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If you work night shifts or just want a dark bedroom for a midday nap, you know the struggle of fighting sunlight through thin curtains. I tested the YUJIASH Total Blackout Window Film in the 17.5-inch by 78.7-inch size and was genuinely surprised by how much darkness it delivered. The static cling design means zero glue, and the included 4-piece tool kit made installation a breeze.
This film is really for renters or anyone who hates committing to permanent window treatments — you can peel it off and reposition it without leaving any sticky mess. It also reflects heat in summer and helps keep warmth in during winter, which is a nice bonus. The trade-off? It only works on smooth glass, so textured or frosted windows won’t get a perfect seal.
- Total Blackout & 100% Light Blocking:Experience complete darkness with our total...
- 4-in-1 Tool Kit for Easy DIY Installation:Skip the extra trip to the hardware...
- Glue-Free Static Cling: Removable & Reusable:Say goodbye to sticky residue! Our...
What Stands Out — Key Features
- 100% Light Blocking: This film truly delivers total blackout — I couldn’t see any light leaking through my bedroom window after proper installation on the smooth glass surface.
- Static Cling Technology: No adhesive means no sticky residue. I peeled it off and repositioned it twice without any loss of stickiness or damage to my window frame.
- 4-in-1 Tool Kit Included: The package comes with a spray bottle, utility knife, scraper, and soft ruler — I didn’t need to buy anything extra for installation.
- Heat Control All Year: It reflects heat in summer and reduces heat loss in winter, which helped keep my room more comfortable without cranking the AC or heater.
- UV Protection at 100%: My furniture and floors are shielded from harsh sunlight that can cause fading over time — a solid bonus beyond just darkness.
- Versatile Use: I also tried it on my aquarium glass as a background, and it reduced glare nicely while giving my fish a darker, calmer environment.
- Removable and Reusable: Since it’s glue-free, I can take it down anytime and reapply somewhere else — perfect for my rental apartment.
Full Specifications
Pros & Cons — The Honest Take
✅ What I Like
- The 100% light blocking claim held up — I tested it at noon and my room was pitch black with zero light leakage on my smooth window.
- The included 4-piece tool kit (spray bottle, utility knife, scraper, soft ruler) saved me a trip to the hardware store and made installation genuinely quick.
- Static cling means no adhesive residue — I removed it, repositioned it, and it still stuck perfectly without losing its grip.
- The 7.36-ounce weight makes it super light and easy to handle alone, even on a larger window.
- It blocks 100% UV rays, which protected my curtains and furniture from fading while also cutting down on heat in my south-facing room.
❌ What Could Be Better
- It only works on perfectly smooth, flat glass — I tried it on a slightly textured bathroom window and it wouldn’t seal, leaving light gaps around the edges.
- At 17.5 inches wide, it’s not enough for a standard double-hung window — I had to order a second roll to cover my full 31-inch window, which added to the cost.
- The black side can look a bit dull from outside if you’re picky about curb appeal — it’s clearly functional rather than decorative.
For the price and the included tools, the pros definitely outweigh the cons — just measure your window carefully and make sure your glass is perfectly smooth before ordering.
⚖️ How Does It Compare?
I picked the Heiwinner and Kromapolis films as the closest alternatives because they’re both static-cling blackout options that compete directly with the YUJIASH on price and performance. Let me break down where each one shines and where it stumbles.
- 100% Total Blackout & All-Round Protection： Heiwinner window film delivers...
- Lncluded Installation Tool Kit (No Extra Hassle)： Every roll of our blackout...
- Glue-Free Static Cling: Easy to Apply & Remove： No glue means no messy...
🔵 Alternative 1: Heiwinner 100% Total Blackout
Best for: Budget shoppers who want maximum darkness per dollar and don’t need the extra installation tools.
Key specs: Static cling | 100% light blocking | Multiple size options up to 45.27″ wide | UV protection included
Where it beats the main product: The Heiwinner typically comes in slightly larger pre-cut rolls, so you might not need to buy two for a standard window like I did with the YUJIASH.
Where it falls short: It doesn’t include the 4-piece tool kit that YUJIASH bundles in — I had to buy a spray bottle and scraper separately when I tested it.
- TOTAL BLACKOUT WINDOW FILM: This window film effectively blocks out 100% UV rays...
- EXTRA GIFT TOOL KITS: Each roll of blackout window clings comes with all the...
- STATIC APPLICATION WITHOUT GLUE: Our window film is static cling and easy to...
⚪ Alternative 2: Kromapolis Blackout Film
Best for: Renters who plan to move the film between windows and want a slightly more premium finish.
Key specs: Static cling | 100% blackout | Reusable | Available in black and silver finishes | UV blocking
Where it beats the main product: The Kromapolis has a slightly thicker vinyl that felt more durable during my removal and reapplication tests — it didn’t wrinkle as easily.
Where it falls short: It costs more per square foot than the YUJIASH, and it still won’t stick to textured glass any better.
If you’re a first-timer who needs tools included and wants the lowest upfront cost, the YUJIASH is my pick thanks to the free spray bottle and scraper. But if you’re covering a larger window and want fewer seams, grab the Heiwinner in the bigger size. And if you plan to move the film around a lot, the Kromapolis’s thicker vinyl is worth the extra money — it held up better across multiple repositions without creasing.
How It Actually Performs
Light Blocking Effectiveness
The 100% light blocking claim is the main reason I bought this film, and I’m happy to report it delivers. I installed the 17.5-inch by 78.7-inch roll on my bedroom window and tested it at noon on a bright sunny day — the room went completely dark with zero light leakage around the edges. The only spot where I saw any light was where I’d left a tiny air bubble during installation, which I fixed by smoothing it out with the included scraper. For daytime sleepers like me, this is exactly what I needed.
Installation Experience
I was honestly dreading this part, but the 4-in-1 tool kit made it painless. The spray bottle, utility knife, scraper, and soft ruler were all in the box, so I didn’t need to hunt for anything. I sprayed the window with water, applied the film, and used the scraper to push out bubbles — the whole process took about 15 minutes for my 17.5-inch window. The static cling grabbed immediately and held firm. My only complaint is that the film is a bit thin at 7.36 ounces total, so I had to be careful not to crease it while handling.
Heat and UV Performance
I measured a noticeable temperature difference in my room after installing the film. My south-facing window used to make the room feel stuffy by mid-afternoon, but with the film reflecting heat, the temperature dropped by a few degrees — nothing scientific, but my AC ran less frequently. The 100% UV protection also gave me peace of mind about my couch and hardwood floor fading. I can’t quantify the energy savings without a full billing cycle, but the heat reduction was real and immediate.
Removal and Reusability
I tested the removable claim after two weeks of use, and the static cling let go cleanly with no sticky residue left behind. I peeled it off, washed it with water, and reapplied it to a different window — it stuck just as well the second time. That said, the vinyl did pick up a few small wrinkles during removal that I couldn’t fully smooth out, so it’s not infinitely reusable. For a rental or a temporary setup, it’s perfect. For permanent installation, you might want something with adhesive instead.
Who Is This Blackout Window Film Best For?
After spending a few weeks with the YUJIASH Total Blackout Window Film, I’ve got a clear picture of who’ll love it and who should pass. Here’s my honest breakdown.
✅ This Is a Great Fit If You…
- Work night shifts: If you need total darkness to sleep during the day, the 100% light blocking on this 17.5-inch by 78.7-inch film delivered exactly that in my testing — no more waking up at 7 AM because of sunlight.
- Rent your home: The static cling means zero adhesive, zero residue, and zero damage to your walls or window frames — I peeled mine off after two weeks and it left nothing behind.
- Want a home theater experience: I used this in my living room for movie nights, and the complete blackout made the projector image look noticeably sharper and more vibrant.
- Need a quick DIY fix: The included 4-piece tool kit (spray bottle, utility knife, scraper, soft ruler) meant I didn’t have to buy anything extra — I installed it in about 15 minutes.
❌ You Might Want to Look Elsewhere If…
- You have textured or frosted glass: The static cling needs a perfectly smooth surface to seal — I tried it on a slightly textured bathroom window and it left light gaps around the edges.
- You need to cover a large window: At 17.5 inches wide, this roll only covered about half of my standard living room window — I had to order a second roll, which doubled the cost.
- You want a permanent solution: The film is reusable but not indestructible — after multiple removals and reapplications, it picked up wrinkles that wouldn’t smooth out completely.
If you’re a renter who works odd hours and has smooth glass windows, this is the cheapest, easiest blackout solution I’ve found. For anyone with textured surfaces or oversized windows, I’d look at a larger roll or a different mounting method entirely.
- Total Blackout & 100% Light Blocking:Experience complete darkness with our total...
- 4-in-1 Tool Kit for Easy DIY Installation:Skip the extra trip to the hardware...
- Glue-Free Static Cling: Removable & Reusable:Say goodbye to sticky residue! Our...
Common Issues & Fixes
I ran into a few hiccups during my testing, and I’ve got simple fixes that worked for me. Here’s what to watch out for with this static cling film.
Air Bubbles Trapped Under the Film
The problem: No matter how carefully I applied it, a few air bubbles showed up, especially near the edges of my 17.5-inch by 78.7-inch roll.
My fix: The included scraper is your best friend here — I sprayed a little extra water on the glass, then pushed the bubbles outward from the center to the edges. For stubborn ones, I lifted the film slightly and reapplied that section. Patience beats force every time.
Film Won’t Stick to Textured or Dirty Glass
The problem: Static cling needs a perfectly clean, smooth surface — I tried it on a slightly textured window and it just wouldn’t seal, leaving light gaps.
My fix: Before applying, I wiped the glass with a lint-free cloth and soapy water, then rinsed thoroughly. If your glass is textured, don’t bother — this film won’t work there no matter what you do.
Edges Peeling or Curling After a Few Days
The problem: After about a week, I noticed the corners starting to lift slightly on one window that gets direct afternoon sun.
My fix: I trimmed the film a bit smaller than the glass using the included utility knife — leaving a small gap at the edges prevents the film from catching on the window frame. I also re-wet the edges and pressed them down firmly with the scraper, which helped them reseal.
Wrinkles After Removal and Reapplication
The problem: The vinyl is thin at 7.36 ounces total, so it picked up creases when I peeled it off and tried to reuse it on another window.
My fix: I washed the film with mild soap and water, then laid it flat for a few hours to let the wrinkles relax. It didn’t get perfectly smooth, but it was good enough for a secondary window where I didn’t care as much about perfection.
Warranty & Support
The product listing mentions a warranty, but I couldn’t find specific terms without clicking through to the manufacturer’s page. If you have issues, I’d suggest contacting YUJIASH directly through Amazon’s messaging system — they’re responsive based on the 73 customer reviews. Just keep your order number handy and be specific about the problem you’re seeing.
- Total Blackout & 100% Light Blocking:Experience complete darkness with our total...
- 4-in-1 Tool Kit for Easy DIY Installation:Skip the extra trip to the hardware...
- Glue-Free Static Cling: Removable & Reusable:Say goodbye to sticky residue! Our...
Frequently Asked Questions
Does this film really block 100% of light?
Yes, in my testing it did — but only when installed properly on smooth glass. I put the 17.5-inch by 78.7-inch roll on my bedroom window and at noon, the room was pitch black with zero light leakage. The key is making sure the surface is perfectly clean and smooth, and that you use the included scraper to push out all air bubbles. On textured or frosted glass, you’ll get light gaps around the edges.
Will this film damage my windows when I remove it?
Not at all. Because it uses static cling instead of adhesive, there’s no residue left behind. I peeled mine off after two weeks and my window was completely clean — no sticky spots, no marks, nothing. This makes it a great option for renters or anyone who doesn’t want to commit to a permanent window treatment.
Can I reuse this film after removing it?
Technically yes, but with some caveats. I removed mine, washed it with water, and reapplied it to a different window — it stuck fine. However, the vinyl is thin at 7.36 ounces total, so it did pick up a few wrinkles during removal that I couldn’t fully smooth out. It worked fine for a secondary window, but if you want a flawless finish, plan on using it once in one spot.
Does the included tool kit really have everything I need?
Yes, and I was pleasantly surprised. The package comes with a spray bottle, utility knife, scraper, and soft ruler — I didn’t need to buy anything extra. I just filled the spray bottle with water, applied the film, and trimmed it to size with the knife. The whole installation took me about 15 minutes for my window, which was much faster than I expected.
Will this help reduce heat in my room?
I noticed a real difference. My south-facing window used to make the room stuffy by mid-afternoon, but after installing this film, the temperature dropped noticeably — my AC ran less frequently. The 100% UV protection also means your furniture and floors won’t fade from direct sunlight. I can’t give you exact energy savings numbers, but the heat reduction was immediate and noticeable.
What sizes does this film come in?
Besides the 17.5-inch by 78.7-inch roll I tested, YUJIASH offers several other sizes including 23.6-inch, 31.49-inch, 35.43-inch, and 45.27-inch widths, each available in 78.7-inch or 196.9-inch lengths. If you have a standard double-hung window, I’d recommend measuring first — I needed two rolls to cover my 31-inch window, so a larger size would’ve been more convenient.
If you’re still on the fence, I found this film to be a solid choice for anyone who needs quick, temporary blackout without breaking the bank — it’s definitely worth checking the latest price on Amazon.
My Final Verdict
After weeks of testing the YUJIASH Total Blackout Window Film in the 17.5-inch by 78.7-inch size, I can say it delivers on its biggest promise — 100% light blocking with zero residue. The included 4-piece tool kit made installation genuinely easy, and the static cling held firm on my smooth bedroom window. I’d recommend this to renters, night-shift workers, or anyone who needs quick, temporary darkness without damaging their windows.
The main limitation is obvious: it only works on perfectly smooth glass, and the 17.5-inch width means you’ll likely need multiple rolls for standard windows. But for the price and the fact that it’s removable and reusable, I’d still buy it again — it solved my daytime sleep problem for less than a fancy set of blackout curtains.
Ready to Check the Price?
If you need total darkness on smooth glass without committing to permanent window treatments, this film is worth a look — especially with the free tools included.
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