Twinwall Sheets

Twinwall sheets are lightweight, rigid plastic panels made with a two-layer (or multi-layer) structure connected by internal ribs. This design creates a series of hollow channels—kind of like a plastic version of corrugated cardboard, but much stronger and weather-resistant.

What they’re made of

Most twinwall sheets are made from polycarbonate or polypropylene:

• Polycarbonate twinwall → very strong, impact-resistant, often used for roofing or greenhouses
• Polypropylene twinwall → lighter and cheaper, often used for signs, packaging, or temporary barriers

Key features

• Hollow core structure: The internal channels trap air, providing insulation
• Lightweight: Much lighter than solid plastic or glass
• Strong and durable: Especially polycarbonate versions, which can withstand impacts and harsh weather
• Translucent: Allows light through while diffusing it (not fully transparent)
• Weather-resistant: Many sheets include UV protection coatings
• Easy to cut and install: Can be shaped with basic tools

Common uses

• Greenhouses and garden cloches
• Roofing panels (patios, pergolas, carports)
• Skylights
• Signage and display boards
• Protective barriers or partitions

Thickness options

They typically come in different thicknesses (e.g., 4mm, 6mm, 10mm, 16mm), where:

• Thicker sheets = better insulation and strength
• Thinner sheets = lighter and more flexible

Why people choose twinwall

They offer a balance between strength, insulation, light transmission, and cost, making them a popular alternative to glass or solid plastic sheets.

For more information or to purchase today please call us: 1-604-533-4055 press 1 for Sales