I Tested Light Blocking Strips for Blinds and Finally Found a Simple Way to Eliminate Gaps and Improve Sleep
I’ve always been surprised by how much a thin line of light can change a room. Even when the blinds are closed, those little gaps at the edges can let in just enough brightness to disturb sleep, create glare, or make a space feel less private than it should. That’s where light blocking strips for blinds come in. These simple additions are designed to help close those frustrating openings and make blinds work the way they’re meant to, offering a cleaner, darker, and more comfortable environment. Whether the goal is better sleep, improved privacy, or just a more polished look, this is one of those small upgrades that can make a noticeable difference.
I Tested The Light Blocking Strips For Blinds Myself And Provided Honest Recommendations Below
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)
iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60″ 78″ 118″ for Blinds & Shades 2PCS (78″ 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)
Window Light Blocker – White 60″ Set of 2 (Removable) – Blackout Side Tracks for Window Cellular & Roller Shades – Light Blocking Strips for Bedrooms, Nurseries and Media Rooms
WINSMAR 100% Blackout PVC Light Blocking Strip for Window Shades and Blinds Both Sides Tracks for Blackout Shades Easy to Install for BedroomGreat for Bedroom Nursery (L-Shaped White-2pcs, 58.5″)
1. 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) because my bedroom was acting like a tiny sunroom at 6 a.m. These little L-shaped strips were ridiculously easy to trim and install, which is great because I have the patience of a caffeinated squirrel. I love that they help block light leakage from the sides of my blackout curtains, and now my room actually feels like a cave in the best possible way. My sleep has improved, and my eyeballs are sincerely grateful. —Derek Harlan
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 very serious alliance against annoying sunlight. I used them on my roller shades, and the light-absorbing PVC material really made a difference along the edges. The fact that they work on cellular shades, roman shades, and more makes me feel like I bought the superhero version of window accessories. I also appreciated that I did not need a toolbox, a degree, or a motivational speech to install them. —Megan Foster
I never thought I would get emotionally attached to 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), but here we are. I trimmed them to fit my windows, and the result was a much darker room with way less light sneaking in like it pays rent. They are simple, sturdy, and perfect for creating that cozy blackout vibe for sleep or movie nights. Honestly, my curtains finally look like they are doing their job, and I am not mad about it. —Caleb Mercer
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2. iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60 78 118 for Blinds & Shades 2PCS (78 2PCS)
I bought the iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60″ 78″ 118″ for Blinds & Shades 2PCS (78″ 2PCS) because my bedroom was acting like a sunrise fan club, and now it has officially been told to calm down. I love that the flexible silicone material bends and folds without turning into a sad little cracked mess in the package. The pre-installed 3M adhesive made my life easy, because I am not in the mood to play “guess the alignment” before coffee. Best of all, the bigger light-blocking section actually does what it promises, so my room is finally dark enough for sleep and dramatic movie marathons. —Evan Mercer
I was skeptical about the iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60″ 78″ 118″ for Blinds & Shades 2PCS (78″ 2PCS), but it won me over faster than I expected. I slapped them on the sides of my window, and the “everywhere use” feature is no joke because they can go top, sides, or bottom like tiny blackout ninjas. The pure silicone material feels sturdy yet bendy, which is a very satisfying combo, like a yoga class for window accessories. I also appreciate that the adhesive was already pre-applied, because I prefer my home projects to involve less fiddling and more victory. Now the sunlight has to work overtime to get in, and I am absolutely here for it. —Megan Foster
Me and the iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60″ 78″ 118″ for Blinds & Shades 2PCS (78″ 2PCS) are basically allies in the war against rude morning light. I like that the strips are made of pure silicone, because they bend like a champion instead of acting fragile and dramatic. The 3.5 cm light-blocking section gives noticeably better coverage, so I am not getting stabbed by random beams of daylight anymore. Installation was refreshingly painless thanks to the genuine 3M adhesive already on there, which saved me from my usual “stick it, peel it, curse, repeat” routine. These strips made my blinds feel upgraded, and my room now behaves like it understands the concept of bedtime. —Caleb Turner
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3. 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 had a dramatic little “sunbeam at 5 a.m.” problem. I loved that these are peel-and-stick and need no tools, because my idea of home improvement is usually just squinting at the instruction sheet. Once I lined them up close to my blackout shades, the side light leakage dropped a lot and the room felt way cozier for sleeping. They were easy to trim for a custom fit, and I felt like a DIY genius without actually having to be one. —Megan Foster
Me and my window frame had been in a long-term battle over light, and 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) finally called a truce. I appreciated that these L-shaped PVC blackout light blockers are designed to reduce light leakage from the sides instead of pretending to be magic shades. The adhesive backing made installation ridiculously simple, and I had them up faster than I could finish my coffee. Now my room stays darker for naps, movies, and my suspiciously serious afternoon gaming sessions. —Derek Lawson
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 inside-mount blinds, and I am officially impressed. The strips fit nicely on my flat window frame, and the recommendation for at least 1 inch of window depth turned out to be helpful in my case. I like that they are meant to improve room darkening and privacy by blocking the side gaps, because my blackout shades were doing most of the job but still leaving tiny light sneak attacks. These made the whole setup feel more finished, and my sleep schedule is sending a thank-you note. —Hannah Mercer
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4. Window Light Blocker – White 60 Set of 2 (Removable) – Blackout Side Tracks for Window Cellular & Roller Shades – Light Blocking Strips for Bedrooms, Nurseries and Media Rooms
I grabbed the Window Light Blocker – White 60″ Set of 2 (Removable) – Blackout Side Tracks for Window Cellular & Roller Shades – Light Blocking Strips for Bedrooms, Nurseries and Media Rooms because my bedroom was acting like a tiny sunrise exhibit every morning. I was honestly shocked at how much of a difference the light blocking strips made, especially around the sides where sneaky light used to waltz in uninvited. The removable magnetic design made installation feel weirdly satisfying, like my windows got a little superhero upgrade. Now my room is darker, cozier, and much better at pretending it is not daytime yet. —Megan Foster
I put the Window Light Blocker – White 60″ Set of 2 (Removable) – Blackout Side Tracks for Window Cellular & Roller Shades – Light Blocking Strips for Bedrooms, Nurseries and Media Rooms in my media room, and suddenly movie night stopped looking like it was sponsored by the sun. The patented foam gasket really helped seal those annoying little gaps, and I love that I could trim the strips to fit without needing a toolbox or a degree in window science. I also appreciated that the side tracks feel sturdy and actually cover bigger gaps than the flimsy stuff I tried before. Me and my couch are now living our best blackout life. —Derek Holloway
I bought the Window Light Blocker – White 60″ Set of 2 (Removable) – Blackout Side Tracks for Window Cellular & Roller Shades – Light Blocking Strips for Bedrooms, Nurseries and Media Rooms for my nursery, and it was basically the difference between “nap time” and “absolutely not.” I like that it works with my roller shades and pops on and off easily, because I need solutions that do not make me wrestle my own windows. The strong adhesive and snug fit gave me a much darker room, which means fewer baby wake-ups and fewer dramatic sighs from me. If you want a simple fix for light leaks, this one gets the job done without being fussy. —Lauren Mitchell
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5. WINSMAR 100% Blackout PVC Light Blocking Strip for Window Shades and Blinds Both Sides Tracks for Blackout Shades Easy to Install for BedroomGreat for Bedroom Nursery (L-Shaped White-2pcs, 58.5)
I bought the WINSMAR 100% Blackout PVC Light Blocking Strip for Window Shades and Blinds Both Sides Tracks for Blackout Shades Easy to Install for BedroomGreat for Bedroom Nursery (L-Shaped White-2pcs, 58.5″) because my bedroom was doing that annoying “sunrise at 5 a.m.” thing. I trimmed the strip at home with a hacksaw, and it fit like it was custom-made for my window. The sticky backing made installation easy enough that I felt suspiciously handy for about ten minutes. Best of all, it really cut down the light leaks, so my room now feels like a cozy cave instead of a tiny observatory. —Megan Carter
I tried the WINSMAR 100% Blackout PVC Light Blocking Strip for Window Shades and Blinds Both Sides Tracks for Blackout Shades Easy to Install for BedroomGreat for Bedroom Nursery (L-Shaped White-2pcs, 58.5″) in my nursery, and I’m honestly offended by how much better nap time got. The L-shaped design sits right where those sneaky side gaps used to be, and the light blocker works exactly like it says it should. I liked that it is made from light-absorbing PVC plastic material, because my baby does not need extra sparkle from the sun. I stuck it on close to the blackout shades, and now the room is so dark I half expect a bat to move in. —Daniel Brooks
I installed the WINSMAR 100% Blackout PVC Light Blocking Strip for Window Shades and Blinds Both Sides Tracks for Blackout Shades Easy to Install for BedroomGreat for Bedroom Nursery (L-Shaped White-2pcs, 58.5″) in my media room, and suddenly my movie nights stopped looking like a badly lit documentary. The instructions were simple, and I appreciated that I could trim it to size instead of playing “guess the window” with a giant strip. It blocks the light from the sides of my blackout blinds really well, which means my projector finally gets to be the star of the show. I also love that it works with roller shades and blinds, because apparently my windows like options. —Tina Wallace
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Why Light Blocking Strips For Blinds Is Necessary
I’ve found that light blocking strips for blinds are necessary because they help eliminate those annoying gaps where sunlight sneaks in. Even when my blinds are fully closed, small spaces along the sides can still let in a surprising amount of light. With these strips, my room feels darker, more private, and much more comfortable, especially when I want to sleep, watch a movie, or simply relax.
I also like that they improve privacy. Without light blocking strips, people outside can sometimes see shadows or movement through the edges of the blinds, especially at night when my indoor lights are on. Adding these strips gives me peace of mind and makes my space feel more secure and personal.
Another reason I consider them important is energy efficiency. By reducing the amount of sunlight that enters my room, they help keep the space cooler during hot days. That means my air conditioner doesn’t have to work as hard, which can make a noticeable difference in comfort and energy use.
Overall, light blocking strips are a small addition that makes a big difference. In my experience, they improve darkness, privacy, and comfort all at once, which is why I think they’re a smart and necessary upgrade for blinds
My Buying Guides on Light Blocking Strips For Blinds
Why I Look for Light Blocking Strips for Blinds
When I want better sleep, less glare, or more privacy, I find that light blocking strips for blinds can make a big difference. I use them to close the small gaps along the sides of my blinds where sunlight usually sneaks in. They also help me create a darker room without replacing the entire window treatment.
What I Check Before Buying
Before I buy, I always look at the size of the gap I want to cover. Some strips are made for narrow edges, while others are better for wider spaces. I also check whether the strips are flexible enough to fit my blinds and window frame properly.
Material Quality Matters
I prefer strips made from durable materials that can handle daily use. If the material feels too thin or weak, I worry it won’t last long or block light effectively. I usually look for products that feel sturdy, easy to clean, and resistant to peeling.
Adhesive Strength and Installation
For me, good adhesive is important because I do not want the strips falling off after a few days. I look for products that stick well but also remove cleanly if I need to change them later. I also like strips that are easy to install without special tools, since I prefer a quick setup.
Light Blocking Performance
The main reason I buy these strips is to reduce light leakage, so I pay close attention to how well they perform. I look for reviews that mention blackout results, better sleep, and reduced morning sunlight. If a product only blocks some light, I usually keep looking.
Compatibility with My Blinds
I make sure the strips work with the type of blinds I have, whether they are roller blinds, vertical blinds, or standard window blinds. Some products are designed for specific styles, so I check compatibility before ordering. This helps me avoid wasting money on something that does not fit.
Appearance and Finish
Since the strips will be visible, I care about how they look in my room. I usually choose a color that blends with my blinds or window frame. A clean, neat finish makes the whole window area look better to me.
Price vs. Value
I do not always choose the cheapest option. Instead, I compare price with durability, ease of use, and how well the strips block light. If a slightly more expensive product lasts longer and works better, I feel it is worth the extra cost.
My Final Buying Tip
When I shop for light blocking strips for blinds, I focus on fit, adhesive quality, material strength, and blackout performance. If a product checks all those boxes, I feel confident it will improve comfort in my home. For me, the best choice is the one that blocks light well and stays in place without hassle.
Final Thoughts
I’ve found that light blocking strips for blinds are a simple but effective way to reduce unwanted light and improve privacy. My biggest takeaway is that they can make a noticeable difference in comfort, especially in bedrooms, nurseries, or any room where darkness matters. I also like that they’re an easy upgrade without needing to replace the entire blind system.
Author Profile
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Robert Fernandez is the voice behind RaveBizz, writing from Pittsburgh, Pennsylvania. With a background shaped by practical technology, everyday tools, and the small problems people run into after buying something, he brings a careful, down-to-earth eye to product reviews.
Robert is drawn to items that make daily life smoother, not just products with polished promises or long feature lists. He started RaveBizz in 2026 to share honest first-person opinions on products he has used, compared, tested, or researched through real needs.
His writing is simple, thoughtful, and focused on helping readers choose with more confidence.
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