cords
  • Supervise young children in rooms with corded curtains

Selecting cordless blackout curtains or combining blackout curtains behind more child-safe options allows you to control light while minimizing risks.

Healthier Alternatives for Light and Sleep

blackout curtains alternatives

Blackout curtains provide maximum light blocking, but healthier alternatives exist:

  • Layering curtains - blackout + sheer curtains
  • Smart shades - remote-controlled window tinting
  • Sleep masks - for eyes only light blocking
  • Dimming blinds - adjustable light control

Other sleep and health recommendations:

  • Ensure sunlight exposure during the morning/day
  • Sleep in completely dark bedrooms at night
  • Establish consistent sleep schedules
  • Exercise regularly for circadian alignment
  • Reduce evening screen time for better sleep

Layering window treatments allow customizable light control while permitting healthy sunlight exposure during the day. Smart tech like dimmable smart blinds also let you automate and adjust your lighting needs. By supplementing blackout curtains with these alternatives, you can enjoy the perks of light reduction at night while avoiding overuse.

Light Control for Every Preference

When it comes to managing light in your space, there are options to suit every preference. Whether you prefer a room filled with natural light or a more cozy and dimly lit environment, you can find the perfect solution. Here are a few more alternatives to consider:

  • Roman Shades: These fabric shades can be adjusted to control the amount of natural light entering the room. With a variety of styles and materials available, you can find a Roman shade that complements your decor.
  • Sheer Curtains: If you want to maintain a bright and airy atmosphere while still ensuring privacy, sheer curtains are an excellent choice. They allow ample natural light to enter the room while providing a soft and ethereal look.
  • Roller Blinds: Roller blinds are versatile window coverings that offer varying levels of light control. They can be easily adjusted to let in or block out light as desired.
  • Window Film: Window film is an innovative solution that allows you to control the amount of light entering your space. It comes in various patterns and opacity levels, making it a stylish and functional alternative to blackout curtains.

With these alternatives, you can customize the light control in your room according to your preferences and needs. Whether you want to create a bright and vibrant space or a cozy sanctuary, there is an option that can help you achieve the desired ambiance.

For custom window treatment recommendations tailored to your unique needs and home, contact the Dolcewe design team today for a free consultation. We offer a diverse range of blackout curtains, layered window treatments, and child-safe options to control light and promote healthy sleep.

The best part? All curtains are available in custom size, starting from $26.99. Shop our custom size curtains today.


What are the drawbacks of blackout curtains?

The drawbacks of blackout curtains include potential circadian rhythm disruption, higher cost compared to regular curtains, reduced natural light, fire hazards if not installed correctly, and the need to rely on electric lighting during the day.

How can blackout curtains impact health and well-being?

Blackout curtains can disrupt natural circadian rhythms, leading to sleep disturbances, mood imbalances, and potential vitamin D deficiency. The reduced airflow and increased humidity caused by blackout curtains can also create an environment conducive to mold and mildew growth.

Are there alternatives to blackout curtains?

Yes, there are alternatives to blackout curtains. Room darkening curtains, layering curtains, different curtain materials, and low-VOC options are some alternatives to consider.

How do blackout curtains contribute to sleep and energy efficiency?

Blackout curtains effectively block light, creating a dark and restful environment that promotes quality sleep. Their thermal insulation properties also contribute to energy efficiency by blocking out heat in the summer and retaining warmth in the winter.

How should blackout curtains be cleaned and maintained?

Blackout curtains should be regularly cleaned by vacuuming or using a microfiber cloth to remove surface debris. Some curtains are machine washable, but it's important to follow the manufacturer's instructions. Professional cleaning services may be necessary for certain curtain materials.

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