Whats the difference between polyurethane insulation and polystyrene insulation?
Portes Garex uses polyurethane insulation to provide a superior R-16 thermal resistance rating (RSI: 2.8). Polyurethane is a type of foam that fills every nook of the space in which it is blown, forming a perfect seal against the weather. Polystyrene (styrofoam) cannot offer the same weatherseal protection, owing to the gap that exists between the polystyrene core and the metal panel skin. Our light and robust door panels comprise an aluminum or steel skin and a pressure-injected polyurethane insulation core.
