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In the field of building waterproofing engineering, leakage of garage roof slabs has always been a core pain point plaguing the industry. Traditional drainage methods are prone to problems such as poor drainage, water leakage, and structural corrosion. Especially in the scenario of planted roofs, root penetration and long - term hydrostatic pressure will accelerate the aging of the waterproof layer. Jiamei New Materials Co., Ltd., as a professional manufacturer with more than a decade of experience in the drainage system, relying on 22 utility model patent technologies, has innovatively developed the polymer protective drainage profiled sheet, which completely eliminates the hidden danger of roof slab water accumulation through a three - dimensional drainage structure.
This product is made of polymer synthetic material (HDPE) through a special pressing process to form a continuous and uniform boss matrix structure, achieving three core functions:
- Three - dimensional drainage: The gaps between the bosses form drainage channels, enabling active drainage with zero slope.
- Flexible protection: The 3mm - thick compression - resistant layer disperses the structural load, with a compressive strength of up to 150kPa.
- Enhanced waterproofing: The supporting self - adhesive geotextile forms a secondary protection system for the waterproof layer.
| Parameter item | Technical indicator |
|---|---|
| Material composition | HDPE + anti - aging agent + color masterbatch |
| Sheet thickness | 1.2 - 2.0mm (customizable) |
| Boss height | 8/10/12/15/20mm |
| Unit weight | 900 - 1500g/㎡ |
| Longitudinal water conductivity | ≥0.003m²/s |
| Operating temperature | -30℃~80℃ |
Compared with the traditional pebble drainage layer, this product has significant advantages:
- Space saving: A 5cm - thick layer replaces the 30cm - thick pebble layer, increasing the net height of the garage.
- Construction efficiency: Modular laying speed is increased by 300%, and zig - zag lap joint is supported.
- Root protection: Certified by the JG/T437 - 2014 root - penetration resistance test.
- System compatibility: Seamlessly connects with the HXC siphon drainage trough to form a complete drainage system.
Jiamei New Materials Co., Ltd. has 25 automated production lines, with an annual production capacity of 50 million square meters to ensure the stability of supply. The company holds 4 invention patents and the Class II construction qualification for waterproofing, anti-corrosion and thermal insulation. The project cases cover large real estate brands such as Wanda and Vanke. It is recommended that engineering parties pay special attention to the following when selecting products:
- Match the height of the boss with the depth of the top - plate soil covering
- Select the cold - resistant modified formula in the northern regions
- Anti - root - piercing geotextiles must be configured for planted roofs
FAQ
Q1: How to ensure the service life of the materials?
A: Imported anti - aging masterbatch is used. After 2000 - hour ultraviolet aging test according to the GB/T16422.3 standard, the strength retention rate is > 85%, and the theoretical service life reaches 30 years.
Q2: Is winter construction supported?
A: The flexibility of the materials remains good in an environment of - 15℃, but it is recommended to construct when the ambient temperature is higher than - 5℃. Special adhesives are required at low temperatures.
Q3: How to prevent root penetration?
A: Use our company's patented sticky geotextile (Patent No. ZL201810143672.8) in combination. The anti - puncture strength of 120N meets the JGJ155 specification for planted roofs.
Q4: How to connect the profiled sheet with the siphon trough?
A: The end face of the boss is designed with a snap - type interface, forming a mortise - and - tenon structure with the HXC siphon drainage trough. The water - passing capacity per linear meter reaches 1.8L/s.
Q5: What is the maximum applicable slope range?
A: Tested by the China Academy of Building Research, effective drainage can still be achieved under a slope of 5‰, breaking through the slope limit of traditional drainage boards.
Q6: What is the load safety factor?
A: The deformation rate of the 20mm boss model under a pressure of 250kPa is
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