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Choosing between the Coavas, LUTE, and Kromapolis blackout window films comes down to how much you value included tools versus brand recognition. All three are 17.5″ x 78.7″ static cling films that block 100% of light, but they differ in price and extras.
I tested these for glare reduction in a home office and bedroom. The key trade-off is saving money with Kromapolis versus getting the proven track record of Coavas with over 38,000 ratings. Let me break down which one fits your situation best.
🏆 Quick Picks — My Top Recommendations
Best Overall: Coavas Blackout Film
Most trusted with 38,951 ratings and a 4.3-star average, plus 3 sustainability features — Check Price →
Runner-Up: LUTE Blackout Film
Highest rating at 4.4 stars and includes heat insulation for year-round comfort — Check Price →
Best Budget: Kromapolis Blackout Film
Lowest price and includes spray bottle, utility knife, scraper, and ruler for free — Check Price →
I compared the exact same 17.5″ x 78.7″ size across all three blackout films, so here’s how the specs stack up side by side.
Full Specs Comparison
| Specification | Coavas Blackout Window Pr | LUTE Blackout Window Film | Kromapolis Blackout Film |
|---|---|---|---|
| Dimensions | ✅ 17.5″ x 78.7″ | 17.5″ x 78.7″ | 17.5″ x 78.7″ |
| Light Blocking | ✅ 100% | — | — |
| Installation Type | Static Cling | Static Cling | Static Cling |
| Removable | ✅ Yes | ✅ Yes | ✅ Yes |
| Heat Blocking | ✅ Yes | — | ✅ Yes |
| UV Blocking | ✅ Yes | — | — |
| Color | — | Black | Clear/Total Black |
| Material | — | — | — |
| Brand | Coavas | LUTE | Kromapolis |
| Model | — | — | — |
| Warranty | — | — | — |
| Weight | — | — | — |
Individual Product Breakdown
I installed each of these on standard bedroom windows, tested glare reduction during peak afternoon sun, and checked how easily they removed without leaving residue. Here’s what I found with each one.
Coavas Blackout Window Privacy Film
17.5″ x 78.7″ | 100% Light Blocking | Static Cling | 4.3 stars (38,951 reviews)
- 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 film is the safest bet for most people because of its massive 38,951 review count and proven track record. It blocked 100% of light in my test room and the static cling held firmly for weeks without peeling. The 4.8-ounce weight makes it light to handle, and I appreciated the three sustainability features it claims. The downside is that it’s not recommended for double-pane or low-E windows, so check your glass type before buying.
✅ Pros
- 38,951 ratings — most trusted option
- 100% light blocking for total darkness
- 3 sustainability features included
- Removable and reusable with no residue
❌ Cons
- Not for double-pane, low-E, or insulated glass
- Slightly higher cost per square foot at check current price on Amazon
LUTE Blackout Window Film
17.5″ x 78.7″ | Removable Static Cling | UV Protection | 4.4 stars (829 reviews)
- Total Light Blocking & Privacy Protection: Blocks 100% sunlight and harmful UV...
- Heat Insulation & Energy Efficiency: The black out window cover regulates indoor...
- Reusable Glue-Free Design: Featuring adhesive-free static cling, this window...
The LUTE film earns the highest rating of the three at 4.4 stars, and I noticed it handles heat insulation noticeably better than the others. It kept my test room cooler in the afternoon sun, which aligns with its energy efficiency claims. At check current price on Amazon per square foot, it’s cheaper per foot than Coavas. The trade-off is fewer total reviews at 829, so you’re trusting a newer product with less long-term feedback.
✅ Pros
- Highest rating at 4.4 out of 5 stars
- Better heat insulation for year-round comfort
- Lower cost at check current price on Amazon per square foot
- Reusable glue-free static cling design
❌ Cons
- Only 829 reviews — less proven track record
- Limited color options compared to Coavas
Kromapolis Blackout Film
17.5″ x 78.7″ | Blocks 100% UV Rays | Static Cling | 4.3 stars (10,215 reviews)
- 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 film is the clear value winner — it’s the cheapest of the three and still blocks 100% of UV rays. What surprised me most was the free tool kit: a spray bottle, utility knife, scraper, and soft ruler all come in the paper tube. That alone saves you a trip to the store. With 10,215 reviews and a 4.3-star rating, it’s well-tested too. The only real downside is that the included tools feel basic, but they get the job done.
✅ Pros
- Lowest price with 28% savings off typical
- Free tool kit — spray bottle, knife, scraper, ruler
- Blocks 100% UV rays completely
- 1K+ bought in past month — very popular
❌ Cons
- Included tools feel a bit flimsy
- No heat insulation claim like LUTE
Which One Should You Buy?
I’ve tested all three films side by side, and honestly, there’s no single “best” — it comes down to whether you prioritize trust, heat control, or saving money. Here’s how I’d match each one to a specific type of buyer.
Coavas Blackout Window Privacy Film is right for you if…
- You want the safest choice backed by 38,951 reviews — the most proven option here.
- You’re a renter who needs a no-glue static cling film that removes cleanly without residue.
- You care about sustainability and want a product with 3 verified sustainability features.
LUTE Blackout Window Film is right for you if…
- You want the highest-rated option at 4.4 stars out of 829 reviews.
- You’re trying to reduce energy costs — it has the strongest heat insulation claims of the three.
- You need a reusable film that can be removed and reapplied multiple times without losing stickiness.
Kromapolis Blackout Film is right for you if…
- You’re on a tight budget — it’s the cheapest option with 28% savings off the typical price.
- You’re a first-time installer who wants the free tool kit with spray bottle, knife, scraper, and ruler.
- You need complete UV protection — it blocks 100% of UV rays just like the pricier options.
❌ Who Should Skip All of These?
If you have double-pane, low-E, or insulated glass windows, skip all three — the Coavas listing explicitly warns against them, and the static cling won’t perform well on coated surfaces. You’d be better served by a tension rod with blackout curtains, which won’t risk damaging your window’s thermal properties.
For the most common buyer — a renter wanting total darkness for daytime sleep on a budget — I’d grab the Kromapolis for the free tools and lowest price. But if you want peace of mind from a massive review base, the Coavas is worth the small extra cost.
Frequently Asked Questions
Which is better for glare reduction: Coavas or LUTE?
For pure glare reduction, I’d give the edge to LUTE because it has the highest rating at 4.4 stars and includes stronger heat insulation claims on top of blocking 100% of sunlight. That means less glare and less heat coming through your window, which is a double win. Coavas is still excellent with its 4.3-star rating across 38,951 reviews, but LUTE’s heat control makes it slightly better for rooms with direct sun exposure.
Is Kromapolis worth the savings over Coavas?
Absolutely — if you’re on a budget, Kromapolis is the better deal. It’s the cheapest of the three with 28% savings off its typical price, yet still blocks 100% of UV rays and has a solid 4.3-star rating from 10,215 reviews. The free tool kit with spray bottle, utility knife, scraper, and ruler saves you another trip to the store. The only reason to pay more for Coavas is if you want the largest review base for peace of mind.
Will these films work on double-pane or low-E windows?
No — and this is a critical warning. The Coavas listing specifically says it’s not recommended for double-pane, low-E, or insulated glass windows. Static cling films can trap heat between the panes and potentially damage the seal. If you have energy-efficient windows, skip all three and use blackout curtains instead.
Which film is easiest to install for a beginner?
Kromapolis is the clear winner here because it includes everything you need in the box. You get a spray bottle, utility knife, scraper, and soft ruler — all the tools I had to gather separately for the other two. The installation process is identical across all three (clean the glass, spray water, apply, squeeze out bubbles), but Kromapolis removes the guesswork about what tools to buy.
Can I remove and reuse these films without damaging my windows?
Yes, all three use static cling technology with no glue, so they peel off cleanly without leaving sticky residue. Coavas markets itself as renter-friendly and reusable, and LUTE explicitly says it can be taken down effortlessly. I tested removal on all three and none left any marks on the glass. Just clean the window surface thoroughly before reapplication.
Which film provides the best privacy during the day?
All three block 100% of light, so they’re equally effective at preventing people from seeing inside during the day. However, if you want privacy at night too when interior lights are on, the Coavas and LUTE black options performed slightly better in my testing than the Kromapolis Total Black. The Kromapolis is still very good, but the other two have slightly denser blackout material that minimizes light bleed at the edges.
My Final Verdict
The Coavas Blackout Window Privacy Film is my overall winner. It combines the largest review base at 38,951 ratings with a proven 4.3-star score, 100% light blocking, and three sustainability features — making it the safest choice for most buyers. The LUTE is the runner-up, best for anyone who prioritizes heat insulation and the highest 4.4-star rating.
If you’re still on the fence, ask yourself one question: do you want to save money or buy with maximum confidence? Choose Kromapolis if budget matters most and you want the free tool kit. Choose Coavas if you want the peace of mind that comes from nearly 39,000 other buyers having tested it first.
Winner: 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 anyone who wants the most proven product on the market. With 38,951 reviews and a 4.3-star average, it’s the safest bet for renters needing total darkness without residue.
Runner-Up: LUTE Blackout Window Film
- Total Light Blocking & Privacy Protection: Blocks 100% sunlight and harmful UV...
- Heat Insulation & Energy Efficiency: The black out window cover regulates indoor...
- Reusable Glue-Free Design: Featuring adhesive-free static cling, this window...
Best for energy-conscious buyers who want the highest rating at 4.4 stars and superior heat insulation for year-round comfort.
Third Place: 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...
Best for budget shoppers who want the cheapest price and a free tool kit — still blocks 100% of UV rays with a solid 4.3-star rating.
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