Twin‑skin greenhouse covers create a sealed air layer between two polyethylene sheets, forming an effective insulating barrier that delivers significantly higher thermal performance than glass. This system helps maintain stable internal temperatures throughout the year and can dramatically reduce heating costs.
Thermal imaging consistently shows that twin‑skin structures achieve the greatest temperature differential between inside and outside conditions, outperforming both glass and single‑layer plastic in heat retention. The trapped air layer reduces thermal conductivity and slows heat loss, keeping the greenhouse warmer during cold periods and improving overall energy efficiency.
Redpath supplies a complete range of Twin‑skin components and accessories designed to insulate and protect your greenhouse to the highest standard.
Twin‑skin systems only work when an Inflation Fan continuously pumps air into the space between the two polyethylene layers. Redpath specifically designed Inflation Fans maintain a stable air cushion, which is what provides the superior insulation. This air layer is what allows twin‑skin plastic to retain more heat than glass or single‑skin plastic.
A properly inflated twin‑skin cover becomes firmer and more resistant to wind movement, preventing the plastic from flapping. This reduces wear, extends film life, and protects the greenhouse frame.
Twin‑skin systems require a flexible, ribbed pipe used to carry air from the blower to the space between the two plastic layers.
Air transfer flanges secure this pipe where it enters the twin‑skin cavity and consist of a two-piece pipe cone and locking ring to create a tight, sealed connection.
