The short answer
Compare fiberglass ballistic panels and LytArmor™ UHMWPE to see how weight, thickness, strength, flexibility, and long-term value impact modern ballistic protection projects.
In this article
Below is a clear breakdown of how these two materials compare, and why more architects and security professionals are upgrading to LytArmor™.
1. Weight: LytArmor is dramatically lighter
One of the biggest advantages of LytArmor™ is weight reduction.
| Material | UL 752 Level 8 Weight | Difference |
|---|---|---|
| Fiberglass ballistic panel | 14.9 ± lbs per sq. ft. | Heavy |
| LytArmor™ UHMWPE | ~4 lbs per sq. ft. | Up to 75% lighter |
This massive reduction in weight means:
- Easier handling for installers
- Less structural load
- Faster installation
- Lower labor costs
2. Thickness: LytArmor gives you higher protection in a slimmer profile
| Material | UL 752 Level 8 Thickness |
|---|---|
| Fiberglass | 1-7/16" thick |
| LytArmor™ UHMWPE | 3/4" thick |
A thinner panel means:
- More design flexibility
- Easier integration into tight spaces
- Cleaner architectural lines
3. Strength: LytArmor is 15× stronger than Kevlar®
This is where UHMWPE technology truly shines.
LytArmor™ ballistic panels are 15 times stronger than Kevlar®, giving them unmatched stopping power and impact performance at extremely low weight.
This superior strength provides:
- Higher ballistic resistance
- Better multi-hit performance
- Increased energy absorption
- Longer service life
Fiberglass simply cannot match this performance profile.
4. Rigidity vs. Flexibility
Both materials offer strong ballistic protection, but they behave very differently.
Fiberglass Panels
- Completely rigid
- Cannot bend
- Brittle under extreme impact
- May splinter if compromised
LytArmor™ UHMWPE Panels
- Naturally flexible, even at high ballistic levels
- No cracking or splintering
- Safer, easier installation
- Better impact dispersion
NEW: LytArmor™ Flex Series
In addition to standard rigid panels, LytArmor™ offers a Flex Series, engineered specifically for architectural creativity and curved protection needs.
The LytArmor™ Flex Series can:
- Bend to virtually any radius
- Match curved walls, counters, columns, or specialty millwork
- Provide continuous ballistic protection even on non-linear designs
This feature gives designers the freedom to create curved ballistic enclosures without seams, cuts, or performance loss-something that fiberglass cannot achieve under any circumstances.
5. Cost Difference
Fiberglass is the less expensive option per square foot.
LytArmor™ comes at a higher price point, but provides long-term value through:
- Lower installation costs
- Reduced structural reinforcement requirements
- Longer material durability
- Superior ballistic performance
- Design flexibility (especially with Flex Series)
When factoring total installed cost and longevity, UHMWPE often wins.
Final Thoughts
Fiberglass ballistic panels have been a trusted solution for decades-but LytArmor™ UHMWPE is redefining what modern ballistic protection looks like.
With advantages such as:
- 15× stronger than Kevlar®
- 75% lighter than fiberglass
- Half the thickness
- Flexible, splinter-free performance
- Available Flex Series capable of bending to nearly any radius
- Higher strength-to-weight efficiency than any traditional ballistic panel
LytArmor™ delivers engineering, safety, and design freedom that fiberglass simply cannot match.
FAQ
1. What is the main difference between fiberglass ballistic panels and LytArmor™ UHMWPE panels?
Fiberglass panels are thick, heavy, and fully rigid, while LytArmor™ UHMWPE is significantly lighter, thinner, and naturally flexible. LytArmor™ also delivers far higher ballistic performance, including being 15× stronger than Kevlar®, which fiberglass cannot match.
2. How much lighter is LytArmor™ compared to fiberglass?
For UL 752 Level 8:
- Fiberglass: ~14.9 lbs per sq. ft.
- LytArmor™: ~4 lbs per sq. ft.
That makes LytArmor™ up to 75% lighter, reducing installation time and structural load.
3. How do the two materials compare in thickness?
- Fiberglass Level 8: 1-7/16" thick
- LytArmor™ Level 8: 3/4" thick
LytArmor™ provides the same ballistic rating at half the thickness, making it ideal for tighter wall systems and architectural designs.
4. Is LytArmor™ stronger than Kevlar®?
Yes. LytArmor™ UHMWPE is 15 times stronger than Kevlar® in tensile strength, giving it unmatched energy absorption and multi-hit performance.
5. Can fiberglass bend or curve for custom applications?
No. Fiberglass ballistic panels are completely rigid and cannot bend or conform to radius shapes.
6. Does LytArmor™ bend for curved walls or architectural features?
Yes. The LytArmor™ Flex Series is engineered to bend to almost any radius, allowing architects to create curved ballistic walls, counters, columns, or custom millwork while maintaining full ballistic integrity.
7. Is fiberglass or LytArmor™ easier to install?
LytArmor™ is dramatically easier to install because it’s:
- 75% lighter
- Half the thickness
- Flexible
- Splinter-free (unlike fiberglass, which can shed irritant fibers)
Installers handle LytArmor™ more safely and quickly, with fewer crew members required.
8. Which option is more cost-effective?
Fiberglass is less expensive per square foot, but LytArmor™ offers greater long-term value due to:
- Easier installation
- Reduced structural reinforcement
- Superior ballistic strength
- Lighter weight
- Longer service life
In many projects, total installed cost is lower with LytArmor™ despite higher material pricing.
9. What environments benefit most from LytArmor™ UHMWPE?
LytArmor™ is ideal for:
- High-security facilities
- Schools and government buildings
- Sensitive infrastructure
- Panic rooms and safe rooms
- Curved architectural elements
- Projects requiring lightweight, ultra-strong ballistic protection
10. Does LytArmor™ meet UL 752 ballistic standards?
Yes. LytArmor™ is engineered and certified to meet ballistic ratings up to UL 752 Level 8, providing the same or greater ballistic protection as traditional fiberglass-but in a much lighter, thinner, and stronger panel.
