Natural Cool

LACUNA Natural Cool Window Film combines safety and solar control, reinforcing windows against shattering while reducing solar heat gain. Designed for enhanced strength and resilience, it improves indoor comfort and helps lower energy costs by minimizing heat buildup.

This film also reduces glare and blocks harmful UV rays, protecting interior furnishings from fading and deterioration. Its natural tint maintains a balanced, well-lit environment, ensuring visual comfort without excessive brightness.

Measurements

Natural Cool 10 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 15%
Visible Light Reflected External: 49%
Visible Light Reflected Internal: 19%
Glare Reduction: 83%
Total Solar Energy Transmitted: 18%
Total Solar Energy Reflected External: 41%
Total Solar Energy Absorbed: 41%
Shading Coefficient (SC): 0,30
Solar Heat Gain Coefficient (SHGC): 0,26
U Factor: 0,94
UV Rejection: ≥99
Emissivity: 0,69
Light To Solar Gain: 0,51
Total Solar Energy Rejected (TSER): 72%
IR Rejection: 90%
Infrared Energy Rejection (IRER): 68%

Natural Cool 20 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 26%
Visible Light Reflected External: 29%
Visible Light Reflected Internal: 14%
Glare Reduction: 69%
Total Solar Energy Transmitted: 30%
Total Solar Energy Reflected External: 26%
Total Solar Energy Absorbed: 44%
Shading Coefficient (SC): 0,44
Solar Heat Gain Coefficient (SHGC): 0,37
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,72
Light To Solar Gain: 0,67
Total Solar Energy Rejected (TSER): 61%
IR Rejection: 80%
Infrared Energy Rejection (IRER): 55%

Natural Cool 35 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 35%
Visible Light Reflected External: 15%
Visible Light Reflected Internal: 20%
Glare Reduction: 58%
Total Solar Energy Transmitted: 34%
Total Solar Energy Reflected External: 15%
Total Solar Energy Absorbed: 51%
Shading Coefficient (SC): 0,50
Solar Heat Gain Coefficient (SHGC): 0,46
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,73
Light To Solar Gain: 0,80
Total Solar Energy Rejected (TSER): 56%
IR Rejection: 82%
Infrared Energy Rejection (IRER): 60%

Natural Cool 50 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 43%
Visible Light Reflected External: 14%
Visible Light Reflected Internal: 16%
Glare Reduction: 50%
Total Solar Energy Transmitted: 40%
Total Solar Energy Reflected External: 14%
Total Solar Energy Absorbed: 45%
Shading Coefficient (SC): 0,55
Solar Heat Gain Coefficient (SHGC): 0,50
U Factor: 0,95
UV Rejection: ≥99
Emissivity: 0,71
Light To Solar Gain: 0,86
Total Solar Energy Rejected (TSER): 51%
IR Rejection: 75%
Infrared Energy Rejection (IRER): 55%

Natural Cool 10 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 14%
Visible Light Reflected External: 49%
Visible Light Reflected Internal: 20%
Glare Reduction: 85%
Total Solar Energy Transmitted: 14%
Total Solar Energy Reflected External: 41%
Total Solar Energy Absorbed: 46%
Shading Coefficient (SC): 0,31
Solar Heat Gain Coefficient (SHGC): 0,27
U Factor: 0,94
UV Rejection: ≥99
Emissivity: 0,69
Light To Solar Gain: 0,52
Total Solar Energy Rejected (TSER): 73%
IR Rejection: 91%
Infrared Energy Rejection (IRER): 69%

Natural Cool 20 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 26%
Visible Light Reflected External: 29%
Visible Light Reflected Internal: 15%
Glare Reduction: 71%
Total Solar Energy Transmitted: 25%
Total Solar Energy Reflected External: 26%
Total Solar Energy Absorbed: 49%
Shading Coefficient (SC): 0,45
Solar Heat Gain Coefficient (SHGC): 0,39
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,72
Light To Solar Gain: 0,65
Total Solar Energy Rejected (TSER): 61%
IR Rejection: 82%
Infrared Energy Rejection (IRER): 55%

Natural Cool 35 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 36%
Visible Light Reflected External: 15%
Visible Light Reflected Internal: 22%
Glare Reduction: 60%
Total Solar Energy Transmitted: 28%
Total Solar Energy Reflected External: 15%
Total Solar Energy Absorbed: 57%
Shading Coefficient (SC): 0,51
Solar Heat Gain Coefficient (SHGC): 0,45
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,73
Light To Solar Gain: 0,80
Total Solar Energy Rejected (TSER): 55%
IR Rejection: 82%
Infrared Energy Rejection (IRER): 59%

Natural Cool 50 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 43%
Visible Light Reflected External: 14%
Visible Light Reflected Internal: 17%
Glare Reduction: 51%
Total Solar Energy Transmitted: 34%
Total Solar Energy Reflected External: 14%
Total Solar Energy Absorbed: 52%
Shading Coefficient (SC): 0,57
Solar Heat Gain Coefficient (SHGC): 0,49
U Factor: 0,95
UV Rejection: ≥99
Emissivity: 0,71
Light To Solar Gain: 0,88
Total Solar Energy Rejected (TSER): 51%
IR Rejection: 76%
Infrared Energy Rejection (IRER): 55%

Benefits

Natural Look
Advanced Safety Capabilities
Aesthetic Enhancement
Energy Cost Reduction
Multi-Layered Nano Technology
Maximum Protection
UV Rejection

Natural Cool

LACUNA Natural Cool Window Film combines safety and solar control, reinforcing windows against shattering while reducing solar heat gain. Designed for enhanced strength and resilience, it improves indoor comfort and helps lower energy costs by minimizing heat buildup.

This film also reduces glare and blocks harmful UV rays, protecting interior furnishings from fading and deterioration. Its natural tint maintains a balanced, well-lit environment, ensuring visual comfort without excessive brightness.

Measurements

Natural Cool 10 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 15%
Visible Light Reflected External: 49%
Visible Light Reflected Internal: 19%
Glare Reduction: 83%
Total Solar Energy Transmitted: 18%
Total Solar Energy Reflected External: 41%
Total Solar Energy Absorbed: 41%
Shading Coefficient (SC): 0,30
Solar Heat Gain Coefficient (SHGC): 0,26
U Factor: 0,94
UV Rejection: ≥99
Emissivity: 0,69
Light To Solar Gain: 0,51
Total Solar Energy Rejected (TSER): 72%
IR Rejection: 90%
Infrared Energy Rejection (IRER): 68%

Natural Cool 20 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 26%
Visible Light Reflected External: 29%
Visible Light Reflected Internal: 14%
Glare Reduction: 69%
Total Solar Energy Transmitted: 30%
Total Solar Energy Reflected External: 26%
Total Solar Energy Absorbed: 44%
Shading Coefficient (SC): 0,44
Solar Heat Gain Coefficient (SHGC): 0,37
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,72
Light To Solar Gain: 0,67
Total Solar Energy Rejected (TSER): 61%
IR Rejection: 80%
Infrared Energy Rejection (IRER): 55%

Natural Cool 35 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 35%
Visible Light Reflected External: 15%
Visible Light Reflected Internal: 20%
Glare Reduction: 58%
Total Solar Energy Transmitted: 34%
Total Solar Energy Reflected External: 15%
Total Solar Energy Absorbed: 51%
Shading Coefficient (SC): 0,50
Solar Heat Gain Coefficient (SHGC): 0,46
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,73
Light To Solar Gain: 0,80
Total Solar Energy Rejected (TSER): 56%
IR Rejection: 82%
Infrared Energy Rejection (IRER): 60%

Natural Cool 50 - 4 Mil

Microns: 100
Visible Light Transmitted (VLT): 43%
Visible Light Reflected External: 14%
Visible Light Reflected Internal: 16%
Glare Reduction: 50%
Total Solar Energy Transmitted: 40%
Total Solar Energy Reflected External: 14%
Total Solar Energy Absorbed: 45%
Shading Coefficient (SC): 0,55
Solar Heat Gain Coefficient (SHGC): 0,50
U Factor: 0,95
UV Rejection: ≥99
Emissivity: 0,71
Light To Solar Gain: 0,86
Total Solar Energy Rejected (TSER): 51%
IR Rejection: 75%
Infrared Energy Rejection (IRER): 55%

Natural Cool 10 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 14%
Visible Light Reflected External: 49%
Visible Light Reflected Internal: 20%
Glare Reduction: 85%
Total Solar Energy Transmitted: 14%
Total Solar Energy Reflected External: 41%
Total Solar Energy Absorbed: 46%
Shading Coefficient (SC): 0,31
Solar Heat Gain Coefficient (SHGC): 0,27
U Factor: 0,94
UV Rejection: ≥99
Emissivity: 0,69
Light To Solar Gain: 0,52
Total Solar Energy Rejected (TSER): 73%
IR Rejection: 91%
Infrared Energy Rejection (IRER): 69%

Natural Cool 20 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 26%
Visible Light Reflected External: 29%
Visible Light Reflected Internal: 15%
Glare Reduction: 71%
Total Solar Energy Transmitted: 25%
Total Solar Energy Reflected External: 26%
Total Solar Energy Absorbed: 49%
Shading Coefficient (SC): 0,45
Solar Heat Gain Coefficient (SHGC): 0,39
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,72
Light To Solar Gain: 0,65
Total Solar Energy Rejected (TSER): 61%
IR Rejection: 82%
Infrared Energy Rejection (IRER): 55%

Natural Cool 35 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 36%
Visible Light Reflected External: 15%
Visible Light Reflected Internal: 22%
Glare Reduction: 60%
Total Solar Energy Transmitted: 28%
Total Solar Energy Reflected External: 15%
Total Solar Energy Absorbed: 57%
Shading Coefficient (SC): 0,51
Solar Heat Gain Coefficient (SHGC): 0,45
U Factor: 0,96
UV Rejection: ≥99
Emissivity: 0,73
Light To Solar Gain: 0,80
Total Solar Energy Rejected (TSER): 55%
IR Rejection: 82%
Infrared Energy Rejection (IRER): 59%

Natural Cool 50 - 7 Mil

Microns: 180
Visible Light Transmitted (VLT): 43%
Visible Light Reflected External: 14%
Visible Light Reflected Internal: 17%
Glare Reduction: 51%
Total Solar Energy Transmitted: 34%
Total Solar Energy Reflected External: 14%
Total Solar Energy Absorbed: 52%
Shading Coefficient (SC): 0,57
Solar Heat Gain Coefficient (SHGC): 0,49
U Factor: 0,95
UV Rejection: ≥99
Emissivity: 0,71
Light To Solar Gain: 0,88
Total Solar Energy Rejected (TSER): 51%
IR Rejection: 76%
Infrared Energy Rejection (IRER): 55%

Benefits

Natural Look
Advanced Safety Capabilities
Aesthetic Enhancement
Energy Cost Reduction
Multi-Layered Nano Technology
Maximum Protection
UV Rejection

Frequently Asked Questions

What is an edge retention system, and why is it important?

An edge retention system (ERS) reinforces film adhesion to the frame, preventing the entire glass pane from being dislodged during:

Explosions
Forced entry attempts
Hurricane-force winds

What is the tensile strength of high-performance security films?

Entry-level security films: ~25,000 psi tensile strength.
Blast-rated films: Up to 33,000+ psi, preventing penetration under extreme force.

What types of security films are rated for bomb-blast resistance?

8-12 mil films: Reduces injuries from flying glass fragments.
15+ mil films: Used for embassies, airports, and military buildings, offering greater fragment retention.

Can security window films prevent burglaries and break-ins?

Yes! While security films don’t make glass unbreakable, they hold shattered pieces in place, making forced entry significantly harder and delaying intruders.

How strong are security window films?

Security films can withstand hurricane-force winds, accidental impact, and burglar attempts, delaying forced entry by up to 5 minutes. Advanced versions meet GSA and ASTM standards for blast mitigation.

Are security films tested against real explosion scenarios?

Yes! Films meeting ASTM F1642 or GSA TS01-2003 have been tested against blast pressures and debris impact in military, embassy, and high-risk zones.

What are the different types of edge retention systems?

Mechanical Anchors: Metal clamps securing the film to the window frame.
Wet Glaze Adhesives: Thick, flexible silicone sealants that bond the film to the frame for blast resistance.

Are security films fire-rated?

Yes, some films meet UL 10B fire standards, slowing down flame spread and preventing glass from exploding under heat.

Can security window films be installed over existing tinted or decorative films?

Yes, but performance depends on layering compatibility and proper adhesion. It’s best to apply security film first, then decorative overlays.

How does tear resistance affect security film performance?

Low tear resistance means glass may separate despite staying intact.
High tear-resistant films ensure longer resistance to forced entry, up to 4-6 minutes under assault.

Can security films be installed on frameless glass walls?

Yes, but special retention adhesives are required for full effectiveness, ensuring the film remains bonded under impact.

How much force can security films withstand in riot conditions?

High-security films tested under ASTM F1233 & EN 356 standards resist repeated blunt-force attacks from crowbars, bats, and bricks for over 4-6 minutes.

How do anti-graffiti security films work?

These films use sacrificial coatings, allowing easy removal of:

Spray paint
Acid etching
Scratches
They can be peeled off without affecting the original glass.

Are there fire-resistant security window films?

Yes! Flame-retardant security films slow down flame spread and heat transfer, helping protect glass from cracking under high temperatures.