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

Can security films be applied to old or fragile windows?

Yes! Security films reinforce older windows, preventing breakage and shattering, but edge-retention systems may be needed for extra durability.

How do security films perform in controlled blast tests?

In ASTM F1642 & GSA testing, properly installed films reduce glass fragmentation by up to 92%, minimizing casualties in bomb explosions.

Will security window films make my windows look different?

Clear security films are nearly invisible, while tinted versions add privacy and solar control.

Can window shutters replace security films?

No, shutters are removable and vulnerable to forced entry, while security films remain permanently bonded to glass.

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.

What are safety and security window films, and how do they work?

Safety and security window films are multi-layered, high-tensile polyester films applied to glass surfaces to reinforce windows against breakage, forced entry, and impacts. They hold shattered glass together, reducing injury risks, property damage, and intrusion attempts.

Can security films protect against bomb blasts?

Yes, GSA-rated blast-resistant security films absorb shockwaves and reduce flying glass debris, minimizing injuries.

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.

Do security window films protect against extreme heat and sun damage?

Yes! Many security films include solar control layers, reducing heat buildup and UV exposure inside buildings.

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.

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.

How much time does security film add to a break-in attempt?

Security films can delay entry by 3-5 minutes, which can be enough time for security alerts or law enforcement response.

Do security window films work on all types of glass?

Yes, but the effectiveness depends on glass thickness, type (tempered, laminated, annealed), and whether an edge retention system is used for extra reinforcement.

What materials are used in high-performance security window films?

Security films are made from multi-layered polyester (PET) with proprietary coatings, including:

Nano-ceramic layers for heat rejection and durability.
UV-stabilized adhesives for long-lasting adhesion.
Optically clear polyurethane coatings to enhance visibility and shatter resistance.
Acrylic pressure-sensitive adhesives (PSA) for extreme bonding with glass surfaces.