
Li Li
March 14, 2025
The Differences Between Twin Wall, Solid PC, and Single-Layer PC Sheets
When selecting polycarbonate (PC) sheets, three common types are Twin Wall (double-layer hollow sheets), Solid PC (solid sheets), and Single-Layer PC sheets. Each has distinct characteristics and is suited for different applications. This guide provides a detailed comparison to help determine the best option for your project.
1️⃣ Twin Wall Polycarbonate Sheets
Structure: Composed of two parallel layers supported by internal ribs, creating a hollow, multi-channel design. Key Features: ✅ Lightweight & Easy to Install – The hollow structure makes it lighter and easier to handle than solid sheets. ✅ Excellent Thermal Insulation – Reduces heat loss and helps maintain a stable indoor temperature, making it ideal for greenhouses, skylights, and roofing. ✅ Durable & Weather-Resistant – Offers high impact resistance and often comes with a UV protection layer, ensuring long-lasting performance even in harsh weather conditions. ✅ Cost-Effective – More affordable than solid sheets while still providing good strength and insulation. Applications: 🌿 Greenhouses | ☀️ Sunrooms | 🏡 Roofing | 🏢 Partitions
2️⃣ Solid Polycarbonate Sheets
Structure: A single, thick layer of solid polycarbonate without any hollow structure. Key Features: ✅ High Impact Strength – Extremely durable and widely used in security and protective applications. ✅ Exceptional Transparency – Offers optical clarity close to glass but is lighter and more impact-resistant. ✅ Weather-Resistant – Can be coated with a UV protection layer to prevent yellowing and degradation, making it suitable for long-term outdoor use. ✅ Heavier Weight – Requires a more robust support structure, making it more suited for fixed installations. Applications: 🏢 Security windows | 🛡️ Bullet-resistant barriers | 🏭 Machine guards | 🌞 Transparent roofing
3️⃣ Single-Layer Polycarbonate Sheets
Structure: A thin, single-layer polycarbonate sheet, making it the lightest option among the three. Key Features: ✅ Lightweight & Easy to Cut – Can be easily processed and installed, making it ideal for projects requiring quick customization. ✅ Flexible – Can be bent or rolled, allowing for creative and curved designs. ✅ Good Light Transmission – Offers high transparency, though it has lower strength and insulation compared to Twin Wall and Solid PC sheets. ✅ Cost-Effective – The most budget-friendly option, suitable for applications where high strength is not a priority. Applications: 📌 Signage | 🛡️ Protective covers | 🏡 Lightweight roofing | 🎨 DIY projects