FR and BTR drainage channels are used on roofs, terraces and balconies to quickly drain water from the surface and from areas where it accumulates to drainage layers.
An alternative way to finish the surface directly over the roof drains. It allows access to the drain and layers under the surface. It has longitudinal perforations, vertically adjustable, with a frame suitable for planting in gravel. Resistant to high loads. Made of galvanized steel. It is installed in the terrace paving.