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After the construction of the waterproof layer and its protective layer is completed, start laying the drainage board. Require the slope of grassroots drainage to meet a range of 2 ‰ to 5 ‰;
2. Lay the drainage board with the cup shaped mouth facing upwards and the teeth interlocked;
3. Cover the drainage board with geotextile, overlapping 10-20cm to prevent mud and water from passing through the geotextile, clogging the water storage and drainage system, causing poor drainage and reduced water storage capacity;
4. Lay 10-20mm medium coarse sand on the geotextile to form a permeable filter layer, which can prevent the loss of planting soil;
5. Cover with appropriate thickness of planting soil.
6. It is necessary to ensure the protection of finished drainage boards. After the installation of the drainage board, it should not be allowed to directly push hand carts on the drainage board. When transporting materials, wooden boards and horse paths should be laid. Ensure that the soil is filled as soon as it is laid.
Texas Sentai Environmental Protection Technology Co., Ltd. covers an area of 50 acres, with nearly 100 employees and more than 50 professional and technical personnel. We are an environmental protection technology oriented enterprise mainly engaged in the production of a series of new geosynthetic materials, specializing in the design and research and development of geosynthetic materials application, specialized production and manufacturing, construction design services, and system solution services for infrastructure construction projects such as transportation, water conservancy, environmental protection, ecological restoration, environmental governance, municipal construction, and animal husbandry. Our main products include various types of geosynthetic fabrics, geosynthetic membranes, and composite geosynthetic membranes





Frequently asked questions
Q1: What is your delivery time?
A1: If there is inventory, it usually takes 3-7 days. Or if the goods are out of stock, it will take 10-15 days, depending on the quantity.
Q2: Where is your company?
A2: Dezhou, Shandong Province, China. If you would like to come, please call me and I will arrange your schedule.
Q3: Are you a trading company or a manufacturer?
A3: We are manufacturers. So our prices are lower than those of trading companies.
Q4: What is your delivery method?
A4: Telegraphic transfer, PayPal
Q5: Do you provide samples? Is it free or extra?
A5: Yes, we can provide samples for free, but we do not pay for shipping.
Q6: What are your payment terms?
A6: Payment<=$1000, 100% in advance. Payment>=$1000, 30% advance T/T, balance before shipment. If you have any other questions, please contact me.