Green-tek ThermaGlas Twinwall Polycarbonate Sheet | 8mm - 71.25in x 15ft - White/Black/White

Commercial-Grade Twinwall Polycarbonate Glazing, 8mm

Greenhouse glazing has to balance light transmission, insulation, and structural weight without compromising any of the three. Green-tek ThermaGlas Twinwall Polycarbonate is engineered for commercial greenhouse applications, combining 99.5% UV protection with confirmed thermal performance and a 10-year limited warranty.

8mm, 71.25in x 15ft, White/Black/White, R-1.72 / U-0.58, 10mm rib spacing.

Key Features & Benefits

• 8mm twinwall polycarbonate, R-Factor 1.72 / U-Factor 0.58 — manufacturer-confirmed thermal performance figures for this thickness.
• 99.5% UV protection via co-extruded layer — shields plants and the panel itself from UV degradation.
• 10-year limited warranty — backs the panel's long-term durability.
• Anti-condensation coating on the underside — prevents drip onto plants below.

Who Should Use Green-tek ThermaGlas Twinwall Polycarbonate

This fits commercial greenhouse builders and garden center operators who need durable, UV-protective glazing with confirmed insulation performance backed by a long warranty.

About Green-tek ThermaGlas Twinwall Polycarbonate

ThermaGlas Twinwall Polycarbonate is part of Green-tek's greenhouse covering catalog, a line built around commercial-grade materials engineered for structural durability and light management.

Frequently Asked Questions

How does this panel's R-Factor and U-Factor compare across Green-tek's line?

This 8mm panel carries an R-Factor of 1.72 and U-Factor of 0.58, figures that fall within Green-tek's confirmed range across its ThermaGlas thickness options (roughly R-1.49 to R-1.89 depending on panel thickness). Thicker panels generally trade some light transmission for better insulation.

What keeps this panel from dripping condensation onto plants?

A specialized coating on the underside of the panel is designed to eliminate condensation dripping, keeping moisture from collecting and falling onto the crop below. That coating is part of what distinguishes a greenhouse-grade panel from a basic polycarbonate sheet.

How durable is this panel against impact?

It's built as a shatterproof polycarbonate with an integrated UV-resistant co-extruded layer, and Green-tek backs it with a 10-year limited warranty. That combination is meant to hold up to years of outdoor greenhouse exposure without cracking or yellowing.

Does the multiwall design affect how the greenhouse is built?

Yes, the multiwall structure is lightweight enough to reduce the need for extensive supporting structures compared to heavier glazing options, which can lower the overall cost of a greenhouse build. That weight savings is in addition to, not instead of, its thermal performance.