Fiberglass vs. HDPE Mortar Tubes | Which One Should You Use?


2 min read

Fiberglass vs. HDPE Mortar Tubes | Which One Should You Use?

🔍 Fiberglass vs. HDPE: What’s the Best Tube for Your Mortar Rack?

When it comes to setting up a safe and effective mortar rack for aerial shells, the type of launch tube you use matters. Two materials dominate the firework world: Fiberglass and HDPE (High-Density Polyethylene). But which one is right for you?

Let’s break down the differences and help you make an informed, explosive choice.


🟠 What Is HDPE?

HDPE (High-Density Polyethylene) is a type of strong plastic used in professional-grade firework mortar tubes.

Why Choose HDPE:

  • ✅ Extremely durable
  • ✅ Shatter-resistant — flexes instead of breaking
  • ✅ Commonly used by professionals
  • ✅ Ideal for high-powered shells

Best For: Heavy-use racks, big shells (up to 3”), and long-term setups.


🔵 What Is Fiberglass?

Fiberglass mortar tubes are made from woven glass fibers and resin. They’re popular for casual and consumer use.

Why Choose Fiberglass:

  • ✅ Lightweight and portable
  • ✅ Affordable and widely available
  • ✅ Safer than PVC — but not as strong as HDPE
  • ✅ Often used in prefab racks or included in kits

Best For: Seasonal shows, light to moderate shell use.


⚖️ Key Differences at a Glance

Feature HDPE Fiberglass
Strength Heavy-duty, very strong Moderate durability
Shatter Safety Bends under pressure May crack (splinters safely)
Weight Heavier Lighter
Reusability Excellent Good (with care)
Cost Higher Lower
Pro Use Industry standard Hobbyist-friendly

⚠️ What NOT to Use: PVC Tubes

PVC may seem tempting because it’s cheap and available — but NEVER use PVC for launching fireworks. If it fails, it shatters like glass and sends sharp shards flying. Always stick with HDPE or fiberglass for safety.


🧨 So Which One Should You Choose?

Go with HDPE if:

  • You want the safest, longest-lasting solution
  • You're launching big shells or running multiple shows

Go with Fiberglass if:

  • You want a lightweight, affordable setup
  • You're building a temporary or travel-friendly rack

🚀 Ready to Build Your Mortar Rack?

👉 Shop HDPE & Fiberglass Tubes
👉 Check Out Our 12-Shot Racks & Kits
👉 Read: How to Build a DIY Mortar Rack


Elevated Fireworks™ — Helping You Launch Safer, Bigger, and Better.


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