Green-tek Aluminum Tape - 1in x 150ft - For Polycarbonate Sheet Sealing

Permanent Foil Seal for the Top Ridge-Edge Channels of Polycarbonate Glazing

Left open, the cellular channels at the top of a twinwall polycarbonate sheet slowly fill with dust, pollen, and moisture, clouding the panel from the inside over years of service. Green-Tek Aluminum Tape is applied to that upper ridge edge before installation, creating a permanent foil barrier that keeps the channels clean and the panel's clarity intact for the life of the glazing.

The 1in x 150ft roll covers multiple panels in a single continuous piece, making it an efficient, essential component of any new-build or re-glazing project using 8mm twinwall polycarbonate.

Key Features & Benefits

• Top-Edge Sealing: Permanently seals channel openings at the ridge against dust, debris, insects, and moisture.
• UV-Stable Foil Construction: Aluminum foil resists degradation for the service life of the polycarbonate installation.
• 1in x 150ft Roll: Enough tape to seal multiple panels from one continuous roll.
• Essential Installation Step: Correct top-edge sealing is required to preserve long-term panel clarity and performance.

Who Should Use This

Anyone installing Green-Tek ThermaGlas twinwall or multiwall polycarbonate needs this tape for the ridge-edge sealing step, including greenhouse builders, contractors, and growers handling new construction or re-glazing.

About Green-Tek, Inc.

Green-Tek, Inc., headquartered in Beloit, Wisconsin, is the leading converter, fabricator, and master distributor of greenhouse coverings and components, supplying this sealing tape alongside its ThermaGlas polycarbonate and Shade-Rite shade cloth lines.

Frequently Asked Questions

Why does the top edge of polycarbonate sheets need to be sealed?

The cellular channels in twinwall polycarbonate are open at the cut ends. Without sealing, dust, pollen, insects, and moisture enter the channels over time, reducing light transmission and potentially damaging the sheet structure. Aluminum tape at the top edge permanently closes these openings for the full installation lifetime.

How do I apply this tape correctly?

Cut the sheet to length, then apply the tape centered over the open channel ends at the top edge, pressing firmly for full adhesion across every channel opening. Install the sheet with this sealed edge oriented toward the ridge of the structure.

Should I use this same tape on the bottom edge too?

No. The bottom (eave) edge needs a ventilated tape or U-Profile that lets condensate drain out of the channels; sealing it with this solid tape traps moisture inside and promotes algae growth. Reserve this solid tape for the top ridge edge only.

When would I need a wider tape than this 1in roll?

For wider or narrower panel profiles than standard 8mm twinwall, Green-Tek also offers a 2in aluminum tape for applications requiring broader channel coverage. Check your panel's channel width before ordering to confirm which width is the correct match.