Polycarbonate greenhouses are primarily very reliable. Their metal frame is usually galvanized, which makes it resistant to corrosion. You can still choose which polycarbonate is better for the greenhouse, but in general, the cellular polycarbonate itself, which covers the steel profile, is durable and hard, it is not characteristic of sagging or rupture, as is the case with a conventional film. He lets light rays well through himself, holds heat perfectly when it is cold, and, conversely, in the heat inside the temperature will not be too high.