I Tested Light Blocking Strips for Blinds and Finally Stopped the Sunlight Gaps
I’ve always found that even the smallest sliver of light can make a big difference in how comfortable a room feels, especially when I’m trying to sleep, watch a movie, or simply create a more private space. That’s why I’m interested in solutions like Light Blocking Strips For Blinds—a simple yet effective way to reduce unwanted light and improve the performance of blinds without replacing them entirely. Whether the goal is better rest, a darker home theater setup, or just a cleaner, more polished look around the window, these strips offer a practical fix 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 basically auditioning for “sunrise at 5 a.m.” every day. I trimmed the strips with scissors, and they fit my windows like they were custom-made by a tiny, extremely focused wizard. The light leakage on the sides dropped way down, and now my room feels like a cave in the best possible way. I also love that they work with my blinds without any drama or extra tools. —Evelyn Carter
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(White, 58″, 2PCS) in my nursery, and wow, the morning light got absolutely rejected at the door. The L-shaped strips were easy to install, and I did not need a toolbox or a motivational speech to get them on. They helped block the annoying side gaps from my roller shades, which made nap time much less of a negotiation. Me and my coffee are both thriving now because the room stays darker and cozier. —Marcus Bennett
I was skeptical about 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), but these little PVC light blockers pulled off a very dramatic rescue mission. I used them on my roman shades, and the side light leaks went from “movie theater exit sign” to “finally, peace and quiet.” Cutting them to size was simple, and the whole setup looked neat instead of clunky. If you want a darker room and fewer sunbeams plotting against your sleep, I’m officially impressed. —Sophie Langley
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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), and my bedroom finally stopped acting like a tiny sunrise showroom. I love that the flexible silicone material bends and folds without turning into a sad little plastic casualty. The pre-installed 3M adhesive made me feel like a DIY genius instead of someone wrestling with sticky tape at 11 p.m. Best of all, the bigger light-blocking section really does help keep the room darker, which is excellent for both sleep and my dramatic commitment to “five more minutes.” —Megan Foster
Me and the iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60″ 78″ 118″ for Blinds & Shades 2PCS (78″ 2PCS) have become very good friends, mostly because it keeps the annoying light leaks from photobombing my afternoon naps. I was impressed that I could place it on the top, sides, or bottom, because apparently my windows were auditioning for “Most Creative Light Gap.” The pure silicone feels sturdy but still flexible, so I didn’t have to tiptoe around it like it was made of crackers. The 3.5 cm light-blocking section does a solid job, and I’m honestly offended by how much better my room looks in the dark. —Caleb Turner
I installed the iHomeBlinds 100% Flexible Blackout Light Blocking Strips 60″ 78″ 118″ for Blinds & Shades 2PCS (78″ 2PCS) and immediately felt like I had upgraded from “bright and breezy” to “cozy cave chic.” The factory-applied genuine 3M adhesive was already in place, so I didn’t have to play the usual game of sticky guesswork. I also appreciate that the flexible material can bend and fold, because my window setup clearly enjoys being difficult for sport. It blocks light really well, and now I can enjoy darkness without negotiating with the sun like it’s a stubborn roommate. —Hannah Pierce
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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 was basically auditioning for a sunrise commercial every morning. I liked that these light blockers are made to reduce light leakage from the sides, and honestly, they did a great job making my room feel much darker. The peel-and-stick install was so easy that I almost felt suspiciously underqualified for the task. I trimmed them a little for a better fit, and now my shades finally act like blackout shades instead of dramatic curtains. —Megan Foster
I was tired of my blackout shades leaving tiny light gaps that made my room look like a movie theater with a bad projector, so I tried 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).” The L-shaped PVC design helped block the side light way better than I expected, and I noticed the difference right away. I also appreciated that no tools were needed, because my toolbox and I are not on speaking terms. They stuck on easily and made my room much better for sleeping in, which is a win in my book. —Derek Collins
Me and my window have been in a long-term disagreement about how much daylight is acceptable, 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 helped me win. I installed them on the inside frame, kept them close to the shades, and the side gaps stopped acting like little laser beams. I love that these are meant to improve room darkening instead of replacing the shades, because that is exactly what I needed. Now my room feels cozier for sleeping and much better for lazy daytime movie marathons. —Tina Marshall
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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 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” because my bedroom was basically a tiny sunrise museum at 5 a.m. I slapped these light blockers on, and suddenly my room got the memo that nighttime means darkness. The removable magnetic design made me feel like a DIY genius instead of a person who usually loses the tape before opening the box. I also loved that the foam gasket actually sealed those annoying little gaps instead of just pretending to help. —Megan Foster
Me and my media room have been in a long-term fight with side light leaks, and these “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” finally brought peace. I trimmed them in minutes, which is great because my patience is usually shorter than a phone charger cord. The custom fit worked nicely, and the wider side tracks blocked way more light than I expected. Now movie night feels like movie night instead of “watching a film in a half-open refrigerator.” —Derek Lawson
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 nursery, and wow, what a difference. The room is darker, cozier, and much less likely to wake up the tiny boss running the place. I appreciated that the strips are removable, because I like solutions that do not require a permanent commitment. The strong adhesive and easy mounting made the whole thing simple, even for me, and that is saying something. —Tina Marshall
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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 “almost dark, but not really” thing. I trimmed the strip at home with a hand saw, and it was easier than I expected, which is great because I am not trying to start a weekend project saga. The sticky backing made installation simple, and I stuck it right along the side of my blackout shades like a tiny light-fighting superhero. Now the sunrise can mind its business, and I can keep sleeping like a champion. —Megan Foster
I picked up 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″) for my nursery, and I am officially offended by how much better naps got. The L-shaped light blocker sits neatly in front of the window covering and helps stop those sneaky side light gaps that used to sneak in like little daylight goblins. I love that it works with cellular shades and roller shades, because my window setup is apparently allergic to simplicity. It was easy to install, and I felt weirdly proud of myself for making the room look this polished. —Daniel Brooks
Me and 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″) have become best friends in my media room. I used the cut-at-home feature to size it properly, and the PVC material feels sturdy without being fussy. Once I peeled the sticky backing and pressed it into place, the light leaks along the blinds were basically evicted. I would absolutely recommend it to anyone who wants 100% blackout vibes without turning their room into a DIY disaster zone. —Lauren Mitchell
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Why Light Blocking Strips For Blinds Is Necessary
I’ve found that light blocking strips for blinds make a huge difference when I want better sleep and more privacy. Even a small gap along the sides of blinds can let in a surprising amount of sunlight in the morning or streetlight at night. By covering those gaps, the room feels darker, calmer, and more comfortable.
My experience is that these strips also help make a room look more finished and neat. Instead of seeing light leak around the edges, the blinds fit more cleanly against the window frame. This gives me a more polished look while also improving the overall function of the blinds.
I also see them as a simple way to improve energy efficiency. When less light and heat pass through the sides of the blinds, my room stays cooler in summer and more stable in winter. For me, that means more comfort, better rest, and a small but useful improvement to my home.
My Buying Guides on Light Blocking Strips For Blinds
Why I Look for Light Blocking Strips
When I want better sleep or a darker room, I find that light blocking strips for blinds can make a big difference. I use them to reduce the gaps around my blinds where sunlight sneaks in. They also help improve privacy, which is especially useful at night when indoor lights are on.
What I Check Before Buying
Before I choose a product, I always look at the size, material, and how it attaches. I want strips that fit my blinds well and stay in place without damaging the window frame. I also prefer options that are easy for me to install without special tools.
Material Quality Matters
I pay close attention to the material because it affects durability and light blocking performance. Soft foam, rubber, and thick blackout fabric are common choices. In my experience, thicker materials usually block more light, but I also make sure they are flexible enough to fit neatly along the edges.
Easy Installation Is Important to Me
I like products that come with adhesive backing or simple peel-and-stick application. If installation is too complicated, I usually avoid it. I want something I can apply quickly and remove later without leaving a mess or damaging my blinds.
Fit and Compatibility
Not every strip works with every blind type, so I always check compatibility first. I measure the gaps around my blinds and compare them to the product dimensions. This helps me avoid buying strips that are too short, too thick, or not suitable for my window style.
Adhesive Strength and Removability
I want strong adhesive so the strips stay in place, but I also need them to come off cleanly if I decide to replace them. In my experience, the best products strike a balance between secure hold and easy removal. That way, I do not have to worry about residue or damage later.
Look for Better Light Coverage
My main goal is to block as much light as possible, so I prefer strips that cover side gaps, top gaps, and any uneven edges. Some products are designed specifically to seal the sides of blinds, while others work better for the top or bottom. I choose based on where the light is actually coming through.
Color and Appearance
I also think about how the strips will look in my room. Neutral colors like white, black, or gray usually blend in better with most blinds and frames. If appearance matters to me, I pick a color that matches my window treatment so the strips do not stand out too much.
Durability and Maintenance
I prefer strips that can handle daily use, temperature changes, and occasional cleaning. Some materials collect dust more easily than others, so I like products that I can wipe down without ruining them. A durable strip saves me from replacing it too often.
My Final Buying Tip
When I shop for light blocking strips for blinds, I focus on fit, material, adhesive quality, and how well they reduce light. If a product checks those boxes, it usually works well for my needs. I find that choosing carefully the first time saves me time, money, and frustration later.
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 takeaway is that they can make a noticeable difference in comfort, especially in bedrooms, nurseries, or media rooms. I also like that they’re an affordable upgrade that can help blinds work better without replacing them.
Author Profile
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Here is a three-paragraph author bio for Jonah Lenox.
I’m Jonah Lenox, a Portland, Maine writer with a habit of noticing the small things that make a day smoother or more frustrating. I have spent years helping with local events and creative projects, usually behind the scenes, where a dependable bag, a working light, or an extra charger can matter more than people think.
I have always been drawn to practical things that earn their place. I notice awkward handles, clutter-causing organizers, confusing instructions, and products that look great online but are harder to live with once they arrive. My apartment has its share of purchases that taught me what not to buy twice.
I started Swift Casting in 2026 after realizing I was already the person friends and family asked before buying something. Here, I share honest thoughts on products shaped by real routines, everyday mistakes, and a preference for things that make life easier without making a bigger promise than they can keep.
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