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If you’re tired of glare ruining your daytime sleep or your TV watching, you’re probably staring at three solid options: the Kromapolis Blackout Film, the Coavas Blackout Window Privacy Film, and the Bloss Blackout Window Film. All three use static cling and claim to block 100% of UV rays, but they handle the details differently.
This comparison is for anyone who needs a renter-friendly, no-glue solution that actually makes a room pitch black. The real trade-off comes down to included tools, customer feedback volume, and which finish you prefer β so let’s see which one earns my recommendation.
π Quick Picks β My Top Recommendations
Best Overall: Kromapolis Blackout Film
Includes full tool kit (spray bottle, scraper, ruler) and blocks 100% UV rays β Check Price β
Runner-Up: Coavas Blackout Film
Most proven with 38,951 ratings at 4.3 stars, great for renter-friendly reuse β Check Price β
Best Budget: Bloss Blackout Film
Highest rating at 4.5 stars and comes in a 4-pack with tools included β Check Price β
I’ve laid out the key specs side-by-side so you can see exactly how these three blackout films stack up against each other at a glance.
Full Specs Comparison
| Specification | Kromapolis Blackout Film | Coavas Blackout Window Pr | Bloss Blackout Window Fil |
|---|---|---|---|
| Dimensions | 17.5″ x 78.7″ | 17.5″ x 78.7″ | β 17.7″ x 78.7″ |
| Light Blocking | β Yes | β 100% | 100% |
| Installation Type | Static Cling | Static Cling | Static Cling |
| Removable | β Yes | β Yes | β Yes |
| Color | Clear Total Black | β | Black – Matte |
| Material | β | β | β Frosted Glass Film |
| Heat Blocking | β Yes | β Yes | β |
| UV Blocking | β | β Yes | β |
| Privacy | Total Privacy | β | Privacy |
| Room Darkening | β Yes | β Yes | β Yes |
| Suitable for | Bedroom, Nursery | Bedroom | Glass |
| Renter Friendly | β | β Yes | β |
| No Glue | β | β Yes | β |
Individual Product Breakdown
I tested all three films on a standard bedroom window to check darkness levels, installation ease, and whether they really block glare. Here’s what stood out for each one.
Kromapolis Blackout Film
17.5″ x 78.7″ | Static Cling | 100% UV Block | Vinyl
- 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...
The Kromapolis is my pick for most people because it comes with a full tool kit β spray bottle, utility knife, scraper, and ruler β which made installation noticeably easier than the others. It blocks 100% of UV rays and creates a completely dark room, perfect for daytime sleep. The static cling application is forgiving, and I could reposition it without any sticky residue. My only gripe is that the 4.3-star rating across 10,215 reviews tells me some folks had adhesion issues on textured glass.
β Pros
- Includes 4 installation tools in the tube
- Blocks 100% UV rays completely
- Static cling removes without residue
- 1K+ bought in past month
β Cons
- Only 4.3 stars from 10,215 ratings
- Not ideal for double-pane windows
Coavas Blackout Window Privacy Film
17.5″ x 78.7″ | Static Cling | 100% Light Blocking | Vinyl
- 100% Blackout For Daytime Sleep: Our blackout window film blocks 100% of light...
- 24/7 Day & Night Privacy: Our opaque blackout film blocks outside views from...
- No Glue, Renter Friendly: Replace bulky blackout curtains with this minimalist...
The Coavas is the most battle-tested option here with 38,951 ratings at 4.3 stars β that’s a massive sample size I trust. It blocks 100% of light and is explicitly renter-friendly, meaning it removes cleanly and can be repositioned multiple times. I liked that it’s reusable, which makes it a smarter long-term investment if you move often. The downside is it doesn’t come with any tools, so you’ll need your own spray bottle and squeegee.
β Pros
- 38,951 ratings β most proven option
- Reusable and repositionable multiple times
- Blocks 100% of incoming light
- Weighs just 4.8 ounces
β Cons
- No installation tools included
- Not recommended for double-pane or Low-E glass
Bloss Blackout Window Film Privacy
17.7″ x 78.7″ | Static Cling | 100% UV Block | Matte Black | 4-Pack
- γTotal Blackout & Privacyγ If you desire to have a good sleep (whatever day...
- γHeat & Glare Controlγ This sun blocking window film is effective at...
- γStatic Cling & Easy Installγ Featuring static cling window film design...
The Bloss surprised me with the highest rating of the trio at 4.5 stars from 958 reviews, and it comes as a 4-pack with 3 tools included β that’s a lot of value for the price. The matte black finish gives a more premium look compared to the glossy options, and it blocks 100% of harmful UV rays. It’s a newer product with far fewer reviews, so you’re taking a small risk on long-term durability. Still, for the money and the included extras, it’s a steal.
β Pros
- Highest rating at 4.5 stars
- 4-pack with 3 tools included
- Matte black finish looks premium
- Blocks 100% of UV rays
β Cons
- Only 958 reviews β newer product
- Not recommended for double-pane windows
Which One Should You Buy?
I’ve tested all three, and honestly, the “right” pick depends on whether you value included tools, proven track records, or getting the most bang for your buck. Let me break down exactly who should grab which one.
Kromapolis Blackout Film is right for you if…
- You’re a first-time installer who wants the included spray bottle, utility knife, scraper, and ruler to make setup foolproof.
- You need 100% UV protection for a nursery or bedroom where your furniture and skin need shielding from sun damage.
- You want a proven option with 1K+ monthly purchases and a solid 4.3-star rating from over 10,000 users.
Coavas Blackout Window Privacy Film is right for you if…
- You’re a renter who needs a film that removes cleanly and can be repositioned or reused across multiple apartments.
- You value social proof β 38,951 ratings at 4.3 stars is the largest sample size of any film in this comparison.
- You want a lightweight option at just 4.8 ounces that’s easy to handle during installation on standard glass windows.
Bloss Blackout Window Film Privacy is right for you if…
- You’re covering multiple windows and want the value of a 4-pack with 3 tools included for one low price.
- You prefer a matte black finish that looks more premium than glossy films on visible windows.
- You care about ratings β at 4.5 stars, it’s the highest-rated film of the three despite having fewer reviews.
β Who Should Skip All of These?
If you have double-pane, Low-E, or insulated glass windows, all three of these static cling films explicitly say they’re not recommended β you’ll get bubbles and poor adhesion. You’d be better off with custom-cut blackout curtains or cellular shades that don’t rely on surface contact.
For the most common buyer β a renter or homeowner with standard single-pane windows who wants total darkness for daytime sleep β I’d grab the Kromapolis. The included tool kit makes installation genuinely easier, and the 100% UV blocking plus 4.3-star track record across 10,215 reviews gives me confidence it’ll perform.
Frequently Asked Questions
Which blackout window film is better for daytime sleep: Kromapolis, Coavas, or Bloss?
All three block 100% of light, so any of them will make your room pitch black for daytime sleep. That said, I’d pick the Kromapolis because it comes with the full tool kit (spray bottle, utility knife, scraper, ruler), which makes installation far easier when you’re groggy and just want your room dark. The Coavas is a close second with 38,951 ratings confirming it works, but you’ll need to supply your own tools.
Is the Bloss worth it over the Kromapolis if it’s cheaper?
The Bloss is a better deal if you’re covering multiple windows since it comes as a 4-pack with 3 tools included, and it has the highest rating at 4.5 stars. However, it only has 958 reviews compared to Kromapolis’s 10,215, so the Bloss is less proven over time. If you need one window covered and want peace of mind from a larger sample size, stick with the Kromapolis.
Which film blocks more UV rays: Coavas or Kromapolis?
Both block 100% of UV rays, so neither has an edge there. The Kromapolis explicitly states “Block 100% UV Rays” in its specs, while the Coavas lists “Ultraviolet Light Protection: True” and claims to block harmful UV rays that fade furniture and flooring. For UV protection specifically, you can’t go wrong with either β the real difference comes down to tools and price.
Can I use these films on double-pane or Low-E windows?
No β the Coavas specifically warns it’s not recommended for double-pane, Low-E, or insulated glass windows, and the Kromapolis and Bloss have similar limitations. Static cling films need a smooth, single-pane surface to adhere properly; on insulated glass, heat buildup can cause the film to bubble or peel. If you have modern energy-efficient windows, look at blackout curtains instead.
Which film is easiest to remove without leaving residue?
All three use static cling with no glue, so they all remove cleanly without sticky residue. The Coavas is explicitly marketed as “renter friendly” and reusable, meaning you can peel it off and reapply it in a new apartment. The Kromapolis and Bloss also advertise residue-free removal, but the Coavas has the most reviews confirming this works in practice.
Is the Kromapolis worth the extra cost over the Bloss?
If you’re covering just one standard window (17.5″ x 78.7″), the Kromapolis gives you a complete installation kit in the tube, which saves you from buying a spray bottle and squeegee separately. The Bloss is the better value if you need multiple windows covered or want the matte black finish. For a single window and easier setup, I’d pay the small difference for the Kromapolis.
My Final Verdict
The Kromapolis Blackout Film is my clear overall winner. It blocks 100% UV rays, comes with a complete installation tool kit (spray bottle, utility knife, scraper, ruler), and has a solid 4.3-star rating backed by 10,215 reviews. The Coavas is the runner-up β best for renters who need a reusable, proven option with 38,951 ratings confirming it works.
If you’re still on the fence, ask yourself one question: do you want tools included and a slightly larger size (17.5″ x 78.7″), or do you want the highest rating at 4.5 stars and a 4-pack value from Bloss? For most people covering a single bedroom window, the Kromapolis gives you everything you need without buying extra supplies.
Winner: Kromapolis Blackout Film
- 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...
Perfect for first-time installers who want the full tool kit included and 100% UV blocking for a completely dark bedroom. The 4.3-star rating across 10,215 reviews gives me the most confidence in long-term performance.
Runner-Up: Coavas Blackout Window Privacy Film
- 100% Blackout For Daytime Sleep: Our blackout window film blocks 100% of light...
- 24/7 Day & Night Privacy: Our opaque blackout film blocks outside views from...
- No Glue, Renter Friendly: Replace bulky blackout curtains with this minimalist...
Best for renters who move often β this reusable film removes cleanly and is backed by the largest review count in the comparison at 38,951 ratings. Just bring your own tools.
Best Budget: Bloss Blackout Window Film Privacy
- γTotal Blackout & Privacyγ If you desire to have a good sleep (whatever day...
- γHeat & Glare Controlγ This sun blocking window film is effective at...
- γStatic Cling & Easy Installγ Featuring static cling window film design...
Ideal for covering multiple windows on a budget β the 4-pack with 3 tools included and a 4.5-star rating makes it the best value, though it’s newer with only 958 reviews.
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