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
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