A "Pergola-Rain" louver roof offers besides the sun protection function, also a basic rain protection. This is achieved by using louvers with an integrated small gutter, and to install them with a small slope. With that the water will float in a certain direction. Louver types like the 88-E, 107E, 117-E, en de 155-E lameltype can be used for that. Please contact us for a free advice.