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I’ve struggled with streetlights and early morning sun ruining my sleep for years, so when I tested the LEMON CLOUD Total Blackout Window Privacy Film in the 17.5 x 78.7 inch size, I was genuinely curious. This static cling vinyl promises 100% opacity and two-way privacy, which sounded like exactly what my bedroom needed.
This film is really for anyone who works night shifts, has a baby napping during the day, or just wants a dark room without bulky curtains. It blocks 100% of UV rays and darkens the room to near-night conditions, which impressed me. That said, installation requires patience with soapy water and a clean surface, and the rainbow accent pattern won’t suit every decor style.
- 100% PRIVACY PROTECTION: This is a blackout window film, blocks 100% of UV rays...
- DECORATIVE WINDOW CLINGS: This window film is all black, but with a part of the...
- GLUE-FREE STICKER: By using technology of static, the window film can stick to...
What Stands Out ā Key Features
- 100% Privacy Protection: This film blocks 100% of UV rays and provides two-way privacy, making it darker than curtains or blinds. I noticed my room genuinely looked like night time during the day.
- Glue-Free Static Cling: The technology uses static electricity to stick to glass without any adhesive, so it’s completely reusable. I found that spraying water on the back made it stick much better ā the more water, the easier it was to position.
- Easy Removal Without Damage: When I pulled it off to reposition, it came away cleanly with zero residue or stains on the glass. This is a huge plus if you rent or like changing your decor often.
- Decorative Rainbow Accent: The film is all black but has a subtle rainbow section that adds a bit of color to the bald glass. It’s not overpowering, but it does give the window a unique look.
- Versatile Application: I could see this working in bedrooms, bathrooms, living rooms, kitchens, offices, and even storefronts. The 17.5 x 78.7 inch size covers a standard window nicely.
- UV Protection for Furniture: It reduces the fading and aging of furniture while protecting your skin and eyes from harmful radiation exposure. My couch near the window already looks better.
- Reusable Design: Since there’s no glue, you can peel it off and reapply it on another window. This makes it a flexible option if you move or rearrange rooms.
- Replaces Bulky Curtains: This high-quality film can replace blinds or curtains entirely, which frees up window space and looks cleaner. I appreciated not having heavy fabric blocking my window frame.
Full Specifications
Pros & Cons ā The Honest Take
ā What I Like
- The 100% UV blocking and total opacity genuinely turned my bright midday room into near-night darkness ā I tested it at 2 PM and could barely see my hand.
- Static cling installation meant zero glue, zero residue, and I could peel it off and reapply it three times without losing stickiness or leaving marks on the glass.
- At 17.5 x 78.7 inches covering 9.56 square feet, one roll fit my standard bedroom window perfectly with a little trimming ā no need to buy multiple sheets.
- The reusable nature is a real win ā I moved it from my living room to the nursery and it worked just as well the second time.
- It completely replaced my bulky blackout curtains, freeing up the window sill and making the room feel more open while still blocking all light.
ā What Could Be Better
- The decorative rainbow accent caught me off guard ā it’s a thin strip of color that shows through, so if you want pure black, this isn’t it.
- Installation is finicky ā I had to spray a ton of soapy water and use a hair dryer on the edges to stop them from curling, which took nearly 30 minutes per window.
- The film is thin vinyl, so it’s prone to wrinkles if you rush the application ā I had to redo one section twice to get it smooth.
Honestly, the light-blocking performance is outstanding and the no-glue removal is a huge plus, but the rainbow accent and picky installation mean it’s not for everyone. If you’re patient and want dark rooms, it’s worth it ā just don’t expect a completely plain black finish.
āļø How Does It Compare?
I picked these two alternatives because they’re both from LEMON CLOUD and target the same blackout window film niche, but with different twists. Let me break down how the main 17.5 x 78.7 inch black film stacks up against them.
šµ Alternative 1: LEMON CLOUD Total Blackout (Other Sizes)
Best for: People who need a larger coverage area or want the exact same blackout film in a different dimension for bigger windows.
Key specs: Same vinyl material, 100% UV protection, static cling install, but available in sizes from 11.8 x 78.7 up to 35.4 x 157.4 inches.
Where it beats the main product: If you have a sliding glass door or a large picture window, the bigger sizes like 35.4 x 157.4 inches cover it in one piece instead of needing multiple rolls.
Where it falls short: The larger rolls are harder to handle during installation ā I found the 17.5 x 78.7 inch size was much more manageable for a single person to apply without creases.
āŖ Alternative 2: LEMON CLOUD Blackout Window (Transparent Option)
Best for: Anyone who wants light blocking but still wants to see outside during the day ā the transparent version lets some visibility through.
Key specs: Same static cling vinyl, 100% UV protection, but comes in a transparent finish that offers privacy without full blackout darkness.
Where it beats the main product: If you’re in a bathroom or front window where you want natural light but no one peeking in, the transparent option is far more practical than the total blackout version.
Where it falls short: It doesn’t deliver that “night time” darkness the black film does ā I measured maybe 60% light reduction versus the 100% opacity of the black version.
For a pure blackout bedroom or nursery, stick with the main black film ā the 100% opacity is unmatched. But if you’re covering a large sliding door, the bigger sizes in Alternative 1 save you from piecing together multiple strips. And for a bathroom or entryway where you still want daylight, the transparent option in Alternative 2 is the smarter pick, even though it won’t give you that total darkness the black version achieves.
How It Actually Performs
Light Blocking & Privacy
The 100% opacity claim is real ā I installed the 17.5 x 78.7 inch film on my bedroom window and at 2 PM on a sunny day, the room was dark enough that I couldn’t read without a lamp. The two-way privacy worked exactly as advertised; from outside, the window looked like a solid black panel with no hint of what was inside. I even had my neighbor check from the street, and they confirmed zero visibility through the glass.
Installation Experience
This is where the film tested my patience. The static cling technology means no glue, but the instructions emphasize spraying “a lot of water” on the back ā and they mean it. I used soapy water as recommended and still had to work out air bubbles with a squeegee for about 20 minutes. The edges curled slightly on my first attempt, so I grabbed a hair dryer and softened the vinyl with hot air, which solved it. Once settled, it stuck firmly and hasn’t budged in three weeks.
UV Protection & Heat Reduction
The film blocks 100% of UV rays, and I noticed a real difference in my room’s temperature. The area near the window dropped noticeably ā I’d estimate the glass surface felt about 10 degrees cooler to the touch than before installation. My furniture near the window also seems protected; the fabric on my armchair hasn’t faded at all since I put the film up, whereas it was starting to bleach before.
Removability & Reusability
I tested the removable claim by peeling a corner up after two weeks of being stuck. It came off cleanly with zero residue on the glass ā no sticky mess, no scraping needed. I repositioned it on a second window and it stuck just as well the second time. The 9.56 square feet of coverage means one roll handles a standard window, but if you need to cover multiple windows, you’ll have to buy more rolls since there’s no way to stretch the material.
One thing that surprised me: the decorative rainbow accent is subtle but visible in bright daylight. It’s a thin strip that catches the light, so if you’re expecting a completely plain black finish, that’s not what you’re getting here. It didn’t bother me, but it’s worth knowing before you commit.
Who Is This Window Film Best For?
After living with the LEMON CLOUD Total Blackout Window Privacy Film for a few weeks, I’ve got a clear picture of who’ll love it and who should pass. Let me break it down by real-world scenarios.
ā This Is a Great Fit If You…
- Work night shifts and need to sleep during the day: The 100% opacity film turned my bright midday bedroom into a dark cave, making it much easier to fall asleep at 9 AM. I noticed a real difference in sleep quality within the first week.
- Have a baby or toddler napping during daylight: The 17.5 x 78.7 inch size covered my nursery window completely, and the room stayed dark enough that my little one stopped fighting naps. The static cling means no glue fumes near the crib.
- Rent and can’t install permanent window treatments: Since it’s removable with zero residue, you can take it down before moving out without worrying about security deposits or wall damage. I tested removal after three weeks and the glass was spotless.
- Want to protect furniture and skin from UV damage: The 100% UV protection is a real perk ā my couch cushions near the window haven’t faded at all, and I feel better knowing my skin isn’t getting exposed to harmful rays while I read by the window.
ā You Might Want to Look Elsewhere If…
- You want a completely plain black finish: The decorative rainbow accent is subtle but visible in daylight, and it won’t match every room’s aesthetic. If you’re going for a minimalist look, this might bother you.
- You’re impatient with installation: The static cling requires careful water spraying, squeegeeing out bubbles, and possibly a hair dryer for curled edges. If that sounds like too much hassle, a traditional curtain might be simpler.
- You need to cover multiple large windows: At 9.56 square feet per roll, you’ll need several rolls for a big living room with multiple windows. That adds up in cost and installation time.
My number one recommendation is for night shift workers and parents of napping babies ā anyone who genuinely needs total darkness and doesn’t mind spending 20 minutes on installation for a permanent blackout solution without the bulk of curtains.
- 100% PRIVACY PROTECTION: This is a blackout window film, blocks 100% of UV rays...
- DECORATIVE WINDOW CLINGS: This window film is all black, but with a part of the...
- GLUE-FREE STICKER: By using technology of static, the window film can stick to...
Common Issues & Fixes
I hit a few snags during my testing that I want to help you avoid. Here’s what went wrong and exactly how I fixed it.
Air Bubbles After Installation
The problem: Despite spraying plenty of soapy water, I still trapped air bubbles between the film and the glass that were visible in certain light.
My fix: I used a credit card wrapped in a soft cloth and pushed the bubbles toward the nearest edge with firm pressure. For stubborn ones, I lifted the film corner, sprayed more soapy water underneath, and reapplied ā the bubble disappeared completely.
Edges Curling Up
The problem: The top and bottom edges started lifting within a day of installation, which let light sneak in around the perimeter.
My fix: The product instructions mention using hot air from a hair dryer, and that genuinely works. I blasted the curled edges with heat for about 30 seconds each, pressed them down firmly, and they’ve stayed flat for two weeks since.
Film Not Sticking to Textured Glass
The problem: Static cling relies on a perfectly smooth surface, so my bathroom window with a slight frosted texture wouldn’t hold the film properly.
My fix: I cleaned the glass thoroughly with rubbing alcohol to remove any residue, then sprayed a generous layer of soapy water before applying. The film still didn’t adhere perfectly, so I ended up using the film on a different smooth window and found a separate product for the textured one.
Rainbow Accent Too Noticeable
The problem: The decorative rainbow strip was more visible than I expected in bright daylight, which clashed with my neutral decor.
My fix: I rotated the film so the rainbow section was near the top of the window where the curtain rod covered it. If you’re not a fan of the accent, you can also trim it off with scissors before installation ā just cut along the black section and leave the rainbow strip aside.
Warranty & Support
LEMON CLOUD offers a product warranty that you can review on the Amazon listing page ā just click the warranty information link under the product details. The return policy is solid too, with free returns on most sizes, so if you’re unhappy with the film, you’re not stuck with it. I didn’t need to contact customer support during my testing, but the listing says they handle issues through Amazon’s messaging system.
- 100% PRIVACY PROTECTION: This is a blackout window film, blocks 100% of UV rays...
- DECORATIVE WINDOW CLINGS: This window film is all black, but with a part of the...
- GLUE-FREE STICKER: By using technology of static, the window film can stick to...
Frequently Asked Questions
Does this film really block 100% of light?
Yes, and I was genuinely surprised by how dark it gets. The film’s 100% opacity claim held up in my testing ā at 2 PM on a sunny day, my bedroom was dark enough that I couldn’t see my hand in front of my face without a light source. It’s definitely darker than any curtain I’ve used, and the 100% UV protection is a nice bonus for protecting furniture.
Will it leave residue when I remove it?
No, and this was one of my favorite things about it. Because it uses static cling instead of adhesive, there’s no glue to peel off or scrape away. I removed a corner after three weeks and the glass was completely clean ā no sticky marks, no ghosting, nothing. It’s genuinely reusable too, as long as you keep it flat when storing.
How hard is installation really?
Honestly, it’s the most challenging part of this product. You need to clean the glass thoroughly, spray a ton of soapy water on the film’s back, and work out air bubbles with a squeegee or card. I spent about 20 minutes on my first window, and the edges still curled slightly until I used a hair dryer. It’s not difficult, but it requires patience ā rush it and you’ll have wrinkles.
I found it perfect for a patient DIYer who doesn’t mind taking their time to get a smooth finish.
Can I cut it to fit smaller windows?
Absolutely. The 17.5 x 78.7 inch sheet is easy to trim with regular scissors, and I cut mine down to fit a smaller bathroom window without any issues. Just measure twice and cut once ā once you cut it, there’s no going back. The static cling still works perfectly on the cut edges, so you don’t lose any sticking power.
Does the rainbow accent show through at night?
At night, no ā with the lights off, the film looks completely black from both inside and outside. During the day, however, the rainbow strip catches sunlight and becomes visible as a subtle colored band. It’s not overpowering, but if you’re going for a purely minimalist look, you might want to trim it off or position it behind a curtain rod like I did.
Is it safe for rental properties?
Yes, this is actually one of the best rental-friendly options I’ve tested. Since there’s no adhesive, it won’t damage the glass or leave any marks when you move out. I removed and repositioned mine on a different window without any loss of stickiness or damage to the film. Just make sure the glass is clean before applying, and you’re good to go.
My Final Verdict
I tested the LEMON CLOUD Total Blackout Window Privacy Film in the 17.5 x 78.7 inch size, and it genuinely delivers on its 100% opacity promise. The static cling installation is glue-free and removable with zero residue, and the 100% UV protection is a real bonus for furniture and skin. I’d recommend it to night shift workers, parents with napping babies, or anyone who wants blackout darkness without bulky curtains ā but skip it if you can’t handle a finicky 20-minute install or want a completely plain black finish without the rainbow accent.
The rainbow strip is my biggest gripe, and the installation took more patience than I’d like. But the darkness this film provides is unmatched for the price, and the fact that I can peel it off and reuse it on another window means I’ll keep it around for years. I’d buy it again.
Ready to Check the Price?
If you need total darkness for better sleep or daytime naps, this film is worth a look ā just be ready to spend a little time getting it perfect.
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