Good Quality Roof Garden Drainage Board HDPE Dimple Membrane Composite Drainage Waterproof Board With Single Side Dimple Drain

A composite drainage board is a type of building material used in construction to manage water drainage and prevent moisture from accumulating on building foundations or roofs. It typically consists of a high-density polyethylene (HDPE) core that is sandwiched between two geotextile filter layers.

The purpose of the composite drainage board is to provide a channel for water to flow away from a structure and prevent water from pooling and causing damage. The geotextile layers on both sides of the HDPE core filter out fine particles and prevent clogging of the drainage board, allowing for efficient water flow.

Composite drainage boards are typically used in applications where the soil is unstable or has poor drainage, such as on green roofs, plaza decks, and basement walls. They are also commonly used in civil engineering and infrastructure projects, such as road and railway embankments, to prevent water buildup and soil erosion.

Overall, composite drainage boards can provide effective and efficient solutions to water management challenges in construction and infrastructure projects.