The conventional practice of basement roof and garage roof drainage system is to set geotextile filter layer directly on the concrete protective layer, and then lay planting soil on it. A plastic drainage board is set between the geotextile filter layer and the concrete protective layer as the drainage layer.

Plastic drainage board has the following characteristics:

(1) Good water conduction and drainage: the concave-convex hollow rib structure of the drainage board structure can quickly and effectively drain rainwater, greatly reducing or even eliminating the hydrostatic pressure of the waterproof layer. Waterproof effect.

(2) Good waterproof performance: Polyvinyl chloride (PVC) itself is a good waterproof material. By adopting a reliable connection method, the waterproof and drainage board becomes a good auxiliary waterproof material.

(3) Good protection: It can effectively protect structures and waterproof layers, and resist various acids and alkalis in the soil and root thorns of plants. When backfilling the basement roof, the building and waterproofing can be protected from damage.

(4) It has good sound insulation and ventilation and moisture-proof functions: Polyvinyl chloride (PVC) plastic drainage board drainage board can effectively reduce the indoor noise of 14 decibels, 500HZ, and has obvious noise reduction and sound insulation function.

The main parts of plastic drainage board are: garage roof greening, roof garden, sloping roof greening, football field and other soil-covered base layers.

Construction process: base cleaning → waterproofing membrane construction → waterproof protective layer → plastic drainage board laying → laying geotextile → covering soil