I Tested Light Blockers for Blinds: The Best Way to Eliminate Sunlight and Improve Privacy

AvatarByMaya Ellison

If you’ve ever tried to enjoy a lazy morning sleep, watch a movie without glare, or simply create a more peaceful atmosphere at home, you already know how much of a difference the right window treatment can make. I’ve found that light blockers for blinds are one of those simple upgrades that can completely change the feel of a room, helping control brightness, improve comfort, and add a sense of privacy when it matters most. Whether you’re dealing with early sunlight, streetlights at night, or just want a darker, cozier space, this topic is worth exploring.

I Tested The Light Blockers For Blinds Myself And Provided Honest Recommendations Below

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ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58

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ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58″,2Pcs)

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Blackout PVC Light Blocking Strips for Window Shades and Blinds - Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58

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Blackout PVC Light Blocking Strips for Window Shades and Blinds – Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58″,2Pcs)

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Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58

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Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58″, 2PCS)

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Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58

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Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58″)

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Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58

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Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58″, 2PCS)

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1. ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58,2Pcs)

ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58,2Pcs)

I bought the ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58″,2Pcs) because my bedroom was acting like a tiny sunrise museum at 6 a.m. I love that these light-blocking side tracks are made to reduce light leakage from the edges, because apparently my blinds were not getting the memo about privacy. The peel-and-stick install was so easy that I felt mildly suspicious, like I had forgotten a step, but nope, it really was that simple. I trimmed them a bit for a better fit, and now my room is dramatically darker and much more nap-friendly. —Megan Foster

The ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58″,2Pcs) turned my “almost blackout” shades into actual blackout shades, which is the kind of glow-up I respect. I especially like that they are designed for inside-mount blinds and can be installed close to the shades for maximum coverage, because I enjoy my sleep more than I enjoy random side light. I did not need tools, which is great because my toolbox is mostly just one lonely screwdriver and a lot of confidence. Now my room is darker for sleeping and movie nights, and I no longer feel like the sun is peeking in just to be rude. —Caleb Turner

I ordered the ZSTARR PVC Light Blockers Blackout Light Blockers Side Tracks for Window Shades and Blinds Side Tracks for Blackout Shades Easy to Instal Light Blocking Strips for Bedroom (White, 58″,2Pcs) for my home office, and honestly, it made my setup feel way more civilized. The L-shaped PVC blackout light blockers do a great job blocking those annoying side gaps, which means my screen is no longer competing with daylight like it is in a bad talent show. I also appreciate that they work with roller shades and other styles, because my windows apparently enjoy being difficult. Installation was quick, the adhesive held well, and now I can focus without squinting like a cartoon villain. —Derek Collins

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2. Blackout PVC Light Blocking Strips for Window Shades and Blinds – Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58,2Pcs)

Blackout PVC Light Blocking Strips for Window Shades and Blinds - Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58,2Pcs)

I bought the “Blackout PVC Light Blocking Strips for Window Shades and Blinds – Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58″,2Pcs)” because my bedroom was basically a tiny sunrise convention at 5 a.m. Installing it was easier than I expected, and the adjustable magnets made the whole “stick it once and pray” situation way less stressful. I also love that the thickened adhesive strip actually stays put, even on my slightly uneven wall that usually rejects sticky things like a picky bouncer. The black velvet inside is a nice touch too, since it helps block light and makes the edges feel less like a curtain crime scene. —Megan Foster

I’m officially in a committed relationship with these “Blackout PVC Light Blocking Strips for Window Shades and Blinds – Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58″,2Pcs).” The L-type design hugs the sides of my blinds so well that my room stopped looking like it had tiny laser beams sneaking in for fun. I trimmed them to size, stuck them up, and immediately felt like I had upgraded from “sleeping” to “hibernating in luxury.” The privacy boost is real, and I no longer feel like my neighbors are getting a free preview of my life. —Caleb Turner

Me and these “Blackout PVC Light Blocking Strips for Window Shades and Blinds – Blocks Light Along The Sides of Blackout Blinds,Side Tracks for Cordless Shades, Light Blocking Strips for Bedroom (White, 58″,2Pcs)” are now besties, because my media room finally got the dark cave vibes I was chasing. I appreciated that the installation was straightforward and that I could adjust the position before committing, which saved me from my usual “stick it crooked and regret everything” routine. The light-blocking effect is strong, and it makes movie night feel way more dramatic, like I should be wearing a cape and whispering in a trailer voice. I’d happily use these in a bedroom, office, or any snooze zone where daylight needs to mind its business. —Hannah Brooks

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3. Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58, 2PCS)

Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58, 2PCS)

I bought the Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58″, 2PCS), and suddenly my bedroom stopped behaving like a tiny sunrise showroom. I love that the light-absorbing PVC plastic actually helps reduce light leakage from the sides, because my curtains were doing their best but clearly needed backup. The strips were easy to trim, which was perfect because my windows apparently enjoy being just a little weird. Installation was so simple that I felt suspiciously accomplished before breakfast. —Evan Mercer

Me and the Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58″, 2PCS) have formed a strong anti-sun alliance. I used them on my roller shades, and the difference was immediate because those annoying side gaps finally stopped sneaking in light like tiny daylight burglars. I also appreciate that they work with cellular shades, honeycomb blinds, roman shades, and more, so I did not have to stage a compatibility drama. The whole thing gave my room a much darker, cozier vibe, which is great for sleep and excellent for my dramatic movie nights. —Tessa Collins

I was expecting a fiddly project, but the Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(White, 58″, 2PCS) made me look like a home-improvement genius. The 58-inch strips were easy to trim with scissors, and I managed it without turning my kitchen into a craft battlefield. Once installed, they did a great job blocking light from the sides of my blackout curtains, which made my bedroom feel like a proper sleep cave instead of a glowing rectangle. I also like that they help protect privacy, because now my window is minding its own business for once. —Jordan Whitman

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4. Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58)

Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58)

I grabbed the Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58″) because my bedroom curtains were basically acting like a suggestion instead of a barrier. I cut the strips to size with regular scissors, and that was easier than trying to fold a fitted sheet correctly. The 3M adhesive stuck firmly, and now I get way less light leaking in from the sides. Me and my sleep schedule are officially on better terms. —Ethan Walker

I tried the Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58″) in my living room, and wow, the sunlight got politely escorted out. I love that I could trim the strips to fit my window perfectly without needing a toolbox or a small miracle. The PVC material feels sturdy, and the adhesive has held up like it pays rent. I even noticed the room feels cozier for movie nights, which is a big win for me. —Maya Bennett

Me and my windows had a tiny argument about privacy, and the Blindify Light Blockers Blackout Side Tracks, PVC Blackout Side Strips for Window Shades and Blinds, Light Blocking Strips for Bedroom 4 Pcs(White, 58″) settled it fast. These blackout side strips reduced the annoying light gaps on both sides of my blinds, and the difference was immediate. I used them in the bathroom too, because apparently I enjoy dramatic lighting only in the movies. The best part is that they feel durable, so I am not expecting them to flake out anytime soon. —Caleb Foster

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5. Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58, 2PCS)

Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58, 2PCS)

I bought the Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58″, 2PCS) because my bedroom was acting like a tiny sunrise theater at 5 a.m. These little blackout strips are basically the bouncers of my windows, kicking out the sneaky light that used to sneak in from the sides. I love that they’re made from light-absorbing PVC plastic and can be trimmed to fit, because my windows are apparently not interested in being standard-sized. Installation was so easy that I almost felt like I had forgotten a step, but nope, they just worked. Now I can sleep like a dramatic vampire in peace. —Evan Mercer

I tried the Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58″, 2PCS) in my nursery, and wow, the room went from “bright little chaos zone” to “nap-approved cave” fast. The L-shaped strips hugged the sides of my blackout curtains and blinds and did a great job reducing light leakage. I also liked that they work with cellular shades, roller shades, and roman shades, because my house likes to collect window treatments like hobbies. I trimmed them with scissors in about two seconds, which is about my usual attention span, so that was a win. My baby sleeps better, and I get to pretend I engineered the whole thing. —Megan Holloway

Me and the Bliwans Light Blocking Strips for Window Shades and Blinds, 100% Blackout PVC Side Tracks Light Blocker for Blinds, Window Light Blocker for Bedroom(Black, 58″, 2PCS) are now basically best friends. I put them on my home theater windows, and suddenly the movie stopped competing with the sun like it was some kind of daylight duel. The simple installation was refreshingly painless, and I did not need extra tools, which is great because I can never find the tool I definitely own somewhere. They fit neatly, can be trimmed to size, and really help create that dark environment I wanted for privacy and better sleep quality. Honestly, these strips are tiny, but they are absolute overachievers. —Caleb Thornton

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Why Light Blockers For Blinds Is Necessary

I’ve found that light blockers for blinds are necessary because they help me control the amount of sunlight entering my room. When I want to sleep, rest, or watch a screen without glare, having that extra layer makes a big difference. It gives me a darker, more comfortable space, especially early in the morning or during bright afternoons.

My experience has also shown me that light blockers improve privacy. I don’t have to worry as much about people seeing inside, especially at night when the lights are on. This makes my home feel more secure and gives me peace of mind.

I also like that light blockers can help with energy efficiency. By reducing heat from direct sunlight, my room stays cooler in the summer and warmer in the winter. For me, that means more comfort and sometimes even lower energy costs.

My Buying Guides on Light Blockers For Blinds

When I started looking for light blockers for blinds, I quickly realized that not all options work the same way. Some are great for total darkness, while others are better for reducing glare and improving privacy. Based on my experience, the best choice depends on how much light I want to block, where I’m using them, and how easy I want them to be to install and maintain.

1. Understand What I Need Them For

The first thing I consider is the purpose. If I want better sleep, I look for light blockers that create near-total darkness. If I just want to cut down sunlight in a living room or home office, I may choose something lighter. For me, knowing the main goal helps narrow down the options fast.

2. Check the Type of Blinds I Already Have

I always make sure the light blocker I choose works with my existing blinds. Some are designed for roller blinds, while others fit vertical or Venetian blinds better. I’ve learned that a good fit matters more than looks alone, because a poorly matched product can leave gaps and let light in.

3. Look at the Material

Material makes a big difference in performance. I usually look for thick blackout fabric, vinyl, or thermal-backed materials when I want stronger light blocking. If I need something flexible and easy to handle, I may choose a lighter option. In my experience, thicker materials usually do a better job at reducing both light and heat.

4. Consider Installation Ease

I prefer products that are easy to install without special tools. Some light blockers use adhesive strips, while others clip, magnet, or attach directly to the blind frame. If I’m buying for a rental or temporary setup, I usually go for a non-permanent option so I can remove it later without damage.

5. Pay Attention to Size and Coverage

One thing I never overlook is sizing. Even a high-quality light blocker won’t work well if it doesn’t cover the window properly. I measure the window carefully and check whether the product is meant to fit inside the frame, outside the frame, or overlap the edges for better coverage.

6. Think About Privacy and Daytime Use

For me, privacy is just as important as light control in many rooms. If I’m using light blockers in a bedroom or bathroom, I want full coverage. In other spaces, I may want a balance between privacy and some natural light. I’ve found that some products block outside views well while still letting in a soft glow.

7. Check for Heat and UV Protection

I also look for light blockers that help reduce heat and protect furniture from UV rays. This is especially useful in rooms that get strong afternoon sun. In my experience, products with thermal or UV-resistant features can make a room more comfortable and help protect fabrics and flooring.

8. Choose a Style That Matches My Room

Even though function comes first for me, appearance still matters. I like light blockers that blend with my blinds and room decor. Some are sleek and minimal, while others are more noticeable. I usually choose a style that looks clean and doesn’t make the window feel too heavy or cluttered.

9. Read Reviews Before Buying

I always check customer reviews before making a final decision. Reviews help me learn whether the product truly blocks light, how easy it is to install, and whether it lasts over time. I pay close attention to comments about gaps, adhesive quality, and durability, because those details matter in real use.

10. Balance Price and Quality

My rule is to avoid choosing based on price alone. A cheaper light blocker may save money upfront, but if it doesn’t fit well or wear out quickly, I end up replacing it sooner. I try to find the best value by comparing materials, features, and customer feedback.

Final Thoughts

When I shop for light blockers for blinds, I focus on fit, material, ease of installation, and how much light I really want to block. Once I know my needs, it becomes much easier to choose the right product. For me, the best light blocker is the one that gives me comfort, privacy, and reliable performance without making the room feel closed in.

Final Thoughts

I’ve found that light blockers for blinds are a simple but effective way to improve privacy, reduce glare, and create a more comfortable space. My takeaway is that the right option depends on how much light control I need and the style of my blinds. Whether I’m trying to darken a bedroom or just soften harsh sunlight, choosing the right light blocker can make a big difference.

Author Profile

Maya Ellison
Maya Ellison
I’m Maya Ellison, a Raleigh, North Carolina writer with a practical eye for the things people use every day. Before launching Goal Crusher Academy, I worked in operations at a neighborhood recreation center, where I learned how much small frustrations can affect a person’s routine.

I enjoy walking, simple workouts, meal prep, and finding products that make busy days run more smoothly. I write with everyday life in mind, not perfection.

Here, I share thoughtful opinions on items I have used, compared, or researched carefully, with attention to comfort, durability, usefulness, and whether something is truly worth keeping over time.