Import Green Roof Drainage Board — Buy in Bulk from Supplier in China

The green roof drainage board from Shandong Tianhai New Materials Engineering Co., Ltd is manufactured from high-density polyethylene (HDPE), a material selected for its high impact resistance and long-term pressure endurance. The board is engineered to withstand prolonged static and dynamic loads, including the weight of concrete slabs, construction traffic, and pouring impacts, without deforming. This structural integrity ensures drainage channels remain unobstructed over time, preserving the system’s hydraulic capacity.

A non-woven geotextile filter layer is integrated into the design to prevent clogging from backfill particles or concrete debris, maintaining consistent drainage performance. The board combines waterproofing and drainage functions in a single layer, offering a more efficient and cost-effective alternative to traditional drainage media such as gravel or pottery particles. Typical industry standards for HDPE drainage boards include compressive strengths of 200-500 kPa, with dimensional stability across a temperature range of -40°C to 80°C.

Primary applications include roof gardens, green roofs on outdoor garages, retaining walls, basements, tunnels, subways, and underground infrastructure. The product is also suitable for slope stabilisation and expressway roadbeds, where reliable drainage is critical to prevent water accumulation and structural damage. Buyers in civil engineering and landscape architecture sectors source these boards for projects requiring durable, low-maintenance drainage solutions.

Shandong Tianhai New Materials Engineering Co., Ltd is based in the Diaozhen Chemical Industrial Park of Zha, Jinan, Shandong Province, China. The company specialises in the production of HDPE-based drainage and protection materials, with a focus on solutions for civil engineering and green infrastructure projects.

The supplier’s listing emphasises the technical performance of its drainage boards, including impact resistance and long-term load-bearing capabilities. While the profile does not provide details on certifications, production capacity, or export history, the product description aligns with industry standards for HDPE drainage systems in demanding applications.